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Snezhnost [94]
2 years ago
11

Morgan rewrote the expression 90 + (10 + 4.8) as (90 + 10) + 4.8. How will this change the work that is needed to evaluate the e

xpression?
4.8 is now multiplied by 90 and 10.
4.8 is now added to 10 before adding 90.
4.8 is now added after finding the sum of 90 and 10.
4.8 is now added to both 90 and 10.
Mathematics
2 answers:
SSSSS [86.1K]2 years ago
7 0

Answer:

C

Step-by-step explanation:

just did it

Archy [21]2 years ago
3 0

Answer:

Answer is c

Step-by-step explanation:

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Pablo and Nadia are playing a game on a coordinate grid. Pablo puts a playing piece at point (-2, 3) and Nadia puts a playing pi
7nadin3 [17]

Answer:

The distance between the two playing pieces is of 6.4 units.

Step-by-step explanation:

Suppose we have two points:

A = (x_{1}, y_{1})

B = (x_{2}, y_{2})

The distance between these points is:

D = \sqrt{(x_{2} - x_{1})^{2} + (y_{2} - y_{1})^{2}}

Distance between:

A(-2,3) and B(3,-1)

D = \sqrt{(3 - (-2))^{2} + (-1 - 3)^{2}} = \sqrt{41} = 6.4

The distance between the two playing pieces is of 6.4 units.

5 0
2 years ago
Mike earns $6.50 per hour plus 4% of his sales enter an equation for mikes total earnings, e, when he works x hours and has a to
Cerrena [4.2K]
First identify what each variable means. since X is the amount of hours he works, and he makes $6.50 an hour, you know you need to multiply those two numbers together creating the 6.50x. You also know Y is his total sales, and he earns 4% of Y. To find 4% of Y you need to turn the percent into a decimal, and to do this you move the decimal two spaces to the left. Since 4 is a whole number, the decimal is after the 4 so you get .04 as your decimal. Then youd multiply .04 by Y getting .04y. Lastly you add 6.50x + .04y to get E, mikes total earnings. So your final equation is

6.50x + .04y = e

Hope this all makes sense 

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2 years ago
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2 years ago
Starting from 300 feet away, a car drives toward you. It then passes by you at a speed of 48 feet per second. The distance dd (i
deff fn [24]
The answer to this question would be: 5 second

In this question, you are given the initial distance (300ft), car velocity(48ft/s) and the final distance(60ft). You are also given the equation to calculating the distance, so this question should be easier. The question is when the time where the distance is 60 ft. So the answer would be:

distance= 300-48t
60 = 300ft- 48t
48t= 300- 60=240
t= 5
7 0
2 years ago
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A log splitter uses a pump with hydraulic oil to push a piston, attached to which is a chisel. The pump can generate a pressure
faust18 [17]

we are given

The pump can generate a pressure of 2.3x107 pa

so,

p=2.3*10^7

a radius of 0.041 m

so,

r=0.041m

a stroke lasting 29 s, the piston moves 0.57 m

so,

h=0.57m

t=29s

Firstly, we will find area

A=\pi r^2

A=\pi (0.041)^2

A=0.00528

now, we can use power formula

P=\frac{W}{t}

F=pA

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so, W=pAh

we can plug it

P=\frac{p*A*h}{t}

now, we can plug values

P=\frac{2.3*10^7*0.00528*0.57}{29}

now, we can simplify it

Power=2386.92414 watt.........Answer

6 0
2 years ago
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