All categories

3 years ago

Round to significant figures 0.0008515

Mathematics

2 answers:

slega [8]3 years ago

3 0

Answer:

0.00085

Step-by-step explanation:

here

Iteru [2.4K]3 years ago

3 0

The leading zeroes are not significant, just place holders.
0.0008515 = 0.0009 (1 sf) or 0.00085 (2 sf) or 0.000852 (3 sf) or 0.0008515 (4 sf)

You might be interested in

It took h to complete 1 game of cards. How many games can be completed in h?

dmitriy555 [2]

If it took one hour to complete a card game, we can tell that the average play time varies around that time.

So only one game can be completed in one hour.

Hope it helped,

Happy homework/ study/ exam!

7 0

3 years ago

A college entrance exam company determined that a score of 24 on the mathematics portion of the exam suggests that a student is

seraphim [82]

Answer:

a) The Z -value 2.397 < 2.576 at 99% or 0.01% level of significance

Null hypothesis is accepted at 0.01% level of significance

They score is above 24 on the math portion of the exam

b)

Null Hypothesis: There is no significance difference between the college level mathematics and math courses in high school

H₀: μ = 24

Alternative Hypothesis: H₁: μ ≠ 24

Step-by-step explanation:

Step(i):-

Given random sample 'n' = 250

Given data sample mean x⁻ = 24.5

Standard deviation = 3.3

Null Hypothesis: There is no significance difference between the college level mathematics and math courses in high school

H₀: μ = 24

Alternative Hypothesis: H₁: μ ≠ 24

test statistic

$Z = \frac{x^{-} - mean}{\frac{S.D}{\sqrt{n} } }$

$Z = \frac{24.5 - 24}{\frac{3.3}{\sqrt{250} } } = \frac{0.5}{0.2087} = 2.397$

a) 99% or 0.01% level of significance

Level of significance ∝ = 0.01

$Z_{\frac{\alpha }{2} } = Z_{\frac{0.01}{2} } = Z_{0.005} =2.576$

The Z -value 2.397 < 2.576 at 99% or 0.01% level of significance

Null hypothesis is accepted at 0.01% level of significance

They score is above 24 on the math portion of the exam

b) 95% or 0.05% level of significance

Level of significance ∝ = 0.05

$Z_{\frac{\alpha }{2} } = Z_{\frac{0.05}{2} } = Z_{0.025} = 1.96$

The Z -value 2.397 > 1.96 at 95% or 0.05% level of significance

Null hypothesis is Rejected at 0.05% level of significance

They score is below 24 on the math portion of the exam

6 0

3 years ago

The measure of angle 1 is 30 degrees less than twice the measure of angle 2. What is the measure of angle 1. What is the measure

Svetradugi [14.3K]

Answer:

110°

Step-by-step explanation:

the supplement of an angle is 30 degrees less than twice the measure of the angle itself. find the angle and its supplement.

Let the angle be A, then its supplement = (180 - A)

Now, since the supplement is 30 degrees less than twice the measure of the angle itself, then we'll have:

180 - A = 2A - 30

-3A = - 210

A, or the angle = $\frac{-210}{-3}$ = 70 °

Its supplement, (180 - A) = 180 - 70 = 110°

4 0

3 years ago

Isabel's company offers other programs and incentives to help employees with their savings and expenses.

Tresset [83]

Answer:

2nd 4th and 5th

Step-by-step explanation:

8 0

3 years ago

Which sequence is modeled by the graph below? coordinate plane showing the points 1, 2; 2, 4; 3, 8

irakobra [83]

A..........a..........a

5 0

3 years ago