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3 years ago

Write an equation describing the sum of the two number, x and y x+y+10

2 answers:

7 0

I suppose the sum is 10?

Well if that's the case:

x = 5

y = 5

I am not sure what the sum is because you did not give it.

Doss [256]3 years ago

3 0

If the sum is 10, then here's an example:

X = 6
Y = 4

it's just basically anything that adds up to 10.

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Which of the following equations would graph a line parallel to 3Y= X +5

EastWind [94]

I don't know this one am not good a this

7 0

3 years ago

A university researcher wants to estimate the mean number of novels that seniors read during their time in college. An exit surv

lys-0071 [83]

Answer:

Population mean = 7 ± 2.306 × $\frac{2.29}{\sqrt{9} }$

Step-by-step explanation:

Given - A university researcher wants to estimate the mean number

of novels that seniors read during their time in college. An exit

survey was conducted with a random sample of 9 seniors. The

sample mean was 7 novels with standard deviation 2.29 novels.

To find - Assuming that all conditions for conducting inference have

been met, which of the following is a 94.645% confidence

interval for the population mean number of novels read by

all seniors?

Proof -

Given that,

Mean ,x⁻ = 7

Standard deviation, s = 2.29

Size, n = 9

Now,

Degrees of freedom = df

= n - 1

= 9 - 1

= 8

⇒Degrees of freedom = 8

Now,

At 94.645% confidence level

α = 1 - 94.645%

=1 - 0.94645

=0.05355 ≈ 0.05

⇒α = 0.5

Now,

$\frac{\alpha}{2} = \frac{0.05}{2}$

= 0.025

Then,

$t_{\frac{\alpha}{2}, df }$ = 2.306

∴ we get

Population mean = x⁻ ± $t_{\frac{\alpha}{2}, df }$ × $\frac{s}{\sqrt{n} }$

= 7 ± 2.306 × $\frac{2.29}{\sqrt{9} }$

⇒Population mean = 7 ± 2.306 × $\frac{2.29}{\sqrt{9} }$

3 0

3 years ago

Read 2 more answers

when adding two rational numbers tell what the sign of the sum will be if both rational numbers are positive

erastova [34]

Answer:

When adding two negative integers you'll get a sum that's negative. -When adding one integer that's negative and one that's positive the sum will depends on how large the absolute value is for the two integers to tell if the answer will be positive or negative.

Step-by-step explanation:

Brainliest plss qwq

3 0

3 years ago

True or False? A circle could be circumscribed about the quadrilateral below.

BlackZzzverrR [31]

Answer: false

Step-by-step explanation: the answer is false because suplimentary angled dont add up to 180

3 0

3 years ago

Read 2 more answers

Shelly and her family are riding the Pikes Peak Cog Railway. The table shows the approximate distances the train has covered at

irga5000 [103]

Relationship between distance and time is A. d = 0.12m

Step-by-step explanation:

For an object moving in uniform motion (=constant velocity), the relationship between distance covered and time taken is given by

$d=vt$

where

d is the distance

v is the velocity

t is the time

Therefore, in order to find the relationship between distance and time, we have to find the velocity of the train.

This can be done by using the data of the table: in fact, the velocity is the ratio between the distance covered and the time taken to cover that distance.

Therefore, if we take for instance the last point of the table:

d = 2.4 miles (distance covered)

t = 20 minutes (time taken)

So the velocity is

$v=\frac{d}{t}=\frac{2.4}{20}=0.12 mi/min$