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Gennadij [26K]
3 years ago
7

There are 21 students in a classroom with 8

Mathematics
2 answers:
Sauron [17]3 years ago
7 0
There are able to sit 16 people
lina2011 [118]3 years ago
3 0

the answer is D

Okay so they are 8 tables and if 2 students can sit at a table how many students can sit down at tables

8*2=16

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Fifty hundredths Seventy-five hundredths Twenty hundredths Eighty hundredths
MAXImum [283]
I think the answer is c sorry if I’m wrong
7 0
3 years ago
A box is to be wrapped in a shiny red decorative paper.The box is 9 inches long,5 inches wide,and 4 inches high.How much wrappin
Gnoma [55]

Answer:

Draw a figure!

There are 6 surfaces to add.

4 of them have area 9*5 and 2 have area 5*4.

You should be able now to compute the surface areas.

Step-by-step explanation:

4 0
3 years ago
Y/3 - 4 = -1 solve for y
Marysya12 [62]

Answer:

y=9

Step-by-step explanation:

First we need to solve al addition and subtraction by performing the inverse operation. In this case, we need to add to reverse the subtraction

y/3 -4= -1

y/3= 3

Now we solve all multiplication and division again using the inverse operation, which in this case is multiplication, because the variable is being divided.

y/3=3

y=9

Thus we get that the value for y is 9.

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5 0
3 years ago
| 18 - (-13) | <br><br><br> it’s subtracting integers
Anna35 [415]
Answer: 31

How: If there are two negative signs like this, you would connect them together and make it into a addition sign where you then can add them.
7 0
2 years ago
Suppose the force acting on a column that helps to support a building is a normally distributed random variable X with mean valu
Sauron [17]

Answer:

(1) 0.4207

(2) 0.7799

Step-by-step explanation:

Given,

Mean value,

\mu = 15.0

Standard deviation,

\sigma = 1.25

(1) P(X ≥ 17.5) = 1 - P( X ≤ 17.5)

= 1- P(\frac{x-\mu}{\sigma} \leq \frac{17.5-\mu}{\sigma})

=1-P(z\leq \frac{17.5 - 15}{1.25})

=1-P(z\leq \frac{2.5}{1.25})

=1-P(z\leq 2)

=1- 0.5793   ( By using z-score table )

= 0.4207

(2) P(14 ≤ X ≤ 18) = P(X ≤ 18) - P(X ≤ 14)

=P(z\leq \frac{18 - 15}{1.25}) - P(z\leq \frac{14 - 15}{1.25})

=P(z\leq \frac{3}{1.25}) - P(z\leq -\frac{1}{1.25})

=P(z\leq 2.4) - P(z\leq -0.8)

= 0.9918 - 0.2119

= 0.7799

8 0
3 years ago
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