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Westkost [7]
3 years ago
8

4x2-36x+80=0 Soma e Produto

Mathematics
1 answer:
myrzilka [38]3 years ago
7 0
4x2-36x+80=0
Answer
X= 5
X=4
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shen has ridden 4 miles of a bike course. the course is 40 miles long. what percentage of the course has shen ridden so far?
s344n2d4d5 [400]

Answer:

10% out of 100%.

Or 4/40=1/10 which is 10%.

Shen has ridden her bike for 10% of the course

4 0
3 years ago
Let a represent a non zero rational number and let b represent an irrational number. Which expression could represent a rational
Marta_Voda [28]

The operation between a rational and a irrational number that results in a rational number is a multiplication, hence the expression ab could represent a rational number.

<h3>What are rational and irrational numbers?</h3>

If a number can be represented by a fraction, it is rational, otherwise, it is irrational.

The addition/subtraction of a rational and an irrational numbers is irrational, while the multiplication is rational, hence the expression ab could represent a rational number.

More can be learned about rational numbers at brainly.com/question/10814303

8 0
2 years ago
PLEASE HELP!!!!!!!!!!
agasfer [191]

Answer:

a = 30

b = 15

c = 3

d = 30

e = 10

f = 20

Step-by-step explanation:

60 deg and a + 30 are alt int <S and congruent

a + 30 = 60

a = 30

a + 30 and a + 2b are corresponding angles and congruent

a + 2b = a + 30

2b = 30

b = 15

a + 2b and 5b - 5c are vertical angles and congruent

5b - 5c = a + 2b

5(15) - 5c = 30 + 2(15)

75 - 5c = 30 + 30

75 - 5c = 60

-5c = -15

c = 3

a + 2b and 10c + d are corresponding angles and congruent

10c + d = a + 2b

10(3) + d = 30 + 2(15)

d + 30 = 60

d = 30

5b - 5c and 2d + 6e are supplementary and add to 180

5b - 5c + 2d + 6e = 180

5(15) - 5(3) + 2(30) + 6e = 180

75 - 15 + 60 + 6e = 180

6e + 120 = 180

6e = 60

e = 10

2d + 6e and 4f + 4e are alt int angles and congruent.

4f + 4e = 2d + 6e

4f + 4(10) + 2(30) + 6(10)

4f + 40 = 60 + 60

4f + 40 = 120

4f = 80

f = 20

3 0
3 years ago
The perimeter of triangle ABC is given by the expression 3x2 - 7x + 2.
VladimirAG [237]

Answer:

<em>Perimeter of ABC = AB + BC+AC. Replace letters with equations.</em>

<em>3x^2-7x+2</em><em> = </em><u><em>2x^2-10x+6 + x^2-x-4 + AC</em></u><em> = </em><em>3x^2-11x+2 + AC</em><em>.</em>

<em>AC = 4x;</em>

3 0
3 years ago
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What is the volume in cubic feet of a greenhouse that is 50 feet long, 25 feet wide, and 12 feet high?
Alexandra [31]
To find volume you just multiply the length, width, and height, so 15,000 cubic feet.
8 0
3 years ago
Read 2 more answers
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