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Gala2k [10]
3 years ago
13

Solve for c when a=11+4b-4c

Mathematics
2 answers:
laila [671]3 years ago
4 0
Remember, you can do anything to an equation as long as yo do it to both sides
minus 11 bothsides
a-11=4b-4c
minus 4b both sides
a-11-4b=-4c
divide both sides by 4
\frac{a-11-4b}{4}=-c
multiply both sides by -1
\frac{-a+11+4b}{4}=c
c=\frac{-a+11+4b}{4}
c=\frac{4b-1+11}{4}
Marina86 [1]3 years ago
3 0
11+4=15-4=11
So a=11 I think so am not sure
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Select "Yes" or "No" to indicate whether the ordered pair is on the graph of the function f(x)=−25^x+1.
KengaRu [80]
<span>(1,625) No (0,-25) No (-1,-1) No Think about what an integer exponent means for an negative base and you'll understand this problem. For instance the powers of -25 would be -25^1 = -25 -25^2 = (-25) * (-25) = 625 -25^3 = (-25)*(-25)*(-25) = -15625 and so on, giving 390625, -9765625, 244140625, etc. But that's a different subject. For the ordered pairs given, let's check them out. (1,625) -25^1 + 1 = -25 + 1 = -24. And -24 is not equal to 625, so "No". (0,-25) -25^0 + 1 = 1 +1 = 2. Note: Any real number other than 0 raised to the 0th power is 1. And 2 is not equal to -25, so "No". (-1,-1) -25^(-1) + 1 = 1/(-25^1) + 1 = 1/-25 + 1 = 24/25. And 24/25 is not equal to -1, so also "No".</span>
3 0
3 years ago
Read 2 more answers
I'm confused on this<br>(this is 12 year old math) ​
Gemiola [76]

Answer: the top box can be the linear equation y=40x+15 and the bottom box is 40

Step-by-step explanation:

If you swim 15 more minutes than your friend and your swam 55 minutes, that means your friend only swam 40 minutes. The set amount of time that your friend swims for <em>x</em> is 40 minutes. So the additional time you swim is <em>b</em>, 15 minutes.

7 0
2 years ago
The archway of the main entrance of a university is modeled by the quadratic equation
Scilla [17]

Answer:

B. (1,5) and (5.25, 3.94)

Step-by-step explanation:

The answer is where the 2 equations intersect.

We need to solve the following system of equations:

y = -x^2 + 6x

4y = 21 - x

From the second equation:

x = 21 - 4y

Plug this into the first equation:

y = -(21 - 4y)^2 + 6(21 - 4y)

y = -(441 - 168y + 16y^2)+  126 - 24y

y = -441 + 168y - 16y^2 +  126 - 24y

16y^2 + y - 168y + 24y + 441 - 126 = 0

16y^2 - 143y + 315 = 0

y = [-(-143) +/- sqrt ((-143)^2 - 4 * 16 * 315)]/ (2*16)

y = 5, 3.938

When y = 5:

x = 21 - 4(5) = 1

When y = 3.938

x = 21 - 4(3.938) = 5.25.

3 0
3 years ago
Harry earned ₹40,000 for 80 days of work. He was paid an equal amount each day. How much did he earn per day?
Katyanochek1 [597]

Answer: ₹500

Step-by-step explanation:

Harry earned ₹500 every day.

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₹40,000 divided by 80 will turn 80 days to 1 day which answers your question.

4 0
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5 0
2 years ago
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