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Vladimir79 [104]
3 years ago
9

HELP ASAP !!! Which of the following are identities? Check all that apply.

Mathematics
2 answers:
Lady_Fox [76]3 years ago
8 0

Answer:

they should all be checked

Step-by-step explanation:

ap3x

anastassius [24]3 years ago
6 0

Answer:

A,CAND D

Step-by-step explanation:

ADD ME AS BRAINLIEST

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Please help I'm not able to solve this I have tried so many times and the answers I have gotten are all wrong. Please help!! If
goblinko [34]

Answer:

The diameter will be given by 50 cm ÷ 3.142 = 15.9134 cm

The radius will be 15.9134 ÷2 = 7.9567 cm or about 7.96 cm

The area of a circle is given by \pi × square of radius

Area = 3.142 × 7.96×7.96 = 199.0821 square cm

7 0
3 years ago
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Item 17 The amount of chlorine in a swimming pool varies directly with the volume of water. The pool has 2.5 milligrams of chlor
zvonat [6]
8000 gal *\frac{ 1 L}{0.264 gal}*\frac{2.5 mg}{1 L} = 75,757 mg

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3 years ago
Which equation is a linear equation?<br> y=2x2+3<br> y=2/x+3<br> y=2x+3<br> y=2x+3
Setler [38]
Y=2x+3 is a linear equation.
8 0
3 years ago
A marketing firm is asked to estimate the percent of existing customers who would purchase a "digital upgrade" to their basic ca
Ugo [173]

Answer: A. 664

Step-by-step explanation:

Given : A marketing firm is asked to estimate the percent of existing customers who would purchase a "digital upgrade" to their basic cable TV service.

But there is no information regarding the population proportion is mentioned.

Formula to find the samples size , if the prior estimate to the population proportion is unknown :

n=0.25(\dfrac{z*}{E})^2

, where E = Margin of error.

z* = Two -tailed critical z-value

We know that critical value for 99% confidence interval = z*=2.576  [By z-table]

Margin of error = 0.05

Then, the minimum sample size would become :

n=0.25(\dfrac{2.576}{0.05})^2

Simplify,

n=0.25\times2654.3104=663.5776\approx664

Thus, the required sample size= 664

Hence, the correct answer is A. 664.

5 0
3 years ago
Someone help 10 points each easy
Fantom [35]

Answer:

50

Step-by-step explanation:

4 0
2 years ago
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