Question 1- Heather wanted to find the density of a solution with a mass of 2.234
grams and a volume of 2.131 milliliters. She uses the density formula,
density = mass/volume.
If both her mass and volume were accurately measured to the thousandths place what is an accurate value for the density measured in g/mL?

Question 2- Coleton measures the sides of a rectangular piece of plywood. One
side is 72.6 inches long, and the shorter side is 36 inches long. What is the area of
the piece of plywood, rounded appropriately using significant figures?

Question 3- When would you want to use the median over the mean for
describing the measure of center for a data set?

Answers

Answer 1
For Question 1, you are given a  mass of 2.234 grams and a volume of 2.131 milliliters. You are asked to find the density of a solution. You will use the density formula to solve this. Density is equal to the mass of the substance over the volume displaced or D = M/V.

D = M/V
D = 2.234 grams/ 2.131 milliliters
D = 1.048 grams / milliliters or 1.048 g/mL

For Question 2, you are given a rectangular piece of plywood with one 
side 72.6 inches long, and the shorter side is 36 inches long. You are asked to find the area of the piece of plywood. The area of the rectangle is A = LW where A is the area, L is the length and W is the width.

A = LW
A = 72.6 inches x 36 inches
A = 2,610 in²

Related Questions

What is 
5.63×
10
−6
in decimal form?

a. 0.00000563

b. 0.000000563

c.5,630,000

d. 56,300,000

Answers

your answer would be A.

The parabola has a vertex of (1,-16) and y intercept of (0,-15) that crosses the x axis in two places. one x intercept is (5,0) what is the other x intercept

Answers

vertex form is:

y = a(x - 1)^2 - 16  where a is a cosntant

at y intercept we have

-15 = a^2 - 16
a^2 = 1

so equation of the parabola is y = (x-1)^2 - 16

the equation of symmetry is x = 1  and both roots are same distance either side of the point (1,0) so the other x-intercept  is  1 - 4 =   (-3,0)   

Geometry Question Please Help!!!!

Answers

The equation of a parabola is given by [tex]f(x)=a(x-h)^{2}+k [/tex] where [tex](h,k)[/tex] is the vertex.

We have the vertex is (-3,-2) so we have [tex]h=-3[/tex] and [tex]k=-2[/tex]

Substituting -3 and -2 into the [tex]f(x)[/tex]
[tex]f(x)=a(x--3)^{2}+(-2) [/tex]
[tex]f(x)=a(x+3)^{2}-2 [/tex]

Hence, the correct answer is option D

Sue took a taxi from her home to her friends house. It cost $3.58 per mile and she gave the driver a $5 tip. If she paid $87.34, how many miles does she live from her friend?

Answers

87.34-5 = 82.34

82.34/3.58 = 23

 she lives 23 miles away

Neptune has 8 known moons. This is 2 more than 1/3 of the number of known moons on Saturn. How many moons is Saturn known to have?

Answers

If Neptune has 8 and is 2 more than 1/3 the number of Saturn's moons, you would subtract 2 from 8 to get 6, then multiply that by 3 to get 18.
Final answer:

Through setting up and solving the equation 1/3 * x + 2 = 8, where x represents the number of Saturn's moons, it was determined that Saturn is known to have 18 moons.

Explanation:

The student's question pertains to a comparison of the moons of Neptune and Saturn, using mathematical operations to deduce the number of known moons of Saturn. First, we're told that Neptune has 8 known moons, which is said to be 2 more than 1/3 of the number of known moons on Saturn. We are seeking to solve for the number of moons that Saturn has.

To find out, we set up an equation where 1/3 of the number of moons of Saturn plus 2 equals the number of Neptune's moons: 1/3 * x + 2 = 8, where x represents the number of Saturn's moons. Solving for x, we subtract 2 from both sides to get 1/3 * x = 6. We then multiply both sides by 3 to isolate x and find that x = 18.

Therefore, Saturn is known to have 18 moons according to the given information.

Determine whether the sequence shown are arithmetic or geometric 1,8,15,22,29

Answers

1

8        <--- 1 + 7

15      <--- 8 + 7

22    <--- 15 + 7

29    <--- 22 + 7


is simply adding "7" to get the next value, so is an arithmetic sequence, whose common difference  is 7.

