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3 years ago

What is the sum of (5x + x - 3) and (-4x2 - x +9) ?

Mathematics

1 answer:

s2008m [1.1K]3 years ago

4 0

Answer:

(4x+3)⋅(2−x)

Step-by-step explanation:

(6x - 3) + (((0 - 2^2x^2) - x) + 9)

-4x2 - 3x + 8x + 6

-x • (4x+3)

2 • (4x+3)

(-x+2) • (4x+3)

(4x + 3) • (2 - x)

If this was helpful, please mark brainliest. Have a beautiful day!

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Can u plz help me with this

7nadin3 [17]

Answer:

x = 61, y = 29

Step-by-step explanation:

29+x = 90

x = 61

x + y = 90

y + 61 = 90

y = 29

8 0

2 years ago

Read 2 more answers

Use the Pythagorean identity on page 10 with x = 4 and y= 3 to generate a Pythagorean triple

Dmitry [639]

Answer:

c. 7, 24, 25

Step-by-step explanation:

For the formulas ...

a=x^2-y^2
b=2xy
c=x^2+y^2

we can use the given values of x and y to find the corresponding Pythagorean triple:

a = 4^2 -3^2 = 16 -9 = 7

b = 2·4·3 = 24

c = 4^2 +3^2 = 16 +9 = 25

The generated Pythagorean triple is (7, 24, 25), matching answer C.

6 0

2 years ago

There are 12 red marbles and 8 green marbles in a bag. What is the probability of selecting a red

madam [21]

Answer:

The probability of selecting a red marble, not replacing it, and then selecting a green marble from the bag is 24/95

Step-by-step explanation:

Number of red marbles = 12

Number of green marbles = 8

Total number of marbles = 12+8 = 20

Probability of selecting red marble = $\frac{12}{20}$

Since it is the case of no replacement

Remaining marbles = 20-1 = 19

Number of red marbles = 12-1=11

Number of green marbles = 8

Probability of selecting green marble = $\frac{8}{19}$

So, the probability of selecting a red marble, not replacing it, and then selecting a green marble from the bag = $\frac{12}{20} \times \frac{8}{19}=\frac{24}{95}$

Hence the probability of selecting a red marble, not replacing it, and then selecting a green marble from the bag is 24/95

3 0

3 years ago

Marcy and her sister watched a cartoon movie that was 2 hours and 18 minutes long. after the movie, they played a card game for

Dmitry_Shevchenko [17]

Answer:

1:24pm

Step-by-step explanation:

Couple of ways to solve this. Here is one method
Convert all times to minutes and find the total number of minutes they spent on all 3 activities. Then convert to hours and minutes and subtract from the end time of 5;28 to get the start time of all activities which is also the start time of watching the movie (first activity)

So time spent:

Movie: 2 hours 18 minutes = 2 * 60 + 18 = 120 + 18 = 138 minutes
Card game: 34 minutes
Soccer: 1 hour 12 minutes = 1 * 60 + 12 = 72 minutes

Total time spent = 138 + 34 + 72 = 244 minutes = 4 hours and 04 minutes

Subtract 4:04 from 5:28 to get 1:24pm

Check
Movie watch starts at 4:04, ends at 1:24 + 2:18 or 3:42pm
Card game starts at 3:42pm ends at 3:42+0:34 ==> 4:16pm
Soccer starts at 4:16pm ends at 4:16pm + 1:12 ==> 5;28pm

7 0

2 years ago

Please help - Will give BRAINLIEST!!

Ivan

Answer:

For the first one:

A' (-8,6)

B' (-9,10)

C' (-3,9)

D' (-2,5)

Step-by-step explanation:

6 0

1 year ago