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3 years ago

Hope someone can.help.me with this

Mathematics

1 answer:

Serga [27]3 years ago

6 0

68+33+34+10= 145 m

then your cm's

700+400= 11 m

145+11= 156 m

then we need to add half of the total circumference of that circle which we can find with the provided 17 m radius

Now C =2(3.14)^r

in this case C = 106.81 m

106.81/2= 53.405 m

this can then be added to our previous sum of 156 m

156 + 53.405 = 209.405 m as the total perimeter !

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Which fraction has a value that's equal to 3/4? A. 4/3 B. 12/12 C. 9/16 D. 12/16

Radda [10]

Reduce all of the mutiple choices

A. 4/3 . It is greater than 3/4. 4/3 as a decimal is 1.333. 3/4= 0.75

B. 12/12. 12/12=1. 1 is greater than 3/4

C. 9/16. Cannot reduce the fraction.

D. 12/16 divide by 4 for the numerator and denominator. 12/4=3 , 16/4= 4

Answer: D. 12/16

8 0

3 years ago

Jason inherited a piece of land from his great-uncle. Owners in the area claim that there is a 45% chance that the land has oil.

Licemer1 [7]

So,

We are trying to find the compound probability of there BEING oil and the test predicting NO oil.

The percent chance of there actually being oil is 45%. We can convert this into fraction form and simplify it.

45% --> $\frac{45}{100}$

$\frac{45}{100}--\ \textgreater \ \frac{3*3*5}{2*2*5*5}$

$\frac{3*3*5}{2*2*5*5}--\ \textgreater \ \frac{3*3}{2*2*5}$

$\frac{3*3}{2*2*5}--\ \textgreater \ \frac{9}{20}$

That is the simplified fraction form.

The kit has an 80% accuracy rate. Since we are assuming that the land has oil, we need the probability that the kit predicts no oil.

The probability that the kit detects no oil will be the chance that the kit is not accurate, which is 20% (100 - 80 = 20). We can also convert this into fraction form and simplify it.

20% --> $\frac{20}{100}$

$\frac{20}{100}--\ \textgreater \ \frac{2}{10}$

$\frac{2}{10}--\ \textgreater \ \frac{1}{5}$

That is the probability of the kit not being accurate (not predicting any oil).

To find the compound probability of there being oil and the kit not predicting any oil, we simply multiply both fractions together.

$\frac{9}{20}*\frac{1}{5}$

$\frac{9}{20*5}$

$\frac{9}{100}$

So the probability of there BEING oil and the kit predicting NO oil is 9 in 100 chances.

3 0

3 years ago

Read 2 more answers

Mary will rent a car for the weekend. She can choose one of two plans. The first plan has no initial fee but costs $0.70 per mil

AlexFokin [52]

Mary would have to drive 750 for the plans to be the same.

7 0

3 years ago

Read 2 more answers

1. Refer to the equation 3x − 5y = 15. (a) Create a table of values for at least 4 points. Show your work on how you found the v

Ann [662]

Answer:

(0, 3 ), (5, 0), (10, -3), (15, -6)

Step-by-step explanation:

3x − 5y = 15

-5y = 3x + 15

y = $-\frac{3}{5} x + 3$

Point 1: (0, 3 )

y = -3/5(0) + 3

y = 0 + 3

y = 3

Validate:

3 = -3/5(0) + 3

3 = 3

Point 2: (5, 0)

y = -3/5(5) + 3

y = -3 + 3

y = 0

Validate:

0 = -3/5(5) + 3

0 = 0

Point 3: (10, -3)

y = -3/5(10) + 3

y = -6 + 3

y = -3

Validate:

-3 = -3/5(10) + 3

-3 = -3

Point 4: (15, -6)

y = -3/5(15) + 3

y = -9 + 3

y = -6

Validate:

-6 = -3/5(15) + 3

-6 = -6

6 0

3 years ago

Read 2 more answers

Wilbur sold half of his comic books and then bought fourteen more. he now has 24. how many did he begin with?

rosijanka [135]

First, subtract 24 - 14 to get how many books he had after he sold half of his collection and bought 14 more:

24 - 14 = 10

10 = number of books after he sold half of his collection.

Now, you need to multiply 10 x 2, because you need to find the original number of comic books:

10 x 2 = 20

He originally had 20 comic books.

An equation you could use for this question is:

2(24 - 14) = x. (X = number of comic books)

Hope this helps!!
~Kiwi

7 0

3 years ago