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Diano4ka-milaya [45]
3 years ago
13

Stefan is measuring the angles of a triangle. He measures the first angle and gets a measure of 90°. What does he know about the

other two angles? A) They are each 45°. B) They should add up to be 270° C) Their measures should add up to be 90° D) He doesn't know anything about the other two angles.
Mathematics
2 answers:
xxTIMURxx [149]3 years ago
8 0

Answer:

C

Step-by-step explanation:

SashulF [63]3 years ago
7 0
I 100% positive the answer is <span>C) Their measures should add up to be 90° </span> i just took the test and the answer above me is 100% wrong
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How to find the mean of a fraction
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Answer:

To find the average of a set of fractions,add all fractions, then divide the sum by the number of fractions as follows: Convert the integers and mixed numbers to improper fractions.

Step-by-step explanation:

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Suppose a cell doubles every hour write an exponetial expression for the number of cells created in 24 hours
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8 0
3 years ago
A machine at a manufacturing plant can make 16 of Item A and 20 of Item B per hour. The machine runs 24 hours a day. Yesterday,
Anvisha [2.4K]

Answer:

A) x + y = 24 and 16x + 20y = 434

B) Item A = 11.5 hours per day

Item B = 12.5 hours per day

C) The work done in part A was to derive a system of equations based on the values given to us to produce the items where x and y denoted the number of hours per day it took to make item A and B respectively. Meanwhile, in part B, I employed the substitution method to solve the simultaneous equation derived in part A in order to get the number of hours per day used for each item.

Step-by-step explanation:

A) Let x represent the amount of hours it took to make item A and let y represent the amount of hours it took to make item B.

Thus, since the machine runs 24 hours a day, we have;

x + y = 24 - - - (eq 1)

Since the plant can make 16 of Item A and 20 of Item B per hour and it made 434 items yesterday, we have;

16x + 20y = 434 - - - (eq 2)

B) to find the time taken for each item per day, let's make x the subject in eq 1.

x = 24 - y

Put 24 - y for x in eq 2;

16(24 - y) + 20y = 434

384 - 16y + 20y = 434

4y = 434 - 384

4y = 50

y = 50/4

y = 12.5 hours

Thus, x = 24 - 12.5

x = 11.5 hours

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7 0
3 years ago
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