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DiKsa [7]
3 years ago
9

PLSSS HELP IF YOU TURLY KNOW THISS

Mathematics
2 answers:
Helen [10]3 years ago
6 0

Step-by-step explanation:

(8.7 + x) \div 1.1 = 7 \\ 8.7 + x=7.7 \\ x=7.7 - 8.7 \\ x =  - 1

vichka [17]3 years ago
4 0

Answer:

\frac{8.7 + x}{1.1}  = 7 \\8.7+x=7\times 1.1\\ 8.7 + x = 7.7 \\ x = 7.7 - 8.7 \\ \boxed{ x =  - 1}

  • <u>x = -1</u> is the right answer.
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True or false pls no guessing
marshall27 [118]

Answer:

True

Step-by-step explanation:

5 X 5 X 5 = 125 because 5 X 5 would be 25. And 25 X 5 would be 125.

6 0
2 years ago
Read 2 more answers
A ball of radius 11 has a round hole of radius 5
inn [45]

Answer:

3,847.40376

Step-by-step explanation:

Volume of a sphere=

4/3π(11)³=5,575.27976

Volume of a cylinder=

π(5)²(22)=1,727.876

Total volume=

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3 0
4 years ago
What is the answer to -3(x+6)=​
Amanda [17]
-3x - 18 = 0
-3x = 18
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7 0
3 years ago
A man invests $2000 in an account that pays 6.5% interest per year, compounded quarterly.
skelet666 [1.2K]

Answer:

The correct answer is a. $2275.28; b. 17.04 years

Step-by-step explanation:

Principal to be invested is $2000

Interest rate (r) per year is 6.5 quarterly.

Interest is calculated compoundly.

a. Time (t) for the investment is given to be 2 years.

Amount after two years is = Principal × ( 1+ \frac{r}{100n}) ^ {nt} where the value of n is 4.

⇒ A = 2000  × ( 1+ \frac{6.5}{400}) ^ {8}

⇒ A = $2275.28.

b. Now the value of A is given to be triple the principal = $ (3 × 2000).

Therefore we need to find the value of t.

⇒ 3 × 2000 =  2000  × ( 1+ \frac{6.5}{400}) ^ {4t}

⇒ ㏑ 3 = 4t × ㏑ ( 1.01625)

⇒ t = 17.04

Therefore it would take 17.04 years for the principal to triple.

5 0
3 years ago
You deposit $4000 in an account earning 4% interest compounded monthly. How much will you
Butoxors [25]
$6400 is the amount you will have in 15 years
8 0
3 years ago
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