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Charra [1.4K]
4 years ago
14

If f(x)=-2x-3 find the value f(4y)

Mathematics
1 answer:
jasenka [17]4 years ago
4 0

Answer:

f(4y) = -8y - 3

Step-by-step explanation:

Step 1: Define variables

f(x) = -2x - 3

f(4y) = x = 4y

Step 2: Plug in x = 4y

f(4y) = -2(4y) - 3

f(4y) = -8y - 3

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The cost c, for manufacturing x flags is given by c=x? -24x +39. Find the number of flags manufactured if the cost is $120.
IRINA_888 [86]

9514 1404 393

Answer:

  27

Step-by-step explanation:

You want to find x when c = 120.

  120 = x^2 -24x +39

  x^2 -24x -81 = 0 . . . . . . subtract 120 to put in standard form

  (x -27)(x +3) = 0 . . . . .  .factor it

Solutions are ...

  x = 27, x = -3 . . . . . values of x that make the factors zero

The number of flags manufactured for a cost of $120 is 27 flags.

8 0
3 years ago
A family goes out to eat. The meal costs $44. The sales tax rate is 9%. They leave a 20% tip. How much did they spend?
REY [17]

Answer:

$56.76

Step-by-step explanation:

$56.76 because 20% of 44 is 8.80 which is the tip and 9% of 44 is 3.96 which is the tax rate giving you an answer of $56.76. Hope this helps!

6 0
3 years ago
The perimeter of parallelogram ABCD is equal to 10 cm. Find the length of diagonal
andreev551 [17]
The perimeter of ABCD is 10, therefore, AB+AD=half of 10=5
the perimeter of ABD is 8, therefore, BD=ABD-(AB+AD)=8-5=3
3cm is the answer. 
7 0
3 years ago
Find the derivative of the image below
Nata [24]

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\text{The derivative  is  now in a  form of}~ x^A (B  + C \log_D (x))

3 0
2 years ago
Brainly Quiz! Do this under 5 mins!
gregori [183]
3/4 hr=60 times 3/4=45mins
45/6=7.5 letters
that is pretty slow if you ask me




1/4 times what=5/6
times 4/1 both sides
what=20/6
what=10/3
about 3 and 1/3 of the 1/4 in the 5/6






20mins=1/3hr so
1/3 times what=3.4
times 3/1 both sides
what=10.2
there are 10.2 of them




1yd=36in
3/4 times 36=27in
27/3=9
9 of them




16oz=1lb
3/4 times 16=12oz
12/2=6
6 cookies

3 0
4 years ago
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