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2 years ago

I WILL MARK AS BRAINLIEST! Solve for X and Y

Mathematics

2 answers:

12345 [234]2 years ago

5 0

Answer:

8) a) -22 b) 21 c) 1 d) -35

9) a) 28 b) 59 c) -143 d) -104

The step-by-step solution is attached.

trasher [3.6K]2 years ago

3 0

Answer:

answer in picture. hope it helps

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Ari stocks shelves at a grocery store.He puts 35 cans of juice in each display case.The case has 4 shelves with an equal number

ICE Princess25 [194]

Answer:

There are 8 cans on each of the equal shelves

Step-by-step explanation:

Total number of cans put in display = 35

Shelves with equal no of cans = 4 Shelves

And one shelf displays only 3 cans

Therefore, 4 shelves with equal no of cans + 1 shelf with 3 cans = 35 cans

Let us assume equal no. of cans be x

We get, 4x + 3 = 35

4x = 35 - 3

4x = 32

x = 32 ÷ 4

x = 8

<u><em>Thus, 4 shelves with equal no of cans contains 8 cans each.</em></u>

6 0

2 years ago

Match the polygons formed by the sets of points with their perimeters ( rounded to the nearest hundredth). Please Help me I don'

MissTica

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25.4 units-P(7,2), Q (12,2), R(12,6), S(7,10), T(4,6)

50 units-A( 1, 1), B(6,13), C(8,13), D(16,-2) E(1, -2 )

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6 0

3 years ago

Read 2 more answers

We wish to give a 90% confidence interval for the mean value of a normally distributed random variable. We obtain a simple rando

coldgirl [10]

Answer: $(9.27025,\ 11.12975)$

Step-by-step explanation:

Given : Sample size : n= 9

Degree of freedom = df =n-1 =8

Sample mean : $\overline{x}=10.2$

sample standard deviation : $s= 1.5$

Significance level ; $\alpha= 1-0.90=0.10$

Since population standard deviation is not given , so we use t- test.

Using t-distribution table , we have

Critical value = $t_{\alpha/2, df}=t_{0.05 , 8}=1.8595$

Confidence interval for the population mean :

$\overline{x}\pm t_{\alpha/2, df}\dfrac{s}{\sqrt{n}}$

90% confidence interval for the mean value will be :

$10.2\pm (1.8595)\dfrac{1.5}{\sqrt{9}}$

$10.2\pm (1.8595)\dfrac{1.5}{3}$

$10.2\pm (1.8595)(0.5)$

$10.2\pm (0.92975)$

$(10.2-0.92975,\ 10.2+0.92975)$

$(9.27025,\ 11.12975)$

Hence, the 90% confidence interval for the mean value= $(9.27025,\ 11.12975)$

6 0

2 years ago

suppose a compact car uses 1 gallon of fuel for every 27 miles traveled. how would the graph for the compact car compare to the

VikaD [51]

We dont have enough information to answer the question i need the picture to compare my answer to bc (im assuming) its asking to compare how much gas the car in the equation uses vs the one in the graph

4 0

3 years ago

How can graphing an inequality help to solve it

erma4kov [3.2K]

Answer:

It helps you see the equation in "picture" form.

Step-by-step explanation:

When you see the inequality in a graph form, most people can benefit from seeing a different version of the same problem.

4 0

2 years ago