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andreyandreev [35.5K]
2 years ago
5

20 POINTS HELP ME PLEASE How many solutions does the system have

Mathematics
1 answer:
finlep [7]2 years ago
3 0

Answer:

Two

Step-by-step explanation:

x² + 4 = 4x + 1

x² - 4x + 3 = 0

x² - 3x - x + 3 = 0

x(x - 3) - (x - 3) = 0

(x - 3)(x - 1) = 0

x = 1, 3

y = 4(1) + 1 = 5

y = 4(3) + 1 = 13

Two solutions: (1,5) (3,13)

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nadezda [96]

Answer:

(12.2,-6.4)

Step-by-step explanation:

The results from Desmos are as shown.

The displayed values are (12.294, -6.353)

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3 years ago
2/3 x 4/7 write the answer in the simplest form
trapecia [35]

Answer:

8/21

I don't think that it can be simplified further....

6 0
2 years ago
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On March 24, 1989, the Exxon Valdez oil tanker ran aground and leaked millions of gallons of oil into Prince William Sound. The
Maslowich

Answer:

Given the value of pi (π) = 3.14

Given the speed of Radius = 0.10 mph

Given the total area = 11000 square miles.

To find = the time.

Step-by-step explanation:

Since the oil spill in the ocean and spread in a circular pattern. So the total the spilled area = 11000 square miles.

The speed of the radius at which is increase = 0.10 mph

Given the value of pi (π)  = 3.14

Now we have to find the total hours consumed to cover the area or the spilled over the area.

First, find the radius and this radius will be the distance. Then divide the distance with speed to find the time taken.

Area  = 2 π r^2

11000 = 2 ×3.14 × r^2

r = 41.85 m

Now find the time.

Time taken to spill the oil =  41.85 / 0.10 = 418.52 hours

8 0
3 years ago
Read 2 more answers
Circle D circumscribes ABC and ABE. Which statements about the triangles are true? Statement I: The perpendicular bisectors of A
mestny [16]

Answer:

The correct option is;

B. I and II

Step-by-step explanation:

Statement I: The perpendicular bisectors of ABC intersect at the same point as those of ABE

The above statement is correct because given that ΔABC and ΔABE are inscribed in the circle with center D, their sides are equivalent or similar to tangent lines shifted closer to the circle center such that the perpendicular bisectors of the sides of ΔABC and ΔABE are on the same path as a line joining tangents to the center pf the circle

Which the indicates that the perpendicular the bisectors of the sides of ΔABC and ΔABE will pass through the same point which is the circle center D

Statement II: The distance from C to D is the same as the distance from D to E

The above statement is correct because, D is the center of the circumscribing circle and D and E are points on the circumference such that distance C to D and D to E are both equal to the radial length

Therefore;

The distance from C to D = The distance from D to E = The length of the radius of the circle with center D

Statement III: Bisects CDE

The above statement may be requiring more information

Statement IV The angle bisectors of ABC intersect at the same point as those of ABE

The above statement is incorrect because, the point of intersection of the angle bisectors of ΔABC and ΔABE are the respective in-centers found within the perimeter of ΔABC and ΔABE respectively and are therefore different points.

6 0
2 years ago
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the perimeter of a triangular plot of land is 2400 ft. the longest feet is 200 ft less than twice the shortest. the middle side
noname [10]
P = a + b + c
p = 2400
a = longest = 2c - 200
b = middle = a - 200 = 2c - 200 - 200 = 2c - 400

2400 = (2c - 200) + (2c - 400) + c
2400 = 5c - 600
2400 + 600 = 5c
3000 = 5c
3000/5 = c
600 = c <== shortest side

a = 2c - 200.....= 2(600) - 200 = 1200 - 200 = 1000<== longest side
b = 2c - 400...= 2(600) - 400 = 1200 - 400 = 800 <== middle side
3 0
2 years ago
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