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rusak2 [61]
2 years ago
8

2/7 divided by 3/4 plssss I need help

Mathematics
1 answer:
AURORKA [14]2 years ago
4 0

Answer:

8/21

Step-by-step explanation:

im not sure if you wanted the decimal form but u could look up for that lol I hope this helps tho

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Which graph represents the piecewise-defined function?
kifflom [539]

Answer: The first option is correct.

Explanation:

The given piecewise function is,

y=\begin{cases}-\frac{4}{5}x-3 & \text{ if } x

From the piecewise function we can say that if x<0, then

f(x)=-\frac{4}{5}x-3

If x\geq2, then

f(x)=3x-10

Since the f(x) is defined for x<0 and x\geq2, therefore the function f(x) is not defined for 0\leq x.

In the graph 2, 3 and 4 for each value of x there exist a unique value of y, therefore the function is defined for all values of x, which is not true according to the given piecewise function.

Only in figure the value of y not exist when x lies between 0 to 2, including 0. It means the function is not defined for 0\leq x, hence the first option is correct.

5 0
3 years ago
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A pair of jeans has a price tag marked 50$. The store is having a one-day sale in which everything in the store is $22.22.How mu
kodGreya [7K]
Your answer is B. since 50-22.22 is 27.78

5 0
3 years ago
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X + 9y = 8 x − 4y = –18
loris [4]

Step-by-step explanation:

x + 9y =  - 18 \\ 8x - 4y =  - 18 \\ x =  - 18 - 9y \\ 8( - 18 - 9y) - 4y =  - 18 \\  - 144 - 72y - 4y =  - 18 \\  - 76y = 126 \\ y =  - 1.66 \\

x =  - 18 - 9y \\ x =  - 18 - 9( - 1.66) \\ x =  - 18 + 14.94 \\ x =  - 3.06

5 0
2 years ago
The Wilson family had 5 children. Assuming that the probability of a child being a girl is 0.5, find the probability that the Wi
Dafna11 [192]

Answer:

0.813

0.500

Step-by-step explanation:

Use binomial probability.

P = nCr p^r q^(n−r)

where n is the number of trials,

r is the number of successes,

p is the probability of success,

and q is the probability of failure (1−p).

In this problem, n = 5, p = 0.5, and q = 0.5.

"At least 2 girls" means r = 2, 3, 4, or 5.

Or, we can use the complement.

P(at least 2 girls) = 1 − P(at most 1 girl)

P(at least 2 girls) = 1 − P(r=0 or r=1)

P(at least 2 girls) = 1 − ₅C₁ (0.5)¹ (0.5)⁵⁻¹ − ₅C₀ (0.5)⁰ (0.5)⁵⁻⁰

P(at least 2 girls) = 1 − 5 (0.5) (0.5)⁴ − 1 (1) (0.5)⁵

P(at least 2 girls) = 1 − 6 (0.5)⁵

P(at least 2 girls) ≈ 0.813

"At most 2 girls" means r = 0, 1, or 2.

P(at most 2 girls) = P(r=0, r=1, or r=2)

P(at most 2 girls) = ₅C₀ (0.5)⁰ (0.5)⁵⁻⁰ + ₅C₁ (0.5)¹ (0.5)⁵⁻¹ + ₅C₂ (0.5)² (0.5)⁵⁻²

P(at most 2 girls) = 1 (1) (0.5)⁵ + 5 (0.5) (0.5)⁴ + 10 (0.5)² (0.5)³

P(at most 2 girls) = 16 (0.5)⁵

P(at most 2 girls) = 0.500

4 0
3 years ago
The sum of the measures of the interior angles of a polygon is 1440 How many sides does it have ________ sides
Rufina [12.5K]
The only shape that has that much is a decagon 10 sides. t<span>he </span>sum<span> of the interior </span>angles of a  Regular Decagon is 1440 degrees. 
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2 years ago
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