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Lerok [7]
3 years ago
6

Khan academy again smh. Please answer! Thanks! ​

Mathematics
1 answer:
Vlad [161]3 years ago
6 0

Answer:

The answer is B

Step-by-step explanation:

x/-y is equivalent to -(x/y)

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Ratio 400g : 1kg can be written in the form 1 : n find the value of n?
zvonat [6]
400 : 1kg
400 : 1000
1 : 2.5

n = 2.5
8 0
2 years ago
Quick I need an answer to this Queston:
fiasKO [112]

Step-by-step explanation:

-  \frac{3}{4} x + 2 \frac{1}{4 } =  \frac{1}{2} x + 1

-  \frac{3}{4} x +  \frac{9}{4}  =  \frac{1}{2} x +  \frac{2}{2}

\frac{ - 3x + 9}{4}  =  \frac{2x + 4}{4}

- 3x + 9 = 2x + 4

- 3x - 2x = 4 - 9

- 5x =  - 5

x =  \frac{ - 5}{ - 5}

x = 1

The answer is C.

6 0
1 year ago
How you write 980,000 in scientific notation?
MatroZZZ [7]

Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the 10. If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.

Answer: 9.8 × 10 (4 squared)

3 0
3 years ago
I have 18 ones 15 hundreds 15 tens 8thousands what number am I
tankabanditka [31]
8 thousands is equal to 8000.
15 hundreds is equal to 1500.
15 tens is equal to 150.
18 ones is equal to 18.

So just add them up.
8000 + 1500 = 9500.
9500 + 150 = 9650.
9650 + 18 = 9668.

The number is 9668
5 0
3 years ago
The area of a circle is 43.25cm2.<br> Find the length of the radius rounded to 2 DP.
Monica [59]

Answer:

3.71 cm

Step-by-step explanation:

Hi there!

Area of a circle equation: A=\pi r^2 where r is the radius

Plug in the area 43.25 cm²

43.25=\pi r^2

Divide both sides by π to isolate r²

\frac{43.25}{\pi} =\frac{\pi r^2}{\pi} \\\frac{43.25}{\pi}=r^2

Take the square root of both sides to isolate r

\sqrt{\frac{43.25}{\pi}} =r\\3.71=r

Therefore, the length of the radius rounded to 2 decimal points is 3.71 cm.

I hope this helps!

8 0
2 years ago
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