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solong [7]
3 years ago
14

Help me please I’m stuck

Mathematics
2 answers:
Anna35 [415]3 years ago
6 0

Answer:

103

Step-by-step explanation:

There is 540 degrees total in a pentagon. To find the missing angle, you must subtract all the known angles from 540. 540-100-117-105-115=103

Goryan [66]3 years ago
5 0
THE ANSWER SHOULD BE 103
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A diamond today cost ten dollars more than twice what it cost last year.The sum of the cost (last year and this year) is $2500.
nadya68 [22]

Answer:

The cost of the diamond last year is x = $ 830

Step-by-step explanation:

Let the cost of diamond last year = x

the cost of diamond present year = y

Given that diamond today cost ten dollars more than twice what it cost last year.

⇒ y = 2 x + 10  ------ (1)

The sum of the cost (last year and this year) is  = $ 2500

⇒ x + y = $ 2500 -------- (2)

Put the value of y in equation (2) from equation (1), we get

⇒ 2 x + 10 + x = $ 2500

⇒ 3 x = 2490

⇒ x = $ 830

& y = 2500 - 830

⇒ y = $ 1670

Therefore the cost of the diamond last year is x = $ 830

6 0
3 years ago
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konstantin123 [22]

Answer:

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Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Carmen has 240 action figures she wants to display in 4 bookcases. Each bookcase has 5 shelves, and each shelf gets the same num
Levart [38]

Answer:

60 books in one bookcase

12 books in one shelf

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Step-by-step explanation:

figures is one bookshelf =240/4

figures in each shelf=240/4*5

7 0
2 years ago
A fair tossed 10 times . Find the probability of obtaining (i) exactly four heads (ii) 3 heads and 7 tails (iii) at least one he
vodka [1.7K]

Answer:

0.205 ; 0.117 ; 0.999

Step-by-step explanation:

Using binomial probability distribution :

P(x =x) = nCx * p^x * (1 - p)^(n - x)

Probability of success, p = 0.5

P(x = 4) = 10C4 * 0.5^4 * 0.5^6

P(X = 4) = 0.205078125

B.) 3 heads and 7 tails

P(X = 7) = 10C7 * 0.5^7 * 0.5^3

P(X = 7) = 120 * 0.0009765625

P(X = 7) = 0.117

P(atleast one head)

P(x greater than equal to 1) = p(x =1) +... P(x = 10)

Using a binomial probability calculator :

P(x greater than equal to 1) = 0.999

3 0
3 years ago
Consider the linear equation 2/5x+y=11. will you choose to fix x or y?
sukhopar [10]
Y is the easiest to fix because it has no coefficient, and is therefore the easiest to set on the other side of the equation by itself
4 0
3 years ago
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