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4 years ago

Need help PLz you will get brainliest

Mathematics

2 answers:

KengaRu [80]4 years ago

7 0

Answer:

x=9

Step-by-step explanation:

4x+6+7x+15=120 combine like terms it becomes 11x+21 =120 take away 21 from 120 , leaves you with 11x=99 divide by 11 to get x alone leaves you with x=9 :)

muminat4 years ago

7 0

Answer:

ab = 42

Step-by-step explanation:

4x + 6 + 7x + 15 = 120

combine like terms

11x + 21 = 120

subract 21 from both sides

11 x = 99

x = 9

plug in to double check 9 in 4x + 6 + 7x + 15

meaning 4 times 9 + 6 + 7 times 9 + 15

36 + 6 + 7 times 9 + 15

Then simplify,

42 + 7 times 9 + 15

Then simplify again,

42 + 63 + 15

Then simplify one last time,

42 + 78

and your answer is

120

meaning the X is right so now plug in the X in 4x +6

and your answer is 42

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slava [35]

Answer: x-bar = y-bar = 0 whereas z-bar = 8/3

M= (c^2)/8 which is intern equal to 2 $\sqrt{2}$

Step-by-step explanation:

Find the area, by setting the limits as

= $4\cdot \int _0^{\frac{\pi }{2}}\int _0^2\int _{r^2}^4\:rdzdrd\theta$

$=4\cdot \int _0^{\frac{\pi }{2}}\int _0^2r\cdot \:4-r^3drd\theta$

$=4\cdot \int _0^{\frac{\pi }{2}}4d\theta$

$=8\pi$

Therefore;

Mxy= $\int _0^{2\pi }\int _0^2\int _{r^2}^4\:zrdzdrd\theta$

z-bar = 8/3

M= 8 $\pi$ dividing it into two volume gives us = 4 $\pi$

means $4\pi =\int _0^{2\pi }\int _0^{\sqrt{c}}\int _r^c\:rdzdrd\theta$

$4\pi =\left(\pi c^2-2\pi \frac{c^{\frac{3}{2}}}{3}\right)$

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5 0

4 years ago

How many solutions can be found for the system of linear equations represented on the graph?

Anon25 [30]

Answer:

No Solution

Step-by-step explanation:

As the two lines have the identical slope (-1/2x), that means these two lines are parallel, and therefore they have no solution.

3 0

3 years ago

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Leno4ka [110]

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8 0

3 years ago

Which of the following shows 7.538 correctly rounded to the ones place?

SVETLANKA909090 [29]

Answer:

8.0

Step-by-step explanation:

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3 years ago

Find the area of the polygon.

Anettt [7]

Answer:

option D: 27.5 square units

Step-by-step explanation:

Divide the polygon in 6 figures

see the attached figure

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A1=(1/2)(3)(3)=4.5 units²

Area of figure 2 (rectangle)

A2=(1)(3)=3 units²

Area of figure 3 (rectangle)

A3=(1)(3)=3 units²

Area of figure 4 (right triangle)

A4=(1/2)(3)(3)=4.5 units²

Area of figure 5 (right triangle)

A5=(1/2)(4)(5)=10 units²

Area of figure 6 (right triangle)

A6=(1/2)(1)(5)=2.5 units²

The total area is equal to

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At=4.5+3+3+4.5+10+2.5=27.5 units²

8 0

4 years ago

Read 2 more answers