All categories

2 years ago

PLEAAAASE HELP

Mathematics

2 answers:

Sergeeva-Olga [200]2 years ago

6 0

Step-by-step Solution:

3 1/4 + 2 1/8 + 2 7/8 + 1 3/4 + 1 3/4 = Miles ran by Evelyn last week.

<u>Solution (Part-a):</u>

3 1/4 + 2 1/8 + 2 7/8 + 1 3/4 + 1 3/4
=> 13/4 + 17/8 + 23/8 + 7/4 + 7/4
=> 26/8 + 17/8 + 23/8 + 14/8 + 14/8
=> 66/8 + 2(14/8)
=> 66/8 + 28/8
=> 94/8 miles = 11 6/8 miles
≅ 12 miles (Estimated)

<u>Solution (part-b)</u>

3 1/4 + 2 1/8 + 2 7/8 + 1 3/4 + 1 3/4
=> 13/4 + 17/8 + 23/8 + 7/4 + 7/4
=> 26/8 + 17/8 + 23/8 + 14/8 + 14/8
=> 66/8 + 2(14/8)
=> 66/8 + 28/8
=> 94/8 miles = 11 6/8 miles (Exactly)

________________________________________________________

Hoped this helped!

PSYCHO15rus [73]2 years ago

3 0

A. Thats up to you. Its an estimate.
B. 11 3/4
C 1/4 more miles
D. 47 miles

WORK

A. None
B. Adding all values together. Its not hard addition
C. 12-11 3/4= 1/4
D. 11 3/4 x 4 = 47

You might be interested in

What value makes the equation true? 2(x-5)=20

SashulF [63]

2(x-5)=20

Divide both sides by 2 (division of property equality)

x - 5 = 10

Add 5 to both sides (addition of property equality)

x = 15

Answer

x = 15 is the solution

6 0

3 years ago

Mrs. Miller claims that 10% of the marbles in the jar are purple. Do the students have statistically significant evidence that t

Keith_Richards [23]

Answer: C: Yes

Step-by-step explanation:

C on edge 2021

4 0

3 years ago

What is the next number after 3 -6 12 4 20

Ede4ka [16]

The sequence is alternatingly decreasing and increasing.
3 - 9 = -6
-6 + 18 = 12
12 - 8 = 4
4 + 16 = 20

Therefore, next term will be:
20 - 7 = 13

3 0

3 years ago

Thickness measurements of ancient prehistoric Native American pot shards discovered in a Hopi village are approximately normally

sasho [114]

Answer:

a) $P(X$

$P(z$

b) $P(X>7.0)=P(\frac{X-\mu}{\sigma}>\frac{7-\mu}{\sigma})=P(Z1.47)$

$P(z>1.47)=1-P(z$

c) $P(3$

$P(-0.882$

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Part a

Let X the random variable that represent the thickness of a population, and for this case we know the distribution for X is given by:

$X \sim N(4.5,1.7)$