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Rufina [12.5K]
4 years ago
14

Which of the following must be true PLEASE HELP ME ASAP

Mathematics
1 answer:
Bond [772]4 years ago
6 0
Go with bubble # 2 that one works correctly
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Evaluate the expression 23- x, if x = 8
kow [346]

Answer:

23- x, if x = 8

23 - 8 = 15

Step-by-step explanation:

6 0
3 years ago
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Write 3x 1/2 in radical form
stiv31 [10]

Answer:

3x^1/2 in radical form is

\sqrt{3x}

Hope this helps you

8 0
4 years ago
A university is applying classification methods in order to identify alumni who may be interested in donating money. The univers
HACTEHA [7]

The accuracy in the research done by university is 0.81, sensitivity is 0.93, specificity is 0.81 and precision is 0.047.

Given sample size of 58205 and proportion of people donated 576. Cutoff is 0.5.

Probability is the chance of happening an event among all the events possible. It lies between 0 and 1.

TP=total people donated in sample, TN=total number of people,FP=donation,FN=No donation

Accuracy is calculated as under:

=(TP+TN)/(TP+TN+FP+FN)

=(268+23439)/(238+23439+5375+20)

=23707/29102

=0.81

Accuracy=0.81

Sensitivity is calculated as under:

=TP/(TP+FN)

=268/(268+20)

=268/288

=0.93

Precision is calculated as under:

=TP/(TP+FP)

=268/(268+5375)

=268/5643

=0.047

Their values are the probabilities in itself.

Hence accuracy is 0.81, sensitivity is 0.93, specificity is 0.81 and precision is 0.047.

Learn more about probability at brainly.com/question/24756209

#SPJ4

7 0
2 years ago
which function has real zeros at x = −10 and x = −6? f(x) = x2 16x 60 f(x) = x2 − 16x 60 f(x) = x2 4x 60 f(x) = x2 − 4x 60
LiRa [457]

Answer:

Option A is correct

The function x^2+16x+60 has real zeroes at x =-10 and x =-6

Explanation:

Given: The real zeroes or roots are x = -10, and x = -6

To find the quadratic function of degree 2.

x^2- (\alpha+\beta)x + \alpha\beta =0 where α,β are real roots.   ....[1]

Here, α= -10  and β= -6

Sum of the roots:

α+β =  -10+(-6) = -10-6 = -16

Product of the roots:

αβ = (-10)(-6)= 60

Substitute these value in equation [1] we have;

x^2-(-16)x+60 = x^2+16x+60

Therefore, the quadratic function for the real roots at x =-10 and x =-6 ;

x^2+16x+60

8 0
3 years ago
Read 2 more answers
PLEASE HURRY!
crimeas [40]

Answer:

A

Step-by-step explanation:

+7 means go up

if the graph was 7x, the graph enlarges by a factor of 7

6 0
3 years ago
Read 2 more answers
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