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Marianna [84]
3 years ago
5

Evaluate the expression w² - v + 1 for w = -2 and v = -8.

Mathematics
2 answers:
kaheart [24]3 years ago
7 0

Answer:

13

Step-by-step explanation:

-2(-2) - (-8) + 1

4 + 8 + 1 = 13

Roman55 [17]3 years ago
6 0

Answer:

13

Step-by-step explanation:

cause i did it and it was right

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Find a rectangular equation. X = 3tan t, Y = 2sec t, for in (−π /2 , π /2 )
anzhelika [568]

Answer:

Step-by-step explanation:

x= 3tan(t) \rightarrow tan(t) = \frac{x}{3} \rightarrow tan^2(t) = \frac{x^2}{9}

y= 2sec(t) \rightarrow sec(t) = \frac{y}{2} \rightarrow sec^2(t) = \frac{y^2}{4}

sec^2(t) -tan^2(t) =1

\frac{y^2}{4} -\frac{x^2}{9} =1

is the rectangular equation of the parameter functions.

also, it is a hyperbola. The condition -\pi/2 < t limit x from 0 to infinitive

7 0
3 years ago
Identify the type of data (qualitative/quantitative) and the level of measurement for the following variable. Explain your choic
AleksAgata [21]

Answer:

Option  C. Quantitative, because numerical values, found by either measuring or counting, are used to describe the data.              

Step-by-step explanation:

We are given the following in the question:

Variable: Final exam scores (from 0 to 100) for graduating high school seniors.

The following variable is a quantitative variable.

Quantitative variable:

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  • Descriptive terms are not used to describe them.
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Since final scores have numerical values and are counted, they are quantitative variables.

Option  C. Quantitative, because numerical values, found by either measuring or counting, are used to describe the data.

Level of measurement:

A score of zero means no true existence for score. That is true zero exist.

Thus, it is ratio because difference between the values in data can be compared meaningful and they have a true zero.

7 0
3 years ago
George wishes to increase the percent of acid in 50ml of a 15% acid solution to 25% acid, how much pure acid must he add?
sdas [7]
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Read 2 more answers
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ser-zykov [4K]
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3 years ago
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guapka [62]

Answer:

TNX for da points

Step-by-step explanation:

ahhhhhhhhhhhhhhhhhh

3 0
3 years ago
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