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Anastaziya [24]
3 years ago
5

Find the value of x.

Mathematics
1 answer:
nadezda [96]3 years ago
6 0

Answer:

25

Step-by-step explanation:

The median of a trapezoid equals one half of the sum of the bases

AC is a median and EB and DF are the bases.

hence AC = 1/2(EB + DF)

We are given that EB = 13 and that AC = 19. And we need to find DF

To do so we plug in what we are given and solve for DF

AC = 1/2(EB + DF)

AC = 19, EB = 13

19 = 1/2(13 + DF)

Now solve for DF

* Multiply both sides by 2*

19 * 2 = 38

1/2(13 + DF) * 2 ( the 1/2 and 2 cancel out and we're left with 13 + DF )

We then have 38 = 13 + DF

* Subtract 13 from both sides *

38 - 13 = 13 - 13 + DF

We get that DF = 25

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Answer:

2(n+1)+2

You start with two greens and two columns of two orange squares while adding two orange squares each time. So, the bolded part is the green squares that stay the same. The 2(n+1) represents the two orange columns that increase by one block on each side per image.

4 0
2 years ago
Solve for these letters<br> X<br> Y<br> Z
tester [92]
Z = 140
X = 40
Y = 40
Explanation:
Z and the angle given (140 degrees) are vertical angles, and are therefore congruent
We know that x and y are vertical angles, so they are also congruent to each other
You know that together, the angles have to add up to 360
140 + 140 + x + y = 360
Another way of putting it:
360-280 = 80
Now, we have to divide by two since we need to find x AND y
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Therefore, your answers for x and y are 40
To double check, you can add up the angles and see if they equal 360
140 + 140 + 40 + 40
280 + 80 = 360
7 0
3 years ago
16. Find x if x= 34<br> A. 1156<br> B. 34<br> C. +1,156<br> D. 1.156
7nadin3 [17]

Answer:

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Step-by-step explanation:

The equation can be..

x= 1,156÷34

The sum of this equation would lead to x=34, since 34×34 is 1,156.

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3 years ago
Express each statement using an inequality involving absolute value: The height of the plant must be within 2 inches of the stan
34kurt

Answer:

  |h-13| ≤ 2

Step-by-step explanation:

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  h - 13

This value is allowed to be positive or negative, but its absolute value must not exceed 2 inches. Thus, the desired inequality is ...

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Solve for b<br> –1 + 2b − 9 = 10b − 10
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Answer:

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I'm positive

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