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2 years ago

Which values are solutions of the inequality 5 < y -88 , 9. , 13. , 15. , 20

Mathematics

1 answer:

Sladkaya [172]2 years ago

6 0

Answer:

5 is greater than y-8 since 5 is positive it + in the begging +5 while - 8 is less than 0 because it has - in the begging

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8/9 in simplest form

tigry1 [53]

Answer:

its already in its simplest form.

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3 years ago

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A leprechaun places a magic penny under a girl's pillow. The next night there are 2 magic pennies under her pillow. The followi

Mars2501 [29]

Answer:

36 days

Step-by-step explanation:

Since the pennies need to be kept under the pillow in order to be doubled, we're really looking for the day the girl will wake up with 21 billions pennies under her pillow.

The general formula of that geometric sequence will be: t = 1 + 2^(n-1)

We need to find the value of n when t will be over 21,000,000,000.

So, the equation becomes:

21,000,000,001 = 1 + 2^(n-1)

2^(n-1) = 21,000,000,000

log(2^(n-1)) = log(21,000,000,000)

(n-1) * log(2) = log(21,000,000,000)

n-1 = log(21,000,000,000) / log(2)

n-1 = 34.29

n = 35.29

Since it has to be complete days, and we have to reach over 21 billions, then we round it up to 36.

5 0

3 years ago

Each week, Kathy receives a batch of phones that need repairs. The number of phones that she has left to fix at the end of each

adell [148]

Answer:

A.) Kathy starts each week with 108 phones to fix.

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3 years ago

Which of the following is a solution to 3×2= -4+8x?

IceJOKER [234]

Answer:

1.25 or 5/4 or 1 1/4

Step-by-step explanation:

That is the only number that can replace x to make the equation equal.

3 0

3 years ago

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1. If 2(x + 3) = 20, then x =

Fittoniya [83]

Step-by-step explanation:

1) The question reads that

2(x+3)=20

So here we are finding x

We need to multiply the 2 by the ones in the bracket which is the (x+3)

So 2 multiplied by x is 2x

We didn't add the x and the 3 because a variable and a number can't be added, a number and a variable which is the letter can only be multiplied.

And then we also multiply 2 by 3 which is going to be;

2(3)

So it's going to be;

2x+6=20

So now, we group like terms;

2x=20-6(We have -6 because any positive number which crosses an equal sign becomes a negative and when a negative number crosses an equal sign it becomes a positive which is represented by +

2x=14

So now we subtracted 6 from the 20 giving us 14

So now we proceed to divide both sides by 2 to obtain the value of x

So 14 can be divided by 2,

7 times so;

x=7

2) So this question reads;

10x-3(2x+2)=30

With this we are also finding x

So here, we multiply the -3 by the 2x and the +2

So;

-3×2x=-6x

And

-3×2=-6

So now we have;

10x-6x-6=30

So here we can choose to group like terms of subtract the 6x from the 10x right away but grouping would be better so we are going to group which is going to be;

10x-6x=30+6

4x=36

So now we divide both sides by 4 to find the x

and 36 can be divided by 4, 9 times.

So;

x=9

8 0

3 years ago