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Lelu [443]
3 years ago
10

What is the following product? (xsqrt7 - 3sqrt8)(xsqrt7 -3sqrt8)

Mathematics
1 answer:
Brilliant_brown [7]3 years ago
6 0

Answer:

See the answer below

Step-by-step explanation:

x²s²q²r²t²49 - 6xs²q²r²t²112 + 9s²q²r²s²64

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Starlight tree farms sells douglas firs and noble first one December they sold 139 more douglas first than noble firs the total
Aloiza [94]
Part A:

Given that <span>Starlight tree farms sells Douglas Firs and Noble First.

Let </span>n be the number of Noble Fir trees sold, then<span> if they sold 139 more Douglas First than Noble Firs, this means that the number of Douglas First trees sold is n + 139.

Given that the total number of trees sold was 377, then we have, n + n + 139 = 377, which means that 2n + 139 = 377

Therefore, the equation that could be used to solve for n, the number of Noble Fir trees sold is 2n + 139 = 377.


Part B:

</span><span>Given that you are driving 55 miles per hour and you must drive a total of 440 miles. If you already driven 275 miles, then, the equation representing the number of hours, h, it will take to reach your destination is given by 55h + 275 = 440.

Subtracting 275 from both sides of the equation gives:

</span>55h+275-275=440-275 \\  \\ \Rightarrow55h=165
<span>
Dividing both sides by 55 gives:

</span>\frac{55h}{55} = \frac{165}{55}  \\  \\ \Rightarrow h=3
<span>
Therefore, the time it will take you to reach your destination is 3 hours.</span>
6 0
3 years ago
If pqr = 1 , rst = 0 , and spr = 0, which of the following must be zero?
ahrayia [7]
P,Q,R can't be 0, because their product is nonzero. Either of S and T could be 0, but the third one only works if S is 0.
8 0
3 years ago
PLEASE HELP! Brainlest!!! Just fill in the chart
Cloud [144]

Answer:

Softball : Speed: 29.68 m/s --- Kinetic Energy: 82.36 Joules

Horse: Speed: 13.33 m/s --- Kinetic Energy: 48,331.40 Joules

Satellite: Speed: 3067.13 m/s --- Kinetic Energy: 3,762,910,000 Joules

I hope this helps! Please give me Brainliest. Sorry for the late response, my power went out.

4 0
3 years ago
Read 2 more answers
Lisa reads an equal number of pages of a book every week. The graph below shows the number of pages of the book left to read, y,
iren [92.7K]

9514 1404 393

Answer:

  (a)  y = −50x + 250

Step-by-step explanation:

In case you don't realize that the graph starts at 250 and decreases by 50 for each increase of 1 in x, you can see if any of the equations match the given points. The only one that does is the first one:

  y = -50x +250

4 0
3 years ago
Which situation describes a car that can travel $40 miles per gallon of gasoline?
Salsk061 [2.6K]

Answer:

A car can travel 80 miles on 2 gallons of gasoline.

Step-by-step explanation:

8 0
3 years ago
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