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Ivanshal [37]
4 years ago
7

A line has this equation: -x + 7y = 49 write an equation for the perpendicular line that goes through (5, 3)

Mathematics
1 answer:
Dima020 [189]4 years ago
6 0

Step-by-step explanation:

-x + 7y = 49

convert to slope-intercept form

7y = x + 49

y = x/7 +49/7

y = x/7 + 7

m = x/7

Perpendicular lines have opposite-reciprocal slopes

y = -7/x + b

sub (5,3)

3 = -7/(5) + b

b= 3 + (7/5)

b = 22/5

final answer: y = -7/x + 22/5

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LekaFEV [45]

Answer:

R / 5 = -9

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4 0
4 years ago
Evaluate each expression for w=5, x=3, y=4 and z=8.<br> 3y+6/2x
Aliun [14]
Plug in your numbers so the equation will turn out to be 3(4)+6/2(3) , you need to simplify 6/2 which will be 3 and 3 times 3 = 9 so the equation will be 3(4)+9 and 3 times 4 = 12 so the equation will now be 12+9 = 21
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4 0
4 years ago
Hello Good morning/evening/afternoon !<br> Pls Help ?!
s344n2d4d5 [400]

Answer: y = 3/5x + 6

Step-by-step explanation: Slope intercept form is y = mx + b

We must convert your problem into this.

3x - 5y = -30

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-5y = -3x - 30

y = (-3x - 30)/-5

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3 0
3 years ago
A box contains four 40-W bulbs, five 60-W bulbs and six 75-W bulbs. If bulbs are selected one by one in random order without rep
mestny [16]

Answer:

60%

Step-by-step explanation:

We have that there are 6 75-W bulbs, that is to say these are the favorable cases. The total cases would be the sum of all the bulbs that would be:

4 + 5 + 6 = 15

Therefore the probability of at least 1 75-W bulbs is:

6/15 = 0.4

Now we must find the probability of at least 2 75-W bulbs, which is like this:

P (examine at least two 75-W bulbs) = 1 - P (examine at most one 75-W bulbs)

Replacing:

P (examine at least two 75-W bulbs) = 1 - 0.4 = 0.6

It means that the probability of least two 75-W bulbs is 60%

4 0
3 years ago
What is the value of 3.5(3x+4) when x=7? (Show work plz) Uwu
inna [77]

Answer:

Step-by-step explanation:

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7 0
3 years ago
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