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Andrej [43]
2 years ago
13

NEED TO PASS HELP WILL GIVE BRAINLY!!!

Mathematics
1 answer:
True [87]2 years ago
5 0

Answer:

\bigodot None of the other answers are correct.

Step-by-step explanation:

  • 2b^2-3b+85=-5 (Given)

  • \implies 2b^2-3b+85+5=0

  • \implies 2b^2-3b+90=0

  • Comparing it with the general form of quadratic equation ax^2+bx+c=0, we find:

  • a = 2, b = -3, c = 90

  • Next, we find the value of the discriminant b^2-4ac

  • b^2-4ac= (-3)^2-4(2)(90)=9-720=-711

  • \because b^2-4ac, which means the roots of the given quadratic equation are non-real or imaginary.

  • Thus, last option is the correct answer.
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The length of a rectangle is 99 centimeters. Find all possible values for the width of the rectangle if the perimeter is at leas
deff fn [24]

So the width should be 21 cm, to have a length of 99 cm and a perimeter of 240 cm in linear equations.

What are instances of linear equations?

  • Ax+By=C is the usual form for two-variable linear equations. A standard form linear equation is, for instance, 2x+3y=5. When an equation is given in this format, finding both intercepts is rather simple (x and y).
  • Because (0,y) is the location where the line crosses the y-axis, the value of y when x is 0 is referred to as the y-intercept.
  • The point-slope form, standard form, and slope-intercept form are the three main types of linear equations.

240 = 2(99) + 2x

240 = 198 + 2x

42 = 2x

21 = x

Learn more about linear equations

brainly.com/question/11897796

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3 0
1 year ago
What's one minus three eighths?
Wewaii [24]
Five eighths l, think about it as 8 eights minus 3 8ths. Keep the bottom subtract the top
8 0
3 years ago
Read 2 more answers
Simplify the expression. <br> 1/2r – 2r + 6 – 3
Hoochie [10]

Answer:

-3(r-2)/2

Step-by-step explanation:

r/ 2 − 2 r + 6 − 3

r /2 − 2 r⋅ 2/ 2+ 6 − 3

r/ 2 + − 2r ⋅ 2/ 2 + 6 − 3

r − 2 r ⋅ 2 /2 + 6 ⋅ 2/ 2 + − 3 ⋅ 2/ 2

r − 2 r ⋅2 + 6⋅ 2 − 3 ⋅ 2 /2

r − 4 r + 12 − 6 /2

−3 ( r − 2 ) /2

Hope that helps! Plz, mark brainiest! :D

Have a great day!

7 0
3 years ago
What is the answer to 3/8-2/8
Gala2k [10]

Answer:

1/8

Step-by-step explanation:

3/2 - 2/8

3-2 = 1/8

hope it helps u ;)

5 0
3 years ago
Sixty-three is 70% of what number?
kap26 [50]
I hope this helps you



?=63.70/100


?=441/10


?=44,1
6 0
4 years ago
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