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kykrilka [37]
3 years ago
9

What can you multiply by 3 and add 2 to get -19?

Mathematics
1 answer:
katrin2010 [14]3 years ago
4 0

Answer:

let \: the \: unknown \:  = x \\ then \: x \times 3 + 2 =  - 19 \\ 3x + 2 =  - 19 \\ 3x =  - 19 -  2 \\ 3x =  - 21 \\ x =  - 21 \div 3 =  - 7 \\ x =  - 7 \\ thank \: you

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1/8 + c = 4/5 <br><br>what is c
ASHA 777 [7]

Answer:

27/40

Step-by-step explanation:

7 0
3 years ago
the height of the snow was 84 inches in the beginning of the week. it melts at a rate of 0.15 inches per hour. how many hours wo
lakkis [162]

Answer:

It takes 147 hours for the snow to reach 62 inches.

Step-by-step explanation:

Given:

Height of the snow at the beginning  = 84 inches

Rate at which the snow melts = f 0.15 inches per hour

To Find:

The time taken for the  snow to reach 62 inches = ?

Solution:

Let the time taken to reach 62 inches be x

Then according to the question,

Total height of the snow - (rate of melting)(x) = 62 inches

On substituting the values,

84 - (0.15)(x) = 62

84 - 0.15x = 62

- 0.15x = 62 - 84

- 0.15x = -22

0.15x = 22

x = \frac{22}{0.15}

x= 146.6

x = 147

7 0
3 years ago
16.
777dan777 [17]

Answer:

21,800 milliliters

Step-by-step explanation:

Here's a trick.

King Henry Died By Drinking Chocolate Milk.

King = Kilo, Henry = Hecto, Died = Deka, By = Base (liters, grams, meters), Drinking = Deci, Chocolate = Centi, Milk = Milli.

This helps to remember the order so you can move the decimal over the proper amount of times.

If you are starting at the base, and need to move to milli, you will move the decimal place 3 places to the right.

So for 21.8 liters = 21,800 milliliters

6 0
3 years ago
Lisa and her daughter weigh 185 pounds all together. The ratio of lisa’s weight to her daughter weight is 4:1 . How much does li
frez [133]

Since the ratio of mother to daughter is 4:1, the weight of the mother and daughter together is five times the weight of the daughter.

In fact, if the daughter weights d pound, the mother weights 4d pounds, and the total weight is d+4d = 5d.

We know that this total is 185 pounds, so we have

5d = 185 \iff d = \dfrac{185}{5} = 37

So, the daughter weights 37 pounds.

5 0
3 years ago
when using substitution to solve a system of education, how can you tell when a system has no solution
OLEGan [10]

Answer:

Recognize systems of equations that have no solution or an infinite number of solutions



4 0
3 years ago
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