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4 years ago

NEED HELP ASAP PLEASE

Mathematics

1 answer:

Nata [24]4 years ago

3 0

Answer:

3x-5y = 26

Step-by-step explanation:

We have a point and a slope

Point slope form a line is given by

y-y1 = m(x-x1)

y--4 = 3/5 (x-2)

y+4 = 3/5( x-2)

We want it in slope intercept form (y=mx+b)

Distribute the 3/5

y+4 = 3/5 x-6/5

Subtract 4 from each side

y+4-4 = 3/5x -6/5 -4

Get a common denominator for the constant terms

y = 3/5x -6/5 -20/5

y = 3/5x -26/5

Multiply each side by 5

5y = 3/5x *5 -26/5 *5

5y = 3x-26

Subtract 3x from each side

-3x+5y = -26

We usually want the x term to be positive

Multiply by -1

3x-5y = 26

This is standard form for a line

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A sample of 100 wood and 100 graphite tennis rackets are taken from the warehouse. if 13 wood and 10 graphite are defective and

Nimfa-mama [501]

Let's split the problem in non-intersecting subsets: we have $87$ good wood racquets, $13$ defective wood rackets, $90$ good graphite racquets, $10$ defective graphite rackets.

The probability that the racket is wood or defective covers the following subsets: good wood, defective wood and defective graphite, which have, respectively, $87$ , $13$ and $10$ elements.

Since the total is $200$ elements, the probability is

$\frac{87+13+10}{200} = \frac{110}{200} = 0.55$

8 0

3 years ago

Will give brainliest and 5 stars

BaLLatris [955]

First, find what percentage of students had 3 or more by adding up your known percents:

45% + 23 % + 21% + x% = 100%
x = 11%

Since you're given that 96 students had 2 or more, you add up the percentages of 2 and 3 or more:

11 + 21 = 32%

Now set up a proportion that relates it to the whole:

$\frac{96 students}{32 percent} = \frac{x students}{100 percent}$

This will allow you to find the total number of students at the school.

Cross multiplying and solving for x results in 300 total students.

Question 1:
45% had one or more absences. 45% of 300 students is 135 students.

Question 2:
As we found before, 11% of students had three or more. 11% of 300 is 33 students.

5 0

4 years ago

Plz help I’m stuck and I can’t answer

Margaret [11]

Answer: the first one is 14 and the second one is 5

Step-by-step explanation:

7 0

3 years ago

X/5+7= -3<br> Please helppppp meeeee I neeeddd heeeelppp quickly

anastassius [24]

Answer:

x=−50

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Solve for C.<br> 5/4= -4c + 1/4

dybincka [34]

5/4= -4c + 1/4

Inverse operation

$\frac{5}{4} = -4c + \frac{1}{4}$

- 1/4 -1/4

5/4 - 1/4 = 4/4

$\frac{4}{4} = -4c$
-4c/-4 = 4/4 ÷ -4/1

4/4 *- 1/4 = c
-4/8 = c
c = -1/2

Answer: $c = - \frac{1}{2}$

6 0

3 years ago