[tex]f=\dfrac{n}{4}+37\\\\\text{substitute the value of n = 18 to the expression}\\\\f=\dfrac{18}{4}+37=4.5+37=41.5\approx42[/tex]
Answer: f = 42.
By using substitution of value n, temperature F in degree Fahrenheit is 42.
What is substitution method?"The substitution method is a simple way to solve a system of linear equations algebraically and find the solutions of the variables."
Given
Formula to estimate the temperature F in degree Fahrenheit
f = [tex]\frac{n}{4} +37[/tex]
n = 18 chirps/min
Substituting n in the formula
f = [tex]\frac{n}{4} +37[/tex]
⇒ f = [tex]\frac{18}{4}+37[/tex]
⇒ f = 4.5 + 37
⇒ f = 41.5 ≅ 42 (nearest whole number)
Thus, temperature F in degree Fahrenheit is 42.
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Tammy and Jodi assembled 420 circuit boards in 8 hours. The next day they assembled 36 more circuit boards in the same amount of time. What was their average rate on the second day? A. 87 boards per hour B. 70 boards per hour C. 57 boards per hour D. 36 boards per hour
Answer:
C
Step-by-step explanation:
write the numerical expressions in words then solve 10×(2.5+13.5)
7/2 as an improper fraction
Which expression shows the result of completely factoring and simplifying 3x+9x ? (A) 12x
(B) 3x(3x+9x)
(C) −6x
(D) 9(x+1)
How many times can 4 go into 69
PLEASE HELP!
Sarah paints a straight line. The line is 13 1/2 ft long. She wants to divide the line into sections that are each 1/8 ft long. How many sections will the line be divided into?
Pls help me I really need it
how to find the answer to this
5g=230 HOW DO I FIND THIS PLZ HELP NOW
Jodi went 54 miles on 3.5 gallons of gas, and she wants to know how far she can go on 9 gallons of gas. Which proportion would be useful to solve the problem?
A)
9
3
=
54
x
B)
9
54
=
x
3
C)
54
3.5
=
x
9
D)
54
9
=
3.5
x
Susie is an organic vegetable grower the perimeter of her rectangular vegetable garden is 72 yards the width of the vegetable garden is 9 yards how long is the vegetable garden
Balu and Pumba shared ½ of a cake. Balu got to eat twice as much cake as Pumba. What fraction of the whole cake did Balu eat?
Answer:
Balu ate [tex]\frac{1}{3}[/tex]fraction of the whole cake
Step-by-step explanation:
Let x be the amount of cake eaten by Pumba
Balu got to eat twice as much cake as Pumba.
Balu eat cake = 2x
Balu and Pumba shared ½ of a cake.
So, [tex]2x+x=\frac{1}{2}[/tex]
[tex]3x=\frac{1}{2}[/tex]
[tex]x=\frac{1}{6}[/tex]
So, Pumba's share = [tex]\frac{1}{6}[/tex]
Balu's share = 2x = [tex]\frac{2}{6}=\frac{1}{3}[/tex]
Hence Balu ate [tex]\frac{1}{3}[/tex]fraction of the whole cake
Jacob, Kylie, and Manuel each bought a sandwich and drink. The total bill to $21, and each drink cost $2. Of each sandwich cost the same amount, what is the cost of one sandwich?
An 8-ounce can of tomatoes costs $1.14.A 12-ounce can costs $1.75.Which can of tomatoes cost the least per ounce
Answer:
8-ounce can tomatoes costs the least per ounce.
Step-by-step explanation:
Cost of an 8-ounce can of tomatoes = $1.14
cost per ounce of tomatoes = [tex]\frac{1.14}{8}[/tex]
= $0.1425 ≈ $0.14 per ounce
Cost of an 12-ounce can of tomatoes = $1.75
cost per ounce of tomatoes = [tex]\frac{1.75}{12}[/tex]
= $0.1458 ≈ $0.15 per ounce
Therefore, 8-ounce can of tomatoes cost the least per ounce.
If a stereo is sold for $59.99 and Karen pays $64.19 for it when she checks out, what is the sales tax in the area
The sales tax in the area where Karen bought the stereo is $4.20. This was calculated by subtracting the original price of the stereo ($59.99) from the total price paid ($64.19).
Explanation:To find the sales tax in this scenario, we need to subtract the original price of the stereo, which is $59.99, from the total price that Karen paid, which is $64.19. The difference will represent the sales tax that Karen had to pay at the checkout.
