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Darya [45]
3 years ago
5

Please help 100 points. Picture in the desc

Mathematics
2 answers:
zvonat [6]3 years ago
8 0
Given: (x1 , y1)= (2,2) and (X2,y2)= (-1,-2)

then using slope formula:
∆y/∆x= (y2-y1 / x2-x1)= (-2-2 / -1-2)= (-4/-3)= (4/3)

hence 4/3 is the slope of the line
DENIUS [597]3 years ago
4 0

rise over run

(-1,2) (2,2)

2-2/2-(-1)

2-2/2+1 equals 0/3

or alternatively

2-2/-1 - 2 which would be -0/3.

Whichever point is the first helps determine this alot

rise/run=rise over run= y2 - y1/ x2 - x1

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Janet can do a job in three hours while Gary can do the same job in two hours. If Janet works for an hour before Gary be in help
yKpoI14uk [10]

Janet = 1/3

Gary = 1/2

(1/3) + (1/2) = 5/6

Let x = time they both can do the job together

(1/2) + (5/6)x = 1

Solve for x to find your answer.

6 0
3 years ago
Read 2 more answers
A small radio transmitter broadcasts in a 69 mile radius. If you drive along a straight line from a city 93 miles north of the t
larisa86 [58]

Answer:

See Explanation

Step-by-step explanation:

According to the Question,

  • We have A small radio transmitter that broadcasts in a 69-mile radius. If you drive along a straight line from a city 93 miles north of the transmitter to a second city 78 miles east of the transmitter.

Thus,

The distance that you get reception is the length of the chord created by the intersection of the circle defining the edge of transmission and the line defining the car trip.

  •  x2 + y2 = 69²               this is the circle

And,

The Transmitter at the origin

City to the north at (0,93)  & City to the east at (78,0)  

the Slope is M=(-93/78)

Intercept is B= y - mx ⇒  93 - (-93/78)(0) = 93

The equation of the line between the cities is y = (-93/78)x + 93

  • y = -93x/78 + 93           this is the line

Now, Solve the above two Equations

The intersection is gotten from the picture or solving:

x^2 + [(-93/78)*x + 93]^2 = 69^2

  • on solving we get, the points approximately are: (67.952,11.98 ) and (23.6277, 64.82)

Now,

From the Pythagorean theorem the total distance of the trip is:  

d1 = √(93^2 + 78^2) ≈ 121.37miles  

And the distance when the signal is picked up is:

d2 =√ [(67.952-23.627)^2 + (64.82 - 11.98)^2] ≈ 68.96 miles

You will pick up a signal from the transmitter in (d2/d1)*100 = 56% of the drive.

3 0
3 years ago
Please ASAP.<br> Find the value of u.
shusha [124]

Answer:

The answer is B 62

Step-by-step explanation:

I just divid 124 by 2

5 0
3 years ago
HELP PLEASEE no links hellpp
bezimeni [28]

Answer:

B and E

Step-by-step explanation:

perpendicular sides mean they will equal 90 degrees... so all rectangles and squares are perpendicular- a 90 degree triangle also is perpendicular. The Equatorial and the Acute triangle do not have 90 degree angles

4 0
3 years ago
X-1/2*1/8=1/8 Find the value of x.
MA_775_DIABLO [31]

Answer:

x = 3 / 16

Step-by-step explanation:

Simplify first:

x - 1 / 16 = 1 / 8

x = 3 / 16

7 0
3 years ago
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