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Angelina_Jolie [31]
4 years ago
6

Use the quadratic formula to find both solutions to the quadratic equation

Mathematics
1 answer:
Usimov [2.4K]4 years ago
3 0

Answer: D

Step-by-step explanation:

i took the test

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Factorise the following questions
lesya692 [45]

Answer:

ii)

\sqrt{2} x^{2}  + 3x +  \sqrt{2}   \\  =  \sqrt{2}x(x +  \sqrt{2} ) + x +  \sqrt{2} \\  = ( \sqrt{2} x + 1)(x +  \sqrt{2} )

7 0
3 years ago
Nick has $40 and spends $1.50 each day. Bob has only $9 but he gets a daily allowance from which he saves $1.50 each day. In how
frutty [35]
Nick.
40 - 1.50
38.5 - 1.50
37 - 1.50
35.5 - 1.50
34 - 1.50
32.5 - 1.50
31 - 1.50
29.5 - 1.50
27 - 1.50
25.5 - 1.50
= 24. 10 days.
24 - 1.50
= 22.5 after 11 days.
Bob:
9 + 1.50
10.50 + 1.50
12 + 1.50
13.50 + 1.50
15 + 1.50
16.50 + 1.50
18 + 1.50
19.50 + 1.50
21 + 1.50
22.50 + 1.50
Same amount of money: 24. After 10 days.
25.50 + 1.50
Bob will have more money then Nick in 11 days. He'll have 27 dollars when Nick has 22.5 dollars.

6 0
3 years ago
If f(x) = 5x(3exponent) - 2 and g(x) = 2x+1 , find (f+g) (x)
Rus_ich [418]

For this case we must find

(f + g) (x).

By definition we have to:

(f + g) (x) = f (x) + g (x)

We have the following functions:

f (x) = 5x ^ 3-2\\g (x) = 2x + 1

Now, applying the given definition, we have:

(f + g) (x) = 5x ^ 3-2 + 2x + 1\\(f + g) (x) = 5x ^ 3 + 2x-1

Answer:

(f + g) (x) = 5x ^ 3 + 2x-1

4 0
3 years ago
Keisha took out a loan for 10,500 and was charged simple interest at an annual rate of 8.8%. The total interest she paid on the
klio [65]

Answer: 6 months

Step-by-ste

462=(10,500)(0.88)t

462=924t

462/924=t

0.5=t

So the loan was 0.5 year's

Since we assume that there are 12 months in a year, the loan was 0.5 .12=6 months

4 0
3 years ago
Anyone please help me? tysm!
Oksana_A [137]

Answer:

6 ft

Step-by-step explanation:

The surface area of a cube is given by

SA = 6s^2

216 = 6s^2

Divide each side by 6

216/6 = 6s^2/6

36 = s^2

Take the square root of each side

sqrt(36) = sqrt(s^2)

6 =s

Each side is 6ft

7 0
4 years ago
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