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dimulka [17.4K]
3 years ago
9

Giving 30 points to a good explanation/answer.

Mathematics
2 answers:
lys-0071 [83]3 years ago
4 0

Answer:

None of these are correct.

Step-by-step explanation:

Hello there!

If you are asked to multiply two expressions with exponents, add the exponents and place them on top of the original number.

The correct answer is 5^9.

:)

jekas [21]3 years ago
4 0

Answer:

5^{9}

Step-by-step explanation:

Indicie multiplication works by adding the exponent presuming that the base is the same.

4^{7}, 4 is the base and so stays the same, 7 is the exponent.

x^{2}, here the equation is the same as x * x as exponents work by multiplying the base, x, by iteself y times, where y is the exponent and in this case 4.

As we know this, x^{2} * x^{2} can be simplified too x^{4}, which is the same as

x * x * x * x, so we know in such a situation we just add the two exponents together.

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-8(2x +x )/-2y , if x=-5, y=2 and z=0
Masteriza [31]

Answer:

<h3>              -8(2x +x )/-2y  = - 30</h3>

Step-by-step explanation:

x=-5, y=2 and z=0

-8(2x +x )/-2y =(-8•3x)/-2y = [-8•3(-5)] / (-2•2) = 120/(-4) =-30

5 0
3 years ago
Keisha wants to meet for 90 minutes so far she has read 30% of her goal how much longer does she need to read to reach her goal
sladkih [1.3K]

Answer:

30% of 90             

30% x 90              

30/100 =3/10              

3/10 x 90 = 270/10          

270 = 27     

90 - 27 = 63          

Keisha has to read 63 more minutes to reach her goal.



4 0
3 years ago
3/15 + 9/15 + 26/15=
klasskru [66]

Answer:

Mixed number - 2 8/15

decimal - 2.53

Step-by-step explanation:

3+9+26=38

denominator is 15

38/15 convert to a mixed number =

2 8/15  as a decimal is 2.53

4 0
3 years ago
Read 2 more answers
What is the inverse of f(x) = sqft x+ 3
grin007 [14]

Answer:

f^{-1} (x)=x^{2} -3

Step-by-step explanation:

Given the function

f\left(x\right)=\sqrt{x+3}

We can find the inverse function by exchanging x and y, and then solve for y.

y=\sqrt{x+3}

Replace x with y.

x=\sqrt{y+3}

square both sides

x^2=y+3

y=x^2-3

Hence,

f^{-1} (x)=x^{2} -3

8 0
2 years ago
$2.95 notebooks; 5% tax
dimaraw [331]
Turn 5% into a decimal which is 0.05, then multiply by 2.95 = 0.1475
round it off, which is 0.15
so $0.15 is the tax and if ur looking for the total price then add $2.95 to $0.15
7 0
2 years ago
Read 2 more answers
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