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Solnce55 [7]
3 years ago
13

Can someone please help me to find the answer for the equation 4r^2-8r+3 with area model

Mathematics
1 answer:
Wewaii [24]3 years ago
4 0

Answer:

8r+3r

Step-by-step explanation:

1. EXPONENTS----- do 4r to the 2nd and you get 16r

now you have 16r-8r+3

2.COMBINE LIKE TERMS------ 16r-8r and you get 8r

now you have 8r+3

3.8r+3

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what is the answer to Lakshmi planted 20 begonias, but her neighbor’s dog ate 7 of them. What percent of the begonias did the do
Alenkasestr [34]

Answer:

35%

Step-by-step explanation:

divide 7 by 20.

4 0
3 years ago
Read 2 more answers
There are 6 bricks laid end to end to form a row in a flower garden each brick is 7 1/3 inches long how long is the row of brick
JulsSmile [24]

Answer:

The answer is 44 inches.

Step-by-step explanation:

6×7 1/3 = 44

6 0
3 years ago
A spherical hot air balloon has a diameter of 55 feet when the balloon is inflated the radius increases at a rate of 1.5 feet pe
Nuetrik [128]

Answer: 46.90mins

Step-by-step explanation:

The given data:

The diameter of the balloon = 55 feet

The rate of increase of the radius of the balloon when inflated = 1.5 feet/min.

Solution:

dr/dt = 1.5 feet per minute = 1.5 ft/min

V = 4/3·π·r³

The maximum volume of the balloon

= 4/3 × 3.14 × 55³

= 696556.67 ft³

When the volume 2/3 the maximum volume

= 2/3 × 696556.67 ft³

= 464371.11 ft³

The radius, r₂ at the point is

= 4/3·π·r₂³

= 464371.11 ft³

r₂³ = 464371.11 ft³ × 3/4

= 348278.33 ft³

348278.333333

r₂ = ∛(348278.33 ft³) ≈ 70.36 ft

The time for the radius to increase to the above length = Length/(Rate of increase of length of the radius)

The time for the radius to increase to the

above length

Time taken for the radius to increase the length.

= is 70.369 ft/(1.5 ft/min)

= 46.90 minutes

46.90mins is the time taken to inflate the balloon.

5 0
3 years ago
2a +7= 15 answer please
Paul [167]

Answer:

a = 4

Step-by-step explanation:

2a + 7 = 15

     - 7  - 7

2a = 8

/2   /2

a = 4

Hope this helps!

7 0
2 years ago
Read 2 more answers
A box holds three circular flower pots, each with the same diameter. What is the exact area of the base of one pot? Show your wo
RoseWind [281]
19.635 square inches.

Assuming that the pots are arranged in a straight line, each pot would have a diameter of 5, because 5 • 3 = 15, and 15 is the length of the box. The radius of the base of one pot is therefore 2.5.
A = pi • r^2 = pi • 2.5^2 = 19.635 (approximation)
7 0
2 years ago
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