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3 years ago

Find equation of a line through (1,4) and (1,6)

Mathematics

1 answer:

Elena L [17]3 years ago

4 0

Notice the picture below

no matter what value "y" may have, "x" will always be 1

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Es Double a number is equal to the number decreased by five. Find the number. 10 Submit

ivanzaharov [21]

Answer:

I think the answer is 7.5, because of this equation: 2x-5=10

7 0

3 years ago

The half-life of radioactive cobalt is 5.27 years. Suppose that a nuclear accident has left the level of cobalt radiation in a c

sweet [91]

Answer:

35 years

Step-by-step explanation:

The proportion p that remains after y years is ...

p = (1/2)^(y/5.27)

In order for 1/100 to remain (the level decays from 100 times to 1 times), we have ...

.01 = .5^(y/5.27)

log(0.01) = y/5.27·log(0.5) . . . take logs

y = 5.27·log(0.01)/log(0.5) ≈ 35.01 ≈ 35 . . . . years

5 0

3 years ago

...............................This:

pychu [463]

Y=1/2x+2 because 1/2 is the slope and 2 is the y-intercept

7 0

3 years ago

Read 2 more answers

Given m||n, find the value of x. (9x-5)(6x+20)

xxTIMURxx [149]

Answer:

5/9 & -10/3

Step-by-step explanation:

Set each to 0 and solve:

9x-5 = 0

9x=5

x=5/9

6x+20=0

6x=-20

x=-20/6

x= -10/3 or -3 1/3

7 0

3 years ago

Which is the vertex of x2 + 10x = -17 (-5,-8) (5,8) (-5,8) (5,-8)

ad-work [718]

Answer:

vertex = (- 5, - 8)

Step-by-step explanation:

Given a quadratic in standard form : ax² + bx + c = 0 : a ≠ 0

Then the x- coordinate of the vertex is

$x_{vertex}$ = - $\frac{b}{2a}$

Given x² + 10x = - 17 ( add 17 to both sides )

x² + 10x + 17 = 0 ← in standard form

with a = 1, b = 10, c = 17, then

$x_{vertex}$ = - $\frac{10}{2}$ = - 5

Substitute x = - 5 into the quadratic for the corresponding value of y

y = (- 5)² + 10(- 5) + 17 = 25 - 50 + 17 = - 8

Hence vertex = (- 5, - 8)

4 0

3 years ago