What polynomial identity should be used to prove that 20 = 36 − 16

Answers

Difference of Squares :)

Diffrence of squares is the correct answer just score pract q


Find the value of x for which abcd must be a parallelogram 5x-1 2x+5

Answers

If ABCD is a parallelogram then:
5 x - 1 = 2 x + 5
5 x - 1 + 1 = 2 x + 5 + 1
5 x - 2 x = 2 x - 2 x + 6
3 x = 6
x = 6 : 3
Answer:
x = 2

This prism has a volume of 112 cm3. What would the volume of the prism be if each dimension was doubled? 
(Scale factor is 2)




224 cm3


896 cm3


448 cm3


336 cm3

Answers

If each dimension was doubled, the volume of the prism would be: B. 896 cm³.

What is a scale factor?

In Geometry and Mathematics, a scale factor simply refers to the ratio of two corresponding side lengths in two similar geometric figures such as pentagons, which can be used to either horizontally or vertically enlarge (increase) or reduce (decrease or compress) a function that represents their size.

In Geometry, the scale factor of the dimensions of a geometric figure can be calculated by using the following formula:

Scale factor of volume = (Scale factor of dimensions)³

Scale factor of volume = (2)³

Scale factor of volume = 8

Therefore, the new volume is given by;

New volume of prism = 112 × 8

New volume of prism = 896 cm³.

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PQRS is an isosceles trapezoid and m angle Q=127. Find M angle P.

Answers

PQRS is an isosceles trapezoid and m < Q=127

so m<Q = m<P =127



answer
127

Answer:

[tex]m<P=127\°[/tex]

Step-by-step explanation:

we know that

If the trapezoid PQRS is an isosceles trapezoid

then

[tex]PS=QR[/tex] ----> congruent sides

[tex]m<P=m<Q[/tex] -----> congruent angles

In this problem we have

[tex]m<Q=127\°[/tex]

therefore

[tex]m<P=127\°[/tex]

a bag contains 5 red marbles, 3 yellow marbles, and 2 blue marbles. Once a marble is drawn, it is not replaced.what is the probability of drawing a blue on the first draw and a second blue marble on the next draw ?

Answers

5 red, 3 yellow, and 2 blue....for a total of 10 marbles

P(first one being blue) = 2/10 which reduces to 1/5
not replaced
P(second one is blue) = 1/9...because u already pick a blue, meaning there is only 1 left, and there is one less marble, so there is a total of 9 marbles.

P(both events happening) = 1/5 * 1/9 = 1/45 <==

The point (-2, 6) is on the line given by which of the equations below?





A.
y = 4x
 

B.
y = 2x
 

C.
y = 3x
 

D.
y = -3x

Answers

if we replace each equation with the proper set of values:
for (-2, 6) = (x, y) which also means that x = -2 and y = 6
A/ y = 4x => 6 = 4.(-2) <=> 6 = (-8)    Absurd
B/ y = 2.x => 6 = 2.(-2) <=> 6 = (-4)   Absurd
C/ y = 3x => 6 = 3.(-2) <=> 6 = (-6)    Absurd
D/ y = -3x => 6 = (-3).(-2) <=> 6 = 6   Right Answer

Mr. James has cylindrical beakers that measure 4 inches in diameter and are 9 inches high. What is the volume contained within the beakers? Use 3.14 for pi. Round your answer to the nearest hundredth. 56.52 cubic inches 100.34 cubic inches 113.04 cubic inches 226.08 cubic inches

Answers

The equation to find the volume of a cylinder is V = pi•r^2•h.
The radius is half of the diameter.  Since Mr. James' beakers have a diameter of 4, their radius would be 2.  2 squared is 4.
Their height is 9 inches.
V = 3.14•4•9
V = 3.14•36
V = 113.04
The answer is C, or 113.04 cubic inches.

The answer is C, or 113.04 cubic inches.

The length of a rectangle is eight times it's width. If the length was decreased by 10 meters and the width decreased by 2 meters the area would be decreased by 162 m. Find the original dimensions.

