What is the area of in square centimeters, of the trapezoid 8.6, 6.4, 12.9

Mathematics

1 answer:

zloy xaker [14]3 years ago

4 0

You have to let us see a picture but you take length x width and divide by 2 to get your answer

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Solve |-4b-8|+|-1-b^2|+2b^3. b= -2 show steps please .

evablogger [386]

Ok, first put in the -2 for each b. That gives:
|-4(-2)-8|+|-1(-(-2))^2|+2(-2)^3
Let's do each section.
The first section is |-4(-2)-8)|
-4 times -2 is 8, minus 8 is 0. The absolute value of 0 is still 0.
Now we move on to |-1(-(-2))^2)|
First we do exponents
-(-2) is 2, and 2^2 is 4. 4 times -1 is -4. The absolute value of -4 is 4
Now the last section, 2(-2)^3
Exponents first: (-2)^3 is -2 * -2 * -2, which is -8.
-8*2=-16.
0+4+(-16)=-12

7 0

3 years ago

James took two math test.he score 86 points on the second .This was 18 points higher

Alexxx [7]

The first test was 68 points

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3 years ago

Find the solution to the equations. 2х-у=-3 х+у=0 0,0 -1,1 1,-1

kobusy [5.1K]

It’s 0,0. The correct answer!

3 0

3 years ago

Read 2 more answers

Mario was making cookies. He mixed 2½ cups of flour, 1¼ cups of sugar and ½ cup of brown sugar together in a bowl. How many cups

STatiana [176]

Answer:

4 1/4

Step-by-step explanation:

2 1/2 + 1 1/4 + 1/2 = 5/2 + 5/4 + 1/2

LCM = 4

5/2 x 2/2 = 10/4

5/4 = 5/4

1/2 x 2/2 = 2/4

10/4 + 5/4 + 2/4 = 17/4

= 4 1/4

Therefore he put 4 1/4 cups altogether.

7 0

2 years ago

-8

nevsk [136]

Answer:

take your pick. Each has its own reason.

Step-by-step explanation:

As with a lot of "doesn't belong" problems, the one that is different depends on your criteria. In the attached figure, each one "doesn't belong" for a different reason. Those reasons are listed below each number line.

I might choose the lower left: "addition, not subtraction", as it is the only one with arrows in the same direction. That makes its difference from the others more obvious, perhaps.

6 0

3 years ago