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ExtremeBDS [4]
3 years ago
8

Help please!!!!!!!!​

Mathematics
2 answers:
ad-work [718]3 years ago
7 0
True its just flipped around all the corners are the same
Delvig [45]3 years ago
6 0

Answer:

true

Step-by-step explanation:

if u turn the triangle u can see that they are congruent

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Here are the numbers of children in 12 elementary school classes.
ludmilkaskok [199]

Answer:

18, 19(which has two) 20(has two)

Step-by-step explanation:

Just find the ones that appear more than one time.

5 0
2 years ago
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If line b is perpendicular to line a, and line c is
emmasim [6.3K]

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c

Step-by-step explanation:

4 0
3 years ago
Last week Andi had exams in Chemistry and in Spanish. On the chemistry exam, the mean was µ = 30 with σ = 5, and Andi had a scor
ValentinkaMS [17]

Answer:

Chemistry

Step-by-step explanation:

To solve the above question, we use the z score formula

Andy took two Exams, Chemistry and Spanish. So we find the z score for both exams.

a) Chemistry Exam

On the chemistry exam, the mean was µ = 30 with σ = 5, and Andi had a score of X = 45

z-score is given as: z = (x-μ)/σ

where x is the raw score,

μ is the population mean

σ is the population standard deviation

z = (x-μ)/σ

z = (45 - 30)/5

z = 15/5

z = 3

b) On the Spanish exam, the mean was µ = 60 with σ = 6 and Andi had a score of X = 65.

z-score is given as: z = (x-μ)/σ

where x is the raw score,

μ is the population mean

σ is the population standard deviation

z = (x-μ)/σ

z = (65 - 60)/6

z = 5/6

z = 0.8333333333

Comparing the z score of both Exams,

Andy had a z score of 3 in the Chemistry exam and 0.8333333333 in the Spanish exam.

Therefore, Andy should be expecting a better grade in the Chemistry exam because his z score in the Chemistry exam was higher than that of the Spanish exam.

7 0
2 years ago
PLEASE HELP with proving lines parallel
den301095 [7]
90 mins later we had to go to sleep for sub for two other people that were not
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Two planes are circling an airport awaiting their landing clearance. If the following measures in the diagram
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4557 feet

Step-by-step explanation:

3 0
2 years ago
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