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LekaFEV [45]
3 years ago
9

Find the height "h" so that its area is equal to 400 square cm.

Mathematics
1 answer:
jenyasd209 [6]3 years ago
8 0

Answer:

h = 20 cm

Step-by-step explanation:

The area of a trapezoid is given by

A = 1/2 (b1+b2) *h

where b1 and b2 are the two bases

We are given a =400 and b1 =27 and b2 =13

400 = 1/2 (27+13) *h

400 = 1/2 (40) *h

400 = 20h

Divide each side by 20

400/20 = 20h/20

20 =h

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12 x 0 = 0 Distributive Property <br>Zero Property Inverse Property<br><br>​
Maurinko [17]

Answer:

Zero Property.

Step-by-step explanation:

The Zero property states that in an equation of:

ab = 0

Either a or b, or both, must be zero to obtain a result of 0.

~

3 0
3 years ago
MATH. Simplify x+7=2​
HACTEHA [7]

Answer:

x=-5

Step-by-step explanation:

When finding x, we basically have to isolate the variable. By isolating the variable, usually doing the opposite operation helps it.

Addition is the opposite of Subtraction

Multiplication is the opposite of Division

Let's dive into this problem!

x+7=2

(we need to isolate x. basically we need to get rid of this 7. How do we do this? since it is added by seven, we can subtract it by both sides to get rid of it on the x side.)

x+7=2

  -7 -7

x=-5

(subtract 2-(-5), this adds to -5)

This is your final answer.

8 0
4 years ago
Read 2 more answers
Select all nat apply.Which steps are involved in multiplying fractions?Multip, the denominators togetherMultiply the numerators
11Alexandr11 [23.1K]

We want to list the steps involved in multiplying fractions;

Taking an example;

\frac{2}{3}\times\frac{3}{4}

First steps are;

- Multiply the numerators together

- Multiply the Denominators together

\begin{gathered} =\frac{2\times3}{3\times4} \\ =\frac{6}{12} \end{gathered}

Next is to;

Check to see if the product can be simplified;

\frac{6}{12}=\frac{1}{2}

So, we get the product to be;

\frac{1}{2}

4 0
1 year ago
marcela tardo dos horas menos que roberto en recorrer una distancia en bicicleta, SI el producto de los dos tiempos es de 48 hor
Kaylis [27]

Answer:

Marcela tardó 6 horas y Roberto tardó 8 horas.

Step-by-step explanation:

Dado que Marcela tardó dos horas menos que Roberto en recorrer una distancia en bicicleta, y sabiendo que el producto de los dos tiempos es de 48 horas, para determinar cuánto tardó cada uno se debe realizar el siguiente cálculo:

M = X

R = X + 2

X x (X + 2) = 48

8 x 6 = 48

Por lo tanto, Marcela tardó 6 horas y Roberto tardó 8 horas.

8 0
3 years ago
If line GH is perpendicular to line HJ, then GJ is ____ HJ.
valentinak56 [21]

Option A: >

Solution:

Given a triangle GHJ.

The line GH is perpendicular to line HJ.

This means the triangle is a right angled triangle.

In ΔGHJ, GH is the base of the triangle and

HJ is a height of the triangle.

Then the third side must be the hypotenuse of the right triangle.

We know that by the Pythagoras theorem,

(\text {Hypotenuse})^2=(\text{Base})^2+(\text{Height})^2

(\text {GJ})^2=(\text {GH})^2+(\text {HJ})^2

This clearly shows that the hypotenuse is greater than the height.

⇒ GJ > HJ

Option A: > is the correct answer.

If line GH is perpendicular to line HJ, then GJ is > HJ.

3 0
3 years ago
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