It says to use rounding or compatible numbers to estimate the sum.<br> first problem is 24 + 8

(c) In a math competition, Roberto scored 535 points and Senaida scored 450 points. By how

Marrrta [24]

Answer:

probably 85 points

Step-by-step explanation:

535 - 450

4 0

3 years ago

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Find the value of x.

lawyer [7]

Answer:

$\huge\boxed{x=\sqrt{70}}$

Step-by-step explanation:

ΔABC and ΔADB are similar (AAA).

Therefore the corresponging sides are in proportion:

$\dfrac{AB}{AD}=\dfrac{AC}{AB}$

Substitute:

$AB=x\\AC=7+3=10\\AD=7$

$\dfrac{x}{7}=\dfrac{10}{x}$ <em>cross multiply</em>

$(x)(x)=(7)(10)\\\\x^2=70\to x=\sqrt{70}$

4 0

3 years ago

I need big help, what are the step by step math problem and the answer to (18/-2)^2?

Serggg [28]

Hii :))

$\tt \: ( \frac{18}{ - 2} ) ^{2} \\ \tt \: = (- \frac{18}{2} ) ^{2} \\ \tt = \frac{-18 \times -18}{-2 \times -2} \\ = \tt \frac{324}{4} \\ = \boxed{\tt\:81}$

﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋

$\overbrace{ \underbrace{ \sf \: \infty \: Carry \: on \: Learning \: \infty }}$

ᴛʜᴇᴇxᴛʀᴀᴛᴇʀᴇꜱᴛʀɪᴀʟ

8 0

3 years ago

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What is the length of segment AE?

DedPeter [7]

By looking at the bottom length of both triangles, we can determine the scale from one to the other.

C-E = 30 units
D-F = 28 units

This can be translated as the fraction 15/14.

So if we look back at the possible answers, both B and C are likely candidates for being the answer.

But to get the answer, we multiply 24 X (15/14).

Which is 25.7, or 25 and 5/7. Your answer is C.

7 0

3 years ago

What digit is in the Hundred Thousand Place? 645,892

ASHA 777 [7]

The digit 6 is in the Hundred Thousand Place.

3 0

4 years ago

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It says to use rounding or compatible numbers to estimate the sum. first problem is 24 + 8