So we calculate: $64.19 - $59.99 = $4.20
Therefore, the sales tax that Karen paid for the stereo is $4.20.
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Can someone help me on this
Evaluate 12x−3y12x−3y when x=−14x=−14 and y=3y=3.
Answer:
-12
Step-by-step explanation:
I think I got it right on Big Ideas
I need help with this asap right now please
Which number is equal to 10 to the 3rd power
jamil has 3 pet lizards. the pet store owner said that jamil will need to buy a total of 36 crickets to feed his lizards if each lizard eats the numberbof crickts how many crickts does each lizard eat?
Jeanette and Leslie are trying to solve this problem: A camp counselor has a list of 134 campers who signed up for art class. The counselor can place 8 students in each class. How many classes does the counselor need to have?
*Please Show Work*
Ling uses 21 bananas to make 7 fruit smoothies. What is the unit rate that Ling uses for bananas per each smoothie? What is the unit rate? Explain how to use equivalent fractions to find the answer
Answer:
The unit rate that ling uses for bananas per each smoothie is (3/1) bananas per smoothie
Step-by-step explanation:
Ling uses 21 bananas to make 7 fruit smoothies. Total of bananas B = 21. Total of smoothies S =7.
The unit rate U is the relationships B divided by S.
U = B/S
U = 21 bananas / 7 smoothies
U = 21/7 Bananas per smoothies.
We can use the equivalent fractions to find the unit rate. 21 can be expressed as 7*3. 7 can be expressed as 7*1. We can simplify the number 7 in numerator and denominator.
U = (7*3)/(7*1)
U = 3/1.
Finally, the unit rate is 3/1 bananas per smoothie.
Which measure of central tendency best describes this situation: the ages of students in an eighth-grade class?
a) Mean; there likely are no outliers.
b) Mode; the data are not numerical.
c) Median; there likely are outliers.
d) Median; there likely are no outliers.
Answer:
Step-by-step explanation:
Its B=median
the lifetime of a smartphone battery while playing video is described by a normal model. if 95% of batteries last between 8.5 and 11.5 hours, what are the mean and standard deviation of the distribution of battery lifetime while playing videos?
In one weekend,a theatre sells 74,877 tickets to a new movie. Write the values for each of the 7s in 74,877.
Answer:
Given number,
74, 877
Since, the place value chart,
Ones = 1,
Tens = 10,
Hundred = 100,
Thousand = 1000,
Ten thousand = 10,000
Hundred thousands = 100,000
Millions = 1,000,000
Hence, by the above chart,
For the number,
74,877
Place value of 7 at ones place = 7,
Place value of 7 at tens place = 70,
Place value of 7 at ten thousand place = 700,000
Simplify the expression: 5+12 divided by 2x2
Your picture of your family crest is 4.5 inches wide. You need a reduced copy for the front page of the family newsletter. The copy must fit in a space 1.8 inches wide. Which scale factor should you use on the copy machine to adjust the size of your pictures of the crest?
A) 2/5
B) 5/2
C) 1/2
D) 1/5
Answer:
The answer is : A 2/5
(I just finished taking the test)
The scale factor would be 2/5 to reduce the width from 4.5 inches to 1.8 inches.
What is a scale factor?A scale factor is defined as the ratio of the scale of a given original object to the scale of a new object that is its representation but of a different size (bigger or smaller). For example, we can enlarge a rectangle with sides of 2 cm and 4 cm by multiplying each side by a number, say 2.
Given that your picture of your family crest is 4.5 inches wide. You need a reduced copy for the front page of the family newsletter. The copy must fit in a space 1.8 inches wide.
The scale factor will be calculated as,
Scale factor = Reduced size / Original size
Scale factor = 1.8 / 4.5
Scale factor = 0.4 or 2/5
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what is the volume of 20 grams of an object with a density of 55g/cm^3?
The volume of an object with a mass of 55g/cm³ and a mass of 20 grams is 27.5cm³.
What are mass, volume, and density?Mass is the quantity of matter in a physical body.
The volume shows the amount of 3D space occupied by a closed object.
Density is mass per unit of volume.
Volume is only defined for 3-dimensional objects 2 dimensional objects have no volume.
We know volume is equal to mass/density.
Given an object has a density of 55g/cm³ and a mass is 20 grams.
∴ Volume = (55/20) cm³.
