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KIM [24]
3 years ago
7

Robert has seven more than five times the number of video games Sam has. All together they have 25 video games. How many video g

ames does Robert have?
Mathematics
1 answer:
s2008m [1.1K]3 years ago
3 0

Answer:

Step-by-step explanation:

r = 5s + 7

r + s = 25

5s + 7 + s = 25

6s + 7 = 25

6s = 25 - 7

6s = 18

s = 18/6

s = 3 <=== sam has 3 video games

r = 5s + 7

r = 5(3) + 7

r = 15 + 7

r = 22 <=== robert has 22 video games

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andreyandreev [35.5K]

Answer:

3.5% of 20, (0.035)*20, and 7% of 10

Step-by-step explanation:

Converting the mixed number (3 1/2) to a decimal yields 3.5, so 3.5% of 20 is correct.

3 1/2 is not equal to 3 1/2%, so 3 1/2 * 20 is not correct.

Converting the percentage to a decimal yields .035 which makes .35 too large, so (0.35) * 20 is not correct.

Changing the percentage to a decimal yields .035, so (0.035) * 20 is correct.

If you divide 20 by 2, you get 10, and if you multiply 2 by 3 1/2, you get 7. The 2 remains part of the expression, so it is equal to 3 1/2 of 20.

4 0
3 years ago
Find the equation of the axis of symmetry and the coordinates of the vertex of the graph of each function y= 4x^2 - 2
alisha [4.7K]

Answer:y

=

4

x

2

−

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Step-by-step explanation:

7 0
3 years ago
What is the equation in point-slope form of the line passing through (4, 0) and (2, 6)? (5 points) y = 4x − 2 y = 2x − 4 y = −3(
DIA [1.3K]

For this case we have that by definition, the point-slope equation of a line is given by:

y-y_ {0} = m (x-x_ {0})

We have the following points:

(x_ {1}, y_ {1}) :( 2,6)\\(x_ {2}, y_ {2}) :( 4,0)\\m = \frac {y_ {2} -y_ {1}} {x_ {2} -x_ {1}} = \frac {0-6} {4-2} = \frac {-6} {2} = -3

We chose a point:

(x_ {0}, y_ {0}) :( 4,0)

Substituting in the equation we have:

y-0 = -3 (x-4)\\y = -3 (x-4)

Finally, the equation is: y = -3 (x-4)

Answer:

OPTION C

6 0
3 years ago
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natka813 [3]

Answer:

simplify -1(3/5)÷(-2/3) = 9/10

=90/100

= .90 and there's your answer

5 0
3 years ago
Read 2 more answers
Please help with the problem
worty [1.4K]

Answer:

95%

Step-by-step explanation:

0.6 of 40 is 24, she bought 24 green balloons.

24 × 1.5 = 36, she bought 36 yellow balloons.

So we have

40 red

24 green

36 yellow

Then from the rest of the information, 2 red, 2 green, and 1 yellow balloon all popped.

We now have

38 red

22 green

35 yellow

for a total of:

95 balloons out of 100 original balloons, 95%

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3 years ago
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