Answers

Alright, so l=8w (l=length, w=width, a=l*w or original area)

(l-10)*(w-20)=a-162

Substituting l for 8w and a for l*w and then 8w*w, we have
 (8w-10)(w-20)=8w^2-162=8w^2-160w-10w+200=8w^2-170w+200

8w^2-170w+200=8w^2-162 , so we subtract 8w^2 from both sides as well as subtract 200 to both to get -170w=-362, so w=362/170 and
 l= 8*362/170=2896/170 

What is 5.928301 to 2 decimal places?

Answers

Final answer:

To round 5.928301 to 2 decimal places, we observe the third decimal place. It's 8, so we round up, making the answer 5.93.

Explanation:

When rounding the number 5.928301 to 2 decimal places, we need to look at the third decimal digit to decide whether to round up or down. Since the third decimal digit (8) is greater than 5, we round up. Therefore, the number 5.928301 rounded to 2 decimal places is 5.93.

Rounding a number to two decimal places involves examining the third decimal digit to determine whether to round up or down. In the case of 5.928301, the third digit is 8, which is greater than 5. Consequently, rounding up is necessary. Thus, the rounded value of 5.928301 to two decimal places is 5.93, emphasizing the role of the third digit in the rounding decision.

Please help! Given b = 4 and h = 1, what is the equation of the graph if the parent function is y = sqrt x?
A. y = sqrt (4x - 4)
B. y = sqrt (4x + 4)
C. y = - sqrt (4x - 4)
D. y = - sqrt (4x + 4)

Answers

To solve this problem, we make use of the formula:

y = a sqrt (b (x – h)) + k                  ---> 1

Since we are given the parent function:

y = sqrt (x)                                          ---> 2

Then this automatically means that:

a = 1       and        k = 0

So going back to equation 1 at a = 1 and k = 0:

y = 1 sqrt (b (x – h))

Since it is given that, b = 4            and        h = 1, therefore:

y = sqrt (4 (x – 1))

y = sqrt (4 x – 4)

 

Answer:

A. y = sqrt (4 x – 4)

Which of the following types of functions cannot have "all real numbers" as either its domain or its range? Exponential function Quadratic function Linear function Inverse Variation function

Answers

The domain of the function are all possible values (x values) which are suitable for the function. The range are all possible y values , when we have already defined the domain.
For the exponential function:The domain of exponential functions is all real numbers. And the range are all  real numbers greater than zero. 
For the quadratic function: The domain is all real numbers, and the range is all real numbers f(x) such that f(x) ≤ 4.
For the linear function: Domain and range all real numbers.
For the inverse variation function (hyperbola): two asymptotes are excluded from the domain of all real numbers and one excluded from the range.
So, according to these, the exponential function, the quadratic function and the inverse variation function cannot have "all real numbers" as either its domain or its range. Only the linear has.

Which of the following sets is not finite?

Answers

pricherter plese.............
In which sphere would lightning be found?

(06.06) Which of the following demonstrates the Commutative Property of Multiplication? 3(4a − 2) = 12a − 6 3(4a − 2) = (4a − 2) ⋅ 3 12a − 6 = (4a − 2) ⋅ 3 (3 ⋅ 4a) − 2 = 3(4a − 2)

Answers

commutative property of multiplication states : a * b = b * a...so basically, u can move the numbers around and it will still equal the same thing
3(4a - 2) = (4a - 2) * 3 <==
Commutative means you can reverse the order  without affecting the result of the multiplication:-   a*b = b*a.
so its the second option:-

3(4a - 2) = (4a - 2).3

Don is 6 feet tall. at a given time of day, he measures his shadow to be 13 feet long. at the same time, he measures the shadow length of a nearby tree to be 51 feet. how tall is the tree

Answers

Don is 6 feet tall. at a given time of day, he measures his shadow to be 13 feet long. at the same time, he measures the shadow length of a nearby tree to be 51 feet. how tall is the tree(x=tree height)

the equation for this problem would be...
6/13=x/51
you then multpli the denominators on both sides and get...
6*51=13x
you then solve...
306=13x
and then you divide 13 on both sides...
x=23.54ft
the tree is 23.54ft tall

(leave a thanks and a rating if i helped) c:

The height of the tree maintaining the given ratio is 23.54 feet.

