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Nina [5.8K]
3 years ago
15

What is the answer ?

Mathematics
2 answers:
Pachacha [2.7K]3 years ago
5 0

Answer:

y =  -5/6

Step-by-step explanation:

7y - 3y + 2 = -8y - 8

12y + 2 = -8

12y = -10

y = -10/12 = -5/6

givi [52]3 years ago
4 0

-7y -3y +2 = -8y-8

-10y +2 = -8y-8

-10y +8y = -8 -2

-2y = -10

2y = 10

y = 10/2 = 5

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Dvide £117 in the ratio 5:4
kupik [55]

Answer:

65:52

Step-by-step explanation:

5 + 4=9

117/9=13

13*5=65

13*4=52

to make sure the answer is right 65+52=117

so the answer is 65:52

3 0
3 years ago
Sixty percent of U.S. adults trust national newspapers to present the news fairly and accurately. You randomly select nine U.S.
Pavel [41]

Answer:

a) 0.251

b) 0.483

c) 0.0994

Step-by-step explanation:

We are given the following information:

We treat adult adults trusting national newspapers to present the news fairly and accurately as a success.

P(Adult trust) = 60% = 0.6

Then the number of adults follows a binomial distribution, where

P(X=x) = \binom{n}{x}.p^x.(1-p)^{n-x}

where n is the total number of observations, x is the number of success, p is the probability of success.

Now, we are given n = 9

a) exactly five

P(x = 15) = \binom{9}{5}(0.6)^{5}(1-0.6)^{9-5} = 0.2508 \approx 0.251

b) at least six

We have to evaluate

P(x \geq 6) = P(x = 6) + P(x = 7) + P(x=8) + P(x=9) \\= \binom{9}{6}(0.6)^6(1-0.6)^3 + \binom{9}{7}(0.6)^7(1-0.6)^2 + \binom{9}{8}(0.6)^8(1-0.6)^1 +\binom{9}{9}(0.6)^9(1-0.6)^0\\= 0.482609 \approx 0.483

c) less than four

We have to evaluate

P(x < 4) = P(x = 0) + P(x = 1) + P(x=2) + P(x=3) \\= \binom{9}{0}(0.6)^0(1-0.6)^9 + \binom{9}{1}(0.6)^1(1-0.6)^8 + \binom{9}{2}(0.6)^2(1-0.6)^7 +\binom{9}{3}(0.6)^3(1-0.6)^6\\= 0.099352 \approx 0.0994

3 0
3 years ago
WILL REWARD BRAINLIEST
Mashutka [201]

Answer:

Option A. is the correct option.

Step-by-step explanation:

If a number is divisible by 5 it is not necessary that the number will be divisible by 10.

For example: 25 is the number divisible by 5 but not divisible by 10.

Or in other words a number divisible by 5 should be even to be divisible by 10.

So for the conditional statement : A number is divisible by 10 if and only if it is divisible by 5 will be false because any one out of these two statements is false. We know biconditional is true only when both the statements are true or false means both the statements should have same truth value.

Therefore Option A. is the correct option.


8 0
3 years ago
Read 2 more answers
If Doris paid $24.30 for 8.1 pounds of Swiss cheese, what was the price of 1
lesantik [10]
It should be 3, I’m not sure
3 0
3 years ago
YESSS love struggling 7th grade math problem ......... help me
Dimas [21]

Answer:

x = 20

ABC = 85

BCA = 81

CAB = 14

Step-by-step explanation:

I answered your other question, so basically just read the explanation there cuz I'm too lazy to write it again :P

4 0
3 years ago
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