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Westkost [7]
3 years ago
6

Estimate the grade received on a test when 8 questions are answered correctly out of 40

Mathematics
2 answers:
Aleonysh [2.5K]3 years ago
5 0

Answer:

The correct answer is B. 20%

Scilla [17]3 years ago
5 0

Answer:

B. 20%

Step-by-step explanation:

You can multiply the fraction to get 40/200, then simplify it to get 20/100 or 20%.

Hope this helps! Let me know!

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A ferry operator takes tourists to an island.
Oksanka [162]

The fare of $(20 - 2.5) = $17.5 will maximize the total fare.

<h3>What is Differentiation?</h3>

Differentiation means the rate of change of one quantity with respect to another. The speed is calculated as the rate of change of distance with respect to time.

Here, The operator for a round-trip fare of $20, carries an average of 500 people per day.

It is estimated that 20 fewer people will take the trip, for each $1 increase in fare.

for $x  increase in fare, 20x less people will take the trip and at that time the total fare F is given by  

f(x) =(20 + x)(500 - 20x)

f (x) = 10000 + 100x - 20x²

For f(x) to be maximum, the condition is dy/dx = 0

 100 - 40x = 0

⇒ x = 2.5  

Thus, the fare of $(20 - 2.5) = $17.5 will maximize the total fare.

Learn more about Differentiation from:

brainly.com/question/24062595

#SPJ1

3 0
1 year ago
Determine if the two triangles are congruent. If they are, state how you know.
KIM [24]

Answer:

Well i dont know what all the sides/angles are called but no they are not congruent.

Step-by-step explanation:

Congruent, means for the 2 objects, shapes, etc. to be exactly the same. If you look at the triangles, they are not the same shape of triangle.

7 0
3 years ago
Heather won 100 lollipops playing horseshoes at her school's game night. Later, she gave four to each of her friends. She only h
vova2212 [387]

Answer:

23 friends

Step-by-step explanation:

100 - 8= 92

92/4 = 23

HEATHER IS SO POPULAR!!

8 0
3 years ago
If <img src="https://tex.z-dn.net/?f=%5Cfrac%7Ba%7D%7B4%7D%20%3D%20%5Cfrac%7Bb%7D%7B7%7D" id="TexFormula1" title="\frac{a}{4} =
tamaranim1 [39]

Answer:

Step-by-step explanation:

\frac{a}{4}=\frac{b}{7}\\a=\frac{4b}{7} \\\frac{a-b}{b} =\frac{\frac{4b}{7}-b }{b} \\=\frac{4b-7b}{7b}\\ =\frac{-3b}{7b}\\ =\frac{-3}{7}

6 0
3 years ago
In the figure, what is the value of x?
masha68 [24]

Answer:

  90

Step-by-step explanation:

In the quadrilateral formed by two tangents and the associated radii, the central angle and the external angle are supplementary. Here, that means that x° is supplementary to itself, so must be 90°.

  x = 90

3 0
3 years ago
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