3x--19=11 please answer soon

Answers

Answer 1

Answer: When you subtract a negative it is same as just adding the number so 3x--19=3x+19
You now have 3x+19=11
Subtract both sides by 19 and you get 3x=-8
Divide by 3 and you get x=-8/3 which is -2 and 5/3 or -2.667

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The quotient of n and -0.5 is 13. What is the value of n? Question 2 options: -26 -6.5 6.5 26

Answers

Answer:

Step-by-step explanation:

Write an expression for the calculation double 5 and then multiply 3

Answers

Double 5 is 2×5
Multiply 3 is ×3

So we put them together to get the expression. Pay attention though, it says double 5 THEN multiply 3. The way we make sure that double 5 comes first is by surrounding it by parentheses. The final expression is...

(2×5) × 3

Juan deposited $200 in savings account earning 3% interest over 2 years . what was the total amount of interest earned at the end of 2 years ?

Answers

I'm not too sure about this one but if you find 3% of $200 you get 6 and if you multiply that by 2 ( for the 2 years ) you'll get ( A $12 )

Erin received the following scores on her last four spelling tests. 21/25, 82%, 0.8, 17/20

Which of these is Erin's highest score?

Answers

(21/25) * 100
84 %

82 %

0.8 * 100
80 %

(17/20) * 100
85 %

17/20 is the highest one

17/20
17 × 5 = 85%
.........................

75% of ? = 30 helppp

Answers

Answer: $40$

Divide

30÷75%=40

Final Answer

Note: When finding answers like these divide the number by the percent.

Answer:

So 75% of 40 = 30.

Step-by-step explanation:

Hello!

Let's represent this as an equation so its easier to understand and solve.

We can represent any number as "n," and 75% as $(75)/(100)$ .

$(75)/(100)$ · n = 30

Multiplying by 100 to get rid of the fraction:

75n = 3000

Dividing by 75:

n = 40.

So 75% of 40 = 30.

The number is $\boxed{40}$ .

Hope this helps!

A population numbers 508 organisms initially and increases by 6.2% each year.Suppose P represents population, and t the number of years of growth. Write an exponential model to represent this situation.

Answers

To find the population after t number of years, multiply the starting population by 1 plus the percent increase raised to the number of years.

The equation would be: P = 508(1.062)^t

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