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Airida [17]
2 years ago
12

What is a equivalent fraction for 4/21

Mathematics
1 answer:
joja [24]2 years ago
3 0
One equivalent fraction for 4/21 could be 8/42.
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A water balloon is 5 feet above the ground when Sally launches it into the air. Use the quadratic equation 0 = -t2 + 4t + 5 to f
Alborosie

Answer:

2-sqrt14/2, 2+sqrt13/2.

Step-by-step explanation:

What you do is you have to do the quadratic equation like it says in the problem.

x=  −b± sqrtb^2 −4ac /2a .

a=-2, b=4, c=5.

x=-4±sqrt(4)^2-4(-2)(5)/2(-2).

x=-4±sqrt16+40/-4.

x=-4±2sqrt14/-2.

2-sqrt14/2, 2+sqrt13/2. is your answer once you have done everything.

​  

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6 0
3 years ago
A cylinder has a volume of 321 cubic units. If a cone has the same height and radius as the cylinder, what is the volume in cubi
Sati [7]
Cone's volume is third of cylinder's volume, so 321*1/3=107 cubic units. Answer A. is correct.
4 0
3 years ago
Read 2 more answers
the area of the top of a rectangular table is 323 square feet. If the length of the table is 19 feet , what is the width
sergejj [24]

Answer:

hello :

the area is : A= w ×l     ...   w :  the width    l : the length

A = 323     l = 19     w ?

l = A/w

l = 323/ 19

l = 17 feet


4 0
3 years ago
The temperature in a greenhouse should be 66 degrees or higher. One​ morning, the heater stopped working. The temperature droppe
erastova [34]

Answer:

The temperature in the greenhouse was at least 68 degrees before the heater stopped working.

Step-by-step explanation:

It was at 68 then it dropped by 2 degrees.

8 0
3 years ago
Pat shows that 16 1/2= the square root of 16. What is one possible way pat could have shown this correctly?
kifflom [539]
<h3>Answer: Choice C</h3>

The base 16 is the same as 4*4.

From there, the rule (a*b)^c = a^c*b^c is used to get (4*4)^{1/2} = 4^{1/2}*4^{1/2}

Afterward, the exponents are added getting 1/2+1/2 = 2/2 = 1. The rule is a^b*a^c = a^{b+c} which only works if the bases are both the same.

6 0
3 years ago
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