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3 years ago

3^x = 27^a+b and a^2-b^2/(a-b)=5 What is x?

Mathematics

1 answer:

Colt1911 [192]3 years ago

4 0

Your answer should be 3x-x+2=4 hope this helps..

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Find the area of the composite shape

Alexxandr [17]

Answer:

$13.735$ $ft^{2}$

Step-by-step explanation:

Area of a circle.

$A=\pi r^{2}$

$r=d/2\\r=8/2\\r=4$

$A=\pi \times 4^{2}$

$A=16\pi$

$A \approx 50.2654824574$

Area of a square.

$A=s^{2}$

$A=8^{2}$

$A=64$

Subtract the area of the square with the area of the circle.

$64-50.2654824574$

$= 13.7345175426$

I hope it helps.

Brainliest much appreciated.

8 0

2 years ago

Find the 70th term of the arithmetic sequence -26, -19, -12

zaharov [31]

Answer:

457

Step-by-step explanation:

The general term of an arithmetic sequence is given by ...

an = a1 +d(n -1)

where a1 is the first term (-26), and d is the common difference (7).

The 70th term of your sequence can be found by putting the numbers into this formula:

a70 = -26 +7(70 -1) = -26 +483

a70 = 457

The 70th term of the sequence is 457.

6 0

2 years ago

Evaluate the equation. 3/5h = 18/35 A) h=6/7 B) h=7/8 C) h=9/10 D) h=98/105

rjkz [21]

Equations -

I like to find the decimal expression of the fractions, to make this easier.

$0.6h = 0.514285714285$

Divide each sides by 0.6

$h = 0.857142857142 \: or \: \frac{6}{7}$

Answer: 6/7

3 0

2 years ago

Read 2 more answers

What is the probability of getting. Either blue or green on a spinner that is 3/10 green and 1/5 blue

densk [106]

The probability is 1/2.

Hope this helps and please make mine the Brainliest answer!

4 0

3 years ago

Read 2 more answers

Theo can paint a fence three times as fast as his sister can. Working together, they can paint a fence in 9 hours. How many hour

Deffense [45]

Answer:

12 hours

Step-by-step explanation:

Let Theo's siste can paint a fence in x times

Given.

Theo can paint a fence three times as fast as his sister can. Working together, they can paint a fence in 9 hours.

$\frac{1}{x}+\frac{1}{3x} =\frac{1}{9}\\\frac{3+1}{3x} =\frac{1}{9} \\\frac{4}{3x}=\frac{1}{9}$

Apply cross multiplication

$x=\frac{9\times 4}{3}\\x=\frac{36}{3} \\x=12hours$

Theo’s sister to paint the fence in 12 hours.

8 0

3 years ago