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Rasek [7]
3 years ago
11

Evaluate 7r- 15/8 when r=3 and s=5

Mathematics
1 answer:
HACTEHA [7]3 years ago
6 0

Answer:

Which is equal to 18.

Step-by-step explanation:

7(3) - 15/(5). 7 x 3 is equal to 21, 15/5 is equal to 3. you are now left with 21-  3,

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Solve the equation by factoring.<br> 3z2 + 3z – 6 = 0<br> z = 3 or z = 2
lana66690 [7]

Answer:

<u>3</u><u>z</u><u>^2 + 3z - 6 </u>=0

3

3 (z^2 + z -2) = 0

3(z+2)(z - 1) = 0

z + 2-2 = 0 - 2

z = -2

z - 1 + 1 = 0 + 1

z = 1

Step-by-step explanation:

  1. factor out the GCF (3) and divide everything by it, and then set it equal to zero.
  2. since you have a degree of 2, factor it into two binomials that start with the square root of the first term and end with the square root of the second term.
  3. 3=0 is extraneous solution so we leave it, then we set each binomial equal to zero to solve for z.

note: your solutions is based on the degree or the exponent of the polynomial or the function.

5 0
3 years ago
The average of Paula's two test scores must be 80 or more for her to get at least a B in the class. She got a 72 on her first gr
KengaRu [80]
The answer should be: B) at least 84

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7 0
3 years ago
How many more monthly payments are made for a 5 year loan than a 2 year loan​
Mekhanik [1.2K]

Answer:

36 more loans

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4 0
3 years ago
Start at (12, 3). Move 2 units right and 7 units up. Where do you end up?
Korolek [52]

Answer: (10, 10)

Step-by-step explanation: well if you say start at (12, 3) move 7 units up then 3 units right then it would make it easier to figure it out cus as you can see start at 3 and go up 7 it would stop at 10 then if you go over 2 from 12 it would stop at 10

6 0
3 years ago
Please show how to get answer for if a bus traveled 315 miles in 9 hours, how far did it travel in 3 hours?
Vadim26 [7]

Answer: Its will be 105

Step-by-step explanation: But this is how you get it 315 divided by 3 = 105 or 9x35=315 divided by 3 =105

4 0
2 years ago
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