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Vinvika [58]
2 years ago
8

13) Brainliest and 10 + Points!! :) HELP ASAP PLS

Mathematics
1 answer:
Marina CMI [18]2 years ago
4 0

Answer: 2x^2+6x+20=0

Step-by-step explanation:

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2 5/7+4 3/5= help please
Ainat [17]

Answer:

7\frac{11}{35}

Step-by-step explanation:

2\frac{5}{7}+4\frac{3}{5}

add the whole numbers

2+4=6

combine the fractions

\frac{5}{7}+\frac{3}{5}

LCM is 35 because 7 * 5 =35

\frac{5}{7}=\frac{5\cdot \:5}{7\cdot \:5}=\frac{25}{35}

\frac{3}{5}=\frac{3\cdot \:7}{5\cdot \:7}=\frac{21}{35}

\frac{25}{35}+\frac{21}{35}=\frac{25+21}{35}

=\frac{46}{35}

change the improper fraction into mixed number

6+1\frac{11}{35}

=7\frac{11}{35}

3 0
3 years ago
If each group has the greatest possible number of club members,
Mars2501 [29]
So anybody know the answer yet cuz i don’t
7 0
2 years ago
Among all pairs of numbers with a sum of 105 , find the pair whose product is maximum. Write your answers as fractions reduced t
Bond [772]

Answer: Hence Pair( x, y) = [ 105/2, 105/2]

Step-by-step explanation:

Given that;

Among all pairs of numbers with a sum of 105;

the pair whose product is maximum = ?

so let pairs of numbers with a sum of 105 be x and y respectively

x + y = 105

let y = 105 - x

now

product = xy =  x( 105 - x ) = 105x - x²

now

p(x) = 105x - x²

for maximum value of p

dp/dx =0

⇒ dp/dx = 105 - 2x = 0

2x = 105

x = 105/2

y + x = 105

y = 105 - x

y = 105 - 105/2 = 105/2

Hence Pair( x, y) = [ 105/2, 105/2]

8 0
2 years ago
If two pounds of meat will serve 5 people how many pounds will be needed to serve 13 people
miv72 [106K]
The answer is 5.2 pounds of meat. To find this just divide the number of people by what the information you have about servings. 13/5=2.6(number of sets), then you multiply that by how many pounds are in each set. 2.6 sets* 2 pounds per set= 5.2 pounds.
I hope this helped!
4 0
2 years ago
How to simplify <br> -6k +7k<br> 12r -8 -12<br> n -10 +9n -3<br> -4x-10x<br> -r -10r
Semmy [17]

Answer:

Solve by adding or subtracting like terms. (Ex. 2k + 4k = 6k; 9 + 7 = 16)

- 6k + 7k = 1k = k

(7 - 6 = 1)

12r - 8 - 12 = 12r - 20

(8 + 12 = 20 but sign is negative) 12r will stay the same because there are no terms with a letter r.

n - 10 + 9n - 3 = 9n + n - 10 - 3 = 10n - 10 - 3 = 10n - 13

(n = 1 so 9 + 1 = 10; 10 + 3 = 13 but negative sign)

- 4x - 10x = 14x

(10 + 4 = 14)

- r - 10r = 11r

(r = 1 so 10 + 1 = 11)

6 0
3 years ago
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