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konstantin123 [22]
3 years ago
8

Use the discriminant to describe the roots of each equation. Then select the best description. 3x2 - 2 + 7x = 0

Mathematics
1 answer:
forsale [732]3 years ago
3 0
Hello :
the the discriminant : 3x² + 7x - 2 = 0 is : (7)²-4(3)(-2) =49+24=73
two real roots
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the perimeter of a triangle is 34 units. its width is 6.5 units. write an equation to determine the length (l) of the rectangle
borishaifa [10]
Perimeter = length of the 3 sides of the triangle ie 34units

Since width we are given 6.5 units

We have to find the remaining 2 sides:

Formula of Triangle for Perimeter

P = a + b + c (sum of sides)

simplify: P= a + 2b (its an isosceles)

34 = 6.5 + 2b

34 - 6.5 = 2b

27.5 = 2b

Só b = 13.75 units each length of triangle

Relationship between triangle and rectangle

= rectangle has four right angles, so a triangle has an angle of half since it bisects the edges (ie 45*)

Use Trig Ratios to find L

SOHCAHTOA

we want adjacent ( L)

13.75 sin 45

L = 9.72

Thus your equation is

Equation used to find Triangle × Trig ratios

P = a + 2b
sin 45

Where L is length of rectangle
a is width of triangle

L =(P - a +2b)× sin 45

3 0
3 years ago
Four trees lived in a row in Happy Forest. They were red, green, yellow, and blue. The red tree was not next to the green tree.
REY [17]
Yellow - Red - Blue - Green

If Yellow was First and Red was not next to the green tree, but blue was to the right of the green it would be like this - 

Yellow (First) Red, not next to green, blue next to green, green next to blue.

6 0
3 years ago
4. Gabby ate 25 % of a whole pepperoni pizza.
mart [117]

Answer:

There is 5/8 left for Mohamed to eat.

Step-by-step explanation:

Let's put everything into fractions of 1/8. knowing that 25% is 1/4 or 2/8, 1/8 + 2/8= 3/8. and to find the answer, you need to subtract 3/8 from 8/8 or 1.

As a result, 5/8.

3 0
3 years ago
Read 2 more answers
I need a help please
Lostsunrise [7]

Answer:

1)12    2)a_{n}= a_{n+6}

Step-by-step explanation:

Problem 1:

a(5)=25    a(3)=13

a(5)-a(3)=25-13=12

mark brainliest

5 0
2 years ago
What is z 15 = -45+ z
damaskus [11]

Answer:

60 = z

Step-by-step explanation:

15 = - 45 + z

15 + 45 = z

60 = z

8 0
3 years ago
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