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ipn [44]
3 years ago
12

4. (02.05) Which of the following expressions is the conjugate of a complex number with 2 as the real part and 31 as the imagina

ry part? (1 point)​
Mathematics
1 answer:
lisabon 2012 [21]3 years ago
8 0

Answer:I think

Step-by-step explanation:

Ifoly/3fcEdSxund

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What is The area of this trapezoid?
Dennis_Churaev [7]

Answer:

24

Step-by-step explanation:

area of regualr trapezoid = 1/2 ( sum of parallel sides )( height)

                                         = ( 0.5)(8+4)(4 ) =24

3 0
3 years ago
What appears to be the range of the part of the function shown on the grid?
Yuki888 [10]

Answer:

D) g(x) = 2x-8

Step-by-step explanation:

4 0
3 years ago
A community college has a math placement exam that has a mean of 65 and a standard deviation of 8.2. If a student takes the exam
Marat540 [252]

Answer:

The score that cuts off the bottom 2.5% is 48.93.

Step-by-step explanation:

When the distribution is normal, we use 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 question, we have that:

\mu = 65, \sigma = 8.2

What is the score that cuts off the bottom 2.5%

This is X when Z has a pvalue of 0.025, so X when Z = -1.96.

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

-1.96 = \frac{X - 65}{8.2}

X - 65 = -1.96*8.2

X = 48.93

The score that cuts off the bottom 2.5% is 48.93.

8 0
3 years ago
Read 2 more answers
Branden and Pete both play running back. Branden carries the ball 75 times for 550 yards and Pete had 42 carries for 380 yards w
mars1129 [50]

Answer:

Pete runs farther per carry.

Step-by-step explanation:

Given:

Branden and Pete both play running back.

Branden carries the ball 75 times for 550 yards.

Pete had 42 carries for 380 yards

Question asked:

Who runs farther per carry ?

Solution:

First of all we find each boy's distance covered per carry:-

<u>For Branden</u>

Branden carries the ball 75 times for = 550 yards.

Branden carries the ball 1 time for = \frac{550}{75} =7.34\ yard

<u>For Pete </u>

Pete carries 42 times for = 380 yards

Pete carries 1 time for = \frac{380}{42} =9.05\ yards

As Pete runs 9.05 yards for 1 carry while Branden runs 7.34 yards for 1 carry, hence Pete runs farther per carry.

3 0
3 years ago
Nadya solves the equation 4x-4=20. Her work is shown below.
Stells [14]
Step 2 she should add 4 not subtract
3 0
3 years ago
Read 2 more answers
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