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Andreyy89
3 years ago
15

Identify the solutions to the quadratic equation.

Mathematics
1 answer:
faltersainse [42]3 years ago
3 0

Answer:

A and E

Step-by-step explanation:

x²+3x-28=0

x²+7x-4x-28=0

x(x+7)-4(x+7)=0

(x-4)(x+7)=0

x=4, x= -7

Please give brainliest if it helps

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3. Retaj is cutting a roll of string into pieces that are each 2/3 m long . If the yarn is 6 m long, how many pieces of yarn did
Airida [17]
9 pieces of yarn

You have to divide them.
6 0
3 years ago
Which is the best estimate for this expression ?<br>a) 300 <br>b) 40<br>c) 3<br>d)0.4​
Zolol [24]

Answer:

A

Step-by-step explanation:

5 0
3 years ago
Step-by-step equation for a B &amp; C Must show all work .work on a piece of paper send a piece of paper thank you. Whoever gets
erastova [34]

Hey there!

a.) 1 inch

beginning = 2; end = 3; difference of 1

b.) December, because the length was, let's say, 2, then it went down 1 (so we're at 1), then went up 3 (4), then went down

c.) in December

Hope it helps, have a great day!

6 0
3 years ago
Read 2 more answers
• A cylindrical tank can hold 2279.64 cubic feet of water. The radius of the tank is 11 feet. What is the height of the tank?​
tia_tia [17]

Answer:

Step-by-step explanation:

so you want to know the formula for the volume of a cylinder

volume (cylinder) = area of the circular base * height

2279.64 = area of a circle + height

area of a circle is \pir^{2}

they tell us the radius is 11 feet   so r = 11

circle = \pi11^{2} = 38013271

2279.64 = 38013271 * height

2279.64 / 38013271 = height

5.996958 = height   in feet

8 0
3 years ago
A silo is in the shape of a cone. The silo is 7 meters tall, and its base has a radius of 1.5 meters. Rice costs 204$ per cubic
olganol [36]

Answer:

  $3364.65

Step-by-step explanation:

The volume of the cone is given by the formula ...

  V = (1/3)πr²h

Filling in the given numbers, we find the volume to be ...

  V = (1/3)π(1.5 m)²(7 m) = 5.25π m³ ≈ 16.49336 m³

The cost of the rice will be the product of this volume and the price per cubic meter:

  cost = (16.49336 m³)($204/m³) = $3364.65

The cost of the rice necessary to fill the volume is $3364.65.

_____

<em>Comment on pi</em>

If you use the value 3.14 for pi, the cost comes to $3362.94. A 3-digit value of pi only gives an answer good in its first 3 digits.

3 0
3 years ago
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