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Leokris [45]
3 years ago
12

Help please, which one is a quadratic expression?

Mathematics
1 answer:
Elza [17]3 years ago
7 0

Answer: -6x^2 + 3 and 1 - 4x^2

Step-by-step explanation:

A quadratic expression is an expression that can be in the form ax^2 + bx + c, where a, b, and c are all constants, and a does not equal 0. (ax must be squared, it can't be raised to a power other than 2)

-6x^2 + 3 and 1 - 4x^2 can be in the form ax^2 + bx + c. Therefore, they are the quadratic expressions.

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How to find the perimeter ratio of two similar triangles
Free_Kalibri [48]

Answer:

of their perimeters is equal to the ratio of their corresponding side lengths. ratio of their areas is equal to the square of the ratio of their corresponding side lengths.

5 0
3 years ago
The variable z is inversely proportional to x. When x is 16, z has the value 0.875. What is the value of z when x= 21?
ziro4ka [17]
For z and x to be inversely proportional, there must be some constant k such that

zx=k

Given that z=0.875 when x=16, it follows that

0.875\cdot16=k\implies k=14

Then when x=21, we have

21z=14\implies z=\dfrac{14}{21}=\approx0.667
8 0
3 years ago
Pls help The surface area of a cone is given by the formula<br> S= al +712. Solve the formula for 2.
Luda [366]

Answer:

l = (S/pi)-r^2

Step-by-step explanation:

Just rearrange the equation.

S = pi*l + pi * r^2

S-pi*r^2 = pi*l

l = (S-pi*r^2)/pi

l = (S/pi)-r^2

7 0
2 years ago
When a grizzly bear hibernates, its heart rate drops to
djyliett [7]
The grizzly bears heart would drop 20% during hibernation
3 0
3 years ago
Flip the coin three times and record your results. While we know the theoretical probability of flipping a heads, what is the ex
ivann1987 [24]

The probability of getting heads while flipping a coin for three times is 1/2

<u>Explanation:</u>

When a coin is flipped then there are two possible outcomes.

We can either get a heads or a tail.

If a coin is flipped three times and the possibility of getting heads would be 3

Total number of outcomes would be 6 ( 2 possible outcomes X 3 times toss)

Therefore, probability of getting heads would be = 3/6

                                                                                     = 1/2

Therefore, the probability of getting heads while flipping a coin for three times is 1/2

4 0
3 years ago
Read 2 more answers
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