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Naya [18.7K]
3 years ago
9

Suppose that y varies inversely with x.Give x=3 when y=8 Find y when x=4

Mathematics
1 answer:
Alex73 [517]3 years ago
4 0

Answer:

y=10.667

Step-by-step explanation:

cross multiply

3/8=4/y

4*8/3

=32/3

y=10.667

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Write an equation in point slope form for the line that passes through the given point and the given slope
ad-work [718]

Answer:

y + 7 = 45(x + 2).

Step-by-step explanation:

y - y1 = m(x - x1)

Here m = 45 and (x1, y1) = (-2, -7) so we have:

y - (-7) = 45(x - (-2))

y + 7 = 45(x + 2).

4 0
3 years ago
A candy distributor needs to mix a 30% fat-content chocolate with a 40% fat-content chocolate to create 150 kilograms of a 32% f
Ber [7]

Answer:

120 kg of 30% fat-content chocolate and 30 kg of 40% fat-content chocolate.

Step-by-step explanation:

We are given that a candy distributor needs to mix a 30% fat-content chocolate with a 40% fat-content chocolate to create 150 kilograms of a 32% fat-content chocolate.

Let the amount of 30% fat-content chocolate be 'x' and the amount of 40% fat-content chocolate be 'y'.

So, according to the question;

x + y = 150 ------------ [equation 1]

and 30\% \text{ of } x +  40\% \text{ of } y=32\% \text{ of } 150

30x+40y= 32 \times 150

30x+40\times (150-x)= 4800

30x+6000-40x= 4800

10x = 6000-4800

x=\frac{1200}{10}

x = 120 kg

Now, putting the value of x in equation 1, we get;

x + y = 150

120 + y = 150

y = 30 kg

Hence, 120 kg of 30% fat-content chocolate and 30 kg of 40% fat-content chocolate.

3 0
3 years ago
I need help please.​
pshichka [43]

Answer:

e

Step-by-step explanation:

3 0
3 years ago
Write the equation of the line that is perpendicular to 4x - 3y = 6 and passes through (4, -2)
Svetlanka [38]
Perpendicular is slope multiplies to -1
for
ax+by=c
slope=-a/b

4x-3y=6
-a/b=-4/-3=4/3
perpendicular to 4/3 is -3/4

point slope form
y-y1=m(x-x1)
for slope=m
a point is (x1,y1)

point (4,-2)
slope is -3/4
y-(-2)=-3/4(x-4)
y+2=-3/4(x-4)
or converted
y=-3/4x+1
or
3x+4y=4
5 0
3 years ago
Write the ratios for sin x and cos XWrite the ratios for <br> sin
VashaNatasha [74]

\sin(x)  =  \frac{ \sqrt{119} }{12}  \\  \cos(x)  =  \frac{5}{12}

7 0
4 years ago
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