Random Questions To Answer For Points.

Mathematics

1 answer:

Fantom [35]3 years ago

6 0

Answer:

The rate is the distance divided by the time.

60 feet in 10 seconds = 60 ft / 10 sec = 6 ft / sec

42 feet in 6 seconds = 42 ft / 6 sec = 7 ft / sec <--- We have a winner!

Step-by-step explanation:

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-2m(m + n - 4) + 5(-2m + 2n) + n(m + 4n - 5)

e-lub [12.9K]

I provided the answer in photo

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3 years ago

Explain when each method(graphing, substitution,linear combinations) is a good method to find a solution to a system of equation

PSYCHO15rus [73]

Graphing is a good method when you have small integers or fractions as your slope.
Substitution is a good method when you have two equations, and when one of the coefficient of the variables is one.
Linear combinations is a good method when you have the same coefficient for the same variable in 2 different equations.

6 0

3 years ago

Read 2 more answers

What's 5 - the square root of x + 10 = the square root of 7 - x

Tcecarenko [31]

$\bf 5-\sqrt{x+10}=\sqrt{7-x}\impliedby \textit{squaring both sides}
\\\\\\
(5-\sqrt{x+10})^2=(\sqrt{7-x})^2
\\\\\\
(5^2)-10\sqrt{x+10}+(x+10)=7-x
\\\\\\
35-10\sqrt{x+10}+x=7-x\implies 28-10\sqrt{x+10}+2x=0
\\\\\\
2x+28=10\sqrt{x+10}\implies x+14=5\sqrt{x+10}\impliedby 
\begin{array}{llll}
squaring\ both\\
sides\ again
\end{array}
\\\\\\
$

$\bf (x^2)+28x+(14^2)=5^2(x+10)\implies x^2+28x+196=25x+250
\\\\\\
\begin{array}{lcclll}
x^2&+3x&-54&=0\\
&\uparrow &\uparrow \\
&-6+9&-6\cdot 9
\end{array} \implies (x+9)(x-6)=0\implies 
\begin{cases}
x+9=0\\
\boxed{x=-9}\\
-----\\
x-6=0\\
\boxed{x=6}
\end{cases}$

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3 years ago

A rectangle prism has edge lengths of 3.5 inches 2.5 inches and 1.5 inches how many cubes with side lengths of 0.5 inches would

likoan [24]

The answer is 15 cubes with side lengths of 0.5 inches. I did this by adding up all the edge lengths then dividing the answer by 0.5 inches

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4 years ago

Hannah buys 3 packs of 36 exposure film and 2 packs of 24 exposure film. She uses 8 rolls of film. How many rolls does she have

vitfil [10]

108 + 48 = 156
156-8= 148
148 rolls left
is your answer

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3 years ago