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3 years ago

Find the equation of the line. Use exact numbers.

Mathematics

2 answers:

trasher [3.6K]3 years ago

8 0

Y=2/3x+4

Answer ^^^

Hope this helps

nikitadnepr [17]3 years ago

5 0

The equation of y is y = a*x + b
So we must find a and b:
b is the intersectionwith the y-axis:
4 --> y=a*x + 4
a is the rise:
The line rises 3 to the right and 2 up --> 2/3 = a

y = 2/3 * x + 4

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What is the value of x in this proportion?

schepotkina [342]

Answer:

(a) -20 1/2

Step-by-step explanation:

The proportion can be solved using "cross multiply" as the first step. This eliminates the fractions and turns it into a linear equation.

2/7 = -5/(x +3) . . . . . given

2(x +3) = -35 . . . . . . multiply by 7(x +3)

2x = -41 . . . . . . . . . simplify, subtract 6

x = -20 1/2 . . . . . . divide by 2

7 0

3 years ago

Solve the quadratic equation by using a graphic approach. Round your answer to the hundredths place,

NeX [460]

Answer:

Step-by-step explanation:

Well, I really don’t like graphic approaches in math, so hear ya go a formula:

Although there are easier ways that work for some quadratics, but this formula works for them all. (It is atached, have a look)

So,

( -(-2)+- square root of ((-2)^2-4(1)(-40)) ) / 2(1)

Note that for a hear I use one, since there is nothing in front of x.

( 2 + (12.8) ) / 2 < with plus

( 2 -(12.8) ) / 2 < with minus

X = 7.4

X = -5.4

(Quad equations have 2 answers)

7 0

3 years ago

Aditya deposits $500 in a savings account over the course of a year. He deposits money into the account throughout the next year

belka [17]

C) 500*4=N
is the answer to this.

3 0

3 years ago

Please answer this question ASAP

OverLord2011 [107]

Answer:

im pretty sure

Step-by-step explanation:

8 0

3 years ago

Work out the area of this semicircle.Take pie to be 3.142 and give your answer to 2 decimal places 10cm

rosijanka [135]

Answer:

The area of the semi circle $A = 157.1 cm^2$

Step-by-step explanation:

Explanation:-

Given radius of circle 'r' = 10 cm

The area of the circle formula

$A = \pi (r)^{2}$

The area of the semi circle formula

$A = \frac{\pi (r)^{2} }{2}$

taking π =3.142

$A = 3.142 X \frac{(10)^2}{2}$

On calculation , we get

$A = 157.1 cm^2$

Final answer:-

The area of the semi circle $A = 157.1 cm^2$

7 0

3 years ago