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3 years ago

6

Tiana can clear a football feild of debris in 3 hours. Jacob can clear the same feild in 2 hours. If they decide to clear the fe

ild together, how long will it take them

1 answer:

OleMash [197]3 years ago

3 0

Answer:

1 hour

Step-by-step explanation:

3 hours subtract 2 hours

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Solve for x. 2 1/2x − 3/4 (2x+5) = 38 ASAP

svetoff [14.1K]

Answer:

x = 41 3/4

Step-by-step explanation:

(2 1/2)x -(3/4)(2x +5) = 38

(2 1/2)x -(1 1/2)x -15/4 = 38 . . . . use the distributive property

x = 38 +3 3/4 . . . . . . add 15/4

x = 41 3/4

_____

Another way to solve this is to "clear fractions" by multiplying the whole equation by 4:

10x -3(2x +5) = 152

4x -15 = 152 . . . . eliminate parentheses

4x = 167 . . . . . . . add 15

x = 41 3/4 . . . . . . divide by 4

7 0

3 years ago

A car is traveling at a speed of 30.0m/s encounters an emergency and comes to complete stop how much time will it take for the c

Travka [436]

Answer:

$7.5\ seconds$

Step-by-step explanation:

The Equation of motion is given by

$v=u-at\\\\\ v:Final\ Velocity\\u:Initial\ Velocity\\a:acceleration\\t:time$

Here $v=0(as\ at\ the\ end\ car\ stops), u=30m/s,a=-4m/s^2$

$0=30-4t\\\\4t=30\\\\t=\frac{30}{4}\\\\t=7.5\ seconds$

8 0

3 years ago

What rectangle could created from a parallelogram with base of 6 and height of 2

Anon25 [30]

Answer:

see the explanation

Step-by-step explanation:

we know that

Every parallelogram can be made into a rectangle

so

With a parallelogram with a base of 6 and height of 2 you could create a rectangle with a base of 6 and height of 2

see the attached figure to better understand the problem

5 0

3 years ago

Read 2 more answers

How many deciliter are equivalent to 5 cups

notsponge [240]

Answer:

11.8294Step-by-step explanation:

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3 years ago

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A worker at a landscape design center uses a machine to fill bags with potting soil. Assume that the quantity put in each bag fo

ddd [48]

Answer:

Mean = 15.15

Standard deviation = 0.6062

Step-by-step explanation:

We are given a uniform distribution of quantity to be put in each bag.

Low and high filling weights:

14.1 pounds and 16.2 pounds

a = 14.1

b = 16.2

a) Mean:

$\mu = \displaystyle\frac{a+b}{2}\\\\\mu = \frac{14.1+16.2}{2} = 15.15$

b) Standard Deviation:

$\sigma = \sqrt{\displaystyle\frac{(b-a)^2}{12}}\\\\= \sqrt{\dfrac{(16.2-14.1)^2}{12}} = \sqrt{0.3675} = 0.6062$

4 0

3 years ago