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3 years ago

I need help with this math problem

Mathematics

1 answer:

jeka943 years ago

8 0

Answer:

The answer should be a positive 3 instead of a negative.

Step-by-step explanation:

The error is in the first step. The equation should've been set up like this...

-14+2y+4=4

-10y+2y=-4

2y=-4+10

2y=6

y=3

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P=4x+qx-5 Literal expressions

Mashutka [201]

Answer:

34(43+33(jg

Step-by-step explanation:

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3 years ago

755,082 rounded to the nearest 10,000

Tems11 [23]

760,000 is the answer

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3 years ago

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A circle with radius of \greenD{3\,\text{cm}}3cmstart color #1fab54, 3, start text, c, m, end text, end color #1fab54 sits insid

Zolol [24]

Answer:

The area of the shaded region is 125.664 square centimetre

Step-by-step explanation:

Area of the shaded region = area of the circle with radius 7 cm - area of the circle with radius 3 cm----------------(1)

Step 1: Finding the area of the circle with radius 7 cm

Area of the circle A = $\pi r^2$

On substituting the value of the radius, we get

Area of the circle A = $\pi(7)^2$

Area of the circle A = $49 \pi$ square centimetre----------------(2)

Step 2: Finding the area of the circle with radius 3 cm

Area of the circle a = $\pi r^2$

On substituting the value of the radius, we get

Area of the circle a = $\pi (3)^2$

Area of the circle a = $9 \pi$ square centimetre ----------------(3)

Step 3: Finding the area of the shaded region

Area of the shaded region = $49 \pi - 9\pi$

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6 0

3 years ago

After a car left the A station for 4 kilometers, it advanced for an hour at an average speed of 40 km/h. Find a functional relat

True [87]

The function would be f(x) = 40x + 4.

It's plus 4 because it starts counting after the 4 kilometers already happened.

It's 40x because that's the rate of change (km/h) and the x represents the hours.

f(x) basically means y, but in functions you use f(x).

Hope this helps :)

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3 years ago

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Naddik [55]

Answer:

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Step-by-step:

Since they sell their cookies for 1/3 of the price for the last 15 minutes, cookies go on sale at 8:45.

Laura bought them at 8:30, and did not get a discount.

She bought 3 cookies for 65 cents each. That's 3 x 65 = 195 cents.

Had she waited 15 minutes, she would have gotten a discount of 1/3 off.

195 cents x (1/3) is 65.

195 - 65 = 130 cents.

130 cents or 1 dollar 30 cents.

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3 years ago