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Verdich [7]
3 years ago
13

20 - 10y - 7y + 9

Mathematics
2 answers:
Liula [17]3 years ago
4 0
29-3y, because 20+9, and 10y-7y :)
Maksim231197 [3]3 years ago
4 0

Suppose you want to equate an expression to zero:

\[\begin{array}{l}20 - 10y - 7y + 9 = 0\\29 - 17y = 0\\17y = 29\\y = \frac{{29}}{{17}}\end{array}\]

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Using a chart of values, graph the function f(x)=3^x
Citrus2011 [14]
Hey there!

For this problem, I would assume that you must make your own chart of values. You can do this by simply plugging in numbers like 1, 2, 3, etc... Since your graph won't be linear, you might want to do some negative numbers, as well. 

Also because your graph isn't linear, you might want to figure out or determine on your own just how far your curve will go. You can then figure out how many times you need to plug in an additional numbers for your function to then graph. 

I've attached a digital graph of this function, perhaps you can find it useful. 

Hope this helped you out! :-)

8 0
3 years ago
Read 2 more answers
Please show working out thanks
IgorLugansk [536]

Answer:

10m x 15m

Step-by-step explanation:

You are given some information.

1. The area of the garden: A₁ = 150m²

2. The area of the path: A₂ = 186m²

3. The width of the path: 3m

If the garden has width w and length l, the area of the garden is:

(1) A₁ = l * w

The area of the path is given by:

(2) A₂ = 3l + 3l + 3w + 3w + 4*3*3 = 6l + 6w + 36

Multiplying (2) with l gives:

(3) A₂l = 6l² + 6lw + 36l

Replacing l*w in (3) with A₁ from (1):

(4) A₂l = 6l² + 6A₁ + 36l

Combining:

(5) 6l² + (36 - A₂)l +6A₁ = 0

Simplifying:

(6) l² - 25l + 150 = 0

This equation can be factored:

(7) (l - 10)*(l - 15) = 0

Solving for l we get 2 solutions:

l₁ = 10, l₂ = 15

Using (1) to find w:

w₁ = 15, w₂ = 10

The two solutions are equivalent. The garden has dimensions 10m and 15m.

3 0
3 years ago
You have $1 and $5 bills in your savings envelope with a total value of $26. there are more $1 bills than $5. you would like to
marta [7]
I’m not very good at math, but maybe try adding all of them together
3 0
3 years ago
6x - 5 = -47 helpppp
BabaBlast [244]

Answer:

-7

Step-by-step explanation:

6x - 5 = -47           subtract 5 from both sides so the x is alone

6x = -42            divide by 6 so you can find what x equals

x= -7

4 0
3 years ago
Read 2 more answers
It rained 0.72 inches on Monday. On Tuesday, it rained 0.34 inches less than on Monday.
vodomira [7]

Answer:0.38 inch

Step-by-step explanation: If it rains 0.72 inch on Monday and on Tuesday it rains 0.34 less inch then, you would have to subtract them to get 0.38 inch aka answer.

8 0
3 years ago
Read 2 more answers
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