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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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31 - 8a = 5 ( - 4 - 5a )

timama [110]

Answer:

Step-by-step explanation:

$31 - 8a = 5(-4 - 5a)$

First, on the right-hand side of the equation, let's distribute the $5$ to each term in the parenthesis:

$31 - 8a = -20 - 25a$

Now, let's move all the terms with an $a$ to the left-hand side, and everything else to the right-hand side of the equation:

$-8a + 25a = -20 - 31$

Let's combine like terms:

$17a = -51$

Finally, let's divide each side by $17$ to get $a$ by itself on the left-hand side of the equation:

$a = -3$

4 0

2 years ago

Antonio invests 3000 at .10 interest compounded semianually for 12 years. Use the compound interest formula to calculate the com

marissa [1.9K]

Answer:

A=9675.299

Step-by-step explanation:

A=p(1+r)^t

A compound amount

P is the principle amount invested

r : rate ( semiannually is 0.5 )

t=years ( semiannually 12*2=24)

A=3000(1+0.10/2)^24

A=9675.299

8 0

3 years ago

Translate the phrase into a math expression. 30 added to a number that is decreased by 5

grin007 [14]

If you want to translate the phrase 30 added to a number that is decreased by 5 into a math expression, you can do it like this:

a number ... n
30 added ... + 30
decreased by 5 ... - 5

Now you just have to put this together: n + 30 - 5 or n - 5 + 30. So, the correct result is a.

3 0

3 years ago

Whats an exponent and how is it used an mathematics

gizmo_the_mogwai [7]

Answer: a quantity representing the power to which a given number or expression is to be raised, usually expressed as a raised symbol beside the number or expression

Step-by-step explanation:

for example

10 x 10 = 100

to simplify this you put a small 2 on the top right corner of the number 10

4 0

3 years ago

Starting at zero, which direction do you move first?

IrinaK [193]

Answer:

Usually to the right (positive). But if it is a negative number then go left first.

Step-by-step explanation:

6 0

2 years ago

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

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