20 points to help with this

Mathematics

1 answer:

Vikentia [17]2 years ago

6 0

Answer:

Help what?

Step-by-step explanation:

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I NEED HELP!!!!!!!!!!!

Jlenok [28]

Answer:

Step-by-step explanation:

a) y = $\frac{7}{2}$ X

b) 7/2 * 4 = 157.5

c) y = $\frac{7}{2}$ X + 42.43

d) 70.71 more minutes to finish reading :)

5 0

2 years ago

What is the slope of the line?

Brilliant_brown [7]

Answer:

thanks

Step-by-step explanation:

4 0

2 years ago

Which of the following a, b, and c values would you use in the Quadratic formula to solve:

aliina [53]

The answer would be B

4 0

3 years ago

Solve both by substitution method (algebra 2) and show work please<br><br> -2x-7y=22<br>-7x-5y=-1

Alex17521 [72]

$\bf \begin{cases}
-2x-7y=22\\
-7x-5y=-1
\end{cases}\qquad \textit{let's solve the \underline{second one} for "x"}
\\\\\\
-7x-5y=-1\implies -7x=5y-1\implies x=\cfrac{5y-1}{-7}
\\\\\\
\boxed{x=\cfrac{1-5y}{7}}\impliedby \textit{now, let's substitute it in the \underline{first one}}
\\\\\\$

$\bf -2\left( \frac{1-5y}{7} \right)-7y=22\implies \cfrac{10y-2}{7}-7y=22
\\\\\\
\textit{now, let's multiply both sides by 7, to toss the denominator}
\\\\\\
7\left( \cfrac{10y-2}{7}-7y \right)=7(22)\implies 10y-2-49y=154
\\\\\\
-39y=156\implies y=\cfrac{154}{-39}\implies \boxed{y=-4}
\\\\\\
\textit{now, let's use that in the \underline{first one}}
\\\\\\
-2x-7(-4)=22\implies -2x+28=22\implies 6=2x\implies \cfrac{6}{2}=x
\\\\\\
\boxed{3=x}$

4 0

2 years ago

Look at this set of 8 numbers:33769234 how would the range change if the number 6 replaced the number 7 in the set

klio [65]

Put the numbers in order

2,3,3,3,4,6,7,9.....the range is the largest number minus the smallest number
so as it is, the range is (9 - 2) = 7

if u replaced the 7 with a 6...
2,3,3,3,4,6,6,9...the range is STILL (9 - 2) = 7

3 0

2 years ago