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3 years ago

Please anyones good in math 13 a/b/c/d

Mathematics

1 answer:

inessss [21]3 years ago

3 0

Answer:

$\frac{7}{15}$

Step-by-step explanation:

4/5*3/3-1/3

4/5*3/3-1/3*5/5

4*3/15-5/15

4*3-5/15

12-5/15

7/15

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One month Ivanna rented 7 movies and 9 video games for a total of $80. The next month she rented 5 movies and 3 video games for

ZanzabumX [31]

Answer:

each movie costs $2.75, each video game costs $6.75

Step-by-step explanation:

x = movies, y = video games

7x + 9y = 80

5x + 3y = 34

simplified to

x = 11/4 , y = 27/4

5 0

3 years ago

Select the correct answer.

Eva8 [605]

Answer:

Equation C: 5/8x + 2..5 = 3/8x + 1.5 + 1/4x

Step-by-step explanation:

Let us go through each of the equations one by one.

Equation A: $2.3y+2+3.1y=4.3y+1.6+1.1y+0.4$

This simplifies to

$5.4y+2=5.4y+2$

which has infinitely many solutions.

Equation B: $32x+25-21x=10x$

this simplifies to

$x+25=0$

$x=-25$

which is exactly one solution.

Equation C: $\frac{5}{8} x+2.5=\frac{3}{8}x+1.5+\frac{1}{4} x$

this simplifies to

$\frac{5}{8} x+2.5=\frac{5}{8} +1.5$

$2.5=1.5$

There's no way this is going to be possible; this equation has no solutions.

Equation D: $\frac{1}{3} x+\frac{1}{7} x=\frac{3}{7} x$

this gives

$\frac{1}{3} =\frac{2}{7} y$

$y=\frac{7}{6}$

which is exactly one solution.

Thus we see that it is equation C that has no solutions.

3 0

3 years ago

What is the exponential form of 100000

Yanka [14]

Answer:

10^4

Step-by-step explanation:

8 0

3 years ago

1 fourth to the 3rd power as a fraction

lukranit [14]

1/64 is the answer as a fraction

7 0

3 years ago

Read 2 more answers

Evaquate<br>-18÷3×8(-8)\-5×-2+(-2)

MArishka [77]

Answer:

-12/5 - 2

Step-by-step explanation:

-18÷3×8(-8)/-5×-2+(-2) =

-6×8(-8)/-5×-2+(-2) =

-48(-8)/-5×-2+(-2) =

6/-5×-2+(-2) =

-12/5 - 2

4 0

3 years ago

Read 2 more answers