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e-lub [12.9K]
2 years ago
7

What is the domain of 3x^2-x-2

Mathematics
1 answer:
pshichka [43]2 years ago
5 0

Answer:

All real numbers

Step-by-step explanation:

There is no real number that makes the expression undefined, therefore the domain would be all real numbers.

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The equivalent ratios show how many teaspoons there are in 5 cups. What method can be used to convert 1 cup to teaspoons?
yarga [219]

A. multiply 1,200 by 5

Step-by-step explanation:

Because to convert it to you would have to convert it you'd have to multiply the number above to receive your sum.

6 0
3 years ago
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Please help me.<br> If △NMK ≅ △TRP, then answer the following questions:
Natalka [10]

Answer:

Answers are below.

Step-by-step explanation:

a. △MNK ≅ △RTP

b. TR ≅ NM

c. x = 7

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3 0
2 years ago
IF Triangle DEF JKL, find KL.
s344n2d4d5 [400]

Answer:

b

Step-by-step explanation:

Since the triangles are similar then the ratios of corresponding sides are equal, that is

\frac{KL}{EF} = \frac{JK}{DE} , substitute values

\frac{6x+3}{x+11} = \frac{25}{10} ( cross- multiply )

10(6x + 3) = 25(x + 11) ← distribute parenthesis on both sides

60x + 30 = 25x + 275 ( subtract 25x from both sides )

35x + 30 = 275 ( subtract 30 from both sides )

35x = 245 ( divide both sides by 35 )

x = 7

Then

KL = 6x + 3 = 6(7) + 3 = 42 + 3 = 45 → b

3 0
2 years ago
Here are the prices of five new pairs of hockey skates, in dollars: 59, 60, 65, 99, 175. The standard deviation is about $49. If
Phoenix [80]

Answer:

The standard deviation of the new data will be increased as compared to the previous standard deviation of the data.

Step-by-step explanation:

The prices are given to be : 59, 60, 65, 99, 175

Standard deviation = $49

Now, if we add or subtract any constant value to each of the terms then the standard deviation remains unchanged.

But, we add a new price in the given data that is $450

\text{New standard deviation = }\sqrt{\frac{\sum (\bar{x}-x_i)^2}{n}}\\\\\bar{x}\text{ is the mean of data after adding 450 and}\\x_i\text{ are the price values of the sample data}

Hence, Standard deviation is calculated to be 139.5

Therefore, the standard deviation of the new data will be increased as compared to the previous standard deviation of the data.

6 0
3 years ago
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Which of the following are identities? Check all that apply.
gulaghasi [49]

Answer:

A B and C

Step-by-step explanation:

Hopefully this helps

6 0
3 years ago
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