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KATRIN_1 [288]
3 years ago
12

21x―18y+11 can you help me

Mathematics
1 answer:
Iteru [2.4K]3 years ago
3 0

Answer:

The answer is 14.

Step-by-step explanation:

You solve to left to right. so, you subtract 21 by 18 first (3) then add it by 11. (14)

Brainiest please

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(6x-5)-(7x+2) explain it please​
natka813 [3]
Simplifying
(6x + -5) + -1(7x + 2) = 0

Reorder the terms:
(-5 + 6x) + -1(7x + 2) = 0

Remove parenthesis around (-5 + 6x)
-5 + 6x + -1(7x + 2) = 0

Reorder the terms:
-5 + 6x + -1(2 + 7x) = 0
-5 + 6x + (2 * -1 + 7x * -1) = 0
-5 + 6x + (-2 + -7x) = 0

Reorder the terms:
-5 + -2 + 6x + -7x = 0

Combine like terms: -5 + -2 = -7
-7 + 6x + -7x = 0

Combine like terms: 6x + -7x = -1x
-7 + -1x = 0

Solving
-7 + -1x = 0

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '7' to each side of the equation.
-7 + 7 + -1x = 0 + 7

Combine like terms: -7 + 7 = 0
0 + -1x = 0 + 7
-1x = 0 + 7

Combine like terms: 0 + 7 = 7
-1x = 7

Divide each side by '-1'.
x = -7

Simplifying
x = -7
5 0
3 years ago
If a 4 x 16 riangle has the same area as a square, what is the length of a side of the square
m_a_m_a [10]

Answer: \bold{4\sqrt2}

<u>Step-by-step explanation:</u>

A_{triangle}=\bigg(\dfrac{1}{2}\bigg)b\times h

A_{triangle}=\bigg(\dfrac{1}{2}\bigg)4\times 16

              =\bigg(\dfrac{1}{2}\bigg)64

              =32

A_{square}= s^2

32 = s^2

\sqrt{32}=s

\sqrt{\underline{2\cdot 2}\cdot \underline{2\cdot 2}\cdot 2}=s

2\cdot 2\sqrt{2}=s

4\sqrt{2}=s


7 0
3 years ago
What is the surface area of the triangular prism?
AveGali [126]

Answer:

My friends

Step-by-step explanation:

the surface area of the triangular prism is

60 square feet

8 0
3 years ago
Read 2 more answers
Help PLS ASAP!!!!!!!!!!!!
vichka [17]

Answer:

The answer is

" THe middle triangle is scalene"

and "the right and left triangle are isosceles"

Step-by-step explanation:

This is because B, and D are wrong.

B is wrong because all three sides are different lengths

D is wrong because the right and left triangles are not equalateral

give brainliest please!

hope this helps :)

8 0
2 years ago
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Figure 1 is transformed to Figure 3, as shown in the diagram. Describe the transformation. A) dilation, then reflection B) refle
tresset_1 [31]
C. hope this helps...
3 0
4 years ago
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