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kicyunya [14]
2 years ago
12

F(x)=-2x+6 f(-5) step by step

Mathematics
1 answer:
zaharov [31]2 years ago
4 0

Answer:

f(x=16

Step-by-step explanation:

f(-5)=-2(-5)+6

f(-5)=10+6

f(-5)=16

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Divide<br><br> -5/9 by 5/7 :<br><br> a)-7/9<br> b)-9/7<br> c)7/9<br> d)9/7
Reil [10]

Answer:

a

Step-by-step explanation:

-5/9 ÷ 5/7

= -5/9 × 7/5

= -7/9

The answer should be a

4 0
2 years ago
Suppose the lifetime of a cell phone battery is normally distributed with a mean of 36 months and a standard deviation of 2 mont
solong [7]

Answer:

They should guarantee the lifetime of their batteries for 32 months.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Mean of 36 months and a standard deviation of 2 months.

This means that \mu = 36, \sigma = 2

If the company wants to replace no more than 2% of all batteries, for how many months should they guarantee the lifetime of their batteries?

The guarantee should be the 2th percentile of lengths, which is X when Z has a pvalue of 0.02. So X when Z = -2.054.

Z = \frac{X - \mu}{\sigma}

-2.054 = \frac{X - 36}{2}

X - 36 = -2.054*2

X = 31.89

Rounding to the closest month, 32.

They should guarantee the lifetime of their batteries for 32 months.

3 0
2 years ago
The graph shows a proportional relationship.
koban [17]
The unit rate is 4.5
8 0
3 years ago
1. How many parts have the same color? 2. Identify the colors that occupies the first three largest part.
Jlenok [28]

9514 1404 393

Answer:

  1. no parts have the same color (0)
  2. yellow, blue, red
  3. percentages can be written in several forms: fraction, decimal, for example. The sectors can also be identified by their angle measures.
  4. see attached

Step-by-step explanation:

1. The seven different sectors have seven different colors. No parts have the same color.

2. The attached table lists the sectors in decreasing order of size. The largest three are yellow, blue, red.

3. Percentages can be written a number of ways. They can be written as decimal numbers, or as fractions. In a pie chart, the sectors can also be given an angle measure.

4. Fraction equivalents of the percentages are shown in the attached.

5. Reduce fraction equivalents of the percentages are shown in the attached.

4 0
2 years ago
Evaluate square root of 16 minus x end root when x = 8.
My name is Ann [436]
\sqrt{16-x}
x=8
16-8=8
\sqrt{8}

Use a calculator to find the square root of 8.

7 0
3 years ago
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