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Alborosie
3 years ago
8

Given that x:2=7:5 Calculate the value of x

Mathematics
1 answer:
Nataliya [291]3 years ago
8 0

Answer:

x=2.8≈3

Step-by-step explanation:

x:2=7:5

\frac{x}{2}=\frac{7}{5}

by cross-multiplication

x×5=2×7

5x=14

x=14/5

x=2.8≈3

i hope this will help you :)

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What is the arc length of the arc sub tended in a circle with radius 6 and an angle of 7 pi/ 8
KengaRu [80]

Answer:

Formula for the Arc length is given by:

\text{Arc length} = 2 \pi r \cdot \frac{\theta}{360^{\circ}}

As per the statement:

radius of circle(r) = 6 units

Angle (\theta) = \frac{7 \pi}{8} radian

Use conversion:

1 rad = \frac{180}{\pi}

\frac{7 \pi}{8} = \frac{180}{\pi} \cdot \frac{7 \pi}{8} = \frac{1260}{8} = 157.5^{\circ}

then;

substitute these given values we have;

Use value of \pi = 3.14

\text{Arc length} = 2\cdot 3.14 \cdot (6) \cdot \frac{157.5^{\circ}}{360^{\circ}}

or

\text{Arc length} = 2\cdot 3.14 \cdot (6) \cdot 0.4375

Simplify:

\text{Arc length}=16.485

Therefore, the arc length of the arc substended in a circle with radius 6 units an angle of 7 pi/8 is 16.485 units

7 0
3 years ago
<img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B27%7D%20%20%5Ctimes%20%20%5Csqrt%7B75%7D%20" id="TexFormula1" title=" \sqrt{27}
Harman [31]

Answer:

44.95

Step-by-step explanation:

\sqrt{27}  \times  \sqrt{75  }  \\  = 5.19 \times 8.66 \\ 44.9454

Two decimal places = 44.95

5 0
3 years ago
What is the square root of 100?
Naily [24]
The square root of 100 is 10
6 0
3 years ago
I could use some help w/ explanation please
Vsevolod [243]

9514 1404 393

Answer:

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Step-by-step explanation:

The question is asking the amount invested in fund B. We can let 'b' represent that amount. Then the amount invested in fund A is (6000-b). The total profit from the investments is ...

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  0.05b = 120 . . . . . . . . . subtract 120

  b = 2400 . . . . . . . . . . .divide by 0.05

Alonzo invested $2400 in fund B.

7 0
3 years ago
If you spend $150 on 3 items and 1 item cost 50% more than the other 2 How much does it cost?
ryzh [129]
$75 Hope that helps.

8 0
3 years ago
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