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3 years ago

Help please you will find every thing on the picture

Mathematics

1 answer:

hram777 [196]3 years ago

8 0

1:5 = 2:10
The ratio 1:5 is less than 3:10.

Please select this answer as the brainliest!

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Stock prices fell 250 points one day and 60 points the next day. What is the average change in stock prices over the two days

arsen [322]

Answer:

the average change in stock prices over the two days is -155

Step-by-step explanation:

The computation of the average change in stock price over the two days is shown below:

= (-One day points - second day points) ÷ number of days

= (-250 points - 60 points ) ÷ 2 days

= -310 points ÷ 2 days

= -155

Hence, the average change in stock prices over the two days is -155

We simply applied the above formula so that the average change could come

3 0

3 years ago

Attachment Below! Help Pls!

Elina [12.6K]

Answer:

D=3+4h becausw they are counting by 3 starting from four

7 0

3 years ago

Read 2 more answers

Write 17% as a decimal

netineya [11]

0.17

yuh this is correct lol

5 0

3 years ago

A study found that the average stopping distance of a school bus traveling 50 mph was 264 feet. a group of automotive engineers

lutik1710 [3]

Answer:

Step-by-step explanation:

Given that a study found that the average stopping distance of a school bus traveling 50 mph was 264 feet.

Sample taken showed the following results

$n=40\\\bar x =262.3 feet\\Std dev = \sigma= 3 ft$

Since population std deviation is known and sample size is large, z test can be used.

$H_0: \bar x=264\\H_a: \bar x$

(Left tailed test)

Mean difference = $264-262.3 = 1.7$

Std error = $\frac{\sigma}{\sqrt{n} } \\=\frac{3}{\sqrt{40} } \\=0.474$

Z = test statistic = mean diff/std error

= $\frac{1.7}{0.474} \\=3.584$

p value = 0.00017

Since p < alpha our 0.05 we reject null hypothesis

There is evidence to show that mean is less than 264 feet

(Assumptions:

Sample are randomly drawn

Sample represents the population

4 0

3 years ago

What is the graph of -13>-5x+2>-28

Sedbober [7]

................it shows aver thang ..................

7 0

3 years ago