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lions [1.4K]
3 years ago
8

Use the quadratic formula to find the roots: -3x^2 + 27x = 42​

Mathematics
1 answer:
ch4aika [34]3 years ago
8 0

Answer:

x=2,x=7

Step-by-step explanation:

-3x^2+27x=42

x^2-9x+14=0

x^2-2x-7x+14=0

x*(xi2)-7(x-2)=0

(x-2)*(x-7)=0

x-2=0

x-7=0

x=2

x=7

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4cmx4cmx4cm pls SOMEONE 25 POINTS
STALIN [3.7K]

Answer: 4cm x 4cm x 4cm = 64cm

Step-by-step explanation:

4x4 = 16x4 = 64

7 0
2 years ago
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Absorption rates into the body are important considerations when manufacturing a generic version of a brand-name drug. A pharmac
Darya [45]

Answer:

Correct option: (D).

Step-by-step explanation:

A null hypothesis is a hypothesis of no difference. It is symbolized by <em>H₀</em>.

A Type I error is the probability of rejection of the null hypothesis of a test when indeed the the null hypothesis is true.

The type I error is also known as the significance level of the test.

It is symbolized by P (type I error) = <em>α</em>.

In this case the researcher wants to determine whether the absorption rate into the body of a new generic drug (G) is the same as its brand-name counterpart (B) or not.

The hypothesis for this test can be defined as:

<em>H₀</em>: The absorption rate into the body of a new generic drug and its brand-name counterpart is same.

<em>Hₐ</em>: The absorption rate into the body of a new generic drug and its brand-name counterpart is not same.

The type I error will be committed when the null hypothesis is rejected when in fact it is true.

That is, a type I error will be made when the the results conclude that the absorption rate into the body for both the drugs is not same, when in fact the absorption rate is same for both.

Thus, the correct option is (<em>D</em>).

6 0
3 years ago
What is 3x+8 if x=8
Mazyrski [523]

Answer:

y=32

Step-by-step explanation:

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Step-by-step explanation:

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5/8 * 4/5
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Final answer = 1/2
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2 years ago
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