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Sav [38]
3 years ago
7

Add the linear expressions: 2n + 6 and 6n -2

Mathematics
1 answer:
adelina 88 [10]3 years ago
7 0
Just add like terms so (2n + 6n) + (6-2) = 8n-4
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Divide 33 photos into groups so the ratio is 4 to 7
Vikki [24]
4:7....added = 11

4/11(33) = 132/11 = 12 <== one group
7/11(33) = 231/11 = 21 <== the other group
7 0
4 years ago
the area of a right triangle is 77 m^2. the hypotenuse has a length of √317 m. what is the length of the legs?​
Alexxandr [17]

Answer:

11 m and 14 m

Step-by-step explanation:

Legs: x and y

---

1/2xy= 77  ⇒ xy= 154

√x²+y²= √317 ⇒ x²+y²=317

x²+y²+2xy= (x+y)²= 2*154+317= 625 ⇒ x+y= √625= 25

x= 25-y

xy=154 ⇒  y(25-y)= 154 ⇒ 25y- y²=154 ⇒ y²- 25y +154=0 ⇒ y=11 and y=14

x= 25-y= 14 and 11

4 0
4 years ago
there are 6 red marbles, 4 blue marbles, n 15 green marbles in jar. if you reach in n randomly draw one, what is the probability
Arte-miy333 [17]

Answer:

6÷25

Step-by-step explanation:

Favourable outcomes are 6,and the total outcomes are

6 + 4  + 15 = 25

So the probability of getting fed marble is Favourable outcome ÷ total outcome=6÷25.

7 0
3 years ago
What does "xy" mean in Math
nadya68 [22]
XY is the value of something I think
6 0
3 years ago
Solve 4ax + 5ax = 3ax + 6 for x. Assume a ≠0
jok3333 [9.3K]

Answer:

c. x = 1/a

Step-by-step explanation:

4ax + 5ax = 3ax + 6

9ax = 3ax + 6 (addition property of equality)

6ax = 6 (subtraction property of equality)

6ax/6 = 6/6 (division property of equality)

ax/a = 1/a (simplify)

x = 1/a

7 0
3 years ago
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