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mario62 [17]
3 years ago
11

Write an expression Four less than the product of 3 and a number x

Mathematics
1 answer:
nekit [7.7K]3 years ago
4 0
(3 * x) - 4 is the expression.
You might be interested in
Help me please help me thank you
kow [346]

Answer: 110, 35, 70, G, J, F, E, B, A, H, C, D, I

Step-by-step explanation:

8. For number 8, you will be using the exterior angle theorem. The exterior angle theorem states that the exterior angle equals the two angles inside the given triangle. Since we have 50 and 60, you will add 50 + 60 to get 110.

9. In this problem, you shall use the vertical angle theorem. The vertical angle theorem is simply that any angles vertical from one another are congruent. So a will be also 35 degrees.

10. This is an image depicting two lines cut by a transversal, creating multiple congruent angles. With this, you will be using the alternate interior angle theorem. Alternate interior angles are angles on different sides of the transversal but inside both of the lines that were cut into, as shown above. So,  b will also equal 70 degrees.

Part B:

1. G

2. J

3. F

4. E

5. B

6. A

7. H

8. C

9. D

10. I

8 0
2 years ago
Read 2 more answers
PLS HELP I NeED to finish this
mote1985 [20]

Answer:

D. 15

Step-by-step explanation:

<em>Use proportions.</em>

<em />\frac{35}{25} = \frac{21}{x}  \\\\35x = 525\\x = 15<em />

3 0
3 years ago
The distribution of resistance for resistors of a certain type is known to be normal, with 10% of all resistors having a resista
baherus [9]

Answer:

The mean is 9.65 ohms and the standard deviation is 0.2742 ohms.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore 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 pvalue, we get the probability that the value of the measure is greater than X.

10% of all resistors having a resistance exceeding 10.634 ohms

This means that when X = 10.634, Z has a pvalue of 1-0.1 = 0.9. So when X = 10.634, Z = 1.28.

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

1.28 = \frac{10.634 - \mu}{\sigma}

10.634 - \mu = 1.28\sigma

\mu = 10.634 - 1.28\sigma

5% having a resistance smaller than 9.7565 ohms.

This means that when X = 9.7565, Z has a pvalue of 0.05. So when X = 9.7565, Z = -1.96.

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

-1.96 = \frac{9.7565 - \mu}{\sigma}

9.7565 - \mu = -1.96\sigma

\mu = 9.7565 + 1.96\sigma

We also have that:

\mu = 10.634 - 1.28\sigma

So

10.634 - 1.28\sigma = 9.7565 + 1.96\sigma

1.96\sigma + 1.28\sigma = 10.645 - 9.7565

3.24\sigma = 0.8885

\sigma = \frac{0.8885}{3.24}

\sigma = 0.2742

The mean is

\mu = 10.634 - 1.28\sigma = 10 - 1.28*0.2742 = 9.65

The mean is 9.65 ohms and the standard deviation is 0.2742 ohms.

8 0
3 years ago
Give an example of two monomials with a quotient of -3n²/m​
natima [27]
Hmmmm I’ll have to calculate this
3 0
3 years ago
Eggs sell for $1.09 per dozen at the local supermarket. If the supermarket pays $8.00 dollars her case that consist of 12 dozen
WARRIOR [948]

Answer:

B. $5.08

Step-by-step explanation:

First find out how much the supermarket pays per dozen of eggs.

$8.00 / 12 dozen cartons per case = $0.66666

It costs the supermarket approximately $0.67 per dozen

Next find out the profit per dozen of eggs sold

$1.09 store price - $0.67 price store pays = $0.42

The supermarket profits about $0.42 per dozen sold

Finally find out the profit per case of eggs

12 dozen cartons * $0.42 profit per carton = $5.04

The supermarket makes about $5.04 per case so the best answer of the choices would be B. $5.08.

3 0
3 years ago
Read 2 more answers
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