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2 years ago

11

Solve for x

1 answer:

iren2701 [21]2 years ago

3 0

Answer:

2

Step-by-step explanation:

ST and SU are tangents to the $\odot L$ from the point S to the points T and U respectively.
Measures of the tangents drawn from external point to a circle are equal.
$\therefore ST = SU$
$\therefore 7x - 3= 5x+1$
$\therefore 7x - 5x=3+1$
$\therefore 2x=4$
$\therefore x=\frac{4}{2}$
$\therefore x={2}$

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Marina86 [1]

Answer:

64 inches

Step-by-step explanation:

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3 years ago

Need some help on this math question.

melamori03 [73]

Answer:

4x cm.

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3 years ago

to arrive at 2000 liters of 60% saline solution the attendant has to mix a 90% and a 40% saline solution. How many liters of eac

CaHeK987 [17]

Answer:

<u>800 liters</u> of 90% saline solution and <u>1200 liters</u> of 40% saline solution should be used.

Step-by-step explanation:

Given:

At 2000 liters of 60% saline solution the attendant has to mix a 90% and a 40% saline solution.

Now, to find the number of liters of saline solution each should be used.

<u><em>Let the liters of 90% saline solution mix be </em></u> $x.$ <u><em /></u>

<u><em>And let the liters of 40% saline solution mix be</em></u> $y.$

So, the total number of liters:

$x+y=2000.$

$y=2000-x\ \ \ ....(1)$

Now, the total percentage of saline solution:

$90\%\ of\ x+40\%\ of\ y=60\%\ of\ 2000$

$\frac{90}{100}\times x+\frac{40}{100}\times y=\frac{60}{100}\times 2000$

$0.9x+0.4y=1200$

Substituting the value of $y$ from equation (1) we get:

$0.9x+0.4(2000-x)=1200$

$0.9x+800-0.4x=1200$

$0.5x+800=1200$

Subtracting both sides by 800 we get:

$0.5x=400$

Dividing both sides by 0.5 we get:

$x=800.$

<u>The liters of 90% saline solution mix = 800.</u>

Now, substituting the value of $x$ in equation (1) to get the liters of 40% saline solution:

$y=2000-x$

$y=2000-800$

$y=1200.$

<u>Thus, the liters of 40% saline solution = 1200.</u>

Therefore, 800 liters of 90% saline solution and 1200 liters of 40% saline solution should be used.

8 0

3 years ago

What is 4 radical 3 divided by 2?

Arte-miy333 [17]

3/2 = 6
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5 0

3 years ago

The sum of four consecutive odd numbers is 40 what is the greatest of the four numbers

TEA [102]

Answer:

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Step-by-step explanation:

First find the average the numbers (40 / 4 = 10)

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7 0

3 years ago

Read 2 more answers