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2 years ago

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Melissa buys 212 pounds of salmon and 114 pounds of swordfish. She pays a total of $31.25, and the swordfish costs $0.20 per pou

nd less than the salmon. What would be the combined cost of 1 pound of salmon and 1 pound of swordfish?

1 answer:

charle [14.2K]2 years ago

3 0

Answer: b

Step-by-step explanation:

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Ria can paint a room in 4 hours. Destiny can paint the same room in 6 hours. How long would it take Ria and Destiny to paint the

Lerok [7]

Time taken by Ria to paint a room = 4 hours

Time taken by Destiny to paint a room = 6 hours

If they work together, they complete 1 job. So,

$\frac{1x}{4}+\frac{1x}{6}=1$

The LCD of 4 and 6 is 12

$\frac{3x+2x}{12}=1$

$\frac{5x}{12}=1$

$5x=12$

$x=\frac{12}{5}$

Hence, both of them can paint the room in $\frac{12}{5}$ hours or 2.4 hours.

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Quadrilateral QRST is similar to quadrilateral EDGF. What's the scale factor from EDGF to QRST

mart [117]

Answer:

C. $\frac{6}{5}$

Step-by-step explanation:

The ratio of the corresponding sides of a polygon is said to be equal. The ratio gives us the scale factor.

Therefore, assuming that quadrilateral QRST was the original polygon that was scaled up to give a similar polygon, EDGF, the scale factor would be expressed as $\frac{42}{35}$

The scale factor = $\frac{42}{35} = \frac{6*7}{5*7} = \frac{6}{5}$

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2 years ago

Someone help! you have 44 text messages in your inbox. How many messages can your cell phone hold? (and inbox is 88% full)

marin [14]

We can set up a proportion.

88% = 0.88

44/0.88 = x/1

Cross multiply:

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Divide 0.88 to both sides:

x = 50

So your cell phone can hold 50 messages.

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After a series of calculations, I found out that the interest he has to pay in total would be <span>$117,484.77.

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What is the slope-intercept equation for the line below? (0,1) (4,3)

const2013 [10]

The slope-intercept form:

$y=mx+b$

m - slope

b - y-intercept → (0, b)

The formula of a slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

We have the points (4, 3) and (0, 1) → b = 1.

Calculate the slope:

$m=\dfrac{1-3}{0-4}=\dfrac{-2}{-4}=\dfrac{1}{2}$

Answer: $\boxed{D.\ y=\dfrac{1}{2}x+1}$

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2 years ago