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Ivan
3 years ago
13

What is an expression equivalent to 7(c-4)

Mathematics
1 answer:
Lemur [1.5K]3 years ago
7 0

Answer:

7c - 28

Step-by-step explanation:

7(c - 4)

(7 × c) + (7 × - 4)

7c + (7 × - 4)

7c + -28

7c - 28

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A box of blueberries is 2/5 full. Janet and her friends had each eaten 1/10 of a box of blueberries. How many people are blueber
anyanavicka [17]

In this problem, we have to find the factor which will make (1 / 10) equal to (2 / 5). Therefore we can write it as:

x (1 / 10) = 2 / 5

where x is the number of people who ate the blueberries

x = (2 / 5) / (1 / 10)

x = 4

 

<span>Therefore 4 people ate the blueberries.</span>

7 0
3 years ago
Read 2 more answers
Hamilton is saving for retirement. He deposits $275 each month at 2.6% annual interest for 30 years. According to his calculatio
Lerok [7]

After saving for 30 years, Hamilton would have contributed $99,000 and made a total interest of $50,722.57.

Hamilton will indeed have $149,722.57 at the end of 30 years.

Out of this, the amount he would have contributed is:

<em>= Amount contributed per month x Number of months contributed </em>

= 275 x 30 years x 12 months

= $99,000

The amount that would be interest is:

<em>= Total amount accumulated - Amount contributed </em>

= 149,722.57 - 99,000

= $50,722.57

In conclusion, Hamilton would have contributed $99,000 and made $50,722.57 in interest.

<em>Find out more at brainly.com/question/11741992. </em>

3 0
3 years ago
16) The revenue (in thousands of dollars) from producing x units of an item is modeled by
lyudmila [28]

Answer:

Part 16) The marginal revenue is $4,000

Part 17) The marginal average cost function is (70x+41)

Step-by-step explanation:

Part 16) we know that

The marginal revenue function is simply the derivative of the revenue function

we have

R(x)=5x-0.0005x^{2}

Find  \frac{dR(x)}{dx}

R'(x)=5-0.001x

For x=1,000 units

substitute

R'(x)=5-0.001(1,000)

R'(x)=5-1=\$4

Remember that the units is in thousands of dollars

therefore

The marginal revenue is $4,000

Part 17) we know that

The marginal average cost function is simply the derivative of the average cost function

we have

C(x)=(5x+3)(7x+4)

Applying the distributive property

C(x)=35x^2+20x+21x+12

C(x)=35x^2+41x+12

Find the derivative

C'(x)=70x+41

therefore

The marginal average cost function is (70x+41)

6 0
3 years ago
Find the unknown angles
lana [24]

Answer:

angle COD is 35

angle BOE is 125

angle AOB is 130

Step-by-step explanation:

Sorry too late

7 0
3 years ago
4(2v-6)-12v<br> Topic Name<br> Using distribution and combining like terms to simplify: Univariate
iragen [17]

Answer:

-24+4v

Step-by-step explanation:

8v-24-12v

-24+4v

3 0
3 years ago
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