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castortr0y [4]
2 years ago
10

How do i answer these? can somebody try to explain it ? maybe using a photo as well

Mathematics
1 answer:
Travka [436]2 years ago
3 0

\large{\color{red}{\rightarrow{-\:0.2}}}

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Marta_Voda [28]
A standard piano has 88 keys on it

6 0
3 years ago
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Find the value for x. Round your answer to the nearest hundredth. Area of the triangle = 8 ft^2​
zmey [24]

Answer:

x = 3.51

Step-by-step explanation:

Since, formula to determine the area f a triangle is,

Area = \frac{1}{2}(\text{Base})(\text{Height})

     8 = \frac{1}{2}(x + 1)(3x - 7)

16 = x(3x - 7) + 1(3x - 7)

16 = 3x² - 7x + 3x - 7

16 = 3x² - 4x - 7

0 = 3x² - 4x - 23

3x²- 4x - 23 = 0

By quadratic formula,

x = \frac{-b\pm \sqrt{b^{2}-4ac}}{2a}

x = \frac{4\pm \sqrt{(-4)^{2}-4(3)(-23)}}{2(3)}

x = \frac{4\pm \sqrt{292}}{6}

x = \frac{4\pm 17.09}{6}

x = 3.51, -2.18

But the length of sides can't be negative.

Therefore, x = 3.51 will be the answer.

8 0
2 years ago
Please Help<br> Question; What is the value of x?
Maksim231197 [3]

Answer:

x+5/30 = 16/20

20x+100=480

20x=380

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Step-by-step explanation:

x+5/30 = 16/20

20x+100=480

20x=380

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6 0
3 years ago
Which number has the same value as 30 tens
Anettt [7]
The answer is 300.

Explanation: 10 times 30 equals 300.
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3 years ago
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Complete the statement. Round the nearest hundredth if necessary. <br> 6.5L=. Gal
Paha777 [63]

Answer:1.72Gal

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8 0
2 years ago
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