a man has some hens and cows. if the number of heads is 48 and number of feet is 140. find the number of hens.
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Related Questions
Tammy mixes the letters s, c, h, o, o, and l thoroughly. without looking, allen draws one letter. expressed as a fraction, decimal, and percentage, what is the probability that allen will not select a consonant? (1 point)
Carlos has 58 pencils. What is the value of the digit 5 in this number?
Translate the sentence into an equation. Twice the sum of a number and 5 equals 8
Two same-sized triangular prisms are attached to a rectangular prism as shown below.If a = 20 cm, b = 13 cm, c = 12 cm, d = 5 cm, and e = 8 cm, what is the surface area of the figure?a 1,208 square centimetersb 1,592 square centimetersc 1,004 square centimetersd 1,400 square centimeters
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Answer:
the right answer is:
- (A)
Step-by-step explanation:
You take the equations that the exercise give you:
- x + y = 4
- x - y = a
Now you clear the "y" variable in any equation you want, in this case, I'm gonna use the second equation:
- x - y = a
- -y = a - x
3. y = x - a
And now, you'll replace this third equation in the equation you didn't take (the first in this case).
- x + y = 4
- x + (x - a) = 4
- x + x - a = 4
Add the x variables:
- 2x - a = 4
- 2x = 4 + a
- x = (4 + a) / 2
That's the answer of the exercise, but you can represent this in this form:
- x = (4 + a) / 2 ↔
- x = (4 + a) / 2 ↔
By this reason, the right answer is .
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Answer:
6 stops.
Step-by-step explanation:
The answer is 6 stops, because 4 times 6 is 24 and 24 plus 7 is 31.
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y = -x + 7
y = x + 8
y = -3x + 7
y = x + 5
y = -2x + 11
y = 8
y = -3x + 7
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separate x + 8 and -x + 7 and set them both to equal y
y = x + 8 ; y = -x + 7
Answer:
The answer is y = x + 8
y = -x + 7
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Answer:
24 minutes.
Step-by-step explanation:
I hour of television plus 36 minutes equals 96 minutes of T.V. (way too much if you ask me XD). Divide the 96 by the previous 24, resulting in 4. 4x6= 24 again, so therefore there are 24 minutes of commercials in I hour, 36 minutes of television.
Using this graph, determine and state all values of x for which f(x) = g(x).
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g(x) = 2x - 4
f(x) = g(x)
-2x² = 2x - 4
-2x² - 2x = 2x - 2x - 4
-2x² - 2x + 4 = -4 + 4
-2x² - 2x + 4 = 0
-2(x²) - 2(x) - 2(-2) = 0
-2(x² - x - 2) = 0
-2 -2
x² - x - 2 = 0
x² + 2x - x - 2 = 0
x(x) + x(2) - 1(x) - 1(2) = 0
x(x + 2) - 1(x + 2) = 0
(x - 1)(x + 2) = 0
x - 1 = 0 or x + 2 = 0
+ 1 + 1 - 2 - 2
x = 1 or x = -2
f(x) = g(x)
-2x² = 2x - 4
-2(-2)² = 2(-2) - 4
-2(4) = -4 - 4
-8 = -8
or
f(x) = g(x)
-2x² = 2x - 4
-2(1)² = 2(1) - 4
-2 = 2 - 4
-2 = -2
Solution Sets: {(-2, -8), (1, -2)}