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2 years ago

HELP ME PLEASEEEEEEE

Mathematics

2 answers:

Mamont248 [21]2 years ago

8 0

Answer:

it's c

Step-by-step explanation:

divide it by 7 we get 3 /7

mylen [45]2 years ago

6 0

Answer:

Step-by-step explanation:

21/49

can both be divided by 7

21/7=3

49/7=7

answer= 21/49 (c)

Please give me brainliest ive never gotten it

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3. A circle is given by the equation x^2+y^2=100. Which of the following points are on the circle?

slava [35]

Answer:

Options A, B and E

Step-by-step explanation:

To the breakdown:

For a point to be on the circle it must satisfy the equation of a circle.

From the question we are given the equation of the circle as:

x^2 + y^2 = 100;

To determine the points that can be present in the circle we check each point against the equation and see if the Left hand (LHS)and Right hand (RHS)side of the equation are equal. So lets start:

a) (0,10) => x = 0, y = 10;

(0)^2 + (10)^2 = 100; so the LHS and RHS of the equation are the same.

b) (-8, 6) => x= -8, y = 6;

(-8)^2 + (6)^2 = 64 + 36 = 100; so the LHS and RHS are equal.

c) (-10, -10) => x=-10, y=-10;

(-10)^2 + (-10)^2 = 100+100= 200; the LHS is greater than the RHS.

d) (45, 55) => x=45, y=55;

(45)^2 + (55)^2 = 2025 + 3025 = 5050; the LHS is greater than the RHS.

e) (-10, 0) => x=-10, y= 0;

(-10)^2 + (0)^2 = 100; so the LHS and the RHS are equal.

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2 years ago

Find the equation in slope-intercept form that describes a line through (–1, 1) and (2, 3)

Butoxors [25]

Answer:

y = 2/3x + 5/3

Step-by-step explanation:

The slope of the line is ...

slope = (change in y)/(change in x) = (3-1)/(2-(-1)) = 2/3

Then the point-slope form of the desired line can be written ...

y = m(x -h) +k . . . . . slope m through point (h, k)

y = 2/3(x +1) +1 . . . . slope 2/3 through point (-1, 1)

y = 2/3x + 5/3 . . . . . . simplify to slope-intercept form

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2 years ago

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IgorC [24]

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2 years ago

Read 2 more answers

The solutions to a certain quadratic equation are x = -4 and x = 3. Write the equation in standard form below.

emmasim [6.3K]

Answer:

y = x² + x - 12

Step-by-step explanation:

Given the solutions are x = - 4 and x = 3, then the factors are

x(x - (- 4)) and (x - 3), that is (x + 4) and (x - 3)

The equation is then the product of the factors

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= x² - 3x + 4x - 12

= x² + x - 12 ← in standard form

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