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Greeley [361]
3 years ago
13

Please help me on this problem I don't know how to do it.

Mathematics
1 answer:
quester [9]3 years ago
7 0
1: establish the angles, basically label one x (the small one) and the other y (the bigger one)

2. supplementary angles add up to 180, so therefore you have the equation x + y = 180.

3. so y (the bigger one) is 8 less than 3 times the smaller one (x) therefore you come up with the equation y = 3x - 8

4. plug in the equation of the bigger one into the other equation

x + 3x - 8 = 180
(combine like terms)
4x - 8 = 180

5. solve the equation by adding 8 to 180, then by dividing by 4.
x should equal 47

6. plug in 47 into the x + y = 180 equation, subtract 47 from 180 and you end up with 133

i hope i explained it alright
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Evgesh-ka [11]
7% of 350 is 24.5. So the answer is $374.5
4 0
3 years ago
One root of f(x)=x^3-4x^2-20x+48 is x = 6. What are all the factors of the function? Use the Remainder Theorem.
luda_lava [24]

Answer:

(x - 6)(x + 4)(x - 2)

Step-by-step explanation:

since x = 6 is a root then (x - 6) is a factor

x³ - 4x² - 20x + 48 ÷ (x - 6)

= (x - 6)(x² + 2x - 8)

= (x - 6)(x + 4)(x - 2) ← factors of f(x)

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3 years ago
Please I need help in this...it's for maths please​
dangina [55]

Answer:

  1. 1.6962 to 2.d.p = 1.70
  2. 0.007395 = 0.007 to 3d.p
  3. 0.4247 = 0.425 to 3.d.p
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                <u>Significant Figures</u>

  1. 32549 =  32500  to 3.s.f
  2. 909520 = 910000  to 3.s.f
  3. 32549 = 32550 to 4.s.f
  4. 909520 = 909500 to 4.s.f

Step-by-step explanation:

8 0
3 years ago
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A triangle has a perimeter of 165 cm. The first side is 65 cm less than twice the second side. The third side is 10 cm less than
Dima020 [189]

Answer:

  • first side: 55 cm
  • second side: 60 cm
  • third side: 50 cm

Step-by-step explanation:

The problem statement gives all the side lengths in terms of that of the second side. Let s represent the length of the second side in cm. Then the length of the first side is (2s-65), and the length of the third side is (s-10). The perimeter is the sum of all the side lengths:

  165 = (2s -65) +s +(s-10)

  165 = 4s-75

  240 = 4s

  60 = s . . . . . . . . second side

  2s-65 = 55 . . . . first side

  s-10 = 50 . . . . . . third side

In order, the side lengths are 55 cm, 60 cm, 50 cm.

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A soccer coach who has 15 children on her team will be playing 7 children at a time, each at a distinct position. which number i
Phantasy [73]
Well 7 goes into 15 7 times and theres one left over so there would be one left out 
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