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2 years ago

Seth bakes 100 cookies in 2 hours. Erika bakes 200 cookies in 2.5 hours.

Mathematics

2 answers:

kakasveta [241]2 years ago

8 0

I think the answer is A.

Write the rate at which each person is baking cookies

lana [24]2 years ago

7 0

A: 50 cookies an hour (seth) 80 cookies an hour (erika)
b: 50:1 80:1
c: Seth, he bakes more in an hour

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PLSSS HELP PLS I WILL GIVE BRAINLIEST TO CORRECT PERSON!! 13 POINTS. Camille dilates a digital photograph by a factor of 1.25 to

siniylev [52]

Answer:

the first one is A, the second one is D.

Step-by-step explanation:

For the perimeter you have to multiply by the original dilation number, and for the area, you have to dilate by 2.5

Hope this helps :D

8 0

2 years ago

A Roper survey reported that 65 out of 500 women ages 18-29 said that they had the most say when purchasing a computer; a sample

8090 [49]

Answer:

Step-by-step explanation:

Step(i):-

Given first random sample size n₁ = 500

Given Roper survey reported that 65 out of 500 women ages 18-29 said that they had the most say when purchasing a computer.

First sample proportion

$p^{-} _{1} = \frac{65}{500} = 0.13$

Given second sample size n₂ = 700

Given a sample of 700 men (unrelated to the women) ages 18-29 found that 133 men said that they had the most say when purchasing a computer.

second sample proportion

$p^{-} _{2} = \frac{133}{700} = 0.19$

Level of significance = α = 0.05

critical value = 1.96

Step(ii):-

Null hypothesis : H₀: There is no significance difference between these proportions

Alternative Hypothesis :H₁: There is significance difference between these proportions

Test statistic

$Z = \frac{p_{1} ^{-}-p^{-} _{2} }{\sqrt{PQ(\frac{1}{n_{1} } +\frac{1}{n_{2} } )} }$

where

$P = \frac{n_{1} p^{-} _{1}+n_{2} p^{-} _{2} }{n_{1}+ n_{2} } = \frac{500 X 0.13+700 X0.19 }{500 + 700 } = 0.165$

Q = 1 - P = 1 - 0.165 = 0.835

$Z = \frac{0.13-0.19 }{\sqrt{0.165 X0.835(\frac{1}{500 } +\frac{1}{700 } )} }$

Z = -2.76

|Z| = |-2.76| = 2.76 > 1.96 at 0.05 level of significance

Null hypothesis is rejected at 0.05 level of significance

Alternative hypothesis is accepted at 0.05 level of significance

Conclusion:-

There is there is a difference between these proportions at α = 0.05

3 0

2 years ago

Complete the following multiplication exercises.

olga2289 [7]

43x7=301
12x9=108
10x6=60
9x7=63
7x5=35
6x3=18
0x8=8
30x3=90
11x8=88
73x2=219
83x5=415
16x8=128
392x7=2,744
29x4=116
761x9=6,849
4,829x6=28,974
12x7=84
25,500x4=102,000

4 0

2 years ago

Read 2 more answers

Harold measures the heights in inches of the new plants that are growing in his greenhouse. He records the lengths shown below a

viva [34]

Answer:

The least value plotted on the line plot is 18.0

The greatest value plotted on the line plot is 22.0

The height of inches occurs the most often is 19.5 with 3 times

Step-by-step explanation:

A line plot is a graph that shows frequency (the number of times the data value occur) of data along a number line.

The line plot has dots plotted on it over each value of the number line.

8 0

2 years ago

A ketchup company regularly receives large shipments of tomatoes. For each shipment that is received, a supervisor takes a rando

fredd [130]

Answer:

$H_o:p=0.1\\\\H_a:p\neq 0.1$

Step-by-step explanation:

-A hypothesis is a claim of evidence and is used in making statistical decisions during experiments/ research.

-Given that 10% of the entire shipment is bruised.

-the null hypothesis states that the proportion is equal to the stated value:

$H_o:p=0.1$

-The alternative states that the null hypothesis is not correct:

$H_a:p\neq 0.1$

8 0

2 years ago