Please help. Here's the question

Mathematics

1 answer:

kakasveta [241]3 years ago

6 0

He goes 1.5k/h. To get that you divide the km by the hour. Then multiply the hour by 1.5 to get the km. (Ex. 2hrs x 1.5km = 3km)

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HELP

Luden [163]

Perimeter is 2L x 2W or L + L + W + W

A) 12(2) + 24(2) = 72
B) 18(2) + 36(2) = 108
C) 27(2) + 54(2) = 162
D) 36(2) + 36(2) = 144 (and one side is not even twice the length of the other)

Answer: B

4 0

3 years ago

I need to know how tu do percents

cestrela7 [59]

Answer:

What do you mean like what do you need help with like show me

Step-by-step explanation:

4 0

4 years ago

Use addition or substitution to find the value of y for this set of equations. 12x - 5y = 30 y = 2x - 6

lara31 [8.8K]

So we cant do anything until the 'y' in the 2nd problem is by the 2x. So after we move the 2x over the equation will look like this, "-2x+y=-6."
Now that that is set up we can make our equation.
(12x+5y=30) - (-2x+y=-6)

We have to multiply the second equation by -6 in order to cancle out the X's. That comes out to (12x-6y=36)

Now the equation looks like (12x+5y=30) - (12x+6y=36)

After you subtract you have (-y=-6)

divide by (-1) and you're left with y=6

8 0

3 years ago

I will mark brainliest if correct please answer quickly

adell [148]

The area of the figure is 112 square inches.

Step-by-step explanation:

Step 1:

To calculate the value of the composite shape we first divide it into shapes that we know.

In this case, the composite shape consists of a rectangle and a parallelogram attached to it.

If we can calculate the individual areas of the two shapes we should be able to calculate the area of the composite shape.

Step 2:

The rectangle has a length of 22 cm and a width of 8.5 cm. The area of a rectangle is the product of its length and its width.

The area of the rectangle $= (length)(width)= (22)(8.5)=187.$

The area of the rectangle is 187 square cm.

Step 3:

The area of a parallelogram is the product of its base length and its height. The given parallelogram has a base length of 22 cm and a height of 7.5 cm.

The area of the parallelogram $= (baselength)(height) = (22)(7.5) = 165.$