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3 years ago

What is value of expression 3x7+2^3/(3+1)

Mathematics

1 answer:

Goshia [24]3 years ago

5 0

Answer:

The value of the expression is 23.

Step-by-step explanation:

3x7+2^3/(3+1) <----- Here is the original problem.

3x7+2^3/4 <----- Simplify what's in the parentheses.

21+2^3/4 <----- Do your multiplication (in the front)

21+8/4 <----- Simplify the exponent. (2 x 2 x 2 = 8)

21+2 <---- Do the division.

23 <----- Here is the correct answer.

Hope this helps! :D

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Solving Quadratic Equations

NISA [10]

Answer:

a) x= 5 or x= -3

b) x = -4 + $\sqrt{26}$ or -4 - $\sqrt{26}$

Step-by-step explanation:

a) $x^{2}$ - 2x - 15 =0

x = $\frac{-(-2) +\sqrt{(-2)^{2} - 4(1)(-15)}}{2(1)}$ or $\frac{-(-2) -\sqrt{(-2)^{2} - 4(1)(-15)}}{2(1)}$

x= 5 or x=-3

b) $x^{2}$ + 8x - 10 =0

x = $\frac{-(8) +\sqrt{(8)^{2} - 4(1)(-10)}}{2(1)}$ or $\frac{-(8) -\sqrt{(8)^{2} - 4(1)(-10)}}{2(1)}$

x = -4 + $\sqrt{26}$ or -4 - $\sqrt{26}$

7 0

3 years ago

What is the answer to this question?<br> 6x - 6 < 12

rosijanka [135]

Answer:

X<3

Step-by-step explanation:

6x−6+6<12+6

6x<18

Step 2: Divide both sides by 6.

6 divded by 6 = 1

18 divided by 6= 3

therefore the answer would be

X<3

7 0

3 years ago

Read 2 more answers

Hopefully this is enough for the answer

Tomtit [17]

It is the third one.

6 0

4 years ago

If 5 plus 10 equals 21 then minus 1 equivalent to 3 = what?

Bogdan [553]

Is this a joke? I think it’s 6

3 0

3 years ago

Read 2 more answers

P/4+=16<br> Pls show work!!

Dima020 [189]

Answer:

P = 64

Step-by-step explanation:

brainliest question

3 0

3 years ago