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Eva8 [605]
3 years ago
6

Four times a number is 40. the sum of n and 4 is 20. half of a number is 10.

Mathematics
1 answer:
Katen [24]3 years ago
6 0

Answer:

Step-by-step explanation:

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How many intersections are there of the graphs of the equations below?
kipiarov [429]

Answer:

<u>The number of intersections = ∞</u>

Step-by-step explanation:

Given the system of equations:

0.5 x + 5y = 6

3x + 30y = 36

By multiplying the first equation by 6

∴ 6 (0.5 x + 5y) = 6 * 6

∴ 3x + 30y = 36

So, Those equations are "Dependent", because they are really the same equation, just multiplied the first equation by 6.

So, the two equations are identical

Therefore: <u>They have infinity number of solutions.</u>

<u>See the attached figure.</u>

0.5 x + 5y = 6 ⇒ in black color

3x + 30y = 36 ⇒ in red color

6 0
3 years ago
In QRS, mQ= 8x-17,mR=19x+4,and mS=5x+1. Classify QRS by its angles and sides
katen-ka-za [31]

Answer:

Option (3) and Option (5)

Step-by-step explanation:

By the property of a triangle,

Sum of interior angles of a triangle is 180°.

m∠Q + m∠R + m∠S = 180°

By substituting the measures of angles in the equation,

(8x - 17)° + (19x + 4)° + (5x + 1)° = 180°

32x - 12 = 180

32x = 192

x = 6

m∠Q = (8x - 17)° = 48 - 17

                          = 31°

m∠R = (19x + 4)° = 114 + 4

                           = 118°

m∠S = (5x + 1) = 30 + 1

                       = 31°

Since, one interior angle measures 118° which is grater than 90°.

Therefore, triangle QRS is an obtuse triangle.

Since, m∠Q = m∠R = 31°

It's an isosceles triangle.

Option (3) and Option (5) are the correct options.

4 0
3 years ago
Given the angle shown below, what is the location of the reflected angle's vertex after a reflection over the line has occurred?
harina [27]

Answer:

(-2,-2)

Step-by-step explanation:

8 0
3 years ago
Estimate 0.028634791 to the nearest hundredth
Zanzabum

Answer:

.03

Step-by-step explanation:

the two is in the hundredth place

look next door 5 or more round next door 4 or less let is rest

8 bigger than 5 so 2 goes to 3

3 0
4 years ago
Read 2 more answers
X - y = 6<br><br>x = y + 2<br><br>Solve the system of equations by substitution.
worty [1.4K]

Answer:

No Solution.

Step-by-step explanation:

x-y=6

x=y+2

y+2-y=6

2=6

no solution

6 0
4 years ago
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