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3 years ago

A system of equations is shown below.

Mathematics

1 answer:

Sedaia [141]3 years ago

8 0

Answer:

6, 0

Step-by-step explanation:

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Franky's age is 5 years less that 1/2 his mothers age. If Franky is 13 years old,write an equation to determine his mothers age

Alik [6]

Answer:

1/2x-5=13

Step-by-step explanation:

Let x= Frankie’s mother’s age

Half his mother’s age= 1/2x

5 less than that=1/2x-5

We know that Frankie is 13 so that equation is equal to Frankie’s age, which is 13.

Hope this helps.

4 0

3 years ago

Leo buys 5 DVDs for 60$. At this rate, how much would he pay for 3 DVDs?

Dima020 [189]

60 divided by 5, is 12. In which case, 12 times 3... Is 36$. So Leo would pay 36$ for 3 DVDs at the rate of 12$ for each DVD

3 0

3 years ago

Read 2 more answers

Celine is estimating the number of tiles in a mosaic. There are 7 different colors, and 472 tiles of each color. There are also

ValentinkaMS [17]

Answer:

3,400 tiles

Step-by-step explanation:

Since there is 472 tiles of each 7 colors,

Multiply 472 by 7 to get 3,304

Then you would add the 96 blank tiles to get exactly

3.400 tiles.

8 0

3 years ago

Whats x solve 1/3x-2/3=-18

Kazeer [188]

Answer:

$x=-52$

Step-by-step explanation:

multiple everything by 3 to get rid of the fractions

$3(1/3x-2/3=-18)\\1x-2=-54\\$

rewrite

$x-2=-54$

add 2 to both sides

$x-2+2=-54+2\\x=-52$

8 0

3 years ago

Read 2 more answers

A certain rumor spreads through a community at the rate dy/dt= 2y(1−y) , where y is the proportion of the population that has he

ss7ja [257]

Answer:

1/2 or 50% of the population has heard the rumor when it is spreading fastest.

Step-by-step explanation:

We need to take the derivative with respect to y from the r(y) = dy/dt = 2y(1-y) and equal to zero. At this condition we maximize the function and will get the maximum of the rumor spreading.

$\frac{d(r(y))}{dy}=2-4y=0$

Therefore we just need to find y:

$y=2/4=1/2$

So 1/2 or 50% of the population has heard the rumor when it is spreading fastest.

I hope it helps you!

3 0

3 years ago