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makkiz [27]
3 years ago
5

Helppp

Mathematics
1 answer:
adoni [48]3 years ago
7 0

Answer:

- Early in the race,_Alberto_ runs faster.

- Alberto maintains a speed of _20_ km/h during the first hour of the race.

- meanwhile, Bianca’s running speed _Is exponential_

-The first person to cross the finish line is_Bianca_

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Factor completely 16x4 − 81.
andrew11 [14]

Answer:

-17

Step-by-step explanation:

Factor the polynomial.

<em>-17</em>

6 0
3 years ago
Read 2 more answers
A rectangular swimming pool is 25 ft long and 20 1/2 ft wide, and it must be filled to a depth of 4 1/2 ft. One cubic foot of wa
bazaltina [42]

ANSWER

307½ gallons of water

EXPLANATION

The volume of the rectangular swimming pool is

V = l \times w \times h

where l=25ft and w=20½ ft.

when it is filled to a depth of 4½ ft ,then the height is , h=4½ ft.

We substitute these values into the formula to get:

V = 25\times 20.5\times 4.5

V = 2306.25 {ft}^{3}

If one cubic foot of water is 7½ gallons, then 2306.25 cubic feet will be

\frac{2306.25}{7.5}  = 307.5gallons

We need 307.5 gallons of water to fill the pool.

4 0
4 years ago
The perimeter of a regular quadrilateral is 12 inches. What is its area?<br><br> plz help !!!
Vadim26 [7]
The area would be 9 because the perimeter of the regular quadrilateral would be 3 and if you multiply 3 by 3 you have 9.
4 0
3 years ago
Angle a and b are complementary. M angle a equal (5x +2) degrees. Find m angle b. Justify your reasoning. Will mark brainliest !
Pachacha [2.7K]

Answer:

 ∠b = 88 - 5x

Step-by-step explanation:

If a and b are complementary, then sum of two angles is 90

∠a + ∠b = 90

5x + 2 + ∠b = 90

             ∠b = 90 - 5x - 2

             ∠b = 88 - 5x

3 0
3 years ago
Pls help I only need this)
Blizzard [7]

Answer:

90 degrees and direction is clockwise

Step-by-step explanation:

3 to 6 is 1/4th of the clock

360 divided by 4 = 90

7 0
3 years ago
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