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3 years ago

Please solve 1 thru 4

Mathematics

2 answers:

Natasha_Volkova [10]3 years ago

8 0

Answer:

lolololololololol

Step-by-step explanation:

jolli1 [7]3 years ago

5 0

Answer:

1.triangular prism

2.two dimensional

3.faces

4. surface area

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Mary needs to order pizza for 18 students. Each student should get 1/4 of the pizza. How much pizza will be left over?

Inessa [10]

Answer:

Step-by-step explanation:

Answer:

Order 5 pizza's. There is

a pizza left so someone gets an extra portion! Or it is split evenly!

Explanation:

No matter how you present this, the underlying principle is that of ratio.

If each pupil gets

of a pizza the 1 pizza feeds 4 students.

So the ratio of

pizza count

Student count

→

Need to have sufficient pizza for 18 students. The ratio will be constant so we have:

Let the count of pizzas be

pizza count

Student count

So we now have:

Multiply both sides by

giving:

But

You can not order

a pizza so the total pizza count is 5

4 0

3 years ago

A culture started with 5000 bacteria after three hours it grew 6500 bacteria predict how many bacteria will be present after 13

charle [14.2K]

Answer:

15595 bacteria will be present after 13 hours.

Step-by-step explanation:

Continuous population growth:

The continuous population growth model, for the population after t hours, is given by:

$P(t) = P(0)e^{rt}$

In which P(0) is the initial population and r is the growth rate.

Started with 5000 bacteria

This means that $P(0) = 5000$

$P(t) = 5000e^{rt}$

After three hours it grew 6500 bacteria:

This means that $P(3) = 6500$ . We use this to find r.

$P(t) = 5000e^{rt}$

$6500 = 5000e^{3r}$

$e^{3r} = \frac{65}{50}$

$\ln{e^{3r}} = \ln{\frac{65}{50}}$

$3r = \ln{\frac{65}{50}}$

$r = \frac{\ln{\frac{65}{50}}}{3}$

$r = 0.0875$

$P(t) = 5000e^{0.0875t}$

How many bacteria will be present after 13 hours?

This is P(13). So

$P(13) = 5000e^{0.0875*13} = 15594.8$

Rounding to the nearest whole number

15595 bacteria will be present after 13 hours.

7 0

3 years ago

HELP PLEASE QUICKKKKKK

Gnesinka [82]

Answer:

lkfbnrld/kgnvr/slkbvluydcfgiufhvgukrghoudgb

8 0

3 years ago

Help<br>I need this answer A.S.A.P.

kiruha [24]

Answer:

i think its 31

Step-by-step explanation:

4 0

3 years ago

You have a mean score of 84 after taking five 100-point tests. What do you need to score on the sixth 100-point test to have a m

kap26 [50]

The mean of n numbers is the sum of the numbers divided by n.

You have a mean score of 84 after taking 5 tests. Let x be the sum of scores.
$\frac{x}{5}=84 \\
x=84 \times 5 \\
x=420$
You scored a total of 420 points on five tests.

You need to have a mean score of 85 after taking 6 tests. Let y be the score you need to obtain. Your total score on 6 tests is 420+y.
$\frac{420+y}{6}=85 \\
420+y=85 \times 6 \\
420+y=510 \\
y=510-420 \\
y=90$

You need to score 90 points on the sixth test.

8 0

3 years ago

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