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Kryger [21]
3 years ago
7

Alexis is trying to run a certain number of miles by the end

Mathematics
1 answer:
LuckyWell [14K]3 years ago
3 0

Answer:

30 miles

Step-by-step explanation:

12 is to 40 as X is to 100

So 40X=12X100

     40X=1200

Divide 40 from both sides

       X=30

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3.xºy+ 9. Simplify<br>(please help bro +[ )​
Mazyrski [523]

Answer:

{x}^{0} y + 9 \\  = y + 9

4 0
3 years ago
H(x)=5/sqrt(2x+10), find the domain using set builder notation.
marissa [1.9K]

The given expression is

h(x) = \frac{5}{\sqrt{2x+10}}

THe given expression is a rational expression, and rational expression should not have 0 in the denominator.

Moreover, the denominator is a square root term, and square root don't have a value for negative number .

Therefore 2x+10 must be greater then 0. That is

2x+10>0&#10;\\&#10;2x>-10&#10;\\&#10;x>-5

Therefore the required domain in set builder form is

{x | x>-5}

4 0
4 years ago
Solve 2(x+5)=18+xanswer?!
likoan [24]

Answer:

x=4

Step-by-step explanation:

1. Divide both sides of the equation by 2

x+5=9

2. Move the constant to the right -hand side and change its sign

x=9-5

3. Subtract the numbers

x=4

3 0
3 years ago
Read 2 more answers
(20,8),(9,16) I need help with this slope from two point
Assoli18 [71]
Slope = -8/11
-8
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11
7 0
3 years ago
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A 25-foot ladder leans against a wall. The base of the ladder is 15 feet from the bottom of the wall. How far up the wall does t
motikmotik

Answer: 20 feet.

Step-by-step explanation:

Observe the right triangle attached.

You need to find the value of "x".

Then, you can use the Pythagorean Theorem:

a^2=b^2+c^2

Where "a" is the hypotenuse of the triangle, and "b" and "c" are the legs.

 In this case, you can identify that:

a=25ft\\b=15ft\\c=x

Substitute these values into  a^2=b^2+c^2:

 (25ft)^2=(15ft)^2+x^2

Now, you need to solve for x to find how far up the wall the top of the ladder reaches. Then you get:

x^2=(25ft)^2-(15ft)^2

x=\sqrt{(25ft)^2-(15ft)^2}

x=20ft

3 0
4 years ago
Read 2 more answers
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