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guapka [62]
3 years ago
8

an empty container has a mass of 120 grams. 50 ml of sugar solution is added and the total mass rises to 190g. what is the densi

ty of the sugar solution
Mathematics
1 answer:
uranmaximum [27]3 years ago
7 0
The mass of the solution is 190 g - 120 g = 70 g.  Thus, it's density is 70 g / 50 mL = 1.4 g/mL.
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A population of insects increases at a rate of 1.5% per day. About how long will it take the population to double?
never [62]

The <em><u>correct answer</u></em> is:

46.6 days

Explanation:

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We do not know the initial amount, the total amount, or the amount of time.  We do know that r, the percent of growth, is 1.5%; 1.5% = 1.5/100 = 0.015:

A=p(1+0.015)^t

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Using logarithms to solve this,

\log_{1.015}(2)=t&#10;\\&#10;\\46.6=t

8 0
3 years ago
Read 2 more answers
Convert to a percent.<br><br> A. <br> 53%<br> B. <br> 35%<br> C. <br> 60%<br> D. <br> 30%
adelina 88 [10]

3/5 converted to percentage gives 60%

How do we convert a fraction to a percentage?

First and foremost, the maximum percentage value any number could have is 100% , hence, in order to convert a number or fraction or even  a decimal to percentage, we simply multiply it by 100

3/5 to percent:

In order to convert 3/5 to percentage, we would multiply by 100

3/5=3/5*100

3/5 in percent=300/5

3/5 in percent=60

3/5 in percent =60%

As a result, the correct option is 60%,which is the third option, option C

Find out more about percentage on:brainly.com/question/18488471

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Full question:

Convert 3/5 to a percent.

A.30%

b.35%

c.53%

d.60%

7 0
1 year ago
Roman solved the equation 5a+2b=10 for a. His steps are shown below. 1. Subtract 2b: 5a+2b-2b=10-2b 2. Multiply by 5: 5a+10-2b W
VladimirAG [237]

Answer:

In step 2, he needed to divide both sides of the equation by 5

Step-by-step explanation:

we have

5a+2b=10

Solve for a------> That means isolate the variable "a"

step 1

Subtract 2b to both sides

5a+2b-2b=10-2b

5a=10-2b

step 2

Divide by 5 both sides

5a/5=(10-2b)/5

a=(10-2b)/5

3 0
2 years ago
Read 2 more answers
at tge local bookstore jim bought 2 paperback books for 13.00. Maria bought 5 paperback books for 45.00.​
11Alexandr11 [23.1K]
Jim = $13
Maria = $45
6 0
2 years ago
Solve the inequality -24&lt;×-3-8×
Vesna [10]
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-21/-7 <x
3 <x
x>3

The answer is  D.×>3
7 0
3 years ago
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