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3 years ago

8

Latex paint sells for $27 per gallon and will cost you $270 to paint your room. If each gallon will cover 350 square feet, how m

any square feet of wall space do you have in your room?

1 answer:

marysya [2.9K]3 years ago

7 0

Answer:

3500

Step-by-step explanation:

(270/27)× 350= 10 x 350

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What is the value of -5.872 + (-5.1) ÷ 1.5?

Blizzard [7]

<em><u>-9.272 is the right answer.</u></em> First you had to apply by the fraction rule. And it gave us, $-5.872-\frac{5.1}{1.5}$ . Then you divide by the number, and it gave us, $\frac{5.1}{1.5}=3.4$ , or $=-5.872-3.4$ . Finally subtract by the numbers, and it gave us the answer is $-5.872-3.4=-9.272$ , or -9.272 is the right answer. Hope this helps! And thank you for posting your question at here on brainly, and have a great day. -Charlie

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3 years ago

What is the slope of the line given by the equation y = -5x? Enter your answer as an integer or fraction in lowest terms.

posledela

Y=mx+b
m= slope
so -5 is the slope of the given line

5 0

3 years ago

Raven has a bag of 33 red and black marbles. The number of red marbles is 6 more than double the number of black marbles.

anzhelika [568]

Answer:

-The equation r+b-33 represents the total number of marbles

-There 9 black marbles

-There are 24 red marbles

Step-by-step explanation:

The bag contains 33 red and black marbles. Let the number of black marbles be b and that of red marble to r

Total number of marbles will be

b+r = 33 i.e b+r-33 = 0... (1)

If the number of red marbles is 6 more than double the number of black marbles, this can be represented as;

r = 6+ 2b... (2)

Substituting 2 in eqn 1 we have;

b + 6+2b = 33

3b = 27

b = 9

r = 33-9

r = 24

This shows that there are 9 black marbles, 24 red marbles and the equation r+b-33 represents the total number of marbles in the bag.

8 0

3 years ago

Read 2 more answers

An analytical laboratory is asked to evaluate the claim that the concentration of the active ingredient in a specimen is 86%. Th

Olenka [21]

Answer:

Decision rule

Reject null hypothesis

Conclusion

There is significance evidence that the true mean is different from 0.86

Step-by-step explanation:

From the question we are told that

The population mean $\mu = 0.86$

The sample is mean is $\= x = 0.8708$

The standard deviation is $\sigma = 0.0068$

The level of significance is $\alpha = 0.01$

The sample size n = 3

The null hypothesis is $\mu = 0.86$

The alternative hypothesis is $\mu \ne 0.86$

Generally the test statistics is mathematically represented as

$z = \frac{\= x - \mu }{ \frac{\sigma}{\sqrt{n} } }$

=> $z = \frac{ 0.8708 - 0.86 }{ \frac{0.0068}{\sqrt{3} } }$

=> $z = 2.751$

Generally p- value is mathematically represented as

$p-value = 2 P(z >2.751 )$

From the z-table

$P(z >2.751 ) = 0.0029707$

So

$p-value = 2 * 0.0029707$

=> $p-value = 0.00594$

From the obtained question we see that $p-value < \alpha$

Hence we reject the null hypothesis

6 0

3 years ago

The cylindrical part grain silo is 10 meters tall and has a radius of 5 meters.

Ratling [72]

Answer:

Volume of cylinder = 250πm³

Step-by-step explanation:

Given:

Height h = 10 m

Radius r = 5 m

Find:

Volume

Computation:

Volume of cylinder = πr²h

Volume of cylinder = π(5)²(10)

Volume of cylinder = 250πm³

5 0

3 years ago