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3 years ago

Find Ma)21b)32c)40d)63Step by step please

Mathematics

2 answers:

Black_prince [1.1K]3 years ago

6 0

M is a. 21..........

lina2011 [118]3 years ago

5 0

Answer:

a) 21

Step-by-step explanation:

If the columns are labeled a, b, c, d left to right, it appears that we have ...

$\sqrt{a}\times(b-c)=d\\\\\sqrt{49}\times(10-7)=21$

The value of M is 21.

_____

Questions like this require that you try different combinations of operations on the numbers shown to see if you can find a relationship. Here, the left column is a perfect square, so that is a clue. The difference of the numbers in the middle columns is a factor of the number in the right column -- another clue. It takes a certain amount of creative thought and familiarity with arithmetic facts. There is no "step-by-step" for a problem like this.

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olganol [36]

Answer:

Look below in the Explanation.

Step-by-step explanation:

A. Greater than one

B. Greater than One

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6 0

4 years ago

For the relation {(6, 4), (4, 2), (2, 0), (x,-2)} to be a function, x can be which value?

sveta [45]

Answer:

x can only be 0

Step-by-step explanation:

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3 years ago

A survey among freshman at a certain university revealed that the number of hours spent studying before final exams was normally

patriot [66]

Answer: 0.0775

Step-by-step explanation:

Given : Mean : $\mu = 25$

Standard deviation : $\sigma =15$

Sample size : $n=36$

Since its normal distribution , then the formula to calculate the z-score is given by :-

$z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}$

For x= 28.2 hours

$z=\dfrac{28.2-25}{\dfrac{15}{\sqrt{36}}}=1.28$

For x= 30 hours

$z=\dfrac{30-25}{\dfrac{15}{\sqrt{36}}}=2$

The P- value = $P(1.28$

$=P(z$

Hence, the probabiliy that the average time spent stydying for the sampe was between 28.2 and 30 hours = 0.0775

6 0

3 years ago

Mrs. Powell has $800 invested in stocks and $500 invested in a Certificate of Deposit. The CD has an interest rate twice as grea

Mashutka [201]

Let's use the variable "r" to represent the investment rate of the stocks:
2r(500) + r(800) = 45
1000r + 800r = 45
1800r = 45
r = 0.025
2r = 0.05
The $500 is invested at 5%

7 0

4 years ago

Read 2 more answers

Anthony is a high school basketball player. How many points would Anthony score in a game if he made 8 three point shots and 2 t

mariarad [96]

Answer:

Step-by-step explanation:

x three point shots: 8*3=24

x two point shots: 2*2=4

The point would Anthony score is : 24+4=28

I hope it'll help you much

Thank you for asking

4 0

4 years ago

Find Ma)21b)32c)40d)63Step by step please​

Find Ma)21b)32c)40d)63Step by step please