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Ira Lisetskai [31]
3 years ago
10

Can anyone help me on the last question?

Mathematics
1 answer:
Novosadov [1.4K]3 years ago
8 0

Answer:

<h2>           0.7</h2>

Step-by-step explanation:

A' is everything what is not A

So:

    A' = {9, 10, 11, 12, 13, 15, 16}

Number of ways it can happen: |A'| = 7

Total number of outcomes: |Ω| = 10

Probability of an event happening:

                                         \bold{P(A')=\dfrac{|A'|}{|\Omega|}=\dfrac7{10}=0.7}

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Solve for x. -0.65 + 0.45x = 5.4
FinnZ [79.3K]

Answer:

x = 13.444 ... (repeating decimal) or;

x = 13 4/9

Step-by-step explanation:

-0.65 + 0.45x = 5.4

First we will add 0.65 to each 'side' of the equation.

0.65 + (-0.65) + 0.45x = 0.65 + 5.4

        0.65 + (-0.65) = 0

        0.65 + 5.4 = 6.05

Input the numbers, and now the equation looks like this:

0 + 0.45x = 6.05

Remove the zero:

0.45x = 6.05

Divide each 'side' by 0.45.

0.45x ÷ 0.45 = 6.05 ÷ 0.45

        0.45x ÷ 0.45 = 1x = x

        6.05 ÷ 0.45 = 13.444 ... repeating decimal

Input the numbers, and now the equation looks like this:

x = 13.444 ... repeating decimal

We can also write this as:

x = 13 4/9 in fraction form

3 0
3 years ago
Need help please quick
sdas [7]

Answer:

add all the angles and equal with 180°

7 0
3 years ago
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PLEASE ANSWER QUICKLY I WILL GIVE BRAINLYEST
Agata [3.3K]

Answer:

a) 17

b) 45

Step-by-step explanation:

a) 9+3 x 2^{2} - 1 x 4

use pemdas first,

2^{2}\\ = 4

3x4 = 12

1x4 = 4

now the equation is 9+12 - 4

9+12 = 21

that makes the equation 21-4

21-4 = 17

a) 17

now for b

b)

the equation would then be 9+3 x (2^{2} - 1) x 4

so youd use pemdas as always

start in the parenthases

2^{2} = 4

4-1 = 3

the equation is now 9+3 x 3 x 4

now, multiply 3x3x4

3x3 = 9

9x4 = 36

now the equation is 9+36

9+36 is 45

b) 45

hope this helped!

4 0
2 years ago
Your pool is 80 ft long by 40 ft wide and the depth is 3ft to 8ft what is the pool volume?
kumpel [21]

Answer:

Since there are 7.5 gallons in each cubic foot, multiply the cubic feet of the pool by 7.5 to arrive at the volume of the. 3.14 x 25 ft x 3 ft x 7.5 = 1766.25 gallons

Step-by-step explanation:

5 0
3 years ago
Simplify (−4.5)(−6)(5.4).<br> i need the answer pls
matrenka [14]

Answer:

145.8

Step-by-step explanation:

−4.5 x −6 x 5.4

7 0
2 years ago
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