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meriva
4 years ago
11

z varies directly with x^2 and inversely with y. When x = 2 and y = 4, z = 3. What is the value of z when x = 4 and y = 9?

Mathematics
1 answer:
Aloiza [94]4 years ago
5 0
Attached the solution and work.

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Write an equation of the line with the given slope, m, and y-intercept (0,b).<br><br> m = 8, b = 9
Advocard [28]

Answer:

Equation: Y=8x+9, y-intercept: (0,9)

Step-by-step explanation:

An equation is set up in the format of y = mx+b, so simply plug the appropriate numbers in for those variables.

5 0
3 years ago
Please help im really confused<br><br> Which expression is equivalent to 4(7 + 8)?
Hatshy [7]

Answer:

With the answer choices:

A. 11 + 8

B. 11 + 12

C. 28 + 12

D. 28 + 32

The answer would be 28+32.

Step-by-step explanation:

Use the distributive law.

4 * 7 = 28

4 * 8 = 32

Hope this helps!

8 0
3 years ago
Plz solve!!!!! I will give 25 points and brainliest!! and plz, no tiny links<br> 1 3/7*2/5
Airida [17]

Answer:

10/7*2/5= 20/35=4/7

5 0
3 years ago
Read 2 more answers
George has $5.00 to spend on candy. If each candy bar costs $0.85, how many candy bars can he buy?
MrRissso [65]
A he can buy five candy bars and will have 88 cents left over.
7 0
3 years ago
The number of books sold over the course of the four-day book fair were 190, 100, 272, and 74. Assume that samples of size 2 are
g100num [7]

Answer:

the answer is below

Step-by-step explanation:

We have the total number of possible samples = 4 * 4 = 16 (As 4 choices for each value)

in addition we have to as all sample occur with equal probability, probability of each sample = 1/16, below is samling distribution of mean

x1 x2 probabilityP(x1,x2) sample mean

190 190    1/16                 190

190 100    1/16                 145

190 272    1/16                 231

190 74    1/16                 132

100 190    1/16                 145

100 100    1/16                 100

100 272    1/16                 186

100 74    1/16                        87

272 190    1/16                 231

272 100    1/16                 186

272 272    1/16                 272

272 74    1/16                 173

74 190    1/16                 132

74 100    1/16                 87

74 272    1/16                 173

74 74    1/16                 74

Summarizing above with adding duplicate values

sample mean   probability

       74              1/16

      87               1/8

    100                1/16

    132                1/8

    145                1/8

    173                1/8

   186                1/8

   190               1/16

    231               1/8

   272               1/16

5 0
4 years ago
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