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3 years ago

Four out of 5 dentists recommend Sparkle toothpaste. What percent of dentists recommend sparkle toothpaste?

2 answers:

5 0

80% all you have to do is divide 4 by 5 (4/5)
you could also think of it like a five question quiz. every question you get wrong it subtracts 20 percent since 20 times 5 is 100 (3/5=.60 or 60%)

Whitepunk [10]3 years ago

4 0

Well, the fraction would be 80/100th's but if you wanted it simplified it would be 4/5th's. Hope I helped. :)

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Which of the following equations is equivalent to 4[x + 2(3x – 7)] = 22x – 65?

pickupchik [31]

Answer:

X= -3/2

Step-by-step explanation:

6x/6=-9/6

6 0

3 years ago

Valerie bought a coat at a winter half-price sale. A sales tax of $6.24 was added to the sale price, bringing the cost of the co

egoroff_w [7]

Answer:

84.24 - 6.24 = p

Step-by-step explanation:

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2 years ago

A container manufacturer plans to make rectangular boxes whose bottom and top measure 2x by 3x. The container must contain 12in.

lisabon 2012 [21]

The height of the container be so as to minimize cost will be 1.20. inches.

<h3>How to calculate the height?</h3>

The volume of the box will be:

= 2x × 3x × h

= 6x²h

Volume = 6x²h

12 = 6x²h

h = 2x²

The cost function will be:

C = 2.60(2)(6x²) + 4.30(12x)h

C = 31.2x² + 51.6xh

Taking the derivative

62.4x + 51.6h

h = 1.20

Therefore, the height of the container be so as to minimize cost will be 1.20 inches.

Learn more about height on:

brainly.com/question/15557718

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5 0

1 year ago

There were 214 students that voted for jaminson to be the student council for president . This is one third of the number of stu

Andreyy89

I think its 642 students

8 0

3 years ago

Read 2 more answers

Hey! I have some geometry questions today!

Volgvan

Answer:

Step-by-step explanation:

<h3>Question 1</h3>

It is assumed the chords have equal length: PQ = SR

If the vertexes connected with the center, the both chords will form a right triangle, with the hypotenuse being the radius.

<u>Then the radius is found using Pythagorean theorem:</u>

r = $\sqrt{20^2 + 21^2}$ = $\sqrt{841}$ = 29

<h3>Question 2</h3>

<u>Use the intersecting secants theorem: and solve for x:</u>

FS*FT = FP*FQ
4(4 + x) = 5(5 + 3)
16 + 4x = 40
4x = 24
x = 6

8 0

2 years ago