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3 years ago

4. (7x + 5) – (3x + 2) =

Mathematics

1 answer:

Pani-rosa [81]3 years ago

6 0

Collect like terms and calculate the sum
answer is: 4x+7

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What is the price of gas at the gas station in dollars per liter?

dimaraw [331]

Answer:

The price of gas at the gas station is $0.55 per liter.

8 0

2 years ago

Marley had $120 to buy books. She purchased 6 books and has $18 left. How much was each book?

Hatshy [7]

Answer:

$17

Step-by-step explanation:

If Marley had $120 to buy books and has a remainder of $18 left, then you would subtract 18 from 120 first.

120 - 18 = 102

Next you would divide.

102/6 = 17

The price of each book was $17.

3 0

2 years ago

The san paulo community swimming pool can be filled in 12 hr if water enters through a pipe alone or in 30 hr if water enters th

Nuetrik [128]

Alright, lets gets started.

If water enters through a pipe alone, swimming pool can be filled in 12 hr.

Or say, in 12 hrs, swimming pool can be filled with help of pipe.

It means in 1 hr, the part of swimming pool filled = $\frac{1}{12}$ (For pipe only)

Similarly, with hose only, , in 1 hr, the part of swimming pool filled = $\frac{1}{30}$

So, water is coming from both, pipe and hose , then in 1 hr, the part of pool filled will be = $\frac{1}{12} + \frac{1}{30}$

Suppose in x hrs, with both supplies, pipe and hose, pool is filled.

Means

$\frac{1}{12} + \frac{1}{30} = \frac{1}{x}$

making common denominator

$\frac{30}{360} + \frac{12}{360} = \frac{1}{x}$

$\frac{30 + 12}{360} = \frac{1}{x}$

$\frac{42}{360} = \frac{1}{x}$

Flipping

$\frac{360}{42} = x$

$x = \frac{60}{7}$

Means 8.57 hrs : Answer

Hope it will help :)

7 0

3 years ago

Use the inverse sine ratio when you know the length of a leg opposite the required angle. True or false

brilliants [131]

Answer:

False

Step-by-step explanation:

The function you use to find the angle will depend on the other information given. Regardless, finding the angle may involve the inverse sine function, not the inverse sine ratio.

_____

If you know the leg adjacent as well as the leg opposite, the inverse tangent function will be an appropriate choice.

5 0

3 years ago

2. Write the mixed number -5(4/9) as a fraction in three different ways. Thenwrite the mixed number as a decimal.

emmasim [6.3K]

Fraction #1

$-5\frac{4}{9}$

Fraction #2

$-\frac{49}{9}$

Fraction #3

$-4\frac{13}{9}$

Fraction #4

$-3\frac{22}{9}$

Decimal:

$-5\frac{4}{9}\approx5.4444$

Answer:

$-5\frac{4}{9}$

$-\frac{49}{9}$

$-4\frac{13}{9}$

Decimal: 5.4444

3 0

1 year ago