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Alex73 [517]
2 years ago
10

Worth 25 points, giving brainiest to a quick and good answer.

Mathematics
1 answer:
vredina [299]2 years ago
7 0

Answer:


Step-by-step explanation:

Note that the quadratic formula has that "plus or minus" due to our taking the square root of some quantity.  No square root is involved in the two formulas you've posed.

I have two suggestions here:

1) Write " (x plus or minus y)^2 = x^ plus or minus 2 times xy + y^2 "  Note that a + on the left side corresponds to a + on the right side, and same with - .

2) Memorize these two formulas, which in most algebra textbooks you'll find in the section "special products and factoring."


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7.5 x 7.5 x (6.084−5.44)
Mars2501 [29]

Hello!

Answer:

36.225

Step-by-step explanation:

Hope this helps!

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2 years ago
What must be subtracted from 4x4 - 2x3 -6x2 + x - 5 so that the result is exactly divisible by 2x2 + 3x - 2? PLS ANSWER. I WILL
aalyn [17]

Answer:

Step-by-step explanation:

To solve this we should use the Euclidean division :

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  • we should divided by :  4+3x-2=3x+2 and see the rest

Here is a picture with the operation

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3 years ago
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Step-by-step explanation:

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3 0
3 years ago
Read 2 more answers
Evaluate ƒ( x ) = x 2 + 1 for ƒ(10).
vlabodo [156]
F(x) = x^2 + 1  f(10)
f(10) = 10^2 + 1
f= 101
7 0
3 years ago
The distribution of the number of words in text messages between employees at a large company is skewed right
kaheart [24]

The probability the sample mean is more than 10 words for a random sample of 39 messages is 2.12%

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more numbers and variables.

The z score is given by:

z = (raw score - mean) / (standard deviation / √sample size)

Given mean of 8.6 words and a standard deviation of 4.3 words. If a random sample of 39 messages, hence, for x > 10:

z = (10 - 8.6) / (4.3 / √39) = 2.03

P(x > 10) = P(z > 2.03) = 1 - P(z < 2.03) = 1 - 0.9788 = 0.0212

The probability the sample mean is more than 10 words for a random sample of 39 messages is 2.12%

Find out more on equation at: brainly.com/question/2972832

#SPJ1

8 0
1 year ago
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