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3 years ago

Which is the most accurate way to estimate 23% of 70?

Mathematics

2 answers:

Greeley [361]3 years ago

6 0

It would be what is 20% of 70. x = 20/100 x 70 = 14
20% of 70 is 14

Tema [17]3 years ago

3 0

Hi there! The most accurate way to estimate 23% of 70 is to write and solve a proportion. You would write it out as x/70 = 23/100, because we’re looking for the number that is 23% of 70. Cross multiply the values to get 1,610 = 100x. Divide each side by 100 to isolate the “x”. When you do, you get x = 16.1. There. 23% of 70 is 16.1.

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What fraction of an hour is 55 minutes? Give your answer in its simplest form.

Ilia_Sergeevich [38]

Answer:

11/12

Step-by-step explanation:

55/60 reduced by a factor of 5 becomes 11/12

7 0

3 years ago

3. You have 3 consecutive numbers, with the smallest number n.

lbvjy [14]

Heyo !!

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$\frac{A~n~s~w~e~r~ :}{}$

<h2>A. What are the 7 numbers in the term of n?</h2>

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EXPLANATION :

Because when you have 3 consecutive numbers, you have to put 7 numbers in the term of the n.

Hope It Helped!

<u>And Tell me if The answer is wrong. . .</u>

<h3><u>Good Luck With Your Assignment!</u></h3><h3 />

#LearnWithBrainly

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Jace ^-^

7 0

3 years ago

Someone please help?

PIT_PIT [208]

The last one is right

3 0

3 years ago

A marketing research company desires to know the mean consumption of meat per week among males over age 50. A sample of 217 male

guajiro [1.7K]

Answer: (3.3, 3.5)

Step-by-step explanation:

The formula to calculate the confidence interval is given by :-

$\overline{x}\pm z^* \dfrac{\sigma}{\sqrt{n}}$

, where $\overline{x}$ = sample mean.

z* = critical value.

$\sigma$ = Population standard deviation.

n= Sample size.

As per given , we have

$\overline{x}=3.4$

$\sigma=0.5$

n= 217

By using z-table , the critical value for 95% confidence level : z* = 1.96

Now, the 95% confidence interval for the mean consumption of meat among males over age 50 will be :

$3.4\pm (1.96) \dfrac{0.5}{\sqrt{217}}$

$3.4\pm (1.96) \dfrac{0.5}{14.73091986}$

$3.4\pm (1.96) 0.0339422$

$3.4\pm 0.066526712\approx3.4\pm 0.1=(3.4-0.1,\ 3.4+0.1)=(3.3,\ 3.5)$

Hence, the 95% confidence interval for the mean consumption of meat among males over age 50 =(3.3, 3.5)

4 0

3 years ago

F(x) = x^4- x^4 - 20<br><br> find all zeros by factoring and explaining the steps

Soloha48 [4]

No x-intercept/zero

Step by step

To find x-intercept/zero, substitute f(x)=0

F(x)=-20

0=-20

The statement is false for any value of

X=0

Since there is no solution for f(x)=0, there is no -intercept/Zero

Your welcome:)

5 0

3 years ago