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Murrr4er [49]
2 years ago
15

What is the missing number in the number sentence?

Mathematics
2 answers:
MatroZZZ [7]2 years ago
8 0

Answer:

the missing number is 47............

stepladder [879]2 years ago
7 0

Answer:

47

Step-by-step explanation:

46+10=56. That means that ?+9 needs to equal 56.

56-9=47 which is the missing number.

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In the number 668 the 6 in the hundreds place is _ the value of the 6 in the tens place
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6 in the hundreds place = 600
6 in the tens place =60
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3 years ago
Convert to scientific notation: 0.0509.
fomenos

Answer:

5.09 × 10^-2

Step-by-step explanation:

You have to take the number go to the decimal and move it until you get to the first number and in this case, it is 5 put the decimal there. To write it you have to count the number of times you moved the decimal. when doing this it will always be a number times 10^ the number you moved the decimal.

5 0
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The eagles won 3\5 of their regular season games and 4/5 of their tournament games they played 15 regular season games and 5 tou
GalinKa [24]
The eagles won 9 regular season games and 4 tournament games so that would equal out to 13 games the Eagles have won.
6 0
3 years ago
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Work out the area of the triangle.
sveta [45]

Answer:

120

Step-by-step explanation:

10*24=240

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7 0
2 years ago
Solve for w, where w is a real number.
Ber [7]

Answer:

w= 9

Step-by-step explanation:

\sqrt{ - 4w + 61}  = w - 4

Square both sides:

-4w +61= (w -4)²

\boxed{(a - b)^{2}  = a^2 -2ab + b^2 }

Expand:

-4w +61= w² -2(w)(4) +4²

-4w +61= w² -8w +16

Simplify:

w² -8w +16 +4w -61= 0

w² -4w -45= 0

Factorize:

(w -9)(w +5)= 0

w -9= 0 or w +5= 0

w= 9 or w= -5 (reject)

Note:

-5 is rejected since we are only taking the positive value of the square root here. If the negative square root is taken into consideration, then w= -5 would give us -9 on both sides of the equation.

<u>Why </u><u>do </u><u>we </u><u>use </u><u>negative </u><u>square </u><u>root?</u>

When solving an equation such as x²= 4,

we have to consider than squaring any number removes the negative sign i.e., the result of a squared number is always positive.

In the case of x²= 4, x can be 2 or -2. Thus, whenever we introduce a square root, a '±' must be used.

However, back to our question, we did not introduce the square root so we should not consider the negative square root value.

6 0
2 years ago
Read 2 more answers
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