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2 years ago

Christine drove 260 miles using 12 gallons of gas. At this rate, how many gallons of gas would she need to drive 286 miles?

Mathematics

2 answers:

irinina [24]2 years ago

7 0

Answer:

13.2 gallons

Step-by-step explanation:

286/260 *12 = 13.2

Hatshy [7]2 years ago

6 0

Answer:

about 13.2 gallons

Step-by-step explanation:

Easy way to calculate.

12 gallons divided by 260 miles

Take that answer and multiply it by 286.

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The angle measurements in the diagram are represented by the following expressions.

Aleonysh [2.5K]

Answer:

x = 6

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Step-by-step explanation:

∠A = ∠B through alternate interior angles

∠A = ∠B

8x + 78 = 2x + 114

8x - 2x = 114 - 78

6x = 36

x = 36 ÷ 6

x = 6

∠B = 2x + 114

2(6) + 114

12 + 114

= 126

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2 years ago

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Can anyone help me with this question please:

ladessa [460]

The problem is asking us to isolate B. The given equation is solved for P, and we need to rearrange it for B.

First we need to square both sides. This will cancel out the square root on the right side.

P^2 = E + A^2/B^2

Next, subtract E from both sides.

P^2 - E = A^2/B^2

Next we need to get the B^2 out of the denominator. Multiply both sides by B^2.

B^2(P^2 - E) = A^2

Next divide both sides by (P^2 - E).

B^2 = A^2/(P^2 - E)

Lastly, take the square root of both sides.

B = sqrt(A^2/(P^2 - E))

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2 years ago

Practice solving quadratic equations.

Dennis_Churaev [7]

In order for the equation to be true, one of the factors on the left has to equal zero

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2 years ago

Can you conclude with a high degree of confidence that the population means for Iowa and New Jersey students are different? A.

Katen [24]

Complete Question

The complete question is shown on the first uploaded image

Answer:

Option A is correct

Step-by-step explanation:

From the question we are told that

The 95% confidence interval of the mean score of all New Jersey third graders is (58.957 , 63.043)

The sample size is n = 184

The sample average is $\mu = 65 \ points$

The standard deviation is $\sigma = 13 \ points$

The 90% confidence interval for the difference in mean score between lowa and New Jersey is (-6.33 , -1.67 )

The p-value is $p-value = 0.0048$

Generally given that the p-values is very low compared to the level of significance (100 -90 = 10% = 0.10 ) we can reject the null hypothesis which is usually a claim that the means of the population are the same )

Hence the population means are different .

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2 years ago

a box contains 20 yellow cubes and 8 grey cubes and 16 gold cubes what is ratio of yellow to grey to gold in its simplest form

prisoha [69]

Answer:

5:2:4

Step-by-step explanation:

20:8:16

= 5:2:4

Hope this helps =)

3 0

1 year ago