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KengaRu [80]
2 years ago
13

2 MIDDLE SCHOOL QUESTIONS

Mathematics
2 answers:
Furkat [3]2 years ago
7 0
They should both be answer c
vredina [299]2 years ago
3 0

Answer:

The answer to number 1 is c the answer to number 2 is c

Step-by-step explanation:

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cornerstore bakery sold 78 pies on monday, 96 pies on thursday, 40 pies on wednesday,104 pies thursday, and 77 pies on friday. o
lapo4ka [179]

the average of the pies they sold is 79 pies

3 0
3 years ago
Read 2 more answers
Help please is this right if not help with answers
wlad13 [49]

Answer:

3/8 + 1/4 < 1

Check: Find common denominators, what you do to the denominator, you do to the numerator. Multiply 2 to both the top and bottom of the fraction:

(1/4)(2/2) = 2/8

3/8 + 2/8 < 1

5/8 < 1

5/8 < 8/8 (True).

Any fraction works in the second one, for regardless, you will get less than a whole number, so solve the third one first.

The 2 fractions needed will have to be greater than 1. 1/4 has already been used, so find two pairs of fractions that will, when added, be greater than 1.

(7/8 + 3/4)

Find common denominators, what you do to the denominator, you must do to the numerator:

(7/8)(2/2) + (3/4)(4/4) = (14/16) + (12/16) = 26/16

26/16 > 1 (True).

Finally, the last one will be 2/3.

2/3 - 1/8 < 1

Find common denominators, what you do to the denominator, you must do to the numerator:

(2/3)(8/8) - (1/8)(3/3) < 1

16/24 - 3/24 < 1

13/24 < 1 (True).

~

7 0
3 years ago
A cone and its dimensions are shown in the diagram . What is the volume of the cone in cubic inches? 7 1/2 in for height and 5 5
Gennadij [26K]

Answer:14.0625

Step-by-step explanation:volume of a Cone =1/3bh

1/3*71/2*5 5/8

15*15/16

14.0625

4 0
3 years ago
The data given to the right includes data from ​candies, and of them are red. The company that makes the candy claims that ​% of
Dafna1 [17]

Using the z-distribution, the 95% confidence interval for the percentage of red candies is of (7.84%, 33.18%). Since 33% is part of the interval, there is not enough evidence to conclude that the claim is wrong.

<h3>What is a confidence interval of proportions?</h3>

A confidence interval of proportions is given by:

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which:

  • \pi is the sample proportion.
  • z is the critical value.
  • n is the sample size.

In this problem, we have a 95% confidence level, hence\alpha = 0.95, z is the value of Z that has a p-value of \frac{1+0.95}{2} = 0.975, so the critical value is z = 1.96.

Researching this problem on the internet, 8 out of 39 candies are red, hence the sample size and the estimate are given by:

n = 39, \pi = \frac{8}{39} = 0.2051

Hence the bounds of the interval are:

  • \pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.2051 - 1.96\sqrt{\frac{0.2051(0.7949)}{39}} = 0.0784
  • \pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.2051 + 1.96\sqrt{\frac{0.2051(0.7949)}{39}} = 0.3318

As a percentage, the 95% confidence interval for the percentage of red candies is of (7.84%, 33.18%). Since 33% is part of the interval, there is not enough evidence to conclude that the claim is wrong.

More can be learned about the z-distribution at brainly.com/question/25890103

#SPJ1

7 0
2 years ago
The product of 4 and a number ,increased by 22 is 146. What is the number ?
maks197457 [2]
Not absolutely sure I understand the question, but should be 120
7 0
3 years ago
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