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jenyasd209 [6]
3 years ago
13

CAN SOMEONE HELP MEEEE

Mathematics
1 answer:
lianna [129]3 years ago
5 0

Answer:

45%

Step-by-step explanation:

450 observations with more than 3 family members, out of 1000 total observed families.

\frac{450}{1000} =.45

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The variable z varies jointly with the square of x and inversely with y. Z = 4.4 when x = 3 and y =2. Find an equation that rela
Mrac [35]

Answer:

z = 0.9778x^2 / y.

Step-by-step explanation:

When z varies with the square of x the equation is z = kx^2 where k = a constant.

If it also varies inversely with y the equation is z = kx^2/y.

When z = 4.4 , x = 3 and y = 2 we have:-

4.4 = k * 3^2 / 2

Multiplying by 2:

8.8 = 9k

k = 8.8 / 9  

= 0.9778.

So the required formula is z = 0.9778x^2 / y.


4 0
3 years ago
ILL GIVE BRAIN PLZ HELP ASAP
HACTEHA [7]

Answer:

C.

Step-by-step explanation:

In total, Sophie needs $230.40.

Let's form an equation. 230.40 = 12.80x

You'll need to divide both sides by 12.80 to get the variable, x, by itself.

18 = x

Therefore the answer is C.

7 0
3 years ago
Read 2 more answers
Help agian plz if u do u will get points
igor_vitrenko [27]
The sales tax is 3.49 I think
3 0
3 years ago
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If 11 + 11 = 22 and 10 + 12 = 22 then which of the following is true?
xz_007 [3.2K]
B. 11+11=10+12


11+11 is 22
And 10+12 is 22
So the statement is true because both sides are equal
6 0
3 years ago
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1/2x+101=200<br> Show work
givi [52]

Answer:

x = 198

Step-by-step explanation:

1/2x + 101 = 200.

Subtract 101 from both sides.

1/2x = 99

You want x by itself, therefore you have to get rid of 1/2. The opposite of diving by two, is multiplying by two.. therefore, you must multiply both sides by two.

x=99*2

x=198

7 0
3 years ago
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