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Andru [333]
3 years ago
9

31*20 hey can u help me solve this problem for me.

align="absmiddle" class="latex-formula">
​

Mathematics
1 answer:
timurjin [86]3 years ago
6 0
31×20. it equals 620.

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Explain how the expression 19√2+2√8 can be simplified using the distributive property.
Ilya [14]

Answer:

23√2

Step-by-step explanation:

1. Simplify √8 to 2√2

19√2 +2* 2√2

2. Simplify 2*2√2 to 4√2

19√2 + 4√2

3. Simplify

23√2

3 0
3 years ago
Find the approximate side length of a square game board with an area of 105 in2.
aleksley [76]

Answer:

Rounded to the nearest inch: 10

Rounded to the nearest tenth: 10.2

Rounded to the nearest hundredth: 10.25

Step-by-step explanation:

To find the area of a square, we multiply the side length by itself, or in other words, SQUARE the side length!

A=s^2

We are given the area, so plugging that into our equation looks like this:

105=s^2

To eliminate the exponent, take the square root of both sides of the equation!

\sqrt{105}=s

From here, there are a few paths to take, depending on what your teacher is looking for. I will evaluate the approximate of the square root by finding the nearest perfect squares.

The nearest perfect square less than √105 is √100, and the nearest perfect square greater than √105 is √121.

105 is closer to 100 than to 121, so √105 is closer to √100.

√100 is equal to 10, so the √105 is approximately 10 inches!

Using a calculator to check:

\sqrt{105}=10.247 inches

8 0
1 year ago
If an earthquake measures 10^4, what does it measure on the Richter scale?
devlian [24]
I think the answer is 4, the earthquake is a 4 in the scale.
6 0
3 years ago
Assume ABC Company deposits $90,000 with First National Bank in an account earning interest at 6% per annum, compounded and semi
Brilliant_brown [7]

Answer: A) $120,953

Step-by-step explanation:

The formula to calculate the compound amount (semi-annually):-

A=P(1+\dfrac{r}{2})^{2n}, where P is principal amount , r is rate of interest and n is the number of time periods.

Given : Principal amount : P= $90,000

Rate of interest : 6% per annum = 0.06 per annum

Time period : n= 5 years

A=(90000)(1+\dfrac{0.06}{2})^{2\times5}=120952.474141\approx 120,953

Hence, the ABC will have $ 120,953 in the account after five years if interest is reinvested.

5 0
3 years ago
A regular pentagon has side lengths of 10 cm and an
Fittoniya [83]

Answer: 172 square centimeters.

Step-by-step explanation:

Hi, to answer this question we have to apply the next formula:

Area of a pentagon (A) = 1/2× 5s × a

Where:

s : side of the pentagon

a: apothem

Replacing with the values given and solving for A (area):

A =1/2 x (5 x10) x 6.88

A = 172 square centimeters.

Feel free to ask for more if needed or if you did not understand something.

7 0
3 years ago
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