PLEASE HELP I need an explanation if you can’t do it it’s fine I’ll take what I can get thanks!

Steps to solve:

-4(r + 3) = -42

~Distribute

(-4 * r) + (-4 * 3) = -42

~Simplify

-4r - 12 = -42

~Add 12 to both sides

-4r - 12 + 12 = -42 + 12

~Simplify

-4r = -30

~Divide -4 to both sides

-4r/-4 = -30/-4

~Simplify

r = 7.5

Best of Luck!

Answer:

7.5

Step-by-step explanation:

(-4) (7.5 + 3)= -42

Answer:

x = -31

Step-by-step explanation:

x-19=2x+12

Subtract x from each side

x-x-19=2x-x+12

-19 = x+12

Subtract 12 from each side

-19-12=x+12-12

-31 =x

Answer:

3. Look at the least amount of time practicing. That is 1/4 hours. Then look at the most time practicing, an hour and a half. Subtract 1  1/2 by 1/4.

4. Look at the dots in the plot. The one in the middle is the highest because it appears the most. The most common time is 3/4 of an hour.

5. To see the total time, add all of the numbers up, including the repeated ones.

Answer:

I think it's D, sorry if i'm wrong but let me know if I'm right!

Step-by-step explanation:

Answer:

6    

Step-by-step explanation:

Answer:

11

Step-by-step explanation:

Put the numbers in order from smallest to largest

10, 12,13, 15, 17, 18,  21,

The range is the largest number minus the smallest number

21-10

11

The total surface area of the composite figure will be 134 square units.

Surface area are derived for some standard shapes like circle, triangle, parallelogram, rectangle, trapezoid, etc.

When some shape comes which isn't standard figure, then we find its area by slicing it (virtually, like by drawing lines) in standard shapes. Then we calculate those composing shapes' area and sum them all.

Thus, we have:

[tex]\text{Area of composite figure} = \sum (\text{Area of composing figures})[/tex]

That ∑ sign shows "sum"

We are given that;

The dimensions of figure

Now,

The area of the shared face is already calculated as 20 square units. So, to find the total surface area, we subtract this from the sum of the surface areas:

TSA=(60+94)−20

TSA=154−20

TSA=134

Therefore, the area of the figure will be 134 square units.

Learn more about area of a composite figure here:

https://brainly.com/question/10254615

#SPJ3

Answer: The face that is shared with the rectangular prism is

✔ 2(5)

.

The area of each base of the rectangular prism is

✔ 10

square units.

The lateral area (excluding the shared face) for the rectangular prism is

✔ 18

square units.

The total surface area of the composite figure will be

✔ 66

square units.

Step-by-step explanation:

Answer:

The next three terms of the sequence are 182.3, 273.5 and 410.3 respectively (all rounded to the nearest tenth value)

Step-by-step explanation:

A geometric sequence is one in which successive members are multiples of a constant common ratio.

From the sequence, we can identify that;

First term a = 36

common difference = 2nd term/first term = 3rd term/second term = 4th term/3rd term

Hence, common difference d = 54/36 = 81/54 = 1.5

The next three terms of the sequence are the 5th, 6th and 7th term respectively.

For the 5th term, we have 4th term × common ratio = 121.5 × 1.5 = 182.3

For the 6th term, we have 5th term × common ratio = 182.3 × 1.5 = 273.5

For the 7th term, we have 6th term × common ratio = 273.5 × 1.5 = 410.3

Answer:

Jeff rode 4 1/2 miles

Step-by-step explanation:

a simple way to do this is divide 9 by 2 to get 4 1/2

Answer:

Step-by-step explanation:

If it is hard to multiply fractions, you can always convert it into decimal form.

1/2 is equivalent to 0.5

Since he went around the trail 9 times, you have to multiply 0.5 times 9 which equals 4.5.

That means Jeff rode 4 1/2 miles

Hope this helps!

Answer:

I think its 46...

Step-by-step explanation:

Answer:

the answer is 40

Step-by-step explanation:

15+8+17=40

Answer:

[tex] 2.226 \times {10}^{8} [/tex]

Step-by-step explanation:

[tex](5.3 \times {10}^{4} )(4.2 \times {10}^{3} ) \\ = 5.3 \times 4.2 \times {10}^{4 + 3} \\ = 22.26 \times {10}^{7} \\ = 2.226 \times {10}^{8} [/tex]

Answer:C

Step-by-step explanation:

Answer:

25 cubic feet of concrete

Step-by-step explanation:

Given the information:

=>The volume of concrete darryl need for the highest stair is:

The volume of the staircase - the volume of the lowest stair -  the volume of middle stair

= 34 -  3 - 6

= 25 cubic feet of concrete

Hope it will find you well.

