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Roman55 [17]
3 years ago
8

What properties of equality do you need to use to solve the equation 7.8x- 6.9 =55.5

Mathematics
1 answer:
Bumek [7]3 years ago
7 0

Answer:

The answer is 8

Step-by-step explanation:

First add 6.9 to 55.5. this is because you are subtracting  6.9 from 7.8x (8). now you need to divide 7.8 from 6.9 + 55.5 and you will get your answer 8

Hope this helps

Pls mark brainliest, I really need it

- massmaster34

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Sally has 24 cookies. She has to share the cookies with 3 friends. How can they split them evenly?
djverab [1.8K]

Answer:

They each get 8 cookies

Step-by-step explanation:

24 divided by 3 is 8. There are other ways if the question allows there to. be some cookies left over.

6 0
2 years ago
Samples of rejuvenated mitochondria are mutated (defective) in 1% of cases. Suppose 18 samples are studied, and they can be cons
Temka [501]

Probability that no samples are mutated is 0.83, probability that at most one sample is mutated is 0.9812 and probability that more than half the samples are mutated is 0.

Given percentage of rejuvenated mitochondria defective is 1%, and sample size is 18.

Binomial distribution is the probability of exactly x successes on n repeated trials and X can have two outcomes.

P(X=x)=C_{n,x} p^{x}(1-p)^{n-x}

percentage of defective rejuvendated mitochondria=1%

p=0.01

Sample size=18

n=18

a) No samples are mutated

This means P(X=0)=C_{18,0}(0.01)^{0} (0.99)^{18}

=0.83

b) At most one sample is mutated.

P(X<=1)=P(X=0)+P(X=1)

so,

P(X=0)=C_{18,0} (0.01)^{0}  (0.99)^{18}

=0.83

P(X=1)=C_{18,1}(0.01)^{1} (0.99)^{17}=

=0.1512

P(X<=1)=0.83+0.1512

=0.9812

c) More than half the samples are mutated.

P(X>9)=P(X=10)+P(X=11)+P(X=12)+P(X=13)+P(X=14)+P(X=15)+P(X=16)+P(X=17)+P(X=18)

Using two decimals digits precision all will be 0.

Hence Probability that no samples are mutated is 0.83, probability that at most one sample is mutated is 0.9812 and probability that more than half the samples are mutated is 0.

Learn more about probability at brainly.com/question/24756209

#SPJ4

4 0
2 years ago
What is the product of 3.8 and .69?​
Verdich [7]

Answer:

2.622

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
What is z? -0.25z = -1.25
lora16 [44]
It is (positive) five. divide -1.25 by -0.25.
3 0
3 years ago
Read 2 more answers
Don’t mind the number 34 but what I need help?
dybincka [34]
U will first need to collect the like terms,
x+16>-5x+4
-5x will go to the other side becoming 5x while 16 while also cross the other side becoming -16
x+5x>4 -16
6x> when 4 is taken out from -16 it becomes - 12
6x>-12 when divided the answer obtained will be -2
3 0
3 years ago
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