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2 years ago

Please help me out with this! :> ~Narancia

Mathematics

2 answers:

Deffense [45]2 years ago

8 0

Answer:

Step-by-step explanation:

you want to see how many times 800 can go into your number so the answer would be 70

kifflom [539]2 years ago

5 0

Answer:

7 the answer is 7

Step-by-step explanation:

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Rachel made $176 for 11 hours of work.

elena55 [62]

Answer:

8 hours

Step-by-step explanation:

11 hours = $176

⇒ 1 hour = $176 ÷ 11 = $16

To determine how many hours she would have to work to make $128, divide $128 by $16:

⇒ number of hours = $128 ÷ $16

= 8 hours

6 0

1 year ago

Read 2 more answers

What is 12 = -7f-9 ?

sattari [20]

The answer is -3 because you have to add 9 to both sides, then you have to divide by -7 to both sides to get your answer: f = -3
If you are not sure if the answer is right, then plug the answer in the problem to see your answer is correct or not.

8 0

3 years ago

At a small college somewhere on the East coast, 20% of the girls and 30% of the boys smoke at least once a week.

Nezavi [6.7K]

Answer: Required mean would be 15.

Step-by-step explanation:

Since we have given that

Number of girls G= 75

Number of boys B= 100

Probability that girls smoke = P₂ = 0.20

Probability that girls don't smoke = P'₂=1-0.20=0.80

Probability that boys smoke = P₁ = 0.30

Probability that boys don't smoke = P'₁=1-0.30=0.70

We need to find the mean of the sampling distribution of the difference in the sample proportion of girl smokers and boys smokers.

So, it becomes,

$E[P_1-P_2]=E[P_1]-E[P_2]\\\\=B\times P_1-G\times P_2\\\\=100\times 0.30-75\times 0.20\\\\=30-15\\\\=15$

Hence, required mean would be 15.

6 0

2 years ago

Marcus goes to the park, which is 4 miles away. He walks 5/12 of the way and then jogs the rest of the way. How many miles does

lions [1.4K]

Key words of this equation are of which means multiply. This means that essetnially it is expressing 4/1 multiplied by 5/12 which is 20/12 which is 1.7 (rounded)

3 0

3 years ago

D. $3.25 A cell phone at Store A costs $10 less than twice the cost of the same cell phone at Store B. If the phone costs $49.99

BlackZzzverrR [31]

$\begin{gathered} At\text{ Store B = x = \$49.9} \\ \text{while the same cell phone in Store A cost }=\text{ \$2x-\$10} \\ \text{ =\$ 2(49.9) - \$10 } \\ \text{ = \$99.8 - \$10} \\ \text{ =\$89.8} \end{gathered}$

4 0

10 months ago