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Akimi4 [234]
3 years ago
6

Use completing the square to solve (x + 7)(x – 9) = 25 for x

Mathematics
1 answer:
klasskru [66]3 years ago
4 0
Your answer is C. (+-)sqrt 89. Hope this helps, best of luck to you! :)
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Mitchell has $17000 to put towards a car. He wants to invest this money in an account paying 3.3%/a
arsen [322]

Answer:

He can afford the monthly payment of the Ford car since his accumulated interest after 5 years is greater than the amount the Ford will cost

Step-by-step explanation:

For the Ford

There are 60 months in 5 years so the total amount he will be paying is 60 * 299 = $17,940

For the Volkswagen, amount to pay will be 60 * 389 = $23,340

Now to see the payment he can afford, let’s calculate the amount he will have in his savings

We shall use the formula for compound interest here

A = I(1 + r/n)^nt

where A is the amount after the

number of years

I is the initial amount = 17,000

r is the rate = 3.3% = 3.3/100 = 0.033

n is the

number of times interest is compounded per year = 12

t = number of years = 5

plugging these values we have

A = 17,000(1 + 0.033/12)^12(5)

A = 17,000( 1.00275)^60

A = $20,045

This shows he can afford the Ford

5 0
3 years ago
What is the rule for dilations​
padilas [110]

Size change for preimage...

7 0
3 years ago
A Function is a rule that assigns each value of the independent variable to exactly _____ value of the dependent variable
kherson [118]
A function is a rule that assigns each value of the independent variable to exactly ONE value of the dependant variable
4 0
4 years ago
76%
topjm [15]

Answer:

Mode = 7

Median = 6

Mean = 5.2

Range = 7

Step-by-step explanation:

Mode:

The most repeated number is 7 (thrice).

Median:

First, arrange them in order.

1, 2, 3, 4, 5, 7, 7, 7, 8, 8

The two middle numbers are 5 and 7. Find their average.

(5 + 7)/2 = 6

Mean:

(3+7+2+4+7+5+7+1+8+8)/10 = 5.2

Range:

Largest number - smallest number

8 - 1 = 7

Hope this helps!

5 0
3 years ago
A side of a square is 10 m longer than the side of an equilateral triangle the perimeter of the square is three times the perime
Slav-nsk [51]

Answer:

\large \boxed{\text{8 m}}

Step-by-step explanation:

     Let side of triangle = x

And side of rectangle = y

  Perimeter of triangle = 3x

Perimeter of rectangle = 4y

We have two conditions:

\begin{array}{lrcl}(1) & y & = & x + 10\\(2) &4y & = & 3\times 3x\\& 4y & = & 9x\\& 4(x + 10) & = & 9x\\& 4x + 40 & = & 9x\\& 40 & = & 5x\\& x& = &\mathbf{8}\\\end{array}\\\text{Each side of the triangle is $\large \boxed{\textbf{8 m}}$ long.}

3 0
3 years ago
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