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3 years ago

What is the equation for proportions? What does each letter represent?

Mathematics

1 answer:

marysya [2.9K]3 years ago

3 0

Answer:

Ratios and Proportions - Proportions - In Depth. A proportion is simply a statement that two ratios are equal. It can be written in two ways: as two equal fractions a/b = c/d; or using a colon, a:b = c:d. The following proportion is read as "twenty is to twenty-five as four is to five."

Step-by-step explanation:

look at the attachment.

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Jannette can repair a refrigerator in 60 minutes. Liza can repair a refrigerator 20 minutes faster. If they work together, how m

Rama09 [41]

24 minutes. Assuming that 2 people who will repair a refrigerator equally fast will do it twice as fast when working together:
Jannete repairs 1/60 refrigerator per minute.
Lisa repairs 1/40 refrigerator per minute.
Togheter they repair 1/60+1/40= 1/60 + 1,5/60 = 2,5/60=5/120=1/24 refrigerator per minute
thus it will take them 24 minutes

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3 years ago

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CORRECT ANSWER GETS A BRAINLIEST

Alex787 [66]

Answer:

B. N(c) = (c-20)/n

Step-by-step explanation:

Given

C(n) = 10n+20

we have to find the inverse of this function

we have to express n in terms of C(n)

C(n) = 10n+20

we have make n independent of n and remove any other term containing on the side of n

subtracting 20 from LHS and RHS

C(n) - 20 = 10n+20 - 20

C(n) - 20 = 10n

dividing LHS and RHS by 10

C(n)/10 - 20/10 = 10n/10

=> n = (C(n) - 20)/10

Now given in problem, N(c) is no of bushels picked

and c is the cost of apple

so in function n = C(n) - 20/10

we replace C(n) with c

and n with N(c)

and then we have

N(c) = (c-20)/n Answer

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3 years ago

The vertex of this parabola is at (-2, 5). Which of the following could be it’s equation? A. Y=3(x+2)^2-5 B. Y=3(x-2)^2-5 C. Y=3

Mariulka [41]

Answer: C. $y=3(x+2)^{2} +5$

Step-by-step explanation:

1. You have the following equation of the parabola in Vertex form:

$y=a(x-h)^{2}+k$

Where h is the x-coordinate of the vextex and k is the y-coordinate of the vextex.

2. You know that the vertex of this parabola is at (-2, 5), then, susbtitute this point into the equation. Then, you obtain:

$y=3(x+2)^{2}+5$

3. Therefore, the answer is the option C.

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<img src="https://tex.z-dn.net/?f=.3x%5E2%2Bx%3D.1x" id="TexFormula1" title=".3x^2+x=.1x" alt=".3x^2+x=.1x" align="absmiddle" cl

ra1l [238]

Answer: i think the answer is 0, -3

Step-by-step explanation:

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3 years ago

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What are the intercepts if the graphed functions

KonstantinChe [14]

The intercepts represent the points where the graph touches the axis the given. With that said, your y intercept is (0, -3) and the x intercept is (-1,0).

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3 years ago

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