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matrenka [14]
3 years ago
7

Please help with these two math problems 1. 7^x ÷ 7^y = 2. z^10x^y ÷ z^5 =

Mathematics
1 answer:
IceJOKER [234]3 years ago
8 0

Answer:

  1.  7^(x-y)

  2. z^5x^y

Step-by-step explanation:

The applicable rule of exponents is ...

  (a^b)/(a^c) = a^(b-c)

__

1.

  \dfrac{7^x}{7^y}=\boxed{7^{x-y}}

__

2.

  \dfrac{z^{10}x^y}{z^5}=x^yz^{10-5}=\boxed{z^5x^y}

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5/2.35 = x/12<br> what does x=
postnew [5]

Answer:

x = \frac{60}{2.35} or x = 25.531...

Step-by-step explanation:

<u>Step 1:  Cross Multiply</u>

<u />\frac{5}{2.35} = \frac{x}{12}

5(12) = 2.35(x)

60 = 2.35x

<u>Step 2:  Divide both sides by 2.35</u>

<u />60 / 2.35 = 2.35x / 2.35

x = \frac{60}{2.35} or x = 25.531...

Answer:  x = \frac{60}{2.35} or x = 25.531...

5 0
3 years ago
Let f(x)=-5x-4 and g(x)=6x-7. find f(x) + g(x)
DIA [1.3K]
F(x) = -5x - 4

g(x) = 6x - 7

f(x) + g(x) = (-5x-4) + (6x-7)

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3 0
3 years ago
Read 2 more answers
Which is least 1.3 1 1/3 or 1.34
Evgesh-ka [11]
1.3 is the least because ur supposed to add a zero so they can all be the same place value
5 0
3 years ago
Please help write the equation of the line.
AfilCa [17]

Answer:

x -2y -2=0

Step-by-step explanation:

using the formula, m= ( Y2 - Y1)/( X2-X1)

the gradient is found. the coordinates chosen are (2,0) and ( 0,-1)

the equation of the line is obtained using the formula

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2 years ago
Brielle and Joshua are running a half marathon race, which is 13.1 miles long. It takes Brielle 10 minutes to run 1.25 miles and
CaHeK987 [17]

Answer: Brielle will run the marathon faster.

Brielle = 104.8 minutes  

Joshua = 157.2 minutes

Step-by-step explanation:

Speed rate = distance /time

Brielle = 1.25 /10 = 0.125 miles per minute

Joshua = 1.5/18 = 0.083333 =1/12 miles per minute

Since 0.125 (Brielle) > 1/12 (Joshua)

Brielle will run the marathon faster.

To calculate the time that takes each one to run the entire race (13.1 miles)

Time= distance / speed

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Feel free to ask for more if needed or if you did not understand something.

8 0
3 years ago
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