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2 years ago

Can anyone help with this, it’s my worst subject.

Mathematics

2 answers:

7nadin3 [17]2 years ago

7 0

Yes^ they are congregant because they have the same measurements

Zina [86]2 years ago

5 0

Answer:

Yes

Step-by-step explanation:

They are congruent because they gave the same dimensions.

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Audrey drew a rectangle on a coordinate grid. From

kupik [55]

Answer: (8, 2)

Step-by-step explanation:

up and right are positive, so we need to add the motion made to the left for the x coordinate and subtract the motion made upward from the y coordinate.(3 + 5, 11 - 9) = (8, 2)

8 0

2 years ago

There are 250 students taking either band or chorus. If there are 180 students taking band and 60 students in both band and chor

Olegator [25]

Answer:

There are 70 students only in chorus.

Step-by-step explanation:

Total number of students is 250

Out of 250, 180 students took band.

And 60 took band and chorus, i.e this is the intersection of the 2 groups.

The Venn diagram is attached below.

So, the number of students who took only band = 180-60 = 120

Total number of students or sum of the 3 regions is 250.

So, the number of students who took only chorus = 250-180 = 70

4 0

3 years ago

A screening test for a newly discovered disease is being evaluated for its performance as a screening test. In order to determin

Elena-2011 [213]

Answer:

- Sensitivity = 62.7 %

- specificity = 74.9 %

- positive predictive value = 45.2 %

- negative predictive value = 85.9 %

- Accuracy of the test = 71.9 %

Step-by-step explanation:

Given the data in th question;

CONDITION POSITIVE CONDITION NEGATIVE TOTAL

TEST POSITIVE 42 51 93

TEST NEGATIVE 25 152 177

TOTAL 67 203 270

so; A=42, B=51, C=25 and D=152

Sensitivity = [A / ( A + C) ]×100= [42 /( 42 + 25)]×100 = [42 / 67] 100=

Sensitivity = 62.7 %

specificity = [D / ( D + B) ]×100= [152 /( 152 + 51)]×100 = [152 / 203] 100=

specificity = 74.9 %

positive predictive value = [A / ( A + B) ]×100 = [42 /( 42 + 51)]×100 =[42/93] 100

positive predictive value = 45.2 %

negative predictive value = [D / ( D + C) ]×100 = [152 /( 152 + 25)]×100 =[152/177] 100

negative predictive value = 85.9 %

Accuracy of the test = [A + D / ( A+B+C+D)] = [42 + 152 / ( 42+51+25+152)]

= [ 194 / 270 ]

Accuracy of the test = 71.9 %

3 0

2 years ago

Lytrisha claims that y= 2x2 + 3 is a function but not a linear function select the statement that supports lytrishas claim

Gnom [1K]

Answer:

Step-by-step explanation:

A is wrong, it increases

C is wrong, the coefficient does not determine if it is linear (straight), the exponent does.

D is wrong, you don't need to know a point to determine if it is linear, (if you have 3 points you can though. )

8 0

2 years ago

Please Answer below!!!

anastassius [24]

Answer:

Step-by-step explanation:

5 0

3 years ago