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Leni [432]
3 years ago
12

a. So far, she has collected 432 signatures. This is 36% of the number of signatures she needs. How many signatures does Sarita

need to collect?
Mathematics
1 answer:
erma4kov [3.2K]3 years ago
8 0

Answer:

1200 signatures are needed

Step-by-step explanation:

t = total number of signatures

t * 36% = 432

Change to decimal form

.36t = 432

Divide each side  by .36

.36t/.36 = 432/.36

t =1200

1200 signatures are needed

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Given h of x equals negative 2 times the square root of x minus 3 end root, which of the following statements describes h(x)?
MrMuchimi

Answer:

The function h(x) is decreasing on the interval (3, ∞).

Step-by-step explanation:

Please take a look at the attached image.

You will see a graph of the given function h(x) = -2\sqrt{x-3}. The function is decreasing.

The function starts at 3 and starts to go towards negative infinity on the x-axis. Therefore the function is decreasing on the interval (3, ∞).

3 0
2 years ago
You have been averaging 55 sales per day. Per our new policy, everyone needs to increase his or her sales per day by 10% in the
Mariulka [41]
To find your new number of sales per month, you will need to find the number of sales you have per month (based on 30 days per month).  

55 x 20 = 1650 sales.

Than, you will need to calculate what 10% of this is and add it to your original sales number.

0.1 (10%) x 1650 = 165

1650 + 165 = 1815

You will need approximately 1815 sales based on the 30 day month.
8 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
At the sewing store ashly bought a bag of mixed buttons she got 25 buttons in all 5 of the buttons were large what percentage of
iren [92.7K]

Answer:

20%

Step-by-step explanation:

You have to do 5/25, giving you 20%.

8 0
3 years ago
Read 2 more answers
Simplify the problem given.
maks197457 [2]
Step Number 1. is to Simplify \frac{4}{8}  to  \frac{1}{2}

Step Number 2. <span>Simplify so you get </span>\frac{x}{4} +  \frac{5}{3}

Done! :)
4 0
3 years ago
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