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Ne4ueva [31]
4 years ago
11

Factor completely 49x2 − 81. a. (7x 9)2 b. (7x − 9)2 c. (7x 9)(7x − 9) d. 7x − 9

Mathematics
2 answers:
xeze [42]4 years ago
6 0

Answer:

(7x + 9)((7x - 9)

Step-by-step explanation:

vredina [299]4 years ago
3 0
Use the property
(a -b)(a+ b) = a^2 - b^2

49x^2 - 81 = (7x + 9)((7x - 9)
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My question is in the picture pls help
pentagon [3]

Answer:

A. 8cm

Step-by-step explanation:

3 times 2 is 6. 22-6 is 16. 16/2 is 8

8 0
4 years ago
What is greater, 3/5r 4/10?
DanielleElmas [232]
3/5 = .6 and 4/10 = .4, so 3/5 is greater than 4/10
7 0
3 years ago
10-kg batch of a food product has a moisture content of175% dry basis. Calculate the amount of water to beremoved from the produ
sleet_krkn [62]

Answer:

4.9kg of water

Step-by-step explanation:

Dry basis is the percentage ratio of moisture amount to amount of dry product which is 175%

Ratio of moisture amount to dry product = 175 : 100

Mass of food product = 10kg

Amount of moisture in food product = 175/175+100 × 10kg = 175/275 × 10kg = 6.4kg

Wet basis is the percentage ratio of the moisture amount to the total weight of material which is 15%

Ratio of moisture amount to total weight of material is 15 : 100

Amount of moisture in food product = 15/100 × 10kg = 1.5kg

Amount of water contained in the final product = 1.5kg

Amount of other components in the food product = 10kg - 6.4kg = 3.6kg

Total amount = 1.5kg + 3.6kg = 5.1kg

% of water = 1.5kg/5.1kg × 100 = 29%

3 0
3 years ago
12=5x-13x-44. answer it in multi-step equations
fomenos

12=5x-13x-44

combine like terms

12 = -8x -44

add 44 to each side

12+44 = -8x

56= -8x

divide by -8 on each side

56/-8 = x

-7 =x


5 0
3 years ago
Read 2 more answers
Please help with this question!!
barxatty [35]

Answer:

  -29/20

Step-by-step explanation:

The cosecant function is the inverse of the sine function. Both sine and cosecant are odd functions, meaning csc(-x) = -csc(x) = -1/sin(x).

  csc(-θ) = -1/sin(θ) = -1/(20/29) = -29/20

6 0
3 years ago
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