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3 years ago

9th out 10 questions

Mathematics

1 answer:

Sloan [31]3 years ago

3 0

The correct answer is 15.

This is because the relationship between x and y is y=3x, as can be verified by the other points in the table.

3 = 3(1), 6 = 3(2), 24 = 3(8).

When we plug in 5 for x into our equation, we get 3(5), which equals 15.

Therefore, your answer is 15.

Hope this helps!

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Can somebody help me please with this problem in mathematics.

aleksandr82 [10.1K]

Answer:

$15 × .8 = $12

$12 × .75 = $9

4 0

1 year ago

Which graph shows a set of ordered pairs that represent a function? On a coordinate plane, solid circles appear at the following

NemiM [27]

Answer:

1,3) or c

Step-by-step explanation:

6 0

3 years ago

Bob's gift shop sold a record number of cards for Mother's Day. One salesman sold 20 cards, which was 5% of the cards sold for M

iren [92.7K]

Answer:

400 cards

Step-by-step explanation: $20\div5$ %

Calculate

$\frac{20}{0.05}$

Multiply both the numerator and denominator with the same integer

$\frac{2000}{5}$

Cross out the common factor

$400$

I hope this helps you

:)

8 0

2 years ago

Jackson’s age was 2/5 of the age he will be 20 years from now 7 years ago. How old is Jackson now?

bonufazy [111]

<h3>The present age of Jackson is 25 years old</h3>

Solution:

Let the present age of Jackson be "x"

Therefore

Jackson's age 7 years ago = x - 7

And, Jackson's age after 20 years = x + 20

From given question,

Jackson’s age was 2/5 of the age he will be 20 years from now 7 years ago

$\frac{2}{5} \times (x + 20) = x - 7\\\\2(x + 20) = 5(x - 7)\\\\2x + 40 = 5x - 35\\\\5x - 2x = 40 +35\\\\3x = 75\\\\Divide\ both\ sides\ by\ 3\\\\x = 25$

Thus present age of Jackson is 25 years old

4 0

3 years ago

What is the solution for the system of equations? -4x+y=-2 y+5=-6x

Aliun [14]

Answer:

(-3/10,-16/5)

Step-by-step explanation:

One way to solve a system of equations is by elimination. We can take one equation and subtract the other equation from it to cancel out on of the variables making the equation into something we can solve. In this case the Y's will cancel out because we have 1 Y in each equation

-4x+y=-2

6x+y=-5 subtract

-4x-6x=-10x

y-y=0

-2-(-5)=3

so our equation is -10x=3 and we can solve for x giving us x=-3/10

now we can plug -3/10 in for x into either of the original equations and solve for Y

y+5=-6(-3/10)

y+5=9/5

y=-16/5

so our answer is (-3/10,-16/5)

I hope this helps and please don't hesitate to ask if there is anything still unclear!

6 0

3 years ago