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2 years ago

PLEASE HELP ME IN MATH ITS URGENT

Mathematics

2 answers:

Vedmedyk [2.9K]2 years ago

7 0

the answers is A.) Corresponding

the dude above me who answered just guessed. this is literally 7th grade work easy

Alika [10]2 years ago

4 0

Answer:

Step-by-step explanation:

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Consider the expressions (3m+2n−6) and (−4−6m+7n). What is the sum of the expressions for n = -2 and m = 5?

faltersainse [42]

Answer:

the answer is 25m + 5n + 15

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2 years ago

2.3+0.02(x+20)-4.8=-9<br><br> Solve for x

Naya [18.7K]

Answer:

$x=-345$

Step-by-step explanation:

$2.3+0.02\left(x+20\right)-4.8=-9$

$\mathrm{Multiply\:both\:sides\:by\:}100$

$2.3\cdot \:100+0.02\left(x+20\right)\cdot \:100-4.8\cdot \:100=-9\cdot \:100$

$230+2\left(x+20\right)-480=-900$

$\mathrm{Subtract\:}230-480\mathrm{\:from\:both\:sides}$

$230+2\left(x+20\right)-480-\left(230-480\right)=-900-\left(230-480\right)$

$2\left(x+20\right)=-650$

$\mathrm{Divide\:both\:sides\:by\:}2$

$\frac{2\left(x+20\right)}{2}=\frac{-650}{2}$

$x+20=-325$

$\mathrm{Subtract\:}20\mathrm{\:from\:both\:sides}$

$x+20-20=-325-20$

$\bold{x=-345}$

5 0

2 years ago

Suppose y varies directly with x. Write a direct variation equation that relates x and y. Then find the value of y when x= 18.

DIA [1.3K]

Answer:

y=kx

y=48

Step-by-step explanation:

y=kx

8=3k

k=8/3

y=kx

y=8/3 × 18

y=48

4 0

1 year ago

Which statement best describes f(x)=

kotegsom [21]

Answer:

Step-by-step explanation:

the domain of this is x>=7

the range is x<=1

so 6 is in neither

8 0

2 years ago

Number 13 is what I need done

Nadusha1986 [10]

Instead of using an = sign we use $\leq$ becuase its less than or equal to 100 dollars.

The equation of the line is y=10x+7

sub in 100 for y and the inequallity sign

10x+7 $\leq$ 100

solve so x is isolated

10x $\leq$ 93
x $\leq$ 9.3

technically the answer is 9 because you cant buy a fraction of a CD

5 0

2 years ago