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3 years ago

7(-3x+2) - 11x +18what's the answer?

Mathematics

2 answers:

tiny-mole [99]3 years ago

5 0

The correct answer is 10x - 4. Hope this helps!!

vichka [17]3 years ago

5 0

Answer:

-x+18

Step-by-step explanation:

7(-3x+2)-11x+18

-21x-11x+18

-x+18

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Four consecutive even integers are such that the sum of the second and fourth is 76. What is the sum of the first and third inte

Arada [10]

Answer:

Step-by-step explanation:

Consecutive even integers have a difference of 2 between them

let n be the first integer, then

n + 2, n + 4, n + 6 are the second, third and fourth, then

n + 2 + n + 6 = 76 ( sum of second and fourth )

2n + 8 = 76 ( subtract 8 from both sides )

2n = 68 ( divide both sides by 2 )

n = 34

Thus the 4 even integers are

34, 36, 38, 40

sum of first and third = 34 + 38 = 72

4 0

3 years ago

Please help me with this question...please

KATRIN_1 [288]

Answer:

it is c but probably be but I'm leaning towards c

6 0

3 years ago

Z varies directly with x and inversely with y. When x=6 and y=2, .z=15. Write function that models variation. Then, find z when

tester [92]

$\bf \begin{array}{cccccclllll}
\textit{direct proportional variation}\\\\\textit{something}&&\textit{varies directly to}&&\textit{something else}\\ \quad \\
\textit{something}&=&{{ \textit{some value}}}&\cdot &\textit{something else}\\ \quad \\
y&=&{{ k}}&\cdot&x
\\
&& y={{ k }}x
\end{array}\\ \quad \\$

$\bf \textit{inverse proportional variation}\\\\
\begin{array}{llllll}
\textit{something}&&\textit{varies inversely to}&\textit{something else}\\ \quad \\
\textit{something}&=&\cfrac{{{\textit{some value}}}}{}&\cfrac{}{\textit{something else}}\\ \quad \\
y&=&\cfrac{{{\textit{k}}}}{}&\cfrac{}{x}
\\
&&y=\cfrac{{{ k}}}{x}
\end{array}$

$\bf \\\\
-------------------------------\\\\
\textit{z varies directly with x}\implies z=kx
\\\\
\textit{and inversely with y}\implies z=\cfrac{kx}{y}
\\\\\\
\textit{we also know that}\quad 
\begin{cases}
x=6\\
y=2\\
z=15
\end{cases}\implies 15=\cfrac{k\cdot 6}{2}\implies 30=6k$

$\bf \cfrac{30}{6}=k\implies \boxed{5=k}\impliedby \textit{constant of variation}
\\\\\\
thus\implies z=\cfrac{5x}{y}\\\\
-------------------------------\\\\
\textit{what's "z" when }
\begin{cases}
x=4\\
y=9
\end{cases}\implies z=\cfrac{5\cdot 4}{9}$

4 0

4 years ago

what is the greatest common factor of two numbers is 4. The sum of the numbers is 76. What are the two numbers?

melisa1 [442]

Answer:

4 and 72

Step-by-step explanation:

8 0

3 years ago

Find an equation for the line that passes through the points (-4,-1) and (6,-5)

Sergio [31]

Answer:

y= -2/5x-13/5

Step-by-step explanation:

4 0

3 years ago

7(-3x+2) - 11x +18what's the answer?​

7(-3x+2) - 11x +18what's the answer?