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CaHeK987 [17]
3 years ago
6

Ivan can paint 25 square feet every half hour. How many square feet can he paint in 3

Mathematics
1 answer:
Nadya [2.5K]3 years ago
4 0

Answer:

150 square feet

Step-by-step explanation:

im just smart :)

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Find the value of x :)
alexira [117]

Answer:

x = 20

Step-by-step explanation:

→ Remember how many degrees are on a straight line

180°

→ Set up an equation

2x + 70 + 3x + 10 = 180

→ Simplify

5x + 80 = 180

→ Minus 80 from both sides

5x = 100

→ Divide both sides by 5

x = 20

3 0
2 years ago
Read 2 more answers
The ratio of green marbles to red marbles is 3 to 5. If there are 18 green marbles, how many red marbles are there?
maks197457 [2]

Answer:

The are 5 marbles

Step-by-step explanation:

51/85 = 3/5 As a result, there are 51 red and 85 green marbles.

6 0
2 years ago
X is a number from the set [3,5,6] and y is a number from the set [4,7,8,9]. If xz/y is an integer and z is a positive integer,
UNO [17]

The smallest possible value of z is the denominator of the reduced fraction x/y. We note the prime factors of the members of set y are

... 2², 7, 2³, 3²

so if there are any even members of set x, the fraction can be reduced to something divided by 2. The number 6 in set x is even, so we have

... 6z/4 = 6·2/4 = 3 (an integer) when z=2

The lowest possible value of z is ...

... B) 2

4 0
3 years ago
7n^2-4n-14=21<br> complete the square
Galina-37 [17]
Answer: (7n - 2)² = 249

Explanation:

1) Given expression: 7n² - 4n - 14 = 21

2) Transpose  - 14 =>

7n² - 4n = 21 + 14

3) Combine like terms =>

7n² - 4n = 35

4) multiply both terms by 7 =>

(7n)² - 4(7n) = 35×7

5) form the squared binomial:

(7n - 2)² - 4 = 35×7

6) Transpose - 4 =>

(7n - 2)² = 35×7 + 4

7) Do the operations on the right side:

(7n - 2)² = 249 or (7n - 2)² - 249 = 0

8) Verify the equivalence by expanding the binomial:

(7n)² - 2(7n) + 4 - 249 = 0

(7n)² - 14n - 245 = 0

Divide by 7: 7n² - 2n - 35 = 0 or 7n² - 2n = 35, which is equivalent to the given expression.
4 0
3 years ago
I need help on this one question ASAP
Leokris [45]

Answer:

choose the last option .

you could check my answer using desmos graph (search on Google)

8 0
2 years ago
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