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2 years ago

Idk what to do.Please help me!

Mathematics

2 answers:

dybincka [34]2 years ago

8 0

$\frac{3}{4} \frac{9}{x}$ = $\frac{27}{4}$

storchak [24]2 years ago

5 0

The x is 4 and the answer is 36/4 because 9 is a whole and we have to divide it.

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At a chocolate store, 70% of the items are dark chocolate and 30% are milk chocolate. Also 20% of the items have nuts and 80% ar

Delvig [45]

Answer:

A. 13%

Step-by-step explanation:

let's suppose there's 1000 bars of chocolate in general

70 % dark = 700 dark choco bars

30 % milk = 300 milk choco bars

20 % have nuts = 200 bars have nuts

80 % don't have nuts = 800 bars don't have nuts

if 90 % of dark chocolate bars don't have nuts, that means 630 dark chocolate bars don't have nuts, but 70 have nuts

200 bars in general have nuts, if only 70 dark chocolate bars have nuts,

200 - 70 = 130

130 = 13%

7 0

2 years ago

HELP PLEASE ASAP!! (10 pts)

Mandarinka [93]

Answer:

is there a question or picture?

8 0

1 year ago

What are the next three terms in the sequence?

Ne4ueva [31]

-1 + 10 = 9 +10 = 19 + 10 = 29 so the next would be 39 because you add ten to it and there is only one answer with 39 so it's C

7 0

2 years ago

Read 2 more answers

How many Solutions does p + 9 = 2p - 3 have?

Artist 52 [7]

Answer:

P=12

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

The time required for an automotive center to complete an oil change service on an automobile approximately follows a normal di

xxMikexx [17]

Answer:

a) Therefore 92.64% of customers receive the service for half-price.

b) Therefore it would take 8.52 minutes

Step-by-step explanation:

Given that ime required for an automotive center to complete an oil change service on an automobile approximately follows a normal distribution with:

mean (μ) = 15 minutes

Standard deviation (σ) = 3.5 minutes

a) The z score is given by the equation:

$z=\frac{x-\mu}{\sigma}$

Since the service will take no longer than 20 minutes,

$z=\frac{x-\mu}{\sigma}=\frac{20-15}{3.5} = 1.43$

Using the probability table to get the probability of the z score

percent of customers receive the service for half-price = P(X < 20) = P(z < 1.43) = 0.9236 = 92.64%

Therefore 92.64% of customers receive the service for half-price.

b) Since the probability is 3% = 0.03, this corresponds with a z score of -1.88

Therefore:

$z=\frac{x-\mu}{\sigma}=\frac{x-15}{3.5} =-1.88$

$\frac{x-15}{3.5} =-1.88$

${x-15} =-6.58\\x=-6.58+15=8.52\\x=8.52 minutes$

Therefore it would take 8.52 minutes

6 0

2 years ago