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FinnZ [79.3K]
3 years ago
9

The value of y varies directly with x, and y = 48 when x = 16. Find y when x = 176.

Mathematics
2 answers:
viktelen [127]3 years ago
7 0
I do these a little different then most......if it varies directly u can make a proportion

16/48 = 176 / y
cross multiply
(16)(y) = (48)(176)
16y = 8448
y = 8448/16
y = 528 <==

and notice that 16/48 and 176/528 both equal 0.3333 because proportions are nothing but equivalent fractions
emmainna [20.7K]3 years ago
5 0
Try to find what y is when x is equal to one.

48/16= 3

So, when x is 1, y is 3.

(1,3)

All you need to do is multiply 176 by 3 for the correct value of y.

176*3= 528

When x= 176, y= 528. (176,528)

I hope this helps!
~cupcake
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Which of the following points lies on the line perpendicular to
sergij07 [2.7K]

Answer:

Step-by-step explanation:

recall that perpendicular lines have slopes that are opposite reciprocals. if u don't know what opposite reciprocals are, according to study.com they are, "The term opposite reciprocals refers to two numbers that have opposite signs and are flipped fractions of each other." for example, 1/2 and -2 are opposite reciprocals.

also recall that the formula to find the slope of a line is m=y2-y1/x2-x1

to solve this problem, we need to go through all of the options and find the slope of that line using the given point and point (0,4). After that, we need to check if that slope is equal to 1. One is the opposite reciprocal of -1, and -1 is the slope of the equation y= -x+4. if the slope is equal to 1, the line will be perpendicular to the line y= -x+4.

lets do the math now:

option a)

m=y2-y1/x2-x1

m=12-4/6-0

m=8/6

m=4/3

this line isnt perpendicular to y= -x +4 cuz the slope is 4/3, which isnt equal to 1

option b)

m=y2-y1/x2-x1

m=0-4/6-0

m=-4/6

m= -2/3

this line isnt perpendicular to y= -x +4 cuz the slope is -2/3, which isnt equal to 1

--------------

ok girl i dont wanna do all the rest of the calculations. just keep doing the same thing with all the other options until you find something that has a slope of 1.

toodles! :)

6 0
3 years ago
It's nothing new: Let's recap rounding to the nearest 100<br>61566=<br>70284=​
kap26 [50]

Answer:

Step-by-step explanation:

61566= 61600

70284= 70300

<h2><em>hope this helps comment if/if not </em></h2>
8 0
2 years ago
If 1/4 of x is 16 what is 3/4 of x
salantis [7]
If 1/4 of x is 16, we multiply 16 x 4 which will give us x=64. 3/4 of 64 = 48

6 0
3 years ago
Read 2 more answers
1.What is the solution to the system of equations?
Ludmilka [50]
1. x=4, y=0
3. x=2.6666, y=0.3333
8 0
3 years ago
What is 5,340,000 in scientific notation?
Lina20 [59]
5.34x10⁶ :) you're welcome!!!
5 0
3 years ago
Read 2 more answers
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