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Tom [10]
3 years ago
9

ABCD is a rectangle. If AC = 2x + 10 and BD = 56, find the value of x.

Mathematics
1 answer:
TEA [102]3 years ago
7 0

9514 1404 393

Answer:

  (b)  23

Step-by-step explanation:

The diagonals of a rectangle are the same length, so ...

  AC = BD

  2x +10 = 56

  x +5 = 28 . . . . . divide by 2

  x = 23 . . . . . . . . subtract 5

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I NEED HELP PLEASE !!!!
Sergio [31]

Answer:

Step-by-step explanation:

2x + 3.5x + 15 = -1.5

5.5x + 15 = -1.5

5.5x = -16.5

x = -3

y = 3.5(-3) + 15

   = -10.5 + 15

    = 4.5

(-3, 4.5)

7 0
3 years ago
write the slope-intercept form of the line with a slope of 2 and a y-intercept of -4. include your work in your final answer.
IgorLugansk [536]
I cant really show you how to graph this but i can try to explain it. you would make a 4 quadrant graph and do rise over run.
1)start by making the graph
2) on the line of the graph marked Y is where you would put -4
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5 0
3 years ago
BD is tangent to circle O at C, m(arc AEC) = 280, and m(arc ACE) = 140. Find m (The figure is not drawn to scale.)
Zepler [3.9K]

Answer:

The correct answer is second option 60°

Step-by-step explanation:

From the figure we can write,

measure of arc AEC = measure of arc AE + measure of CE

measure of arc ACE = measure of AC +  measure of CE

measure of arc AEC + measure of arc ACE = 280 + 140 = 420°

measure of arc AE + measure of CE + measure of AC +  measure of CE = 420

measure of arc AE + measure of CE +  measure of AC = 360°

measure of CE = 420 - 360 = 60°

The correct answer is second option 60°

8 0
2 years ago
Giving brainlist to whoever answers plz
Elanso [62]

Answer:

Okay! It should be the 3 one.

-2(3)+30=24

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
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tatuchka [14]
Average is just the total divided by the number of things you added up.

You've been given 4 numbers.

So just add 7.75+7.25+7.33+7.6 and then divide that by 4.

the answer is therefore 29.93/4

=7.4285

You can check if that seems right by just looking at the numbers, the average will be inbetween the smallest and largest numbers, so it matches up.

7 0
3 years ago
Read 2 more answers
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