Answer:

Step-by-step explanation:

Step-by-step explanation:

Putting values of x and y

2 = 4 + 2

2 = 6

= 6-2

= 4

Answer:

The value of x is 42°.

Step-by-step explanation:

Given AB and BC are perpendicular lines which means that AB is 90° to BC. So in order to find the value of x, you have to substract 24° and 24° from 90° :

[tex]24° + x + 24° = 90°[/tex]

[tex]x = 90° - 24° - 24°[/tex]

[tex]x = 42°[/tex]

Answer:

Point Form:

( − 2 , 3 )

Equation Form:

x  =  − 2 ,  y  =  3

Step-by-step explanation:

Add the equations in order to solve for the first variable. Plug this value into the other equations in order to solve for the remaining variables.

Answer:

x = -2, y = 3

Step-by-step explanation:

x + 3y = 7

2x + 4y = 8

Make the x term the same for both equations by multiplying the first equation by 2.

Now you have two equations with the same x terms.

2x + 6y = 14

2x + 4y = 8

Take the larger equation from the smaller to remove the x terms from the equations.

2x + 6y = 14

                   -

2x + 4y = 8

2y = 6

y = 3

Put the known y term back into the equations to find the y term

3(3) + x = 7

9 + x = 7, x = -2

12 + 2x = 8

2x = -4, x = -2

Step-by-step explanation:

This sequence is by adding 4 you get the next number

Addition is the function

Answer:

2 • (2x - 3) • (3x - 2)

Step-by-step explanation:

Answer:

4x + 6(3x -2)

First distribute

4x + 18x - 12

Combine like terms

22x - 12

Step-by-step explanation:

Answer:

The area is 36

Step-by-step explanation:

hope it helps :3

multiple the length x width

6x6=36

Answer:

212

Step-by-step explanation:

volume of new figure = sum of the two individual figures

volume of one cuboid=l*b*h

volume of first cuboid=92

volume of second  cuboid=120

sum of two figures=212

hope this helps

plzz mark me brainliest

Answer:

212 is the answer

Step-by-step explanation:

First to find the area of the first figure, you must use the formula for volume: length times width times height.

so: 23(2)(2) is equal to 92.

then for the second figure: 8(5)(3) is equal to 120.

now you add the two answers.

92+120=212

Answer:

The reason why both have the same value is because you are only moving the decimal place. The difference between 51.2 and 5.12 is that you divided 10 from 51.2 to get 5.12. Same goes for 6.4 and 0.64.

51.2 / 6.4 = 8

5.12 / 0.64 = 8

Final answer:

The quotient of 51.2 divided by 6.4 is the same as 5.12 divided by 0.64 because both numerators and denominators are related by a factor of 10. This maintains the value of the quotient unchanged when both are multiplied or divided by the same power of 10.

Explanation:

When dividing two numbers, you can often simplify the expression by dividing both numbers by a common factor. In this case, both 51.2 and 6.4 have a common factor of 0.64. Dividing both numbers by 0.64, we get:

51.2 ÷ 0.64 = 80

6.4 ÷ 0.64 = 10

So, as you can see, the result is the same: 80 divided by 10 is equal to 8. This is why dividing 51.2 by 6.4 has the same value as dividing 5.12 by 0.64.

Answer:

612

Step-by-step explanation:

The lateral surface area does not include the bases.

