2 years ago

Over what interval is the parabola below decreasing?

Mathematics

1 answer:

Anni [7]2 years ago

3 0

I think it’s the first answer choice

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Factor the GCF: 28a^3b^4 + 20a^2b^2 − 16ab^3.

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D. 4ab(7a^2b^3+5a-4b^3)

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2 years ago

The drying times for a certain type of cement are normally distributed with a standard deviation of 30 minutes. A researcher wis

IceJOKER [234]

Answer:

h. 36

Step-by-step explanation:

For a 68.26% confidence, z = 1.0.

Standard deviation (s) = 30 minutes

The sample size needed to assure that the sample mean does not differ from the true mean by more than 5 minutes is given by:

$5\geq z*\frac{s}{\sqrt n}\\\sqrt n\geq 1*\frac{30}{5}\\n\geq 36$

The sample size needed is 36.

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2 years ago

Complete the two-column proof by providing a reason for each of the five statements.

Mnenie [13.5K]

Answer:

Step-by-step explanation:

Given:

RUTS is a rectangle.

To prove:

∠USR ≅ ∠SUT

Statements Reasons

1. RUTS is a rectangle 1. Given

2. RU = ST, UT = RS 2. By the definition of a rectangle

3. ∠STU = ∠SRU = 90° 3. Definition of a rectangle

4. ΔURS ≅ ΔSTU 4. By the LL theorem of congruence

5. ∠USR ≅ ∠SUT 5. CPCTC

4 0

2 years ago

Read 2 more answers

8x^3-6x^2+13x-4<br> Please simplify this expression and tell me how u simplified it.

jeka94

This expression is already simplified.

5 0

2 years ago

N/1.6 = 5 what does n equal

FinnZ [79.3K]

N= 8
b/c if u do it backwards 5*1.6=8- you get 8
and to check 8/1.6=5

so n= 5
hope this helps

6 0

2 years ago