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4 years ago

Choose the equation that represents the line passing through the point (2, -5) with a slope of -3.

Mathematics

2 answers:

chubhunter [2.5K]4 years ago

7 0

Your answer is D.) y = -3x + 1

Troyanec [42]4 years ago

7 0

Answer: D. y=-3x+1

Step-by-step explanation:

y=mx+b

-5=-3(2)+b

-5=-6+b

Add the 6 to -5 making it

1=b

the answer will be y=-3x+1

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The weights of steers in a herd are distributed normally. The standard deviation is 300lbs and the mean steer weight is 1100lbs.

gizmo_the_mogwai [7]

Answer:

The probability that the weight of a randomly selected steer is between 920 and 1730 lbs

P(920≤ x≤1730) = 0.7078

Step-by-step explanation:

Step(i):-

Given mean of the Population = 1100 lbs

Standard deviation of the Population = 300 lbs

Let 'X' be the random variable in Normal distribution

Let x₁ = 920

$Z = \frac{x-mean}{S.D} = \frac{920-1100}{300} = - 0.6$

Let x₂ = 1730

$Z = \frac{x-mean}{S.D} = \frac{1730-1100}{300} = 2.1$

Step(ii)

The probability that the weight of a randomly selected steer is between 920 and 1730 lbs

P(x₁≤ x≤x₂) = P(Z₁≤ Z≤ Z₂)

= P(-0.6 ≤Z≤2.1)

= P(Z≤2.1) - P(Z≤-0.6)

= 0.5 + A(2.1) - (0.5 - A(-0.6)

= A(2.1) +A(0.6) (∵A(-0.6) = A(0.6)

= 0.4821 + 0.2257

= 0.7078

Conclusion:-

The probability that the weight of a randomly selected steer is between 920 and 1730 lbs

P(920≤ x≤1730) = 0.7078

5 0

3 years ago

Sixty photos taken at a photo shoot are in black and white. If this represents 15 percent of the total number of photos taken, w

Art [367]

Answer:

D. 15×4/100×4 = 60/400

Step-by-step explanation:

First I figured out how many photos there are in total, which was by doing 60/.15, since only 15% of the total photos are in black and white. We can already cross out all possibilities that don't have the denominator 400, but we can go a step further by seeing which one is 60/400, or equal to 60/400, which is D. 15×4/100×4 = 60/400.

7 0

3 years ago

What is a 25% markup on $27.00?

kipiarov [429]

the value of 25% marked up on $6.75

8 0

3 years ago

I need help with this one some one help pls

Sindrei [870]

HI, please send the results from part C….. We can’t answer without knowing the results unless someone already did this question and know the answer..

7 0

3 years ago