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sveticcg [70]
3 years ago
7

Hello can you help me with this?

Mathematics
1 answer:
zavuch27 [327]3 years ago
3 0

Answer:

x = 25.5

Step-by-step explanation:

suppose RS and MQ are parallel the sum of angle MRS and RMN would be 180 degrees

2x + x + x 78 = 180 add like terms then subtract 78 from both sides

4x = 102 divide both sides by 4

x = 25.5

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4x+5-2=3x+7x-15 I dont get how to get the answer for this please help.
fredd [130]
Hello there! How are you today?

4x + 5 -2 = 3x + 7x - 15

First, we need to get the variable (x) on one side. To do that, we must simplify the right side of the equation, and then decide what to do from there, so let's proceed to do so.

3x + 7x = 10x

4x + 5 - 2= 10x - 15

Now we have x simplified on both sides of the equation. However, we need x to be on one side of the equation in order to solve for it.
Subtract 4x from both sides.

4x - 4x = 0
10x - 4x = 6x

We are now left with:
6x - 15 = 5 - 2

Simplify the right side of the equation.

5 - 2 = 3

6x - 15 = 3

Now we need to isolate x. To isolate x, we need to add 15 to both sides, as x is being subtracted by 15, and adding 15 will cancel it out.

-15 + 15 = 0
3 + 15 = 18

We now are left with:
6x = 18

Now we only have one step left, and that is to solve for x. Since x is being multiplied by 6, we need to perform the opposite order of operations to cancel it out. To do that, we must divide both sides by 6 to solve for x.

6x = 18
Divide both sides by 6.

6x / 6 = x
18 / 6 = 3

We are now left with the solution:

x = 3

I hope this helps!
4 0
3 years ago
Given 2 circles: One with a diameter of 20 cm and another with a 50 cm, find the difference between the 2 areas. Hint: area= pi
Lelu [443]

Answer:

1648.5

Step-by-step explanation:

20cm radius - 10

50cm radius- 25

area = 3.14×10²

3.14×100

=314

area= 3.14× 25²

3.14×625

= 1962.5

1962.5

- 314

_________

1648.5

6 0
3 years ago
Multiply (2x-3) (3x+5)
murzikaleks [220]

Answer:

A, or +10x

Step-by-step explanation:

(2x-3)(3x+5)\\6x^2+10x-9x-15\\6x^2+x-15

Step two would've been

2x*5

Which equals

+10x

5 0
3 years ago
Read 2 more answers
25. Which of the following is equivalent to: 7 2 x 7-4
MissTica

Answer:

It's D or 1/7^2

\frac{1}{7^{2} }

Step-by-step explanation:

They both equal 1/49

3 0
3 years ago
barry has 18 more marbles than heidi.if barry has 92 marbles,write and solve an equation to determine the number of marbles heid
Basile [38]
N= Heidi's marbles
92 - n =18   (Barry's 92 marbles - whatever Heidi has = 18 marbles difference)

92 -n +n = 18 +n   (I added n to each side)
92 = 18+n    
 92 -18 = 18-18 + n   (I subtracted 18 from both sides)
74 = n    Heidi has 74 marbles


4 0
3 years ago
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