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Kipish [7]
2 years ago
11

Twice the sum of a number and 2 is equal to three times the difference of the number and 7 Find the number.

Mathematics
1 answer:
romanna [79]2 years ago
4 0

Answer:

X=13

Step-by-step explanation:

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A man needed to sell a car. He priced it at 3500 the first day. The second day he reduced the price by 15%. What was the price o
Arlecino [84]

Answer:

Step-by-step explanation:b

4 0
3 years ago
Plz help i need to do number 12 i need the area and perimeter make sure you round to the nearest whole number
mafiozo [28]

Answer:

Area= 24 and perimeter equals 12

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
What is the vertex of the function?
Romashka [77]

Answer:

  (4, -25)

Step-by-step explanation:

One way to answer this is to put the equation into vertex form.

  f(x)= x^2 -8x -9 . . . . . given

Add and subtract the square of half the x-coefficient:

  f(x) = x^2 -8x +(-8/2)^2 -9 -(-8/2)^2

  f(x) = x^2 -8x +16 -25

  f(x) = (x -4)^2 -25

Comparing this to the vertex form of a quadratic:

  f(x) = a(x -h)^2 +k

we find that (h, k) = (4, -25). This is the vertex.

_____

<em>Alternate solution</em>

The line of symmetry for ...

  f(x) = ax^2 +bx +c

is given by x = -b/(2a). For your given quadratic that line is ...

  x = -(-8)/(2(1)) = 4

Evaluating f(4) gives the y-coordinate:

  f(4) = 4^2 -8·4 -9 = -25

The vertex is (x, y) = (4, -25).

8 0
3 years ago
Please help on this one?
ki77a [65]

m = \frac{1}{2},   (x₁ , y₁) = (-2, -4)

y - y₁ = m(x - x₁)

y -(-4) = \frac{1}{2}(x - (-2))

y + 4 = \frac{1}{2}(x +2)

y + 4 = \frac{1}{2}x + 1

     y = \frac{1}{2}x - 3

Answer: A

5 0
3 years ago
Find the new amount given the original amount and the percent of change. $35,000; 7% decrease​
SpyIntel [72]

Answer:

7%=50

34950 7% decrease

35050 7% increase

Step-by-step explanation:

if 35000 is before the 7% decrease then it would be 34950

if after 35050

6 0
3 years ago
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