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3 years ago

Is 2 divided by two and 1 half equal to one half

Mathematics

2 answers:

Ronch [10]3 years ago

8 0

Answer:

Step-by-step explanation:

2 divided by two and 1 half is equivalent to 2/2.5. Using.a calculator, you see that the answer is 0.8 , or 2/5.

ZanzabumX [31]3 years ago

6 0

Answer:

Step-by-step explanation:

2/(2 1/2) ≠ 1/2

The correct answer is 2/(2 1/2) = 0.8

If this answer is correct, please make me Brainliest!

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notka56 [123]

I dont know because I’m confused

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3 years ago

Is it A, B, or C? PLEASE HELP

Zanzabum

Step-by-step explanation:

y = kx, where k is the constant of proportionality. (1)

Therefore y = x and line B depicts that.

6 0

2 years ago

Read 2 more answers

What is the first term in a geometric sequence if the common ratio is −2 and the sum of the first five terms is 77?

kirza4 [7]

Answer is a1 = 7

Using equation (derived from formula to find sum of values in a geometric series),
$77 \: = \frac{a(1 - ( { - 2}^{5}))}{1 - ( - 2)}$
Hence, solve for a.

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3 years ago

An investigator compares the durability of two different compounds used in the manufacture of a certain automobile brake lining.

Tanya [424]

Answer:

98% Confidencce Interval is ( 3030.6, 7467.4 )

Step-by-step explanation:

Given that:

Sample size $n_1 =$ 71

Sample size $n_2 =$ 31

Sample mean $\overline x_1 =$ 41628

Sample mean $x_2 =$ 36,379

Population standard deviation $\sigma_1$ = 4934

Population standard deviation $\sigma_2 =$ 4180

At 98% confidence interval level, the level of significcance = 1 - 0.98 = 0.02

Critical value at $z_{0.02/2} = 2.33$

The Margin of Error = $z \times \sqrt{\dfrac{\sigma_1^2}{n_1}+\dfrac{\sigma^2_2}{n_2} }$

= $2.33 \times \sqrt{\dfrac{4934^2}{71}+\dfrac{4180^2}{31} }$

= $2.33 \times \sqrt{\dfrac{24344356}{71}+\dfrac{17472400}{31} }$

= $2.33 \times \sqrt{906504.06 }$

= 2218.40

The Lower limit = $( \overline x_1 - \overline x_2) - (Margin \ of \ error)$

= ( 41628 - 36379 ) - ( 2218.40)

= 5249 - 2218.40

= 3030.6

The upper limit = $( \overline x_1 - \overline x_2) + (Margin \ of \ error)$

= ( 41628 - 36379 ) + ( 2218.40)

= 5249 + 2218.40

= 7467.4

∴ 98% Confidencce Interval is ( 3030.6, 7467.4 )

5 0

3 years ago

Select all the statements that can be used as steps to solve the equation 6[4(2x−1)]=80−8 .

Virty [35]

<span>The only statement that I can found in that problem is
-Subtract 8 from 80.
</span>

3 0

3 years ago