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Amiraneli [1.4K]
3 years ago
10

For a school play, the teacher asked the class to set up chairs in 20 rows with 25 chairs in each row. After setting up all the

chairs, they were 5 chairs short. How many chairs did the class set up
Mathematics
2 answers:
Dimas [21]3 years ago
8 0
The answer is 495 chairs. this is because the 20 rows x 25 chairs in each row=500 total chairs. if they were 5 shorts you have to subtract 5 from 500 which is 495 chairs.
pantera1 [17]3 years ago
6 0
20 rows * 25 chairs=500 chairs
500-5=495
Answer=495
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GEOMETRY. PLEASE HELP. I'M STUMPED!!!
tatiyna
Given the triangles ABC and PQR.
Angle A = Angle P
Angle B = Angle Q
Angle C = Angle R

Angle B = 3v+4
Angle Q = 8v-6
Let's find v

3v+4 = 8v-6
-5v = -10
v = 2

Angle B = 3v + 4
Angle B = 3(2) + 4
Angle B = 10.

The correct answer is letter C. 10


8 0
3 years ago
What's the additive inverse of 0.75.
Sophie [7]

Answer:

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6 0
3 years ago
A noted psychic was tested for extrasensory perception. The psychic was presented with 2 0 0 cards face down and asked to determ
Natasha2012 [34]

Answer:

C. P- value < 0.04 0.05

Step-by-step explanation:

hello,

we were given the sample size, n = 200

also the probability that the psychic correctly identifies the symbol on the 200 card is

p=\frac{50}{200}= 0.25

using the large sample Z- statistic, we have

Z=\frac{p- 0.20}{\sqrt{0.2(1-0.2)/200} }

   = \frac{0.25-0.20}{\sqrt{0.16/200}}

    = 1.7678

thus the P - value for the hypothesis test is P(Z > 1.7678) = 0.039.

from the above, we conclude that the P- value < 0.04, 0.05

3 0
3 years ago
What is the solution to –2(5y – 5) – 3y ≤ –7y + 22?
Gre4nikov [31]
-2(5y - 5) - 3y < = -7y + 22
-10y + 10 - 3y < = -7y + 22
-13y + 10 < = -7y + 22
-13y + 7y < = 22 - 10
-6y < = 12
y > = -12/6
y > = -2....answer B

6 0
3 years ago
Read 2 more answers
What is 4 million years plus 4 thousand years
RUDIKE [14]
The answer is 4,004,000 because 4,000,000 + 4,000 = 4,004,000
4 0
3 years ago
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