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2 years ago

If a store sells 300 flat screen TVs and 30% of high definition, how many high definition TVs were sold?

1 answer:

3 0

90 Tv’s are high def! 300/100 = 3 (this is what 1% equals because there’s 100% total) so if we know 1% is 3 tv’s and 30% are high def, then we find out how many tv’s 30% is. so if 3 is 1% then 30 x 1= 30 then 30x3 = 90!

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The number of classes you are taking this semester is a discrete variable

Zarrin [17]

Answer:

true

Step-by-step explanation:

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2 years ago

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Hareb is saving money to buy a game so far he saved 24$ which is two thirds of the total cost of the game does the game cost

Tamiku [17]

Answer:

$36

Step-by-step explanation:

24/2=12

12*3=36

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3 years ago

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Can someone show me how to factor this please?

Alex_Xolod [135]

Answer:

$\displaystyle \theta = \left\{\frac{7\pi}{6}, \, \frac{3\pi}{2}, \frac{11\pi}{6}\right\}$

Step-by-step explanation:

We want to solve the equation:

$2\sin ^2 \theta + 3\sin \theta + 1 = 0$

In the interval [0, 2π).

Notice that this is in quadratic form. Namely, by letting u = sin(θ), we acquire:

$\displaystyle 2u^2 + 3u + 1 = 0$

Factor:

$\displaystyle (2u+1)(u+1) = 0$

By the Zero Product Property:

$\displaystyle 2u + 1 = 0\text{ or } u + 1 = 0$

Solve for each case:

$\displaystyle u = -\frac{1}{2} \text{ or } u = -1$

Back-substitute:

$\displaystyle \sin \theta = -\frac{1}{2} \text{ or } \sin \theta =-1$

Use the Unit Circle. Hence, our three solutions in the interval [0, 2π) are:

$\displaystyle \theta = \left\{\frac{7\pi}{6}, \, \frac{3\pi}{2}, \frac{11\pi}{6}\right\}$

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3 years ago

Which of the following is equivalent to the expression (m+3)^4

Nikolay [14]

the problem isnt that hard. you need to do the distributive property or FOIL with (m+3) four different times. The answer would be

M^4 + 12M^3 +54M^2 +108M +81

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3 years ago

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What is 23% of 256? please help

Anastasy [175]

So first you need to turn the percent into a decimal. So 23% would be 0.23 because you divide 23 by 100 to turn it into a decimal. Now you multiply 0.32 and 256. So:

$0.23 *256=58.88$

So your answer would be 23% of 256 is 58.88. I hope this helps! =)

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3 years ago