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zhuklara [117]
3 years ago
7

Given h(x) = 5x - 1. find x if h(x) = 9

Mathematics
1 answer:
zvonat [6]3 years ago
8 0

Answer:

2

Step-by-step explanation:

9 = 5x -1

x = 10/5

x = 2

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What is equivalent to square root of 8
vredina [299]

Answer:

2 radical 2

Step-by-step explanation:

8 0
4 years ago
What is the arc measure of a sector with area 38.485ft squared and radius is 7?
gtnhenbr [62]
I think its 90 . I'm not 100% sure though.
8 0
4 years ago
What is the probability that the mean duration of the 24 rowers with idna exceeds 63 minutes?
statuscvo [17]

Answer:

Step-by-step explanation:

Given that: Training-session duration of female rowers with normal iron status is Normally distributed, with mean 69 minutes and standard deviation 18minutes.

Solution:

z score shows the relationship between sample means. The z score is used to determine by how many standard deviations the raw score is above or below the mean. It is given by the formula:

z=\frac{x-\mu}{\sigma}\\\\for\ sample(n):\\\\z=\frac{x-\mu}{\sigma/\sqrt{n} }  \\\\where\ \mu=mean,\sigma=standard\ deviation,x=raw\ score

Given that μ = 69 minutes, σ = 18 minutes, n = 24

For x > 63 minutes:

z=\frac{x-\mu}{\sigma / \sqrt{n} } =\frac{63-69}{18/\sqrt{24} }=-1.63

From the distribution table, P(x > 63) = P(z > -1.63) = 1 - P(z < 1.63) = 1 - 0.0516 = 0.9484

7 0
3 years ago
Find the geometric mean of 14 and 20.
Tom [10]

Answer:

16.73 to nearest hundredth.

Step-by-step explanation:

The geometric mean  of x and y is √xy.

So out geometric mean is √(14*20)

= √280

= 16.7332

7 0
3 years ago
The distance between the school and the park is 6 km. There are 1.6 km in 1 mile.How many miles apart are the school and the par
insens350 [35]
As stated 1 mile equals to 1.6 km,
so do calculation to get the 6 km

1 mile = 1.6 km

Then try to divide the 6 km with 1 mile value in km which is 1.6 km so that we know exactly how many miles required to get 6 km

6 \:  \div  \: 1.6 \:  =  \: 3.75
So the answer is 3.75 miles

To prove this

If 1 mile = 1.6,
Then,
3 miles = (1.6 x 3 ) which produce 4.8 km
0.75 mile = ( 0.75 x 1.6 ) equals to 1.2 km

4.8km + 1.2km = 6km , which proves that
3 miles + 0.75 mile = 6km
7 0
4 years ago
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