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Mazyrski [523]
3 years ago
14

How can you create a rational number ?

Mathematics
1 answer:
trasher [3.6K]3 years ago
8 0
-- Write a fraction with whole numbers on top and bottom.
or
-- Write down any number, using only digits ... and a fraction bar or decimal point if you need them. If you write down the complete number, it's rational.
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If (-1, y) lies on the graph of y=2^2x then y=
zubka84 [21]

Answer:

y is 1/4 when x is -1 if I did interpret your equation right. Please see that I did.

I believe the equation to be y=2^{2x}.  If you meant y=2^2x, please let me know.

Thanks kindly.

Step-by-step explanation:

If (-1,y) lies on the graph of y=2^{2x}, then by substitution we have:

y=2^{2\cdot -1}.  

We just need to simplify to determine y:

y=2^{2 \cdot -1}  

Multiply the 2 and -1:

y=2^{-2}

Use reciprocal rule for exponents to get rid of the negative:

y=\frac{1}{2^2}

2^2 just means 2(2):

y=\frac{1}{2(2)}

y=\frac{1}{4}.

8 0
3 years ago
Pls help first one gets brainliest (must show work)
worty [1.4K]

Answer:

I got this. Use the order PEMDAS search Up if you don’t know what it means.

Step-by-step explanation:

Start with What’s inside the parentheses

(X - 3) = 3x

(X + 5) = 5x

The divide.

How to divide it - The number coefficients are reduced the same as in simple fractions. When dividing variables, you write the problem as a fraction. Then, using the greatest common factor, you divide the numbers and reduce. You use the rules of exponents to divide variables that are the same — so you subtract the powers.

3 0
3 years ago
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Expand or simplify <br>3c(5+c) -2(3c-7)​
Luden [163]
3c(5+c) -2(3c-7)
15c+3c^2-6c+14
9c+3c^2+14
7 0
3 years ago
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SOMEONE PLEASE HELP ME IM STRESSED OUT I’ll GIVE OUT BRAINLIEST PLEASE DON’T ANSWER IF YOU DON’T KNOW
evablogger [386]

Answer:

Number 7: 40%

Number 8: 75%

Step-by-step explanation: Hope i helped mate

4 0
2 years ago
The formula for a trapezoid relates the area A, the two bases, a and b, and the height, h. A=h ( a+b ) 2 Solve for b.
Lelu [443]
I believe the right equation for determining the area of a trapezoid is as below,
     A = h(a + b)/2

To determine the expression for b which is the length of one of its bases, we multiply the equation by 2.
    
    2A = h(a + b)

Then, divide both sides of the equation by h,

    2A/h = a + b

Then, subtract a from both sides of the equation,
    2A/h - a = b

Lastly, interchange the sides of the equation to reveal the answer.
<em>     </em>
<em>   b = 2A/h - a </em>
5 0
3 years ago
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