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3 years ago

What are the solutions to the quadratic equation x2 – 16 = 0?

Mathematics

2 answers:

kykrilka [37]3 years ago

5 0

Answer:

its b

Step-by-step explanation:

i got it right on the test

exis [7]3 years ago

4 0

Answer:

2nd choice: x=4 and x=-4

Step-by-step explanation:

x^2 - 16 = 0 can be simplified to (x-4)(x+4)=0

x-4 = 0 so x = 4

and x + 4 = 0 so x = -4

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Sixty percent of the students at a certain school wear neither a ring nor a necklace. Twenty percent wear a ring and 30 percent

Reptile [31]

Answer:

0.4

Step-by-step explanation:

Given

60 % wear neither ring nor a necklace

20 % wear a ring

30 % wear necklace

This question can be Solved by using Venn diagram

If one person is choosen randomly among the given student the probability that this student is wearing a ring or necklace is

$P\left ( wear \ ring\ or \ necklace )+P\left ( neither\ ring\ or\ necklace)=1$

$P\left ( wear \ ring\ or\ necklace )=1-0.6=0.4$

The sum of probabilty is equal to 1 because it completes the set

Therefore the required probabilty is 0.4

7 0

3 years ago

The angular velocity of a point on a circle with radius of 12 feet is 15 radians per second. Find the speed of the point on the

Lyrx [107]

Angular speed:
(24*pi)*(15 pi/2pi) ft/sec:
565 ft/sec

5 0

3 years ago

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Match each value with the smallest number set that it belongs to.

bulgar [2K]

(-2)^3
12^0
I don't know the rest

4 0

3 years ago

Length of a rectangular prism is increased by factor of 1.5. The width is doubled and height is tripled. What is the new volume?

dimulka [17.4K]

Nine times the original volume

Step-by-step explanation:

Let the length, width and height of the rectangular prism be 'l' 'w' and 'h'.

The volume of the rectangular prism is given by,

V = W x l x h

The original volume of the rectangular prism is,

V = wlh

Here the length is 1.5 the original length

So, l = 1.5 x l = (1.5l)

And the with is doubled. So,

W = 2W

The height is tripled. So,

h = 3h

Volume of the new rectangular prism is,

V = (1.5l) (2w) (3h)

V = 9 wlh

We know that wlh is the original volume of the rectangular prism.

So the new volume is 9 times the original volume.

4 0

3 years ago

Please answer these 4 math questions for me! Pretty easy! need then ASAP!!!!! I have to get them right or my life is doomed! (ca

Grace [21]

Answer:

Last one is 90 and -65, 3rd one is 120 feet i think, and i am 99% sure 2nd one is 129

Step-by-step explanation:

5 0

3 years ago

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