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ValentinkaMS [17]
3 years ago
13

Evaluate this expression 3(x²+2) - 3y when x = 2 and y = 2/3

Mathematics
1 answer:
GarryVolchara [31]3 years ago
7 0
3(x2+2)-3y
3((2)^2+2) - 3(2/3)
first exponents,
3(4+2) - 3(2/3)
then parenthesese
distribute 3
12 + 6 - 2
18 - 2
16
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The equation is ax+r=7 <br><br>how do I solve for r??
Strike441 [17]
The solution is r= 7/a-x How did i do this?
Your equation is ax+ r=7, so the goal is to isolate the r. You begin by dividing the a from the ax. Remember, what you do to one side, you must do to the other. So you do 7/a, since you can't simplify 7/a, leave it as it is. Next, your equation should look like this x+r=7/a. In order to isolate the r, you move the x to the other side by subtracting, which leaves you with the answer of r= 7/a-x.
Hope this helped!
7 0
4 years ago
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David has counters. Lisa has 5 more counters than David. Samia has 4 times as many counters as David. The total number of counte
s2008m [1.1K]

Answer:

if 'c' equals number of counters, the answer is 6c + 5

Step-by-step explanation:

david has 'c'

lisa has '5+c'

samia has '4c'

add all terms together:  c + 5 + c + 4c = 6c + 5

3 0
3 years ago
Combine like terms<br><br> 4y^2+4(7y^2-8)=<br><br> please show your work
kirza4 [7]

Answer:

32y^2-32

Step-by-step explanation:

4y^2+4(7y^2-8)

4y^2+28y^2-32

32y^2-32

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8 0
3 years ago
Use the Euclidean algorithm to determine the greatest common divisor of 2288 and 4875
Irina-Kira [14]

Answer:

13

Step-by-step explanation:

We have to find greatest common divisor of two number 2288 and 4875.

Now, greatest common divisor of two number is defined as the highest common factor that divides both the number.

We can use the Euclidean algorithm to do so.

Since 4875 is the larger of the two number

4875 ÷ 2288: Quotient = 2, Remainder = 299

2288 ÷ 299: Quotient = 7, Remainder = 195

299 ÷ 195: Quotient = 1, Remainder = 104

195 ÷ 104: Quotient  = 1, Remainder = 91

104 ÷ 91: Quotient  = 1, Remainder = 13

91 ÷ 13: Quotient =7, Remainder = 0

Hence, we stop here and the greatest common divisor = 13

4 0
3 years ago
What mixed number is equal to 90.14
Elenna [48]
90 and 7 over 50 (this is in simplest form)
8 0
4 years ago
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