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Aleonysh [2.5K]
3 years ago
12

Multiply c by 9, then add 2 to the result

Mathematics
1 answer:
Novosadov [1.4K]3 years ago
6 0

Answer:

9c+2

Step-by-step explanation:

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Substitute the given values into the formula and solve for the unknown variable. If necessary, round to one decimal place
Stells [14]

Answer:

4=H

Step-by-step explanation:

H is unknown

180=4x7x5+2x5xH

180=140+10H

40=10H

4=H

7 0
3 years ago
Let a be a rational number and b be an irrational number. Which of the following are true statements?(there is more than 1 answe
kramer
<span>A.) the sum of a and b is never rational.
This is a true statement. Since an irrational umber has a decimal part that is infinite and non-periodical, when you add a rational number to an irrational number, the result will have the same infinite non periodical decimal part, so the new number will be irrational as well.

</span><span>B.) The product of a and b is rational
This one is false. Zero is a rational number, and when you multiply an irrational number by zero, the result is always zero.

</span><span>C.) b^2 is sometimes rational
This one is true. When you square an irrational number that comes from a square root like </span>\sqrt{2}, you will end with a rational number: ( \sqrt{2} )^{2}=2, but, if you square rationals from different roots than square root like \sqrt[3]{2}, you will end with an irrational number: \sqrt[3]{2^{2} } = \sqrt[3]{2}. 

<span>D.) a^2 is always rational
This one is false. If you square a rational number, you will always end with another rational number.

</span><span>E.) square root of a is never rational
</span>This one is false. The square root of perfect squares are always rational numbers: \sqrt{64} =8, \sqrt{16} =4,...

F.) square root of b is never rational
This one is true. Since the square root of any non-perfect square number is irrational, and all the irrational numbers are non-perfect squares, the square root of an irrational number is always irrational.

We can conclude that given that<span> a is a rational number and b be an irrational number, A, C, D, and F are true statements.</span>
4 0
3 years ago
How do I know whether something is a function or not? Answer the worksheet please
djyliett [7]
Because you if it changes its a function
6 0
3 years ago
At the park, 4/7 of the children are boys. if there are 8 boys at the park, how many are girls?
Oksana_A [137]
There are 4/7 boys, so there are 3/7 girls.

Let the total number of children be x.

4/7x = 8
1/7x = 8 ÷ 4
1/7x = 2
3/7x = 2 x 3
3/7x = 6

There are 6 girls.
4 0
3 years ago
Read 2 more answers
Please help!!!!!!!!!
astra-53 [7]

Answer:

first one

Step-by-step explanation:

5 0
3 years ago
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