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iren [92.7K]
4 years ago
11

Simplify 5x2(5x2− 3x − 1).

Mathematics
2 answers:
Leya [2.2K]4 years ago
4 0
I think the answer would be 25x^4-15x^3-5x^2
BaLLatris [955]4 years ago
3 0
The answer to your problem is........... 60..... i think :)
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Determine if the two triangles are congruent. if they are, state how you know.
kicyunya [14]
Yea they are cuz they have the same side and angle measurements
8 0
2 years ago
Read 2 more answers
Factor each completely.<br>1) 9r²-26r+16<br><br>2) 25b²-9​
Elden [556K]

Answer: 1. ( 9r - 8 ) x ( r - 2 )

2. ( 5b - 3 ) x ( 5b + 3 )

Step-by-step explanation:

7 0
3 years ago
Reese went cycling in the morning .The ratio of her distance in miles to the length of time in minutes was 15:60 tease concluded
rodikova [14]

Answer:

No, she is not correct as her speed is 0.25 miles per minute.

Step-by-step explanation:

Given:

Ratio of distance  to time taken is 15 : 60.

Distance is in miles and length of time is in minutes.

We know that, average speed is given as the ratio of the distance traveled and the length of the time taken.

So, the ratio above is nothing but the average speed of Reese for cycling.

Thus, average speed of Reese is given as:

\textrm{Average speed}=\frac{Distance}{Time}\\\\\textrm{Average speed}=\frac{15}{60}\ miles\ per\ min\\\\\textrm{Average speed}=\frac{1}{4} = 0.25\ miles\ per\ min

Therefore, the average speed of Reese is 0.25 miles per minute which is not equal to the one mentioned by Reese as 4 miles per minute.

So, Reese conclusion of her average speed is incorrect. It's not 4 but the reciprocal of 4 which is 0.25 miles per minute.

7 0
4 years ago
The dimensions of a rectangle porch are 16 feet long 12 feet wide. Use the scale of 1 inch=4 feet and a ruler to make a scale dr
Mnenie [13.5K]

Answer:

4 inch long and 3 inch wide

Step-by-step explanation:

so since the scale factor is 1 inch = 4 feet and the actual length is 16 feet by 12 feet all you got to do is divide both lengths by 4 and you get 4 and 3 and you convert the unit to inches so it would be 4 inches and 3 inches. now all you got to do is draw a 4 inch long by 3 inch wide rectangle and your good

3 0
3 years ago
Read 2 more answers
A plane rises from​ take-off and flies at an angle of 9 degrees with the horizontal runway. When it has gained 500 ​feet, find t
Len [333]

Answer:

The dashed hypotenuse measures: 3,205.13 ft.

Step-by-step explanation:

                                                               . B  (Plane is here)

                                        .                      .        

                     .                                         .      

A  .       .          .        .          .          .        . C

BC = 500 ft

Angle (Ф) between AB and AC = 9 degrees

So,

Sin(Ф) = BC/AB

Since we need to know how much hypotenuse AB measures, Let's isolate it from the equation:

AB = BC / Sin (Ф)

AB = 500 ft. / Sin (9)

AB = 500 ft./ 0.156

AB = 3,205.13 ft.

 

8 0
4 years ago
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