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prohojiy [21]
3 years ago
8

PLEASEEE HELPPP MEEE WITH NUMBERSSSS 9 AND 10

Mathematics
1 answer:
ikadub [295]3 years ago
6 0

Answer:

hi dont report me we are friends can i get brainliest plzz?

Step-by-step explanation:

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PLEASE HELP!!!!! <br>What is ​ BC ​?<br><br><br><br> Enter your answer in the box.<br> units
Nonamiya [84]
8x - 4 = 5x + 11 \\ 3x = 15 \\ x = 5

Substitute that into 4x - 2,
4(5) - 2 \\ = 20 - 2 \\ = 18

Answer : BC = 18

Hope this helps. - M
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3 years ago
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Which of the following number is a rational number? Let me know fast plz!!
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All of the following numbers are rational

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4 years ago
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I really need help with this, and also if it's Substitution or linear combination and it will be really helpful if you do step b
Delicious77 [7]

Answer:

-2x+y=12

Step-by-step explanation:

linear equation

5 0
3 years ago
A fair die is rolled once. Let A be the event of rolling an even number, and let B be the event of rolling a number greater than
IRISSAK [1]

Answer:

A ∩ B = {4, 6}

Step-by-step explanation:

A die had 6 faces

S = {1, 2, 3, 4, 5, 6}

If A  be the event of rolling an even number, then;

A = {2, 4, 6}

If B be the event of rolling a number greater than 3, then;

B = {4, 5, 6}

A ∩ B are the values that are common to both sets

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3 0
3 years ago
Assuming that it is known from previous studies that σ = 4.5 grams, how many mice should be included in our sample if we wish to
Yuki888 [10]

Answer:

The required amount of mice is 11.82 gram.

Step-by-step explanation:

Given : Assuming that it is known from previous studies that σ = 4.5 grams. If we wish to be 95% confident that the mean weight of the sample will be within 3 grams of the population mean for all mice subjected to this protein diet.

To find : How many mice should be included in our sample?

Solution :

The formula used in the situation is

z=\frac{x-\mu}{\sigma}

Where, z value at 95% confidence interval is z=1.96

\mu=3 gram is the mean of the population

\sigma=4.5 gram is the standard deviation of the sample

Substituting the value, to find x sample mean

1.96=\frac{x-3}{4.5}

1.96\times 4.5=x-3

8.82=x-3

x=8.82+3

x=11.82

Therefore, The required amount of mice is 11.82 gram.

6 0
4 years ago
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