The bases are the triangles

We will add up the areas of the three rectangles

We have the two rectangles on the sides which are 17 by 13 and the rectangle on the bottom which is 17 by 10

17* 13 + 17*13 + 17*10 =612

Answer:

Actual dimension of the field = 42 ft × 21 ft

Equation : [tex]y=\frac{7}{2}x[/tex]

Step-by-step explanation:

Scale for the drawing of a rectangular playing field is,

2 inches = 7 feet

Or 1 inch = 3.5 feet

If length of the playing field on drawing = 12 in

Then actual length of the field = 12×3.5 = 42 feet

And width on the drawing = 6 inches

Therefore, actual width of the field = 6×3.5 = 21 feet

If 'x' is the dimension of a scale drawing and 'y' be the corresponding dimension of the actual field,

[tex]\frac{x}{y}=\frac{2}{7}[/tex]

[tex]y=\frac{7}{2}x[/tex]

Answer:

Im not sure but I thinks its the first one

f(x)=8(4)

Step-by-step explanation:

Answer:

b

Step-by-step explanation:

Answer:

The ratio of the height of the cone to the height of the cylinder is 3 to 1

The ratio of the height of the cone to the radius of the sphere is 4 to 1

Step-by-step explanation:

First we need to know the volume of a cylinder, a cone and a sphere:

V_cylinder = pi*r^2*h

V_cone = (1/3)*pi*r^2*h

V_sphere = (4/3)*pi*r^3

If they have the same volume:

The ratio of the height of the cone to the height of the cylinder is:

V_cone / V_cylinder = 1

(1/3)*pi*r^2*h1 / pi*r^2*h2 = 1

(1/3) * h1 = h2

h1 / h2 = 3

So the ratio is 3 to 1

The ratio of the height of the cone to the radius of the sphere is:

V_cone / V_sphere = 1

(1/3)*pi*r^2*h / (4/3)*pi*r^3 = 1

h / 4r = 1

h / r = 4

So the ratio is 4 to 1

Answer: 77/50

Step-by-step explanation:

Decimal: 1.54

Fraction: 77/50

Percentage: 154%

Answer:

x = - 1/6 + √-119/6, and, - 1/6 - √-119/6

Step-by-step explanation:

Using the quadratic formula which is: - b ± √b² - 4ac / 2a

a = 3, b = 1, c = 10

- 1 ± √1² -4 * 3 * 10 / 2 * 3

- 1 ± √1 - 120 / 6

-1 ± √-119 / 6

= -1/6 + √119/6,               or                  - 1/6 - √-119/6

Answer:

4

Step-by-step explanation:

1) to find hcf, first look at what both 12 and 16 are divisible by

12 and 16 are divisible by 2

so

12/2=6

16/2=8

now we have 6,8

6 and 8 are divisible by 2 as well

6/2=3

8/2=4

3,4 is what we are left with

since we had to divide these numbers by 2 both times, multiply them.

2*2=4

4 is the hcf

Answer:

A

Step-by-step explanation:

Answer:

Harry stains his shirt during the dinner.

Step-by-step explanation:

P (Harry stains his shirt during the dinner) [tex]=[/tex] [tex]\frac{1}{5}[/tex] [tex]= 0.2[/tex]

P (Larry stains his shirt during the dinner) [tex]= 15%[/tex]% [tex]= 0.15[/tex]

[tex]0.2 > 0.15[/tex]

It is more likely that Harry stains his shirt during the dinner.

Answer:

[tex] y - \frac{7}{2}= \frac{1}{2} (x-4)[/tex]

[tex] y-\frac{7}{2}= \frac{1}{2}x - 2[/tex]

[tex] y = \frac{1}{2}x -2 + \frac{7}{2}[/tex]

[tex] y = \frac{1}{2}x + \frac{3}{2}[/tex]

[tex] y = mx +b[/tex]

Is given by:

Ο 3/2

Step-by-step explanation:

For this case we have the following function given:

[tex] y - \frac{7}{2}= \frac{1}{2} (x-4)[/tex]

If we distribute the 1/2 in the right we got:

[tex] y-\frac{7}{2}= \frac{1}{2}x - 2[/tex]

Now we can add on both sides 7/2 and we got:

[tex] y = \frac{1}{2}x -2 + \frac{7}{2}[/tex]

And simplifying we got:

[tex] y = \frac{1}{2}x + \frac{3}{2}[/tex]

And the answer for this case using the general formula:

[tex] y = mx +b[/tex]

Is given by:

Ο 3/2

Answer:12

Step-by-step explanation:

Given

A quarter and a spinner is played simultaneously so

A quarter can show two outcomes i.e. head and tail

While spinner can show 6 outcomes from 1 to 6

So there can be [tex]2\times 6=12[/tex] possible outcomes

(H,1),(H,2) ,(H,3) ,(H,4) ,(H,5) ,(H,6) ,(T,1) ,(T,2) ,(T,3) ,(T,4) ,(T,5) ,(T,6)