3 years ago

Find the missing value for X

1 answer:

7 0

If we assume that BC is bisecting AD, and that AE is half of AD, we can set up the equation:

$2(19)=5x-7$

Then we can solve directly for x:

$38=5x-7$
$45=5x$
$x=9$

So we have then calculated x which is equal to 9.

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A cylinder has a volume of 90pi and a radius of 3. what is the height?

kykrilka [37]

Step-by-step explanation:

volume of cylinder=90π
πr²h=90π
3²h=90
9h=90
h=90/9
h=10

hope it helps.

8 0

2 years ago

One solution of x^2-64=0 is 8. what is the other solution?

ivann1987 [24]

X² - 64 = 0
(x - 8)(x + 8) = 0

x = - 8, 8

Your other solution is - 8

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3 years ago

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Which equation is a point slope form equation for line AB?

MAVERICK [17]

Answer:

the answer is c

Step-by-step explanation:

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3 years ago

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if y varies inversely as x and y = 194 when x = -13, find y when x = 50. Round your answer to the nearest hundredth, if necessar

pashok25 [27]

Step-by-step explanation:

Since, y varies inversely as x.

$\therefore \: y = \frac{k}{x} \\ (k = constant \: of \: proportionality) \\ \therefore \: xy = k...(1) \\ plug \: y = 194 \: \: and \: \: x = - 13 \: in \: (1) \\ \therefore \: - 13 \times 194= k \\ \therefore \: k = - 2522 \\ substituting \: k = - 2522 \: in \: (1) \\ xy = - 2522...(2) \\ this \: is \: equation \: of \: variation. \\ plug \: x = 50 \: in \: (2) \\ 50 \times y = - 2522 \\ \therefore \:y = \frac{ - 2522}{50} \\ \huge \red{ \boxed{\therefore \:y = - 50.44}}$

8 0

3 years ago

Convert 2x - 3y + 1 = 0 to slope-intercept form

Dafna11 [192]

Slope-intercept form is y=mx+b. our goal is to get y by itself on one side of the equation.

2x-3y+1=0
2x+1=3y
3y=2x+1
y=(2/3)x+1/3

That is the same function but in slope-intercept form.

6 0

3 years ago