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2 years ago

Theses are SOOOOO difficult 10 points if right

Mathematics

2 answers:

babymother [125]2 years ago

8 0

This is it hope it helps

Alex Ar [27]2 years ago

5 0

Graph it like this:

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The sum of the measures of angle A and angle B is 180 degrees. The measure of angle A is (4x + 12) The measure of angle B is 60

BARSIC [14]

Answer:

Rolf prepares four solutions using different solutes as shown in the table be❤️low.

Which solution is unsaturated?

Solution A

Solution B

Solution C

Solution D

Step-by-step explanation:

5 0

2 years ago

3 erasers cost$4.41 which equation would help determine the cost of 4 erasers is it A , B,C,D,E ?

FrozenT [24]

Answer: I think the answer is D not sure tho

Step-by-step explanation:

4 and 3 are on the top because they show quantity. And x and $4.41 is on the bottom that is the cost for 3 erasers and x for finding how much 4 erasers cost.

8 0

3 years ago

The weights of adult male birds of a certain species are normally distributed with a mean of 27.5 grams and a standard deviation

Korvikt [17]

Answer:

The z-score of a male bird of this species with a weight of 29.37 grams is 1.7.

Step-by-step explanation:

We are given that the weights of adult male birds of a certain species are normally distributed with a mean of 27.5 grams and a standard deviation of 1.1 grams.

Let X = weights of adult male birds of a certain species

So, X ~ Normal( $\mu=27.5,\sigma^{2} =1.1^{2}$ )

The z score probability distribution for normal distribution is given by;

Z = $\frac{ X-\mu}{\sigma } }$ ~ N(0,1)

where, $\mu$ = population mean weight = 27.5 grams

$\sigma$ = standard deviation = 1.1 grams

The Z-score measures how many standard deviations the measure is away from the mean. After finding the Z-score, we look at the z-score table and find the p-value (area) associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X.

SO, the z-score of a male bird of this species with a weight of 29.37 grams is given by;

Z score = $\frac{ X-\mu}{\sigma } }$ = $\frac{ 29.37-27.5}{1.1 } }$

= 1.7

4 0

2 years ago

Anais a math tracher noticed that the average grade on an exam, G, given that n students watch the related video can be given by

Ket [755]

This is what I got for the answer tell me if I’m wrong

6 0

3 years ago

Read 2 more answers

Helen got a $7 reduction in the price of pair of jeans that are normally $32. What is the aproximate percent decrease In The pri

hjlf

$ 7 dollar reduction....that means new price is (32 - 7) = 25

percent decrease = (original number - new number) / original number..* 100
(32 - 25) / 25....* 100
7/25 * 100
0.28 * 100
28% decrease <==

6 0

3 years ago