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Contact [7]
3 years ago
12

ANSWER ALL OF THEM PLEASE

Mathematics
1 answer:
Elenna [48]3 years ago
3 0
Number 1 is 1. Because it's a number pattern 10-3=7.Then 7-3=4.Finally 4-3=1.
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Jonathan's piggy bank contains 20 nickels, 30 quarters, and 50 one-dollar coins. He picks 20 coins from the bank at random; 12 o
sergejj [24]

Answer:

Theoretical probability: 50/100 or 50%

Experimental probability: 12/20 or 60%

Step-by-step explanation:

Let's find out both probabilities asked.

Theoretical probability:

In the whole bank, here are 100 coins (20 nickels + 30 quarters + 50 one-dollars), among which there are 50 one-dollar coins. So the probability to pick up a one-dollar coin is 50 out 100, so...

TP = 50/100 or 50%

Experimental probability:

For the experimental probability, we know Jonathan picked out 20 coins, out of which 12 were one-dollar coins, so the probability is 12 out of 20...

EP = 12 / 20 = 60%

3 0
3 years ago
Find the unknown length x in the right triangle, to the nearest tenth .
VARVARA [1.3K]

Answer:

x = 11.7

Step-by-step explanation:

sin of an angle is opposite/hypotenuse

sin 38 = x/19

x = 19 sin 38

x = 11.7

You need to memorize the definitions of all the trig functions and then this type of problem will be easy for you.

8 0
3 years ago
Which function has a domain of all real numbers?
Alona [7]

Answer:

B.

Step-by-step explanation:

B.  Because the others have exponents whose denominators are even so the  results of , for example x^1/2,  if x is negative is not defined.

For example:

For A, when x  is -4,  (-4)^1/2  is not real.

For B, when x = -4, (2*-4)^ 1/3 = -8^(1/3) =  = -2.

3 0
3 years ago
Read 2 more answers
What does (b + 3) + 6= ?
Gekata [30.6K]

Answer:

(b + 3) + 6 = <u>b + 9</u>

Explanation:

The order in which you add numbers together doesn't matter.

6 0
3 years ago
Can someone help me pretty please!!!
Oksi-84 [34.3K]
When the input is -5 , the output is 30
8 0
3 years ago
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