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3 years ago

Simplify to lowest form. a. 1/2 + 3/2 = ? b. 2/5 + 3/5 = ?

Mathematics

2 answers:

Lilit [14]3 years ago

8 0

Answer:

A= 2 B= 1

Step-by-step explanation:

1/2 +3/2= 4/2 than divide 4/2 by 2 it will give you 2/1 so 2/1 equal 2 because 2 is bigger than 1

2/5 + 3/5 = 5/5 it is 1 because if you divide it by 5 you will get a whole number which is 1

forsale [732]3 years ago

6 0

For letter the answer is 2

for letter b the answer is 1

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Given that f(x) = 7x^2 − 84 = 0, find x.

jasenka [17]

Answer:

x = 3.464

Step-by-step explanation:

7x^2 - 84 = 0

7x^2 = 84

x^2 = 12

x= 3.464

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3 years ago

Arborists use the diameter of a tree trunk to predict the age of a tree. The following computer output and residual plot

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3 years ago

Exponential form of 81/625

Vesnalui [34]

Step-by-step explanation:

Hey, there!!

you number is: 81/625

We know that,

81=9×9

and

625=25×25

and............................................................

9×9 means 9^2

and 25×25 means 25^2

so, the exponential form of the question is,

= $\frac{ {9}^{2} }{ {25}^{2} }$

{we simply find exponential form by finding their fraction}

Hope it helps...

4 0

3 years ago

Rezolvati 1) -2x+1= -7 2) 6+3x= -54+x 3) 2x+9= 7 +x 4) 3-2x= -x -6 5) -3(x+1) = -6 6) -4 (x -2)=12 7) -7(x-3)= -14

Natalija [7]

Răspunsurile sunt

1. x= 4
2. x = -30
3. x = -2
4. x = 9
5. x = 1
6. x = -1
7. x = 5

3 0

3 years ago

Find the sum of the constants a, h, and k such that

ra1l [238]

Answer:

Step-by-step explanation:

The value of "a" is the coefficient of x^2, so we know that is 2.

Solve for h

Now, we have ...

2x^2 -8x +7 = 2(x -h)^2 +k

Expanding the right side gives us ...

= 2(x^2 -2hx +h^2) +k

= 2x^2 -4hx +2h^2 +k

Comparing x-terms, we see ...

-4hx = -8x

h = (-8x)/(-4x) = 2

Solve for k

Now, we're left with ...

2h^2 +k = 7 = 2(2^2) +k = 8 +k

Subtracting 8 we find k to be ...

k = 7 -8 = -1

And the sum of constants a, h, and k is ...

a +h +k = 2 +2 -1 = 3

The sum of the constants is 3.

6 0

3 years ago