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jolli1 [7]
3 years ago
15

What is the value of x in the proportion? 2/5=x/21-x

Mathematics
1 answer:
antoniya [11.8K]3 years ago
4 0

Answer:

6

Step-by-step explanation:

Hope it can help you.........

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Which are the solutions of the quadratic equation x^2=9x+6
zzz [600]
You can use the quadratic equation to solve this once you have this set equal to zero. The answers would be roughly 9.6 and -0.6. 
8 0
2 years ago
A card is drawn from the deck. What is the probability it is either black face card or a<br> spade?
IRINA_888 [86]

Answer:

about 37% chance or, rounding to the nearest tenth, 36.5% chance

Step-by-step explanation:

since there are only 6 black face cards out of 52 cards, so the fraction is 6/52

there are also 13 spade cards out of 52 cards, so the fraction is 13/52

to find the percent you have to add the two fractions becuase all you want to do is draw a black face card or a spade card. when you add them you get 19/52

then dividing the fraction gives you .3653846154 on my calculator :)

4 0
3 years ago
ben walks at a rate of3 miles per hour. he runs at a rate of 6 miles per hour. in one week, the combined distance that he walks
Ainat [17]
3W+6R=210

For R:25
3W+6(25)=210
3W=150=210
3W=60
W=30
8 0
3 years ago
What number is 12 times greater than the sum of the absolute values of the numbers 47 and (-56)
AysviL [449]

Answer:

1,236

Step-by-step explanation:

The absolute value defines as being the positive of the number.

Absolute value of 47 - 47

Absolute value of (-56) - 56

47 + 56 = 103

103 * 12 = 1,236

Hope this helps!

7 0
2 years ago
Find the missing terms in the following geometric sequence.
Ber [7]
The answer is D. The action taken between each number is multiplying by 3. With this question, I'd say an easy way to answer it is to look at each answer given (in this case 36 and 108) and see if it fits the sequence with the given values (12 and 324).
7 0
3 years ago
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