What are the ratio and proportion?

The ratio is the division of the two numbers.

For example, a/b, where a will be the numerator and b will be the denominator.

Proportion is the relation of a variable with another. It could be direct or inverse.

Given that,

Don height = 6 feet

His shadow = 13 feet

The ratio of height to shadow = 6/13

Tree height = x (let's say)

Tree shadow = 51 feet

Ratio = x/51

Both ratios must be the same, therefore,

x/51=6/13

x=23.54 feet

Hence "The height of the tree maintaining the given ratio is 23.54 feet".

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Use the horizontal line test to identify the relation whose inverse is not a function.

Answers

The graph 3 whose inverse is not a function.

What is an inverse of a function?

The inverse function agrees with the resultant, operates and reaches back to the original function. If you consider functions, f and g are inverse, f(g(x)) = g(f(x)) = x.

Horizontal Line Test :-

Let f be a function. If any horizontal line intersects the graph of f more than once, then f does not have an inverse. If no horizontal line intersects the graph of f more than once, then f does have an inverse.

So, according to the definition, the only graph which follows the rule of horizontal lines test is the graph 3.

Hence, the graph 3 whose inverse is not a function.

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By using the horizontal line test, a relation whose inverse is not a function is: D. relation D.

In Mathematics and Euclidean Geometry, the horizontal line test states that if the graph of a function (f) is intersected by any horizontal line more than once, then, the function (f) does not have an inverse.

Conversely, if the graph of a function (f) isn't intersected by any horizontal line more than once, then, the function (f) has an inverse.

By critically observing the graph of the given relation shown in the image attached below, we can logically deduce that it does not have an inverse because it didn't pass the horizontal line test.

find the value of x if f(x) equals 7 f(x) equals 4x minus 1

Answers

The answer for this question is x=2

The area of a rectangular wall of a barn is 75 75 square feet. its length is 10 10 feet longer than the width. find the length and width of the wall of the barn.

Answers

A = L * W
A = 75
L = W + 10

75 = W(W + 10)
75 = W^2 + 10W
W^2 + 10W - 75 = 0
(W + 15)(W - 5) = 0

W + 15 = 0
W = -15...not this one because it is negative

W - 5 = 0
W = 5 <=== width is 5 ft

L = W + 10
L = 5 + 10
L = 15 <=== length is 15 ft
Final answer:

First, represent the unknown width as 'x'. Then, because the length is 10 feet more than the width, represent the length as 'x + 10'. Since the area is 75 square feet, set up and solve the equation x*(x + 10) = 75 for 'x'. This will give the width and the length will be this width plus 10 feet.

Explanation:

This problem can be solved using algebra. First, let's denote the width of the wall as x in feet. If the length of the wall is 10 feet longer than the width, then we can express the length as x + 10. We're told that the area of the rectangle formed by the wall is 75 square feet. The area of a rectangle is calculated by multiplying its length by its width. Therefore:

x*(x + 10) = 75

You can solve this quadratic equation for x. The positive solution will be the width of the wall and the length will be that value plus 10 feet.

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if a metal tool chest has the shape of a prism with a pentagonal base of 6194in squared in area, calculate the volume of the metal chest and pick where length c = 6 inches and length m = 19 inches

Answers

The formula for the volume of most prism is area of base(height) so just multiply 43in(21in) to get answer

The volume of the metal tool chest is 37,164 cubic inches. To calculate the volume of the metal tool chest, we use the formula for the volume of a prism: Volume = Base area × Height

Given that the pentagonal base has an area of 6194 square inches, and the length c (which represents the height) is 6 inches, we can calculate the volume as follows:

Volume = 6194 in² × 6 in

Volume = 37,164 cubic inches

So, the volume of the metal tool chest is 37,164 cubic inches.

