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velikii [3]
3 years ago
15

PLEASE HELP....

Mathematics
2 answers:
astraxan [27]3 years ago
7 0

Answer:

Step-by-step explanation:

If you treat 90° as 1 unit on the graph, then

P(1,0) corresponds to (0,0) and (360,0) on the sin graph (say (0,0) though)

P(0,1) corresponds to (90,1) on the sin graph

P(-1,0) corresponds to (180,0) on the sin graph

P(0,-1) corresponds to (270,-1) on the sin graph

NeX [460]3 years ago
4 0

Answer:

(0,0)

(90,1)

(180,0)

(270, -1)

Step-by-step explanation:

on edg... good luck!!!

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Which of the following are identities?
podryga [215]

Answer:

A. III only

Step-by-step explanation:

In mathematics, an identity is one of the characteristics of algebraic expressions.

Given variable a and b in an algebraic expression, an identity is defined as an equality that remains the same no matter the values that we choose for either variable a or b.

Identity in mathematics makes it very easy to solve algebraic expressions. The two sides of an identity in an algebra can easily be exchanged for each other.

In the above question, we are given 3 Options.

I) 3(5 + 2x) = 15 + 6x

II) y = x + 3

III) (x² - y²) = (x + y) (x - y)

Option I) 3(5 + 2x) = 15 + 6x

Is showing distributive property in mathematics.

Distributive property is :

a(b + c) = ab + ac

Option I is not an identity , therefore it is wrong.

Option II) y = x + 3 is just an algebraic expression.

Only Option III is an identity. This is because it follows the rule of

(a² - b²) = (a + b) (a - b)

We can prove and confirm this be solving the algebraic expression

(x + y) (x - y)

We expand the bracket

x² - xy +xy - y²

x² - y²

Therefore, option A is the correct option.

6 0
3 years ago
Read 2 more answers
In a poll of Mr. Briggs's math class, 67% of the students say that math is their favorite academic subject. The editor of the sc
levacccp [35]

Mathematics is the subject that is most popular in the class and is liked by the students.

<u>Explanation:</u>

Among all the subjects that are added in the curriculum of the students in the school, Mathematics is the subject that is mostly liked by the students in the class and in the school.

To find this that mathematics was the favorite subject of the students, a a survey was conducted by the school people in the class of a professor and through that survey it was shown that Mathematics was a subject that was mostly liked by all the students.

4 0
3 years ago
Solve the initial-value problem<br><br> y' = x^4 - \frac{1}{x}y, y(1) = 1.
natta225 [31]

The ODE is linear:

y'=x^4-\dfrac yx

y'+\dfrac yx=x^4

Multiplying both sides by x gives

xy'+y=x^5

Notice that the left side can be condensed as the derivative of a product:

(xy)'=x^5

Integrating both sides with respect to x yields

xy=\dfrac{x^6}6+C

\implies y(x)=\dfrac{x^5}6+\dfrac Cx

Since y(1)=1,

1=\dfrac16+C\implies C=\dfrac56

so that

\boxed{y(x)=\dfrac{x^5}6+\dfrac5{6x}}

4 0
3 years ago
2d+4=10+2.5d<br><br> Help Me
sergiy2304 [10]
Subtract 2d from both sides

simplify 10 + 2.5d - 2d to 10 + 0.5d

subtract 10 from both sides

simplify 4 - 10 to -6

divide both sides by 0.5

simplify 6/0.5 to 12

switch the sides

Answer: d = -12.
6 0
3 years ago
An exercise machine with an original price of $626 is on sale at 20% off
iren [92.7K]

Answer:

$125.2-discount

$500.8-sale price

Step-by-step explanation:

hope it helps

5 0
3 years ago
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