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Dafna1 [17]
3 years ago
14

80 x 80 + 10,000 = ?

Mathematics
1 answer:
ivann1987 [24]3 years ago
8 0
The answer to this equation is 16400 for sure ..
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Tim has some marbles.
snow_tiger [21]

Answer:

Let x = the number of marbles Tim has

Let 2x = the number of marbles Sue has

x + 2x + 15 = 63

3x = 48

x = 16 marbles

Step-by-step explanation:

3 0
2 years ago
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Help please! show work thanks
Andre45 [30]
Answers
b = 2.77 m
A = 43.0°
C = 111.1°

cosine law to find b

b^2 = a^2 + c^2 -2ac \cos B \\ \\
b = \sqrt{a^2 + c^2 -2ac \cos B} \\ \\
b = \sqrt{4.33^2 + 5.92^2 - 2(4.33)(5.92) \cos 25.9} \\
b = 2.7708\ m

b = 2.7708\ m

Find angle A with sine law

\displaystyle
\frac{\sin A}{a} = \frac{\sin B}{b} \\ \\
\sin A = \frac{a \sin B}{b} \\ \\
A = \sin^{-1} \left[ \frac{a \sin B}{b}  \right] \\ \\
A = \sin^{-1} \left[ \frac{4.33 \sin 25.9}{2.7708}  \right]  \\ \\
A = 43.0467020

Find C with angles in triangle sum to 180

A + B + C = 180
C = 180 - A - B
C = 180 - 43.0467020 - 25.9
C = 111.1
6 0
3 years ago
The cost of a plumbing repair is given by the equation y=45x+30, where x is the number of hours the repair takes and y is the to
arlik [135]
First you subtract the 30 from 300 and than 270/45 and your answer will be A. 6
6 0
3 years ago
144 coins are divided equally among some
nalin [4]

Answer:

Consider the number of children to be x.

So, 144 coins were divided amongst x children.

For x-3 children, each child would have 16 coins

So, (x-3)*16=144

Solving for x, x-3=144/16

or x-3=9

or x=9+3=12

Answer is 12

3 0
3 years ago
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HELP ME PLEASE!!! IMPORTANT!
Masteriza [31]

Answer:

≤  Note: without the equal

Step-by-step:

√7 =2.645

14/5 = 2.8

6 0
3 years ago
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