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scoray [572]
3 years ago
8

Frankie has $40 in his wallet. He decided to buy a pair of earrings for his mom for her birthday. He spent 25% of his money on t

he earrings. How much were the earrings?
Mathematics
1 answer:
kherson [118]3 years ago
7 0
40x.25=10
He spent 10 dollars on them
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For which sample size (n) and sample proportion (p) can a normal curve be
Nonamiya [84]

Answer:

Option c.

Step-by-step explanation:

Using the normal curve to approximate a sampling distribution:

For a sample size n and a proportion n, the normal curve can be used if:

np \geq 10 and n(1-p) \geq 10

Option a:

np = 35*0.8 = 28 > 10

n(1-p) = 35*0.2 = 7 < 10

So option a cannot be used.

Option b:

np = 65*0.9 = 58.5 > 10

n(1-p) = 65*0.1 = 6.5 < 10

So option b cannot be used.

Option c:

np = 65*0.8 = 52 > 10

n(1-p) = 65*0.2 = 13 > 10

So option c can be used, and is the answer

Option d:

np = 35*0.9 = 31.5 > 10

n(1-p) = 35*0.1 = 3.5 < 10

So option d cannot be used.

The answer is given by option c.

7 0
3 years ago
Which matrix represents the solution to this system of equations?
Xelga [282]

Answer:

1. b

Step-by-step explanation:

7 0
3 years ago
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How many hundredths in 1 whole
beks73 [17]
One hundred hundredths make up one whole.
8 0
3 years ago
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PLEASE ANSWER ASAP!!!
julsineya [31]

Answer:

The answer to your question is A) x = 1

Step-by-step explanation:

We know that f(x) = 2x + 3 and g(x) = -x + 6

But   f(x) = g(x)

Then,                          2x + 3 = - x + 6

                                   2x + x = 6 - 3

                                         3x = 3

                                          x = 3/3

                                          x = 1

The solution is circle in the graph below.

8 0
3 years ago
If possible please answer
mrs_skeptik [129]

Answer:

<h2>-3<x≤1     -or-    (-3,1]</h2>

4 0
3 years ago
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