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Arturiano [62]
4 years ago
9

How do I solve this

Mathematics
2 answers:
bonufazy [111]4 years ago
8 0
If ABC is ~ to DEF then
AB is ~ to DE
35~x and
BC is ~ to EF
30~15
30/2= 15 So 35/2= 17.5
svet-max [94.6K]4 years ago
5 0
Both triangles are similar because of angle angle similarity.

So you can just make a proportion.

\frac{CB}{BA} = \frac{FE}{x}

Insert the numbers:
\frac{30}{35} =  \frac{15}{x}

Cross multiply: 30x = 520
x = 17.5
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Factor completely x2 + 20x − 36.
Zielflug [23.3K]

Answer:

Step-by-step explanation:

To do this, identify a, b, and c of the quadratic.

a = 1, b = 20, c = |-36|

Find a*c.  That's 36.  Now find the factors of 36 and the 2 factors that can combine to give you b, which is 20, are the ones we want.

36: 1, 36

     2, 18

     3, 12

     4, 9

      6, 6

The ones that combine to give you 20 are 2, 18.  Both positive.  Therefore,

x^2+18x+2x-36 is how you begin to factor.  Factoring by grouping is the way to go.

(x^2+18x)+(2x-36)

Factor out what you can from each set of parenthesis:

x(x + 18) + 2(x + 18)

What's common now is what's inside the parenthesis, so that gets factored out:

(x + 18)(x + 2)

That's factored completely!

6 0
3 years ago
PLEASEE HELP ME, ITS JUST ONE PROBLEM, PLEASE HELPPPP <3<3 !!!
Simora [160]

We can see that the function passes through the point (2,-1). This implies that

\log_b(2)=-1

or, equivalently,

b^{-1}=2 \iff \dfrac{1}{b}=2 \iff b=\dfrac{1}{2}

The same conclusion could have been reached by observing that the function passes through \left(\frac{1}{2},1\right)

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Zack brought two new jet skis for $15,480 how will make 38 equal payments how much will each payment be?​
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Which best describes the figure with precise language?
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