As for the lengths provided:

c = 6 inches (height)

m = 19 inches (unknown side length of the pentagon)

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The growth of a new strain of bacteria is represented by 7=79.31(1.48)^x,where x represents the number of days and y represents the number of bacteria. which is the best prediction for the number of bacteria on day 6
A.833
B.117
C.704
D.647

Answers

Y (x)=79.31(1.48)^x
Y (6)=79.31×(1.48)^(6)
Y (6)=833

Answer:

A. 833

Step-by-step explanation:

Given:

The growth of a new strain of bacteria is represented by [tex]y = 79.31(1.48)^x[/tex], where "x" represents the number of days and "y" represents the number of bacteria.

We need to find the number of bacteria on day 6.

So, here x = 6, we need to plug in x = 6 in the given function and find the answer.

[tex]y = 79.31(1.48)^6[tex]

Simplify the above expression, we get

y = 833.49

The bacteria cannot be in decimal form, let's round off the answer to nearest whole number.

y = 833

Therefore, answer is A. 833

A basketball is thrown with an initial upward velocity of 25 feet per second from a height of 8 feet above the ground. The equation h=−16 t 2 +25t+8 h=−16t2+25t+8  models the height in feet t seconds after it is thrown. After the ball passes its maximum height, it comes down and then goes into the hoop at a height of 10 feet above the ground. About how long after it was thrown does it go into the hoop?

Answers

-16t^2 + 25t + 8 = 10

-16t^2 + 25t - 2 = 0

t = 1.48 seconds

Whats the perimeter of a rectangle with length 12 m and width 5m

Answers

P = 2(12 + 5)
P = 2 (17)
P = 34 m

hope it helps
I think the answer is 34 because 12+5+12+5 is 34 also use formula 2(length * width)

Select the additive inverse of 51

Answers

-51 because it makes zero
The additive inverse of a number is a number when added to the original number equals to 0.

What can we add to 51 to make it equal to 0. Set up an equation.

Let x = the additive inverse of 51

x + 51 = 0

Solve for x.

x + 51 = 0
x = -51 <-- Subtract 51 from both sides

So, -51 is the additive inverse of 51.

Find 93 • 87 using mental math.

Answers

Okay so start with multiplying 93 * 7

So 3 x 7= 21

9 X 7 +63, carry the 2 = 651


Then 8 x 93
Remember that first is a zero.
8 X 3= 24
8 X 9= 72, carry the 2= 74
So that is 7440
Now
  0651
+7440
  8091
And that's the answer

To estimate 93 × 87 using mental math, round 87 to 90, multiply by 93 to get 8370, and subtract 3 × 93 (279) for an estimate of 8091.

To find 93 × 87 using mental math, we can employ a strategy that simplifies the multiplication process. One way is to round one of the numbers to the nearest multiple of ten, perform the multiplication, and then adjust the result accordingly. Here, we can round 87 up to 90 and multiply 93 by 90. This is easier because 90 is a multiple of 10.

93 × 90 = (93 × 9) × 10  = 837 × 10 = 8370

Since we rounded 87 to 90, we overestimated by 3 per unit of 93. Hence, we need to subtract 3 times 93 from 8370.

3 × 93 = 279

Thus, 8370 - 279 = 8091.

the leg of a right triangle is 5 units and the hypotenuse is 8 units.what is the length in units of the other leg of the triangle

Answers

Using the Pythagorean Theorem, we can figure out the missing leg.

If you don't know, the Pythagorean Theorem states that for any right triangle the sum of the squares of both of the legs is equals to the hypotenuse.

[tex]a^2 + b^2 = c^2[/tex]

Where the variables a and b are the legs and c is the hypotenuse.

The variables a and b are interchangeable but not c.

Plug in the values that we know.

[tex]5^2 + b^2 = 8^2[/tex]
[tex]25 + b^2 = 64[/tex]
[tex]b^2 = 39[/tex]
[tex]b = \sqrt{39}[/tex]

So, the other leg is equal to the square root of 39 units.

The square of the hypotenuse is equal to the sum of the square of other two sides. The length in units of the other leg of the triangle is 6.2 units

What is Pythagoras theorem?

The square of the hypotenuse is equal to the sum of the square of the other two sides.

Mathematically;

l^2 = a^2 + b^2

Given

l = 8 units

a = 5 units

Substitute

8^2 = 5^2 + b^2

64 - 25 = b^2

b^2 = 6.2units

Hence the length in units of the other leg of the triangle is 6.2 units

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