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nikitadnepr [17]
3 years ago
8

Question #13, how to solve for the value of x in the triangle? Whoever answers right will receive brainliest.

Mathematics
1 answer:
ycow [4]3 years ago
6 0

Answer:x=8 or x=-4

Step-by-step explanation:

x²+(x+7)² = (x+9)²

x²+(x+7)(x+7) = (x+9)(x+9)

x²+x²+7x+7x+49 = x²+9x+9x+81

2x²+14x+14x+49 = x²+18x+81

2x²-x²+14x-18x = 81-49

x²-4x = 32

(x²-4x)-32 = 0

(x+2x)(x-2x)-32 = 0

x²+2x²-2x²-4x-32 = 0

x²-4x-32 = 0

(x-8)(x+4) = 0

(x-8) = 0 or (x+4) =0

x = 8 or x = -4

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13. kara walks five days each week. this week she walked 7/8 mile on monday, 3/5 mile on tuesday, 4/10 on
BigorU [14]

The total distance, in miles, that kara walked at the park this week is 57/20.

<h3>What is the unitary method?</h3>

The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value.

Given that kara walks five days each week. this week she walked 7/8 mile on monday, 3/5 mile on tuesday, 4/10 on wednesday, 1/10 mile on thursday, and 9/10 mile on friday.

Now, in order to find the total distance, in miles, that kara walked at the park this week.

kara walked on Monday = 7/8

kara walked on Tuesday = 3/5

kara walked on wednesday = 4/10

kara walked on thursday=1/10

kara walked on friday= 9/10

Now, to get the total distance in miles by adding both the miles she walked this week:

7/8 + 3/5 +4/10 + 1/10 + 9/10

35/40 + 24 / 40 + 14/10

59/40 + 14/10

114/40

57/20

Therefore, the total distance, in miles, that kara walked at the park this week is 57/20.

Learn more about the unitary method;

brainly.com/question/23423168

#SPJ4

8 0
1 year ago
Would f(-7) if f(x) = 8x + 15 does that equal -804??
nydimaria [60]
No it would equal -41
8 0
3 years ago
Please answer this as soon as possible
skelet666 [1.2K]

Answer:x=-8

Step-by-step explanation:

12(x/4+2/3)=12(x/6)

3x+8=2x

3x-2x=-8

x=-8

3 0
3 years ago
Read 2 more answers
Please help!!! I don't get this
salantis [7]

Answer:

The last one

Step-by-step explanation:

Actually I think it's a correct answer .

4 0
3 years ago
F(x) = x(2x/2)/x(x+5)(x+6)^2 <br><br> Find the vertical asymptotes?
Alex Ar [27]

Answer:

  x = -5, x = -6

Step-by-step explanation:

After canceling common terms from numerator and denominator, there are two factors remaining in the denominator that can become zero. The vertical asymptotes are at those values of x.

\displaystyle F(x)=\frac{x\frac{2x}{2}}{x(x+5)(x+6)}=\frac{x}{(x+5)(x+6)}

The denominator will be zero when ...

  x + 5 = 0 . . . . at x = -5

  x + 6 = 0 . . . . at x = -6

7 0
3 years ago
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