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r-ruslan [8.4K]
3 years ago
12

4. HM SENSE-MAKING

Mathematics
1 answer:
meriva3 years ago
7 0

Answer:

15x+55y+20

Step-by-step explanation:

mark me brainlest

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X^2+26x+c<br> find the value of c that makes each trinomial a perfect square
alekssr [168]

Answer:

c = 169

Step-by-step explanation:

We can use FOIL to determine this after factoring out the equation.

(x+13)(x+13)

F: (x*x)

O: (x*13)

I: (13*x)

L: (13*13)

x^2 + 26x + 169

3 0
3 years ago
. If IQ scores are normally distributed with a mean of 100 and a standard deviation of 5, what is the probability that a person
bulgar [2K]

Answer:

2.28% probability that a person selected at random will have an IQ of 110 or greater

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 100, \sigma = 5

What is the probability that a person selected at random will have an IQ of 110 or greater?

This is 1 subtracted by the pvalue of Z when X = 110. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{110 - 100}{5}

Z = 2

Z = 2 has a pvalue of 0.9772

1 - 0.9772 = 0.0228

2.28% probability that a person selected at random will have an IQ of 110 or greater

5 0
3 years ago
8) How many solutions does the following<br> equation have?<br> 0 = 9x2 - 6x + 1
sweet [91]
I’m guessing it’s 9x^2 -6x + 1 but this is basically just one. (1/3,0) use desmos if you’re curious
4 0
2 years ago
Solve this quadratic equation using the quadratic formula. 2x 2 - 10x + 7 = 0
sladkih [1.3K]

Answer:X=11/10

Step-by-step explanation:

2x2-10x+7=0

<u><em>4</em></u>-10x+<u><em>7</em></u>=0

11-10x=0

-10x= -11

Divide both side by -10

-10x/-10.  -11/-10

Answer= 11/10

7 0
3 years ago
Read 2 more answers
Find the slope and y-intercept of the line 18x+4y=112
FromTheMoon [43]

Answer:

y-intercept is y= -4.5+28 slope is 4.5

Step-by-step explanation:

18x+4y=112

-18x              -18x

4y=112-18x

-----------------

        4

y= -4.5x+28

7 0
3 years ago
Read 2 more answers
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