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2 years ago

Can someone help me? I’ll reward points + brainalist

Mathematics

1 answer:

Lera25 [3.4K]2 years ago

4 0

Answer:

Step-by-step explanation:

The formula for the area of a trapezoid is: $\frac{1}{2}$ (height)(sum of parallel lines)

Thus, the formula in this question would be: $\frac{1}{2}$ (4)(4+8) which is option C

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Which equation could be used to solve this problem? A number n is 8 less than the sum of 20 and 12. Find the number.

kifflom [539]

(20 + 12) - 8, since the question states n is EIGHT less than the sum of 20 and 12.

3 0

3 years ago

Simplity:<br> 17 (-12 + 3)

Schach [20]

Answer:

$\Huge\boxed{\mathsf{-153}}}$

Step-by-step explanation:

$\Large\boxed{\mathsf{LESSON: ORDER \quad OF \quad OPERATIONS}}}$

$\Large\boxed{\mathsf{SUBJECT: MATH}}}$

To use the order of operations stands for (Parenthesis, Exponents, Multiply, Divide, Add, and Subtract) from left to right.

First, do parenthesis.

17(-12+3)

(-12+3)=-9

17(-9)

Then, multiply.

17*9=153

17(-9)=-153

-153

$\Large\boxed{\mathsf{\Rightarrow -153}}$

The correct answer is -153.

3 0

3 years ago

Simplify the expression 8^2 +9 (12/3x2)- 7

Zarrin [17]

1)12 ÷ 3 = 4.
2) 4×2= 8.
3) 9× 8= 72.
4) 8² = 64
5) 64+ 72 = 136
6) 136 - 7 = 129.

If you just want to simplify the expression you get: 8² + 9(8) - 7
But when you simplify that you get the answer below.
ANSWER: 129

6 0

3 years ago

a line goes through the point(6,-2)and has a slope of -3 what is the value of a if the point (a,7) lies on the line

yaroslaw [1]

Answer:

The value of a is "3", to complete the coordinate point (3,7) on the line.

Step-by-step explanation:

We are given the slope of the line, and also one point through which the line passes. Therefore, we can find the actual equation of the line by using the slope-point form of the line:

$y-y_0=m(x-x_0)\\y-(-2)=(-3)(x-6)\\y+2=-3x+18\\y=-3x+18-2\\y=-3x+16$

Now, we need to find which value of "x" renders a y-value of "7", to complete the coordinate pair (a, 7) as requested. Therefore, we ask for the y-value in the previous equation to be "7", and solve for its associated x-value:

$y=-3x+16\\7=-3x+16\\7-16=-3x\\-9=-3x\\x=\frac{-9}{-3} \\x=3$

Therefore, x = 3

3 0

3 years ago

Read 2 more answers

How to you find the scale area from an actual area?

aliina [53]

Answer:

you use a calculator

Step-by-step explanation:

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2 years ago