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A spider walks about 19 cm each second. About how long would it take the spider to walk around the perimeter of a room that is 3 m wide and 4 m long?
Final answer:
To calculate the time it takes the spider to walk around the perimeter of a 3 m by 4 m room, we first find the perimeter in meters, convert it to centimeters, and then divide by the spider's speed in cm/s. The perimeter of the room is 14 m, which is 1400 cm. Dividing this by the spider's speed, 19 cm/s, gives us approximately 74 seconds.
Explanation:
To find out how long it would take the spider to walk around the perimeter of a room that is 3 m wide and 4 m long, we first need to calculate the perimeter of the room. The formula for perimeter P of a rectangle is P = 2(l + w), where l is the length and w is the width.
So for a room that is 3 m wide and 4 m long, the perimeter is:
P = 2(4 m + 3 m) = 2(7 m) = 14 m
Since the spider walks 19 cm each second and there are 100 cm in a meter, we convert the perimeter to centimeters:
14 m = 1400 cm
Now, we calculate the time t it will take for the spider to walk this distance by dividing the perimeter by the spider's speed:
t = perimeter/speed = 1400 cm / 19 cm/s
Therefore, the time taken for the spider to walk around the perimeter is approximately:
t = 73.68 s
So, the spider would take about 74 seconds to walk around the perimeter of the room.
Final answer:
To determine the time for a spider to walk around a 3 m by 4 m room, calculate the perimeter (14 m), convert it to centimeters (1400 cm), and divide by the spider's speed (19 cm/s), resulting in approximately 73.68 seconds.
Explanation:
To calculate the time it would take for a spider to walk around the perimeter of a 3 m by 4 m room, first, find the perimeter of the room by adding the lengths of all the sides:
Perimeter = 2 × (3 m) + 2 × (4 m) = 6 m + 8 m = 14 m.Next, since the spider walks 19 cm each second, convert the perimeter from meters to centimeters because the units need to match.
Perimeter in centimeters = 14 m × 100 cm/m = 1400 cm.Now, divide the total perimeter by the spider's speed to find the time it takes:
Time = Perimeter / SpeedTime = 1400 cm / 19 cm/sTime ≈ 73.68 secondsTherefore, it would take approximately 73.68 seconds for the spider to walk around the perimeter of the room.
The volume of a rectangular prism can be computed by using the formula V=lwh. Which equation is solved for w? A. w=v/lh B. w=lh/v C. w=vl/h D. w=vlh
The equation w = V/lh can be used to find the width of the rectangular prism option (A) is correct.
What is an expression?It is defined as the combination of constants and variables with mathematical operators.
It is given that:
The volume of a rectangular prism can be computed by using the formula
V=lwh.
A rectangular prism can be defined as a six-faced shape, a type of hexahedron in geometry.
It is a three-dimensional shape. It is also called a cuboid.
Solve for w:
w = V/lh
Thus, the equation w = V/lh can be used to find the width of the rectangular prism option (A) is correct.
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Final answer:
The equation solved for w is B. w = lh/v
Explanation:
1. Understand the Formula:
The formula for the volume (V) of a rectangular prism is V = lwh, where l is the length, w is the width, and h is the height.2. Isolate w:
To solve for w, isolate w on one side of the equation.Divide both sides of the formula by lh: V/lh = w3. Determine the Correct Equation:
Compare the isolated w with the provided answer choices.The correct equation solved for w is w = lh/vTherefore, the correct answer will be B. w=lh/v
A film set designer is using white and colored tiles in a pattern to create paths of different lengths. If x is the length of the path in feet, the number of colored tiles needed to make it is calculated using the rule
(4x2y3)(3x2y2)
where y represents the number of white tiles.
Which simplified expression represents the number of colored tiles used for a path of length x feet?
7x4y5
7x4y6
12x4y5
12x4y6
The simplified algebraic expression for the number of colored tiles used for a path(4x^2y^3)(3x^2y^2), is 12x^4y^5. Hence the correct option is 3,
Given the algebraic rule for determining the number of colored tiles ((4x2y3)(3x2y2)), we simplify this expression by multiplying the coefficients and then by adding the exponents for x and y (since they are the same base).
Multiply the coefficients: 4 x 3 = 12
Add the exponents for x: 2 + 2 = 4 (since x2 x x2 = x2+2)
Add the exponents for y: 3 + 2 = 5 (since y3 x y2 = y3+2)