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mote1985 [20]
3 years ago
13

What is the educated guess in mathematics

Mathematics
1 answer:
Ludmilka [50]3 years ago
8 0

Answer:

An educated guess is likely to be correct, as that person has a certain amount of knowledge based on the question.

Step-by-step explanation:

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Mrs, Hughes' class has 22 students.Her principal tells her that her class will increase to 30 students. Which equation can be us
Ipatiy [6.2K]
First: work out the difference (increase) between the two numbers you are comparing. Increase = New number - Original Number

Then: divide the increase by the original number and multiply the answer by 100. % Increase = Increase ÷ Original Numberx100<span>
30 - 22 = 8
8</span> ÷ 22x100 = 36.3636363636
6 0
3 years ago
Evaluate for given replacement
jasenka [17]
First, plug in 7 for m

|6 - 2(7)|
|6 - 14|
|-8|
since it's an absolute value, the answer will be positive
answer: 8
4 0
3 years ago
Which factored form of 10x + 120x + 320 reveals all the zeros of the function it defines?
Readme [11.4K]

Answer:

b

Step-by-step explanation:

6 0
3 years ago
43 coins, no nickels, $4.51 equal amount amount of pennies and dimes, how many of each coin
Sonbull [250]
Set up
Let the dimes = d
Let the pennies = p
Let the quarters = q

Equations
You cannot mean that the pennies and dimes have equal numbers. That would mean that each had 21.5 members. Now could you mean that the dime and penny amount could be the same with 43 coins that total 4.00. Four dollars means that you need 40 dimes alone. It must mean that you are including quarters. 

p + d + p = 43          (1)
p = d                        (2)
p +10d +25q = 451  (3)

Note how this last equation = was derived. You have to multiply the dimes by 10 and he quarters by 100 and the total by 100 to get the numbers all in pennies.

Put the results of 2 into 1.
2p  + q = 43                   (4)  
You need to modify equation 3 as well.
p + 10p + 25q = 451
11p + 25q  = 451           (5)

Solve the new equations
2p +  q = 43               (4)
11p + 25q = 451        (5)

Multiply 4 by 25
25(2p- + q = 43)
50p + 25q = 1075     (6)  Subtract (5) from (6)
<u>11p + 25q = 451
</u>39p = 624                        Divide by 39
p = 624 / 39
p = 16

Since the pennies and dimes are equal there are 16 dimes
p + d + q = 43
16 + 16 + q = 43
32 + q = 43
q = 11

Check
16 + 10*16 + 11*25 = ?
16 + 160 + 275  = ?
451 = ?

Nice problem. Thanks for posting.
3 0
3 years ago
What’s the solution of y= 3x-1 and y= 3x+4
julia-pushkina [17]

Step-by-step explanation:

solution ? you mean where both lines cross each other ?

these are 2 parallel lines (same slope, but different y-intercept), so they never cross each other.

there is no solution.

formally :

3x - 1 = 3x + 4

-1 = 4

this is wrong. therefore there is no solution.

3 0
2 years ago
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