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1 year ago

Brooklyn needs to earn $14 more dollars to have $32. How much money does Brooklyn have now?

3 answers:

7 0

: Brooklyn has 18

If you take 14 and subtract it from 32 you will get 18. by using variables 14 + = 32. then solve it at a 1 step equation

Flauer [41]1 year ago

5 0

Answer:

The correct equation is 14 +m =32

To solve the equation, subtract 14 from both sides

Step-by-step explanation:

Guest1 year ago

0 0

There are 3 answers to this question not 2.
The correct equation is 14 +m =32 To solve the equation
Subtract 14 from both sides.
The variable, m, is equal to the amount of money Brooklyn has now.

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You asked the question “How many amusement parks have you visited this summer?” Four people said 1, seven people said 2, three s

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2 years ago

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To babysit one child, Fernando charges $10 to drive to the appointment plus $4 per hour. He saves 30% of the total amount he ear

Kazeer [188]

Answer: 10 hours

Explanation:

1) Fernando's earnings:

10 + 4h ← 10 is a fix charge, h is the number of hours and 4 is the rate per hour

2) Fernando's savings

0.30 (10 + 4h) ← 30% = 30 / 100 = 0.3

3 + 1.2h ← distributive property

3) Brenna's earnings

6h ← h is the number of hours, 6 is the rate per hour

4) Brenna's savings

0.25(6h) ← 25% = 25/100 = 0.25

1.5h ←0.25 × 6 = 1.5

5) Equal savings

3 + 1.2h = 1.5h

1.5th- 1.2h = 3 ← transpose terms

0.3h = 3 ← combine like terms

h = 3 / 0.3 = 10 ← divide by 0.3

Answer: h = 10

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2 years ago

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An example problem in a Statistics textbook asked to find the probability of dying when making a skydiving jump.

MArishka [77]

Answer:

(a) 0.999664

(b) 15052

Step-by-step explanation:

From the given data of recent years, there were about 3,000,000 skydiving jumps and 21 of them resulted in deaths.

So, the probability of death is $\frac{21}{3000000}==0.000007$ .

Assuming, this probability holds true for each skydiving and does not change in the present time.

So, as every skydiving is an independent event having a fixed probability of dying and there are only two possibilities, the diver will either die or survive, so, all skydiving can be regarded as is Bernoulli's trial.

Denoting the probability of dying in a single jump by $q$ .

$q=7\times 10^{-6}=0.000007$ .

So, the probability of survive, $p=1-q$

$\Rightarrow p=1-7\times 10^{-6}=0.999993.$

(a) The total number of jump he made, n=48

Using Bernoulli's equation, the probability of surviving in exactly 48 jumps (r=48) out of 48 jumps (n=48) is

$=\binom(n,r)p^rq^{n-r}$

$=\binom(48,48)(0.999993)^{48}(0.000007)^{48-48}$

$=(0.999993)^{48}=0.999664$ (approx)

So, the probability of survive in 48 skydiving is 0.999664,

(b) The given probability of surviving =90%=0.9

Let, total $n$ skydiving jumps required to meet the surviving probability of 0.9.

So, By using Bernoulli's equation,

$0.9=\binom {n }{r} p^rq^{n-r}$

Here, r=n.

$\Rightarrow 0.9=\binom{n}{n}p^nq^{n-n}$

$\Rightarrow 0.9=p^n$

$\Rightarrow 0.9=(0.999993)^n$

$\Rightarrow \ln(0.9)=n\ln(0.999993)$ [ taking $\log_e$ both sides]

$\Rightarrow n=\frac {\ln(0.9)}{\ln(0.999993)}$

$\Rightarrow n=15051.45$

The number of diving cant be a fractional value, so bound it to the upper integral value.

Hence, the total number of skydiving required to meet the 90% probability of surviving is 15052.

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marissa [1.9K]

100 total people......35 exercise in the morning....45 in the afternoon...and 20 at night

Jim is correct.....
35/100 is the ratio of people who exercise in the morning to total people.
45/100 is the ratio of afternoon exercisers to total people
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2 years ago

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Finn and Ellie sell oranges at a produce stand. Finn earns $5 for each crate of oranges he sells. At the end of the week, Ellie

Alex777 [14]

Answer:

Step-by-step explanation:

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1 year ago