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wel
3 years ago
10

46 POINTS!!!

Mathematics
1 answer:
charle [14.2K]3 years ago
6 0

Answer:

<h2><u>r = -0.4</u></h2>

Step-by-step explanation:  57.7r + 23.23 = 2.57          57.7/57.7  = -20.66/57.7

                                                        - 23.23  - 23.23                      

                                              57.7r = -20.66

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Solve the quadratic equation algebraically 5-x&lt;2(x-3)+5
vodka [1.7K]

Answer:

x>2

Step-by-step explanation:

5-x<2(x-3)+5

5-x<2x-6+5

5-x<2x-1

6-x<2x

6<3x

x>2

7 0
3 years ago
Determine the solution set of (2x - 5)2 = 11.
zhenek [66]
I think what you meant was

(2x - 5)² = 11 -- (1)

Square root both sides of (1), i.e.

√(2x - 5)² = ± √11 -- (2)

From (2), we have

2x - 5 = ± √11 -- (3)

By adding 5 to both sides in (3), we have

2x = 5 ± √11 -- (4)

Divide both sides of (4) by 2, and we obtain

x = (5 ± √11)/2 -- (5)

From (5), the solution set of (1) is

x = (5 + √11)/2, (5 - √11)/2 ...Ans.
8 0
3 years ago
Read 2 more answers
Help I don't understand this, Can someone explain this to me?
saul85 [17]

Answer:

The second answer is correct (5 x 1,000,000,000)

Step-by-step explanation:

Just count the number of zeros. Multiplying a number liket his by five doesn't change the number of zeros

7 0
3 years ago
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A pouch contains 6 red marbles and 2 blue marbles. A second pouch contains 3 red marbles and 7 blue marbles. A marble will be dr
aksik [14]

Answer:

2/8

Step-by-step explanation:

because there are 2 blue marbles

add those up with the red marbles(6) and you get 8 marbles. But the chance for picking up a blue marble would be 2/8

4 0
3 years ago
HELP ME! @all smart people
larisa86 [58]
The first one is 5.3 you multiply 4x4 which is 16 then divide by 3 which then gives you the answer
6 0
3 years ago
Read 2 more answers
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