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kiruha [24]
3 years ago
5

????????????????????

Mathematics
2 answers:
Effectus [21]3 years ago
5 0
For a line to be parallel to another line, the slope must be the same.
The line given is y = 3x - 5 , so the other line's slope has to be 3.

so your answer would be A. y = 3x + 5.
lora16 [44]3 years ago
5 0
y=mx+b

The equation that we are going to solve for is going to take this form. The original line also takes this form.
This is the slope-intercept form of a line, where m is the slope and b is the y-intercept.
Since both of the lines are parallel, they must have the same slope. Thus, the value of m is 3 for the new line.

y=3x+b

The line must also pass through the point (-1, 2). Plug in the values of x and y to solve for b.

2=3(-1)+b
2=-3+b

Add both sides by 3

b=5

Now, we have the value for b.
The equation for the parallel line must be the following:

y=3x+5

The first choice is your answer. Hope this helps! :)
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Can you help me pls can you help me
spayn [35]

Answer:

B

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
I don’t understand need help
RideAnS [48]

Answer: Choice D

(a-e)/f

=======================================

Explanation:

Points D and B are at locations (e,f) and (a,0) respectively.

Find the slope of line DB to get

m = (y2-y1)/(x2-x1)

m = (0-f)/(a-e)

m = -f/(a-e)

This is the slope of line DB. We want the perpendicular slope to this line. So we'll flip the fraction to get -(a-e)/f and then flip the sign from negative to positive. That leads to the final answer (a-e)/f.

Another example would be an original slope of -2/5 has a perpendicular slope of 5/2. Notice how the two slopes -2/5 and 5/2 multiply to -1. This is true of any pair of perpendicular lines where neither line is vertical.

8 0
3 years ago
Compare and contrast expanding and simplifying algebraic expressions with simplifying numeric expressions. For example, compare
larisa [96]
<span>With algebraic expressions, you can’t add and subtract any terms like you can add and subtract numbers. Terms must be like terms in order to combine them. So, you can’t always simplify an algebraic expression by following the order of operations. You have to use the distributive property to rewrite the expression and then combine like terms to simplify. With numeric expressions, you can either simplify inside the parentheses first or use the distributive property first.</span>
4 0
3 years ago
Read 2 more answers
Three numbers have a mean of 64. When a fourth number is included the mean is doubled. What is the fourth number?
astra-53 [7]
The mean is calculated by adding up all of the given numbers and dividing by the number of numbers.

Lets, for ease of understanding, say that the first three number were 64...

Mean=(64+64+64)/3=192/3=64

Now, lets solve for the mean where 'x' is the unknown fourth number and 128 is the mean. (since, the answer said that when the fourth number was added the mean, 64, was doubled '64*2=128')

128=(64+64+64+x)/4
128=(192+x)/4
Multiply both sides by 4
512=192+x
subtract 192 from both sides
320=x

The missing number is 320..


Now lets double check our work.

Mean=(64+64+64+320)/4=512/4=128

Answer=320
8 0
3 years ago
Read 2 more answers
Suppose that 70% of all Americans agree that a candidate is not trustworthy. A survey finds the 116 out of 200 agree that a cand
MArishka [77]

Answer:

Prob = 0.00009 = 0.009%  , Less Likely

Step-by-step explanation:

Using Binomial Distribution, Prob = N c r . ( P )^ r . ( Q ) ^ (n -r)   .

,P = success probability, ie candidate considered be trustworthy = 70% = 0.7; N = trials = 200 ; Q = failure probability, ie non trustworthy = 1 - 0.7 = 0.3  r = no. of success = 116

Pr = 200c116 . (0.7)^116 . (0.3)^(200 - 116) = 200c116 (0.7)^116 (0.3)^84 = 0.00009 = 0.009%

Less probability means Less Likely

5 0
2 years ago
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