10f – 6 – 10f = -8(-2f - 10) + 10

Mathematics

1 answer:

netineya [11]2 years ago

8 0

Answer:

f= -6 i think

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A bag contains yellow marbles in red marbles 65 in total. The number of yellow marbles is five more than four times the number o

antoniya [11.8K]

Answer: there would be 52 yellow marbles

Step-by-step explanation:

Ok we know that there is 65 marbles in total? Right? So then we’d take 65 and think, what could we divide this by and start guessing and estimating numbers. (I guessed 5, one because it’s divisible by 65, two there is 5 times more yellow marbles than red marbles.) So 5 divided by 65 is 13. But, in order to find the amount of yellow marbles, we need to subtract the whole number by the amount of red marbles. (So 65-13 =?) if you subtract that you get 52 yellow marbles. :)

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3 years ago

Why does the fact family for 81 and 9 have only two number sentences

Julli [10]

It only has two number sentences because 81 divided by anything else wont work only 9 would. Also since 9 times 9 is equal to 81

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3 years ago

Read 2 more answers

Can someone explain how to do this?

Tems11 [23]

x+7
------------------- =
x^2+4x -21

x+7
= -------------------
   (x+7)(x-3)

1
= ----------  where x is not equal -7 and 3
   x - 3

answer is A. first choice

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3 years ago

A state offers two lottery games, WinOne and PlayBall. Both games cost $2 per ticket.

uysha [10]

In this question, both tickets cost 2$ per ticket.
The answer to this question would be: $0

In WinOne scenario, you need to match a ticket that has to pick from A-J(10 possibilities) and 0-9 (10 possibilities). The chance to win would be: 1/10* 1/10= 1/100

The expected value must be:
E= chance to win * win amount - ticket price
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3 years ago

A standard dartboard has a diameter of 18 in. What is its area to the nearest square inch?

Reptile [31]

The meaning of the area is the measurement of a surface in this case a circle, which can be find by using the formula $A= \pi r^{2}$ , where r is equal to the radius of the circle.

In this exercise is given that the diameter of a standard cardboard is 18 inches or a radius of 9 inches and it is asked to find its area. Therefore, to find the area of the circle you should substitute the value of the radius into the previous mention formula.

$A= \pi r^{2}$
$A= \pi (9 in)^{2}$
$A= \pi (81 in^{2})$
$A=254.47 in^{2}$

The area of the standard dartboard is 254.47 square inches or 254 square inches.

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3 years ago