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Charra [1.4K]
3 years ago
12

6z + 9 - 7 = 4z + 12

Mathematics
2 answers:
Nata [24]3 years ago
8 0

Answer:

5

Step-by-step explanation:

6z-4z=10

z=5

PlZ Make me brainliest

olasank [31]3 years ago
4 0

Answer:

z=5

Step-by-step explanation:

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There are 1,295 students attending a small university.There are 714 women enrolled.What percent of the students are women?
BARSIC [14]
Total students = 1295

Number of women = 714

Percentage of women = 714/1295 x 100 = 55.14%

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Answer: 55.14% of the students are women.
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3 0
3 years ago
Show that the maximum rate of change, with respect to radius, of the volume of a deflating balloon is four times the sphere's in
dmitriy555 [2]

Step-by-step explanation:

Let's say R is the initial radius of the sphere, and r is the radius at time t.

The volume of the sphere at time t is:

V = 4/3 π r³

Taking derivative with respect to radius:

dV/dr = 4π r²

This is a maximum when r is a maximum, which is when r = R.

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This is 4 times the sphere's initial great circle area, but not the great circle circumference.  The problem statement contains an error.

7 0
3 years ago
After 9 months, the simple interest earned on an investment of $1200 is $72. find the interest rate.
Deffense [45]
Use the formula i=prt, where i is the interest earned, p is the principal, r is the rate (as a decimal fraction) and t is the elapsed time, in years.

Here i = $72 = $1200 r (9/12)                    (9 months is 9/12, or 3/4, of 1 year)
Reducing, 
              $72 = $900r
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7 0
3 years ago
6<br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B%3F%7D%7B%3F%7D%20" id="TexFormula1" title=" \frac{?}{?} " alt=" \frac{?}{?}
alexdok [17]

Answer:

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Step-by-step explanation:

8 0
2 years ago
St. Augustine grass can grow at the rate of 4 over 7 centimeter per week.
saul85 [17]
(4/7)w = 12/7
w = (12/7) / (4/7)
w = 12/7 * 7/4
w = 84/28 = 3....it would take 3 weeks
4 0
2 years ago
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