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Anit [1.1K]
4 years ago
14

Write an equation that is perpendicular to y= 1/2x+5 and passes through (4,8)

Mathematics
1 answer:
goblinko [34]4 years ago
4 0

Answer:

y = -2x + 16.

Step-by-step explanation:

The slope of the perpendicular line = -1 / slope of the given line

= -1 / 1/2 = -2.

Using the point slope form of the equation of a straight line:

y - y1 = m (x - x1)

y - 8 = -2(x - 4)

y - 8 = -2x + 8

y = -2x + 16  is the required equation.

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If a seed is planted, it has a 75% chance of growing into a healthy plant.
Elan Coil [88]

Answer:

9.72405%

Step-by-step explanation:

Binomial Probability

(N choose k) p^k (1-p)^(n-k)

N=7  seeds planted

p= 100% - 70% = 30% = 0.3 <--- we are interested in the plant NOT growing

(1-p) = 70% = 0.7  <--- 70% chance the plant will survive and grow

k=4  <--- we want four of them to fail

The probability is:

 (7 choose 4) * (0.3)^4  (0.7)^3 =

 7!/(4!3!) (0.3)^4 (0.7)^3  =

 (7*6*5/3*2) (0.3)^4 (0.7)^3 =

 7*5 (0.3)^4 (0.7)^3 =

 35 * 0.0081 * 0.343 = 0.0972405 = 9.72405%

6 0
4 years ago
How do you write a rule for determining possible values of a variable in an inequality????
zubka84 [21]
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5 0
3 years ago
2) Divide (8.6 x 108) by (3.2 x 103). Express your answer in scientific notation. <br> A) .26875 x 106 <br> <br> B) 2.6875 x 105
Naddik [55]
The answers B <span>2.6875 x 105 i took the test</span>
7 0
4 years ago
Daniel saves 30% of every paycheck. his paycheck last week was 560.
Brut [27]

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Step-by-step explanation:

5 0
3 years ago
X and y-intercept of y=X-5
aksik [14]
The x-intercept is when y = 0
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Answer: x-intercept is (5, 0), y-intercept is (0, -5)
4 0
3 years ago
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