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ale4655 [162]
2 years ago
12

Divide 81 ft in the ratio 5 :4

Mathematics
2 answers:
Vinil7 [7]2 years ago
7 0

Answer:

7.5

Step-by-step explanation:

Mumz [18]2 years ago
5 0

Answer:

Rr = 51 : 68

Step-by-step explanation:

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Help please thank you
Genrish500 [490]

Answer:

2000

Step-by-step explanation:

1km=1000m

2km=2000m

6 0
2 years ago
What the value of r that makes the value true? r+(-0.14)=0.47
Anika [276]

Answer:

0.61

Step-by-step explanation:

Add 0.14 to both sides of this equation, obtaining r = 0.61.


4 0
2 years ago
20 points!!! first answer gets brainliast. Don't need too much explanation thank you!​
KengaRu [80]

Answer:

The answer to your question is below

Step-by-step explanation:

2. \sqrt{-128}                Just find the prime factors of 128 and simplify

   \sqrt{-2^{7}} = \sqrt{-2^{6} 2} = 2^{3}i \sqrt{2}

   8i\sqrt{2}

3.- \sqrt{-9} + \sqrt{-16}     Get the square roots and simplify

     3i + 4i

     7i

4.- None of the choices is equal to one, because the exponents are pair.

5.- 1/3x² + 10 = 7

    1/3x² = 7 - 10

    1/3x² = -3

         x² = -3(3)

         x² = -9

         x = ±3i

8 0
3 years ago
Brayden has 342 marbles in bags. If there are 9 marbles in each bag, how many bags of marbles does Brayden have If Brayden gives
Firlakuza [10]
Brayden has 38 bags.
After giving away 15 bags of marbles, Brayden is left with 23 bags.

To find out how many bags he has we do 342 divided by 9 which is 38.

To find out how many marbles are in 15 bags we do 15 x 9 which is 135.
We then do 342 - 135 to find out how many marbles he has left which is 207 and divide 207 by 9 to convert that into bags, which is 23.
8 0
2 years ago
F(x)=x/2 +8, what is f(x) when x = 10?<br> 4<br> ОООО<br> 13<br> 36
pentagon [3]

Answer:

13

Step-by-step explanation:

Just replace x with 10, so F(10) = 10/2 + 8. Which is 5 + 8.

7 0
2 years ago
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