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3 years ago

Solve for x. C=x+a/b

Mathematics

1 answer:

marshall27 [118]3 years ago

3 0

Since you are solving for x, you need to isolate x on one side of the equation. Start by subtracting C from both sides.

0 = x + a / b - C

Subtract x from both sides to have it on the left side of the equation.

-x = a / b - C

Make x a positive number by dividing both sides by negative one.

x = - a / b + C

A better way of writing this answer would be: $x=-\frac{a}{b} + C$ .

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Y = 5x - 22 y = 4x - 17

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The answer is (5,3). You need to equal both sides out. So 5x-22=4x-17. That will give you x=5. After that you substitute 5 for x in one or both of the equations and get that y=3. Hope this helps!

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There is a proportional relationship between the number of months a person has had a streaming movie subscription and the total

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An article presents a study of the failure pressures of roof panels. A sample of 15 panels constructed with 8-inch nail spacing

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Answer:

There is sufficient evidence to conclude that six inches spacing has a higher mean failure pressure than 8 inches

Reject $H_0\ at\ 5%$ level of significance

Step-by-step explanation:

From the question we are told that:

Sample size 1 $n_1=15$

Spacing 1 $s_1=8$

Mean 1 $\=x_1=8.48$

Standard deviation 1 $\sigma_1=0.96 kPa$

Sample size 2 $n_2=16$

Spacing 2 $s_2=6$

Mean 1 $\=x_1=9.93$

Standard deviation 1 $\sigma_1=1.02 kPa$

Generally the hypothesis is mathematically given as

Null $H_0:\mu_1-\mu_2$

Alternative $H_a:\mu_1\mu_2$

Generally the equation for pooled estimate is mathematically given by

$S=\sqrt{\frac{(n_1-1)\sigma_1^2+(n_2-1)\sigma_2^2}{n_1+n_2-2} }$

Therefore

$S=\sqrt{\frac{(15-1)0.96^2+(16-1)1.02^2}{15+15-2} }$

$S=0.9905$

Generally the equation for test statistics is mathematically given by

$t=\frac{\=x_1+\=x_2}{S\sqrt{\frac{1}{n _1}+\frac{1}{n_2}}}$

$t=\frac{\=8.48-9.93}{0.9905\sqrt{\frac{1}{15}+\frac{1}{15}}}$

$t=-4.00091$

Therefore From table

$P value=P(t_{15+15-2}=4.00091)$

$P value=0.00041918$

$P$

Therefore

There is sufficient evidence to conclude that six inches spacing has a higher mean failure pressure than 8 inches

Reject $H_0\ at\ 5%$ level of significance

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3 years ago

When a new charter school opened in 1992, there were 440 students enrolled. Write a formula for the function N(t), representing

dsp73

Answer:

N(t) = m(X)+c

Step-by-step explanation:

Here, M is slope, also known as gradient, while X is the number which is variable and can keep on changing according to the number of increase, decrease or any other modification to the number of children in the school.

An finally, C is the constant which remains the same whatever the variable is. Therefore C would be equal to 440.

I hope this helps you.

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3 years ago

Find the constant $c$ that makes the quadratic $x^2 + 7x + c$ the square of a binomial.

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$a=1\\
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