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Studentka2010 [4]
2 years ago
10

What is the value of y?​

Mathematics
1 answer:
prohojiy [21]2 years ago
8 0

Answer:

it is 108 because 180-72

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Ricardo has a square hot tub. He wants to build a square
Sliva [168]

Answer:

4.8ft

Step-by-step explanation:

Let x be the length of the side of the hot tub. Ricardo wants the pool's sides to be 5 times as long, so

5x=24\implies x=\dfrac{24}5=4.8\text{ ft}  

8 0
3 years ago
Mark wants to find the area of a circle with a diameter of 8 cm. Which expressions can he use to find the area of the circle in
Salsk061 [2.6K]

Answer:

C and D are the correct answers

Step-by-step explanation:

(in the picture)

5 0
2 years ago
Help me please 9w+4= 2w+32
Afina-wow [57]

Answer:

w=4

Step-by-step explanation:

9w+4=2w+32

-2w     -2w

7w+4=32

     -4   -4

7w=28

w=4

6 0
3 years ago
Read 2 more answers
If 3,000 bacteria, with a growth constant (k) of 2.8 per hour, are present at the beginning of an experiment, in how many hours
Ivenika [448]

Given:

Initial number of bacteria = 3000

With a growth constant (k) of 2.8 per hour.

To find:

The number of hours it will take to be 15,000 bacteria.

Solution:

Let P(t) be the number of bacteria after t number of hours.

The exponential growth model (continuously) is:

P(t)=P_0e^{kt}

Where, P_0 is the initial value, k is the growth constant and t is the number of years.

Putting P(t)=15000,P_0=3000, k=2.8 in the above formula, we get

15000=3000e^{2.8t}

\dfrac{15000}{3000}=e^{2.8t}

5=e^{2.8t}

Taking ln on both sides, we get

\ln 5=\ln e^{2.8t}

1.609438=2.8t                  [\because \ln e^x=x]

\dfrac{1.609438}{2.8}=t

0.574799=t

t\approx 0.575

Therefore, the number of bacteria will be 15,000 after 0.575 hours.

4 0
2 years ago
(Show your working) I uploaded the question
svlad2 [7]

x^2 = the first integer

(x - 1)^2 = the second integer.

x^2 - (x - 1)^2 = ?

First, let's plug a number into our equation for x.

(2)^2 - (2 - 1)^2 = ?

4 - (1)^2 = ?

4 - 1 = 3

As we can see the difference is odd but it's also the sum of the two consecutive integers.

2 + 1 = 3.

This works for all numbers. Let's plug another number into our equation for x.

(4)^2 - (4 - 1)^2 = ?

16 - (3)^2 = ?

16 - 9 = 7

4 + 3 = 7

Try any number and it will always be odd.

4 0
3 years ago
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