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3 years ago

Solve (x + 3)^2 + (x + 3) – 2 = 0.

Mathematics

2 answers:

Black_prince [1.1K]3 years ago

7 0

Step-by-step explanation:

. Answer is B.

yuradex [85]3 years ago

3 0

Answer:

The answer is the option A

$u^{2}+u-2=0$

Step-by-step explanation:

we have

$(x+3)^{2}+(x+3)-2=0$

Let

$u=(x+3)$

Substitute

$(u)^{2}+(u)-2=0$

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Thirty-six students at a large university were given a test to measure their intelligence quotient (IQ). A histogram of the IQ t

Verizon [17]

Answer:

102-105

Step-by-step explanation:

Median formula for a group data is expressed as shown;

Median = (N+1)/2 th value/interval

N is the total number of students

From the question N = 36

Median = (36+1)/2

Median = 37/2

Median = 18.5

Therefore we are to cumulate the value of the frequency up till the 18.5th value.

From the table

If we keep cummulating the frequency from the top;

Let's add:

1+3+5+5+8 = 21

Since the 18.5th values falls within the cumulative frequency value (i.e 21), the corresponding interval where we stopped cumulating will be our Median.

From the table, the interval with the frequency of 8 is 102 - 105. Hence the median is located at the interval 102 - 105

7 0

4 years ago

Are the ordered paires parallel perpendicular or neither

Annette [7]

Answer:

The answer is neither.

Step-by-step explanation:

The slope of AB is -5/0, and the slope of CD is 4/0.

6 0

3 years ago

Kenneth signed up to receive Internet service for $13 per month plus a $30 start-up fee. Which equation could be used to find th

zimovet [89]

The equation 13x+30=134 can be used to find the number of months Kenneth can receive internet service.

Step-by-step explanation:

Given,

Start up fee to receive internet = $30

Per month charges = $13

Total amount = $134

Let,

x be the number of months.

y be the total cost.

y = 13x+30

Putting y=134

$134=13x+30\\13x+30=134$

The equation 13x+30=134 can be used to find the number of months Kenneth can receive internet service.

Keywords: equation, addition

Learn more about addition at:

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7 0

3 years ago

Emile has calculated a one-tailed z-statistic of -1.97 and wants to see if it is significant at the 5% significance level.

Keith_Richards [23]

Answer:

Z = -1.65

Step-by-step explanation:

Z-score:

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score 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 p-value, we get the probability that the value of the measure is greater than X.

What is the critical value for the 5% significance level?

One-tailed statistic, so Z with a p-value of 0.05.

Looking at the z-table, this is Z = -1.65, so this is the critical value for the 5% significance leve.

8 0

3 years ago

How do i the find the slope?

inna [77]

Step-by-step explanation:

$x ^{1} = - 5 \\ y ^{1} = - 2 \\ x {}^{2} = - 2 \\ y {}^{2} = 1 \\ then \: you \: solve \: with \: that \: formula \: you \: know$

3 0

3 years ago