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Eduardwww [97]
3 years ago
5

Simplify: 20(1/5x - 3/4)+9x

Mathematics
2 answers:
Goryan [66]3 years ago
7 0

Simplified answer is: 13x - 15

Scilla [17]3 years ago
5 0

13x−15 thats your answer

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The expanded form of the whole number 470,052 is
Contact [7]
The answer would be 400,000; 70,000; 50; 2.
Hope this helps!
5 0
3 years ago
What’s the common denominator for 3/7 and 1/2? Sorry but I don’t know
shepuryov [24]

Answer:

14

Step-by-step explanation:

7 0
3 years ago
Find the quadratic function y=​f(x) whose graph has a vertex ​(−3​,4​) and passes through the point ​(−7​,0). Write the function
olganol [36]

Answer:

Step-by-step explanation:

This is a parabola since a quadratic is a parabola.  The standard form for a parabola is y = ax² + bx + c

but before we do that, we will use the vertex form, since it will make our work easier at the beginning.  

First and foremost, when we plot the vertex and the given point, the vertex is higher up than is the point; that means that this parabola opens upside down, and its vertex form will be

y=-|a|(x - h)² + k

The absolute value is out in front of the a, so we know that the value of a is positive, but the quadratic itself is negative (upside down) and we will find that math takes care of that negative that needs to be out front.  So we need to solve for a by filling in the x, y, h, and k values from the point and the vertex:  x = -7, y = 0, h = -3, k = 4

0 = a(-7 - (-3))² + 4 and

0 = a(-7 + 3)² + 4 and

0 = a(-4)² + 4 and

0 = a(16) + 4 and

0 = 16a + 4 and

-4 = 16a so

a=-\frac{1}{4}

Now that we know a, we can plug it back into the vertex form and then put it into standard form from there.

y=-\frac{1}{4}(x+3)^2+4

Now we will FOIL out what's inside the parenthesis to get

y=-\frac{1}{4}(x^2+6x+9)+4

Simplify by distributing the -1/4 into the parenthesis:

y=-\frac{1}{4}x^2-\frac{3}{2}x-\frac{9}{4}+4

Combine like terms to get

y=-\frac{1}{4}x^2-\frac{3}{2}x+\frac{7}{4}

And there you go!

5 0
3 years ago
Mason currently pas $420 per month in rent. the contract on his apartment sates that his rent will increase by 6% next year.
mel-nik [20]

Answer:

a. $25.20

b. $445.20

Step-by-step explanation:

$420*(6%/100%) = $25.20

$420+$25.20 = $445.20

8 0
3 years ago
Read 2 more answers
joe is using his allowance money to download songs from the internet. he can download them at a rate of eight songs every 10 min
Mama L [17]

Joe: 8 songs in 10 minutes = 8/10 = 0.8 songs per minute

Jasmine: 12 songs in 15 minutes = 12/15 = 0.8 songs per minute

 they are downloading at the same speed

7 0
3 years ago
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