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kherson [118]
3 years ago
6

I need help againnnnn

Mathematics
1 answer:
JulijaS [17]3 years ago
6 0
Hope this helps again! :)

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What is the area of the shaded triangle?
Rzqust [24]

Answer:30

Step-by-step explanation: act like both of the triangles are there, that is a rectangle 6 times 10 equals 60. 60 divided by 2 is 30

6 0
3 years ago
The function C(x)=−20x+1681 represents the cost to produce x items. What is the least number of items that can be produced so th
Reptile [31]

Answer:

<em>The least number of items to produce is 41</em>

Step-by-step explanation:

<u>Average Cost</u>

Given C(x) as the cost function to produce x items. The average cost is:

\displaystyle \bar C(X)=\frac{C(x)}{x}

The cost function is:

C(x) = -20x+1681

And the average cost function is:

\displaystyle \bar C(X)=\frac{-20x+1681}{x}

We are required to find the least number of items that can be produced so the average cost is less or equal to $21.

We set the inequality:

\displaystyle \frac{-20x+1681}{x}\le 21

Multiplying by x:

-20x+1681 \le 21x

Note we multiplied by x and did not flip the inequality sign because its value cannot be negative.

Adding 20x:

1681 \le 21x+20x

1681 \le 41x

Swapping sides and changing the sign:

41x \ge 1681

Dividing by 41:

x\ge 41

The least number of items to produce is 41

8 0
3 years ago
Solve For d.<br> d+ 4 = 16.21<br> d=12.21
pshichka [43]

This comes from subtracting 4 from both sides.

4 0
1 year ago
A student measured her height to be 51 inches. What is the student's height in feet and inches?
Gemiola [76]

1 foot = 12 inches.

Divide total inches by 12:

51 / 12 = 4.25 feet.

The whole number is the number of feet. Now multiply the decimal portion by 12 to get inches:

0.25 x 12 = 3 inches

51 inches = 4 feet 3 inches

The student is 4 feet 3 inches tall

8 0
3 years ago
Read 2 more answers
If<br> DX/DT= 2cm/s <br> x=-1 <br> y=x^2+1<br> DY/DT=??
kobusy [5.1K]

Answer:

\frac{dy}{dt} = - 4 cm/s

Step-by-step explanation:

Let us revise the chain rule

If \frac{dy}{dt} = a and \frac{dx}{dt} = b, then

\frac{dy}{dx} = \frac{dy}{dt} ÷  \frac{dx}{dt} = \frac{a}{b}

∵ y = x² + 1

- Use the differentiation to find \frac{dy}{dx}

∴ \frac{dy}{dx} = 2x

∵ x = -1

- Substitute x by -1 in  \frac{dy}{dx}

∴  \frac{dy}{dx} = 2(-1)

∴  \frac{dy}{dx} = -2

∵  \frac{dy}{dt} =  \frac{dy}{dx} ×  \frac{dx}{dt}

∵ \frac{dx}{dt} = 2 cm/s

∴  \frac{dy}{dt} = (-2) × (2)

∴ \frac{dy}{dt} = - 4 cm/s

8 0
3 years ago
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