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Alinara [238K]
3 years ago
12

Jordan paid $11.20 for 5 pears and 6 peaches. The cost of 3 pears is as much as 2 peaches.

Mathematics
1 answer:
Brrunno [24]3 years ago
7 0
B)find the cost of a peach
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Employees from A and company B receive annual bonuses. What information would you need to test the claim that the difference in
lyudmila [28]

Answer:

1. The required information are

The average annual bonuses, \bar {x}_1 received by employees from company A

The average annual bonuses, \bar {x}_2 received by employees from company B

The standard deviation, σ₁, of the average annual bonuses for employees from company A

The standard deviation, σ₂, of the average annual bonuses for employees from company A

The number of employees in company A, n₁

The number of employees in company B, n₂

2. The null hypothesis is H₀: \bar {x}_1 - \bar {x}_2 ≤ 100

The alternative hypothesis is Hₐ: \bar {x}_1 - \bar {x}_2 > 100

Step-by-step explanation:

1. The required information are

The average annual bonuses, \bar {x}_1 received by employees from company A

The average annual bonuses, \bar {x}_2 received by employees from company B

The standard deviation, σ₁, of the average annual bonuses for employees from company A

The standard deviation, σ₂, of the average annual bonuses for employees from company A

The number of employees in company A, n₁

The number of employees in company B, n₂

2. The null hypothesis is H₀: \bar {x}_1 - \bar {x}_2 ≤ 100

The alternative hypothesis is Hₐ: \bar {x}_1 - \bar {x}_2 > 100

The z value for the hypothesis testing of the difference between two means is given as follows;

z=\dfrac{(\bar{x}_{1}-\bar{x}_{2})}{\sqrt{\frac{\sigma_{1}^{2} }{n_{1}}-\frac{\sigma _{2}^{2}}{n_{2}}}}

At 0.5 level of significance, the critical z_\alpha = ± 0

The rejection region is z > z_\alpha and z < -z_\alpha

Therefore, the value of z obtained from the relation above more than or less than 0, we reject the null hypothesis, and we fail to reject the alternative hypothesis.

7 0
3 years ago
What is the value of z which makes the expression x2 - 16x + x equivalent to ( x- 8 ) 2
diamong [38]

Answer:

x=64

Step-by-step explanation:

* change equivalent to to = *

now we have x² - 16x + x = (x-8)²

step 1 simplify both sides

(x)²=x²

-8x*2=16x

8=64

-16x + x = 15x

now we have x² -15x = x² - 16x + 64

step 2 subtract x² from each side

x² -x² = 0

x² - x² cancels out

now we have -15x = -16x + 64

step 3 add 16x to each side

-15x + 16x = x

-16x + 16x cancels out

we're left with x = 64

7 0
3 years ago
How to do this question
lyudmila [28]
I don’t know but have a good day
7 0
2 years ago
Read 2 more answers
A
Musya8 [376]

Answer:

y = -4x - 16 or y +4x + 16 = 0

Step-by-step explanation:

Gradient (m) = -4

Equation of a line given gradient and one point=

y - <em>y </em>= m(x - <em>x)</em><em> </em>where (<em>x </em>, <em>y </em>) are the coordinates of the point.

Substituting...

y -(-4) = -4(x -(-3))

y + 4 = -4(x + 3)

y + 4 = -4x - 12

y = -4x - 12 - 4

y = -4x - 16 or y +4x + 16 = 0

6 0
3 years ago
What type of angles are these TWO angles?
Komok [63]

Answer:

linear pair.

Step-by-step explanation:

i know this because the angles are slightly. tilted unlike complementary and vertical angles.

hope this helps.

3 0
3 years ago
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