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zvonat [6]
4 years ago
5

Whats the solution of x^2+4x-4=8

Mathematics
1 answer:
denpristay [2]4 years ago
8 0

Answer:

x = 2, x = -6

Step-by-step explanation:

x^2+4x-4=8

Subtract 8 from both sides.

x^2+4x-4-8=8-8

Simplify.

x^2+4x-12=0

Solve with quadratic formula.

a = 1

b = 4

c = -12

I do not have time to show work for quadratic formula parts.

I am so sorry for this inconvenience.

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Which of the following best describes how muckrakers brought about reform in the Progressive Era?
lora16 [44]

Answer:

B

Step-by-step explanation:

Both A and B are similar but the difference is that muckrakers did not present facts to encourage more investigation, they presented facts to make a change. There are many examples but one major one is Upton Sinclair and his book "The Jungle". It exposed the meat industry and how corrupted it was. This led to many changes such as new food safety laws.

6 0
3 years ago
Read 2 more answers
Write the equation of a line which has slope of 3/4 and goes through the point (0,-4). express the equation in slope intercept f
Tamiku [17]

Answer:

y=3/4x-4

Step-by-step explanation:

the y intercept is -4 and then you plug in the slope

7 0
3 years ago
Need help on this one
malfutka [58]

Answer:

3

Step-by-step explanation:

To simplify this expression, we will simply work with the numerator, then the denominator, and then the fraction as a whole, following PEMDAS.

Numerator:  12 - 6 + 5 * (-3)^2

= 12 - 6 + 5 * (9)

= 12 - 6 + 45

= 6 + 45

= 51

Denominator:  17

So our simplified fraction is as follows:

51/17

Which can be reduced to the whole number, 3.

Cheers.

3 0
3 years ago
If r varies directly as w and the constant of variation is 12 what is the value of w when r =42
Airida [17]

r=kw

r=12w

42 = 12*w

divide by 12

42/12 =w

3.5 = w

5 0
3 years ago
ms.marks records the number of words each typist can type in 1 minute how many more words could the fastest typist type in 30 mi
krok68 [10]
The fastest typist is Charlie at 60wpm. Let's figure out how many words he can type in 30 minutes using place value strategies.

6 * 3 = 18

Now, move the decimal two places to the right because there is one zero in 60 and one zero in 30.

1800.

Charlie can type 1800 words in 30 minutes.

The slowest typist is Jerome, at 40 wpm. Let's figure out how many words he can type in 30 minutes using place value strategies.

4 * 3 = 12

Now, move the decimal two places to the right because there is one zero in 40 and one zero in 30.

1200.

Jerome can type 1200 words in 30 minutes.

Now, subtract Charlie's words in 30 min by Jerome's words in 30 min.

1800 - 1200 = 600

Charlie can type 600 more words in 30 minutes than Jerome.
7 0
3 years ago
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