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3 years ago

An Xbox is $399.79, if

Mathematics

2 answers:

Llana [10]3 years ago

7 0

A. $19.98
b. $419.77
i think thats the answer

MakcuM [25]3 years ago

7 0

A is 19.87
b is 419.66

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Which of the following are identities? Check all that apply. A. cot2x + 1 = csc2x B. tan2x = 1 - sec2x C. sin2x = 1 + cos2x D. s

kirill115 [55]

I'll assume those are squares. We know D is an identity:

$\sin^2 x + \cos ^2 x = 1$

Dividing through by $\sin ^2 x$

$1 + \cot^2 x = \csc^2 x$

That's A.

Dividing the original through by $\cos ^2 x$

$\tan^2 x + 1 = \sec^2 x$

Not quite B, wrong sign on tangent.

C has the wrong sign on cosine squared as well.

Identities: A & D

4 0

3 years ago

The equation m = 0.3048f gives the relationship between m meters and f feet. Express 9 feet in meters. Round your answer to the

natita [175]

The equation given in the question is
m = <span>0.3048f
when f = 9 feet, then
m = </span><span>0.3048 * 9
= 2.7432 meters
Since the answer has to be shown to the nearest thousandth, so
m = 2.743.meters
The correct option among all the options that are given in the question is the third option or option "C". </span>

3 0

3 years ago

he weight of a chimpanzee, y, in pounds, x months after birth is modeled by the equation y=1.5x+8. Which represents the equation

soldi70 [24.7K]

The equation that represents x when solved is $x=\frac{y-8}{1.5}$

Given the equation that expresses the weight of a chimpanzee with respect to the months of birth as:

y = 1.5x + 8

We are to express x in terms of "y"

$y = 1.5x + 8$

Subtract 8 from both sides

$y -8= 1.5x + 8-8\\y-8 = 1.5x\\Swap\\1.5x = y - 8$

Divide both sides by 1.5

$\frac{1.x}{1.5}= \frac{y-8}{1.5} \\x=\frac{y-8}{1.5} \\$

Hence the equation that represents x when solved is $x=\frac{y-8}{1.5}$

Learn more here: brainly.com/question/21406377

8 0

3 years ago

Brian pays £180 per week in rent. His landlord decides to decrease the rent by 5%. How much rent does he pay now

ira [324]

Answer:

171

Step-by-step explanation:

180 - (5% × 180)

180 - 5% × 180

(1 - 5%) × 180

(100% - 5%) × 180

95% × 180

95 ÷ 100 × 180

95 × 180 ÷ 100

17,100 ÷ 100 = 171.

5 0

3 years ago

Which scenarios represent one quantity changing at a constant rate per unit interval relative to the other quantity?

irinina [24]

Answer:

Graphs come in all sorts of shapes and sizes. In algebra, there are 3 basic types of graphs you'll see most often: linear, quadratic, and exponential. Check out this tutorial and learn how to determine is a graph represents a linear, quadratic, or exponential function!

Step-by-step explanation:

thats all

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5 0

3 years ago