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2 years ago

7

Elena has one and a half times as much money as ramon. together they have $225. how much money does each have? choices for ramon

's amount: 80, 90, 95

1 answer:

torisob [31]2 years ago

6 0

E= 1.5R
E+R=225
1.5R+R=225
2.5R=225
R= 90

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Math help please <br><br> Thanks <br> A lot

babunello [35]

Answer:

2 hours: 3968 <u>[I don't understand the $ sign in the answer box]</u>

At midnight: 12137

Step-by-step explanation:

The bacteria are increasing by 15% every hour. So for every hour we will have what we started with, plus 15% more.

The "15% more" can be represented mathematically with (1 + 0.15) or 1.15. Let's call this the "growth factor" and assign it the variable b. b is (1 + percent increase).

Since this per hour, in 1 hour we'll have (3000)*(1.15) = 3450

At the end of the second hour we're increased by 15% again:

(3450)*(1.15) = 3968.

Each additional hour add another (1.15) factor, If we assign a to be the starting population, this can be represented by:

P = a(1.15)^t for this sample that increase 15% per hour. t is time, in hours.

If a represents the growth factor, and P is the total population, the general expression is

P = ab^t

Using this for a = 3000 and b = 1.15, we can find the total population at midnight after starting at 2PM. That is a 10 hour period, so t = 10

P = (3000)*(1.15)^10

P = 12137

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2 years ago

If x-2y=1, what is the value of 2 3x-6y?

MaRussiya [10]

I hope this helps you

4 0

2 years ago

Haleigh split 4/9 of a gallon of juice into 8 cups. How much juice was in each cup?

Brut [27]

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▹ Answer

<em>1/18 of a gallon of juice in each cup.</em>

▹ Step-by-Step Explanation

Since we have 4/9 of a gallon of juice for 8 cups, we will divide to find the amount of juice in each cup.

$\frac{4}{9} / 8$

Since this operation is division, we have to change 8 to it's reciprocal which is 1/8:

$\frac{4}{9}/ \frac{1}{8} = \frac{4}{72} = \frac{1}{18}$

Our final answer will be 1/18 of a gallon of juice in each cup.

Hope this helps!

CloutAnswers ❁

━━━━━━━☆☆━━━━━━━

5 0

2 years ago

WILL MARK AS BRAINLIEST!!!!!!!!!!!!!!!

Nana76 [90]

(D.) It should be a bit less than 6 quarts (5.75 / 5 & 3/4 to be exact)

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3 years ago

Read 2 more answers

If anybody now this pls help my homework due TOMORROW

Nezavi [6.7K]

Answer:

<u><em>Part A:</em></u> D. $y = (x + 1)(x+3)\\$

<u><em>Part B:</em></u> C. $3x(x-3) = 0\\$

Step-by-step explanation:

For part A) we just have to plug in 0 for x and solve for y until we find the equation that says 3 is the value for y when x is 0. For purposes of speeding up the process the correct answer is D. I will show how to check for it now.

The equation: $y = (x + 1)(x+3)$

Now plug in 0 for x.

$y = (0 + 1)(0+3)\\$

Now solve.

y = (1)(3)

y = 3

This proves that this is the correct answer.

For part B) we just have to plug in the give values for x separately and check for each value of x that it equals 0. For the purpose of speeding up the process the correct answer is C. I will show how to check for it now.

The equation: $3x(x-3) = 0$

Now plug in x for 0 and solve:

$3* 0 (0-3) = 0\\$

$0(-3) = 0\\$

$0 =0\\$

This equation is true, now we check for the other value of x, 3.

$3*3(3-3) = 0\\$

$9(0) = 0\\$

$0 =0\\$

This is also true so that means this is the correct answer.

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2 years ago