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4 years ago

12

Which apply ??????????

1 answer:

pentagon [3]4 years ago

4 0

A,B,D i think so sorry if its wrong

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Karson drove from his house to work at an average speed of 35 miles per hour. The drive took him 20 minutes. If the drive took

Nastasia [14]

Answer:

Karson's average speed on his way home was 28 miles per hour.

Step-by-step explanation:

Since Karson drove from his house to work at an average speed of 35 miles per hour, and the drive took him 20 minutes, if the drive took him 25 minutes and he used the same route in reverse, to determine what was his average speed going home, the following calculation must be performed:

60 = 35

20 = X

20 x 35/60 = X

700/60 = X

11.666 = X

25 = 11,666

60 = X

60 x 11.666 / 25 = X

27.99 = X

Therefore, Karson's average speed on his way home was 28 miles per hour.

3 0

3 years ago

Graph this equation of a circle?<br>I'm stuck and I don't know how to approach this math problem.

Soloha48 [4]

First use the distance formula to find the radius of the circle:
d= $\sqrt{ ( x_{2}- x_{1}) ^{2}+ ( y_{2}- y_{1}) ^{2} }$

d= $\sqrt{ (-1-23)^{2}+ (5--2)^{2} }$

d= $\sqrt{ (-24)^{2}+ (7)^{2} }$

d= $\sqrt{ (-24+7)^{2} }$

d= $\sqrt{ (-17)^{2} }$

d=|17|
d=17

Next, find the equation of the circle (use the first picture):
(x+1)^2+(y-5)^2=17^2

Finally, input the equation into a graphing calculator:
(2nd picture)

5 0

3 years ago

⦁ Scott works as a delivery person for a shipping company. The graph shows a linear model for his delivery times on different da

BARSIC [14]

Answer:

(3, 21), (6, 12)
-3
y -21 = -3(x -3) ⇒ y = -3x +30
30 minutes; 3 minutes

Step-by-step explanation:

a) The two marked points have coordinates (days, minutes) = (3, 21) and (6, 12).

__

b) The slope is the vertical change (rise) divided by the horizontal change (run). For these two points, that is ...

rise/run = (12-21)/(6-3) = -9/3 = -3 = slope

__

c) The point-slope form of the equation for a line is ...

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

Using the first point and the slope we found, this is ...

y -21 = -3(x -3) . . . . . point-slope form

Add 21 and eliminate parentheses:

y = -3x +9 +21

y = -3x +30 . . . . . . . . collect terms; slope-intercept form

__

d) The initial time is the time corresponding to day 0, the value of y when x=0. It is 30 minutes.

The slope in part (b) tells us the time decreases by 3 minutes per day.

6 0

3 years ago

Solve the equation for y. Then find the value of y for each value of x.<br><br>3x-7y=13;x= -3, 0, 3

Sidana [21]

When x is -3

$3\left(-3\right)-7y=13\quad :\quad y=-\frac{22}{7}\quad \left(\mathrm{Decimal}:\quad y=-3.14285\dots \right)$

When x is 0

$3\cdot \:0-7y=13\quad :\quad y=-\frac{13}{7}\quad \left(\mathrm{Decimal}:\quad y=-1.85714\dots \right)$

When x is 3

$3\cdot \:3-7y=13\quad :\quad y=-\frac{4}{7}\quad \left(\mathrm{Decimal}:\quad y=-0.57142\dots \right)$

7 0

3 years ago

Select all the points that are on the graph of the equation 4y-6x=12 a (-4, -3) b (3, -4) c (0, -2) d (0, 3) e (6, 4) f (-1, 1.5

Virty [35]

Answer:

a,b,d,f

Step-by-step explanation:

If you have any questions about the way I solved it, don't hesitate to ask :)

5 0

3 years ago