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2 years ago

What is the slope of line that passes through the pair of points (4,7),(7,-2)

Mathematics

1 answer:

Anarel [89]2 years ago

6 0

Answer: -3

Step-by-step explanation: Plug the points into rise over run and solve

hope this helps;)

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2.48 rounded to the nearest cent

aleksklad [387]

Answer:

Step-by-step explanation:

.48 rounds down

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3 years ago

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Which of the following pairs is not correctly written in scientific notation

kow [346]

B in the answer <span>not correctly written in scientific notation</span>

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3 years ago

The width of a rectangle is increasing at a rate of 2 cm/sec, while the length increases at 3 cm/sec. At what rate is the area i

lorasvet [3.4K]

Answer:

The area of the rectangle is increasing at a rate of $22\ cm^2/s$ .

Step-by-step explanation:

Given : The width of a rectangle is increasing at a rate of 2 cm/ sec. While the length increases at 3 cm/sec.

To find : At what rate is the area increasing when w = 4 cm and I = 5 cm?

Solution :

The area of the rectangle with length 'l' and width 'w' is given by $A=l w$

Derivative w.r.t 't',

$\frac{dA}{dt}=w\frac{dl}{dt}+l\frac{dw}{dt}$

Now, we have given

$\frac{dl}{dt}=3\ cm/s$

$l=5\ cm$

$\frac{dw}{dt}=2\ cm/s$

$w=4\ cm$

Substitute all the values,

$\frac{dA}{dt}=(4)(3)+(5)(2)$

$\frac{dA}{dt}=12+10$

$\frac{dA}{dt}=22\ cm^2/s$

Therefore, the area of the rectangle is increasing at a rate of $22\ cm^2/s$ .

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2 years ago

Solve for the value of x in the picture above

aksik [14]

Answer: 40

Step-by-step explanation:

Since this is a scalene, we know there are two 70 degree angles. Because triangles are 180 degrees, and 70 + 70 = 140, 180 - 140 = 40.

Hope this helps,

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3 years ago

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5/2 as a mixed numer

Lady_Fox [76]

5/2=2.5 So you can write this as a fraction. 2 5/10 and then simplify 2 1/2. I hope this helps. :) Brainliest answer please. :)

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3 years ago

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