3 years ago

Pls answer me ill give points and brainlest

Mathematics

1 answer:

Elodia [21]3 years ago

7 0

Answer:

Sorry is there any more information i will then change answer

Step-by-step explanation:

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Justify each step.<br> 15. 2x – 5 = –20<br> 2x = -15<br> x=_15

Dimas [21]

1st: add 5 to each side
2nd: divide by 2 on each side

5 0

3 years ago

Suppose Johnny invests $41,745 into an account, which has been earning interest for many years and he now has a total of $39,974

Dmitriy789 [7]

Answer:

A negative number would be reasonable in the solution of the rate of the investment. It would be reasonable because Johnny started out with $41,745 in his account and ended up with $39,974 which means that the rate has to be negative.

please rate and thank : )

7 0

2 years ago

one days discharge at its mouth, 3 trillion gallons, could supply all of country A’s household for 5 months. how much water an a

serious [3.7K]

let's use engineering notation for the sake of brevity.

1 trillion is 1,000,000,000,000, or just 1E12, twelve zeros.

1 million is then 1E6, six zeros.

we know the discharge for one day is 3E12 gallons, and that'd do just fine for country A for 5 months. How many gallons in 1 month only?

$\bf \begin{array}{ccll} gallons&months\\ \cline{1-2} 3E12&5\\ x&1 \end{array}\implies \cfrac{3E12}{x}=\cfrac{5}{1}\implies 3E12=5x \\\\\\ \cfrac{3E12}{5}=x\implies 6E11=x\implies 600000000000=x$

if there are 200million inhabitants in A, namely 200E6 or 2E8 inhabitants, how many gallons per inhabitant from all those 6E11 gallons?

$\bf \begin{array}{ccll} gallons&households\\ \cline{1-2} 6E11&2E8\\ x&1 \end{array}\implies \cfrac{6E11}{x}=\cfrac{2E8}{1}\implies 6E11=2E8x \\\\\\ \cfrac{6E11}{2E8}=x\implies \cfrac{600000000000}{200000000}=x\implies 3000=x$

5 0

3 years ago

Help Please 20 points and Brainliest if the answer is Correct!!!!! ( Do not put a random answer or I will report)

Firdavs [7]

Answer:

k^2/25

Step-by-step explanation:

(1/5k)^2

(k/5)^2

k^2/5^2

k^2/25

6 0

2 years ago

Read 2 more answers

Help please!!!!! Will give brainliest!!!!

Harlamova29_29 [7]

Answer:

someone has type A blood 40%

Step-by-step explanation:

The probability that a certain person has the A-type blood is 40%, or 0.4

8 0

3 years ago

Pls answer me ill give points and brainlest​

Pls answer me ill give points and brainlest