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rewona [7]
3 years ago
15

PLSS HELP IF YOU TURLY KNOW THISS

Mathematics
2 answers:
dangina [55]3 years ago
6 0

Answer:

\frac{0.3x - 2.1}{3}  = 0.4  \\ 0.3x - 2.1 = 0.4 \times 3 \\ 0.3x - 2.1 = 0.12 \\ 0.3 x = 0.12 + 2.1 \\ 0.3x = 2.22 \\ x =  \frac{2.22}{0.3}  \\ x = 7.4

ollegr [7]3 years ago
5 0

Answer:

\frac{0.3x - 2.1}{3}  = 0.4 \\ 0.3x - 2.1 = 0.4 \times 3 \\ 0.3x - 2.1 = 1.2 \\ 0.3x = 1.2 + 2.1 \\ 0.3x = 3.3 \\ x =  \frac{3.3}{0.3}  \\  \boxed{x = 11}

  • <u>x = 11</u> is the right answer.
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SHOW WORK!!
denpristay [2]

If he puts 300 sunfish into the pond, he will put 225 perch in the pond.

<h3>What is a ratio?</h3>

A ratio is the comparison of one thing to another. Generally, ratios compares value.

They store the children pond keeping a ratio of 4 sunfish to 3 perch. Therefore, the ratio of sunfish to perch will be as follows

  • 4:3

If he 300 sunfish into the pond , the number of perch that will be in the pond can be calculated as follows:

  • 4 / 3 = 300 / x

cross multiply

4x = 900

x = 900 / 4

x = 225

learn more on ratios here: brainly.com/question/89456?referrer=searchResults

6 0
3 years ago
Factorise t^3+t^2+t+1​
Furkat [3]

Answer:

(t+1)(t^2+1)

Step-by-step explanation:

t^3+t^2+t+1​

(t+1)(t^2+1)

8 0
3 years ago
Please help me out please
Nutka1998 [239]

Answer:

14.7

Step-by-step explanation:

a^2+b^2=c^2

15^2+b^2=21^2

225+b^2=441

subtract 441-225=216

square root of 216 = 14.6969384567

= 14.7

4 0
3 years ago
Read 2 more answers
4. Tyrell scored an 80% on his math test. If there were 40 questions, how many did he get correct?​
Neko [114]

Answer:

32 Questions

Step-by-step explanation:

If you do 80% times 40, it equals 32.

7 0
3 years ago
Read 2 more answers
Write each fraction as a percent 2/7 roound desimal to nerest 100
ivolga24 [154]
20/7? I am guessing. Because that’s almost near the hundredth place
8 0
2 years ago
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