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2 years ago

1 1/2x4 1/4 solve problem in simplest form

Mathematics

1 answer:

olganol [36]2 years ago

8 0

Answer:

6 3/8

Step-by-step explanation:

1.5x4.25=6.375=51/8= 6 3/8

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Use percents to compare attendance at two concerts: 299 people attended the first concert, while 949 attended the second. pls he

Lisa [10]

At the second concert, there were 217% more people than in the first concert.

<h3>What are percentages?</h3>

Percentage can be described as a fraction out of an amount that is usually expressed as a number out of hundred. The sign used to represent percentages is %.

<h3>What is the comparison between the two concerts?</h3>

Number of people who attended the second concert compared to the first concert = (949/299) - 1 x 100 = 217%

To learn more about percentages, please check: brainly.com/question/25764815

8 0

3 years ago

Jenna has bought a new hybrid car. Each week for a period of seven weeks, she has noted the fuel efficiency (in miles per gallon

Leviafan [203]

Answer: 0.82 miles per gallon

Step-by-step explanation:

Given : Jenna has bought a new hybrid car. Each week for a period of seven weeks, she has noted the fuel efficiency (x) (in miles per gallon) of her car.

The results are :45 44 43 44 45 44 43

The formula to find the standard deviation is given by :-

$\sigma=\sqrt{\dfrac{\sum_{i=1}^n(x_i-\overline{x})^2}{n-1}}$

First we find mean of the given data ,

$\overline{x}=\dfrac{\sum^n_{i=1}x_i}{n}\\\\=\dfrac{45+44+43+44+45+44+43}{7}=\dfrac{308}{7}=44$

Now,

${\sum_{i=1}^n(x_i-\overline{x})^2=(1)^2+(0)^2+(-1)^2+(0)^2+(1)^2+(0)^2+(-1)^2$

$=1+1+1+1=4$

Now, standard deviation of the above results will be :-

$\sigma=\sqrt{\dfrac{4}{7-1}}\\\\=\sqrt{\dfrac{4}{6}}\\\\=\dfrac{2}{\sqrt{3}}=0.816496580928\approx0.82$

Hence, the standard deviation of these results = 0.82 miles per gallon

8 0

4 years ago

PLEASE HELP ME I WILL GIVE 20 POINTS PLEASEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE I forgot how to do this stuff

VikaD [51]

Answer:

Step-by-step explanation:

Angles on a straight line sum to 180

65+35=100

180-100=80

angle r=80

6 0

3 years ago

Read 2 more answers

A tangent and a secant x = ?

guajiro [1.7K]

x = 45°

Solution:

Given data:

Measure of larger arc = 152°

Measure of smaller arc = 62°

<em>If a tangent and a secant intersect at the exterior of a circle then the measure of angle formed is one-half the positive difference of the measures of the intercepted arcs.</em>

$$\Rightarrow x = \frac{1}{2}(\text{ larger arc }- \text{smaller arc} )$