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2 years ago

WILL GIVE BRAINIEST 100 PIONTS

Mathematics

2 answers:

Stels [109]2 years ago

7 0

Answer:

a and e are correct

Step-by-step explanation:

ehidna [41]2 years ago

3 0

Answer:

a and e are correct answers

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The function, f(x)=70n-400, models the profit of the instructor of a guitar class per month, where n is the number of students e

zimovet [89]

profit=f(x)

so solve for f(x)=1000

1000=70n-400

add 400 to both sides

1400=70n

divide both sides by 70

20=n

20 students need to be enrolled to make a profit of 1000.00

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2 years ago

Better picture!! Please help me ASAP!! Desperate

Crazy boy [7]

The length of the picture would be 10 inches. If the frame needs to be 34, that means 7+7 for the width and 10+10 for the length.

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2 years ago

Find all values of c in the open interval (a, b) such that f'(c)=(f(b)-f(a))/(b-a)

timama [110]

<h3>Answer: c = 7/4</h3>

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Work Shown:

Compute the function value at the endpoints

$f(x) = \sqrt{4-x}\\\\f(-5) = \sqrt{4-(-5)} = 3\\\\f(4) = \sqrt{4-4} = 0\\\\$

With a = -5 and b = 4, we have

$f'(c) = \frac{f(b)-f(a)}{b-a}\\\\f'(c) = \frac{f(4)-f(-5)}{4-(-5)}\\\\f'(c) = \frac{0-3}{9}\\\\f'(c) = -\frac{1}{3}\\\\$

So,

$f(x) = \sqrt{4-x}\\\\f'(x) = -\frac{1}{2\sqrt{4-x}}\\\\f'(c) = -\frac{1}{3}\\\\-\frac{1}{2\sqrt{4-c}} = -\frac{1}{3}\\\\$

Use algebra to solve for c

$-\frac{1}{2\sqrt{4-c}} = -\frac{1}{3}\\\\\frac{1}{2\sqrt{4-c}} = \frac{1}{3}\\\\3 = 2\sqrt{4-c}\\\\2\sqrt{4-c} = 3\\\\\sqrt{4-c} = \frac{3}{2}\\\\4-c = \frac{9}{4}\\\\c = 4-\frac{9}{4}\\\\c = \frac{16-9}{4}\\\\c = \frac{7}{4}\\\\$

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2 years ago

Since Lia was 10, her mother said that she can help out with the chores by washing her age in dishes, everynight after dinner. H

Marrrta [24]

Lia does 70 dishes in 1 week because there are 7 day in a week so you multiply 7 x 10 which equals 70

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2 years ago

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What are the roots of the equation? x^2(5x−7)(3x+2)=0

lisov135 [29]

x = 0, x = $\frac{7}{5}$ , x = - $\frac{2}{3}$

since we have a product of factors equal to zero, equate each factor to zero and solve for x

x² = 0 ⇒ x = 0 ( multiplicity 2 )

5x - 7 = 0 ⇒ x = $\frac{7}{5}$

3x + 2 = 0 ⇒ x = - $\frac{2}{3}$

7 0

2 years ago

Read 2 more answers