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3 years ago

I need help on this.

Mathematics

1 answer:

Marina86 [1]3 years ago

8 0

Option 2 and 4

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The distance between the two houses is 546m. I can walk 1.3 m/sec using the formula d=rt how long does it take to get to the hou

My name is Ann [436]

D=546m. r=1.3m/sec. 546m=1.3m/sec(t).
546m divided by 1.3m/sec = t = 420 sec (the meters will cancel out, leaving the answer to just seconds).
420 seconds divided by 60sec/min = 7 minutes.

6 0

3 years ago

Use the information below to complete the problem: p(x) = (1)/(x + 1)

bija089 [108]

Given:

The functions are:

$p(x)=\dfrac{1}{x+1}$

$q(x)=\dfrac{1}{x-1}$

To find:

The rational expression for $p(x)-q(x)$ .

Solution:

We have,

$p(x)=\dfrac{1}{x+1}$

$q(x)=\dfrac{1}{x-1}$

Now,

$p(x)-q(x)=\dfrac{1}{x+1}-\dfrac{1}{x-1}$

$p(x)-q(x)=\dfrac{(x-1)-(x+1)}{(x+1)(x-1)}$

$p(x)-q(x)=\dfrac{x-1-x-1}{x^2-1^2}$ $[\because a^2-b^2=(a-b)(a+b)]$

$p(x)-q(x)=\dfrac{-2}{x^2-1}$

Therefore, the required rational expression for $p(x)-q(x)$ is $\dfrac{-2}{x^2-1}$ .

8 0

3 years ago

Thirty-five more than .8 times a number is the same as 43 less than the product of -7 and the number

nydimaria [60]

Answer:

0.8x + 35 = -7x - 43

The number is -10.

Step-by-step explanation:

Let x = the number.

0.8x + 35 = -7x - 43

7.8x = -78

x = -10

4 0

3 years ago

HI PLS HURRY !!

VARVARA [1.3K]

Step-by-step explanation:

234751

100% sure

Goood luck.

5 0

3 years ago

A water sprinkler sprays water over a distance of 36 feet while rotating through an angle of 140 degrees. What area of lawn rece

aniked [119]

Answer: $1,583.36\ ft^2$

Step-by-step explanation:

The formula for calculate the area of a Sector of a circle is:

$A=\pi r^2(\frac{C}{360})$

Where "C" is the central angle in degrees and "r" is the radius.

Based on the data given in the exercise, you can identify that:

$r=36\ ft\\C=140\°$

(See the figure attached)

Then, you can substitute these values into the formula and then evaluate, in order to calculate the area of lawn that receives water.

The result is:

$A=\pi r^2(\frac{C}{360})\\\\A=\pi (36\ ft)^2(\frac{140\°}{360})\\\\A=1,583.36\ ft^2$

4 0

3 years ago

I need help on this.​

I need help on this.