Please help me solve this!!


Bobby rode his skateboard 4 miles 30 rode her bicycle 10 miles in minutes. Who traveled at a greater average speed? Define an appropriate unit of speed and provide mathematical justification for your answer.

Answer:

Abelito had the greater average speed

Step-by-step explanation:

Given

Bobby:

[tex]Distance =4\ miles[/tex]

[tex]Time = 30\ minutes[/tex]

Abelito

[tex]Distance = 10\ miles[/tex]

[tex]Time = 48\ minutes[/tex]

Required:

Who had a greater average speed

Average speed (S) is calculated as:

[tex]S = \frac{Distance}{Time}[/tex]

We will make use of mph (miles per hour) as the unit of speed.

For Bobby:

[tex]S_B = \frac{4\ miles}{30\ minutes}[/tex]

Convert minute to hour

[tex]S_B = \frac{4\ miles}{0.5\ hr}[/tex]

[tex]S_B = 8mph[/tex]

For Abelito

[tex]S_A = \frac{10\ miles}{48\ minutes}[/tex]

Convert minute to hour

[tex]S_A = \frac{10\ miles}{0.8\ hr}[/tex]

[tex]S_A = 12.5mph[/tex]

By comparison: 12.5mph > 8mph

Hence: Abelito had the greater average speed

Jessica has an account with a credit union. Her account earns 2.6% simple interest yearly. Exactly a year and a half ago, she opened her account with $900.

How much interest has she earned so far?
A.
$35.10
B.
$2,340.00
C.
$46.80
D.
$28.08
pls someone help im very confused

Write an equation for the function whose graph is described.
The shape of f(x) = |x|, but shifted 19 units up and then reflected in the x-axis

9.Patients who are addicted to cocaine are sometimes using the drug to combat
depression. As such, sometimes addicts are given antidepressant medications to
prevent relapse. A three-year study compared the effects of two such medications,
lithium and desipramine, along with a placebo for 72 cocaine users wishing to break
the habit. The patients were put into 3 groups of 24, and given 1 of the 3 treatments at
random. This two-way table illustrates the results.
Treatment Relapse No relapse Total
Desipramine 10 14 24
Lithium 18 6 24
Placebo 20 4 24
Total 48 24 72
According to the table, 48 of the addicts relapsed regardless of the treatment given.
This number is an example of a
A. relative frequency
B. marginal frequency.
C. conditional relative frequency.
D. joint frequency

#17. The height, H metres, of a certain species of Fir
tree can be estimated from the formula.
h= 35d , where d metres is the diameter at the
base. use the formula to determine the approximate
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Consider a 95 percent confidence interval constructed for the difference between two population
proportions PR and Ps. The interval for PR - Ps is given as (-0.05, 0.15). Which of the following is an
appropriate interpretation of the confidence level?
In repeated random sampling with the same sample size, êr - Ộs will be contained in
the interval approximately 95 percent of the time.
In repeated random sampling with the same sample size, PR will be contained in the
interval approximately 95 percent of the time.
In repeated random sampling with the same sample size, Ôr will be contained in the
interval approximately 95 percent of the time.
The probability is 0.95 that the difference in the sample proportions PR - Ổs is between
-0.05 and 0.15
In repeated random sampling with the same sample size, approximately 95 percent of the
intervals will capture the difference in population proportions, PR - Ps.

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Find the cost of the book.
13

Please help me answer this!!!

PLEASE HELP WILL GIVE LOTS OF POINTS & BRAINLY!!

Decrease £313 by 62%

A cylinder is sliced horizontally, parallel
to its base, and vertically. Which of
the following could represent cross
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Circle and triangle
Circle and rectangle
Circle and hexagon
Circle and sphere

Question is in the Picutre attached.

Select all the ratios that are equivalent to 8 : 6. *

4:3
6 to 8
16:12
10:8
7 to 5

What is the range of the data below? 6.5, 7.6, 9.1, 2.4, 8.8​

A 440-yard race had ten athletes which ran for the following times (in seconds): 46.9, 48.9, 46.7, 46.2, 46.5, 47.2,47.5,46.1, 48.9, and 46.4 . What is the mean of the three fastest runners?

PLZ HELP ITS DUE TONIGHT
Because two pairs of angles are congruent, the triangles are similar by
the (select)
QR=

Plsssss help plssss ASAP plssss I beg u plsssssssssssssssssssss it’s so hard :((((
Which situation is a true statement about payment options?

CLEAR CHECK

A) An advantage of online banking is that you do not need to keep detailed records when paying bills.

B) Paying with a credit card means the amount you spend will be deducted from your checking account.

C) Keeping track of your debit card transactions will help avoid charges resulting from insufficient funds.

D) To avoid paying interest on your credit card purchases, pay only part of your balance each month.

Which one? I’ll mark brainliest

suzette went to the store and bought some eye liner for $2.50. two weeks later, the price of the eyeliner was increased by 50%. what was the new price of the eyeliner

A, B, and C are polynomials, where: A = 3x – 4 B = x + 7 C = x2 + 2 What is A2 – (B + C) in simplest form?
8x2 – 25x + 7
8x2– 25x + 11
10x2 – 25x + 7
10x2 – 25x + 11

help i need help on this​

Y multiplied by 2 1/2

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Write an expression 12×4 in words

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Use z=21 and h=4

Shannon drank 1/5 cup of milk
and 3/4 cup of water. How much
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Answer

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find the x (please help lol)