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Advocard [28]
3 years ago
5

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!40 POINTS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!
Solve for the value of y. (write your answer in the text space as just a number) *

Mathematics
2 answers:
Paul [167]3 years ago
8 0
(5y+3)+(4y+8)=146
9y+11=146
9y=135
y=15
tigry1 [53]3 years ago
5 0

Answer:

15

Step-by-step explanation:

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The table shows the heights that four people parachute from an airplane. What is the range of the heights? Write your answer as
jonny [76]

The answer is 1.55

Explanation:

The he first step to find the range is to make all the values either fractions or decimal/integer numbers. Below I show the process to make all the numbers decimals/integers

Height in miles

2.75: This number is decimal because of this it does not have to be modified

2 \frac{2}{3}: This number includes a rational number and a fraction to make this just one number write the first number as a fraction, multiply, and then divide the top number by the low number (denominator).

\frac{2}{1} ×\frac{2}{3} = \frac{4}{3} = 1.333

\frac{49}{20} : This number is a fraction to simplify it divide the nominator by the denominator:

\frac{49}{20}= 2.45

2 \frac{3}{5}: Write the integer as a fraction and then simplify

\frac{2}{1} ×\frac{3}{5} = \frac{6}{5} = 1.2

Now, from these values, the higher one is 2.75 and the lowest is 1.2, to find the range find the difference between these two numbers 2.75 - 1.2 = 1.55

7 0
3 years ago
Suppose that we will randomly select a sample of 106 measurements from a population having a mean equal to 19 and a standard dev
svet-max [94.6K]

Answer:

z =\frac{18.45-19}{\frac{7}{\sqrt{106}}}= -0.809

And if we use the normal standard distribution or excel we got:

P(z

Step-by-step explanation:

For this case we have the following info given:

\mu = 19 represent the mean

\sigma = 7 represent the standard deviation

n = 106 represent the sample size

The distribution for the sample size if we use the central limit theorem (n>30) is given by:

\bar X \sim N(\mu , \frac{\sigma}{\sqrt{n}})

And for this case we want to find the following probability:

P(\bar X< 18.45)

And for this case we can use the z score formula given by:

z =\frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}

And replacing we got:

z =\frac{18.45-19}{\frac{7}{\sqrt{106}}}= -0.809

And if we use the normal standard distribution or excel we got:

P(z

4 0
3 years ago
Find the missing side of the missing side.<br><br> The length of the missing side is: ?m
WARRIOR [948]
Your answer is 76m.

a^2+b^2=c^2

57^2+b^2=95^2

3249+b^2=9025

b^2=5776

Take sqr on both sides and you get:

b=76m
3 0
3 years ago
G(x)=4x^2+1 <br> What’s the answer
densk [106]
257
explanation 4x4x4x4+1
4 0
3 years ago
Boating: A paddleboat moves at a rate of 12 mph in still water. If the rover’s current moves at a rate of 3 mph, how long will i
Lostsunrise [7]

The time taken by the boat to travel 32 miles downstream is 2.1 hours and for upstream 3.56 hours.

<h3>What is speed?</h3>

Speed is defined as the ratio of the time distance traveled by the body to the time taken by the body to cover the distance.

Given that:-

  • A paddleboat moves at a rate of 12 mph in still water. If the rover’s current moves at a rate of 3 mph.
  • how long will it take the boat to travel 36 miles downstream and 36 miles upstream?

The time taken by the boat upstream will be calculated as:-

( B + W ) Td = D

( 12 + 3 ) Td = 32

( 15 ) Td = 32

Td = 32 / 15 = 2.1 hours

The time taken by the boat downstream will be calculated as:-

( B - W ) Tu = D

( 12 - 3 ) Tu = 32

9 Tu = 32

Tu = 32 / 9 = 3.56 hours.

Therefore the time taken by the boat to travel 32 miles downstream is 2.1 hours and for upstream 3.56 hours.

To know more about Speed follow

brainly.com/question/6504879

#SPJ1

4 0
2 years ago
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