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Marizza181 [45]

4 years ago

13

I have no idea what to do

1 answer:

tekilochka [14]4 years ago

8 0

Answer: Y=-5x+30

Step-by-step explanation:

First, you have to find the slope of graph so you find the rise over run Y/X. Since the X values are being measured by 1’s, and the Y values are being measure by 5’s, your slope would be -5 (not 5 as the graph line is decreasing therefore it is negative). To find b, you find the Y intercept of the graph (where Y is when X=0) and in this case, the y intercept is 30. So the equation that describes what is occurring in the graph is Y=-5x+30 as a linear equation is written as Y=mx+b. You can check If the equation is correct by substituting the x and y values of a specific coordinate point on the graph. For example: 25= -5(1)+30. This gives you 25=25 so the equation is correct.

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Are the two parabolas defined below similar or congruent or both? Justify your reasoning. Parabola 1: The parabola with a focus

Dominik [7]

Answer:

They are similar by a factor of 14

Step-by-step explanation:

From the general equation of a parabola opening up (since the directrix is on the y axis and the focus is upwards this line) the focus coordinates are:

$Focus = (h,k+p) = (0,2)$

So h=0 and k+p=2, for the directrix:

$y = k-p=-4$

solving k and p from the two equations above:

$k=-1 and p=3$

So for Parabola 1 the equation would be:

$x^{2} =4*3(y+1)$

For Parabola 2 the general equation is:

$x^{2} =4*(3/2)(y)$

here h=0, k=0, p=3/2 so focus is (0,3/2), directix is y=-3/2, they have the same orientation.

they are not congruent. For them to be similar it must comply:

$x_{1}=k x_{2}\\y_{1}=ky_{2} => (1/12)x_{1} ^{2} -1 = k(1/6)x_{2} ^{2}$

replacing $x_{1}$ and solving for k:

$(1/12)(kx_{2}) ^{2} -1 = k(1/6)x_{2} ^{2}\\ (1/12)k^{2} x_{2}^{2}-1 = k(1/6)x_{2} ^{2}\\k-12 = (12/6)=2\\k = 2+12=14\\$

They are similar by a factor of 14

8 0

3 years ago

Chocolate sprinkles cost as much per pound as sugar. Find 1/10 the baker's total cost for 100 pounds of chocolate sprinkles. Exp

Burka [1]

The total cost of chocolate sprinkles is $800

<h3>Place value charts</h3>

This is an implementation of the numeral system that shows the value of each digit in a number using their positions

From the complete question, we have the following parameters:

Unit rate = $8.00
Total pounds = 100

<h3>Total cost of chocolate sprinkles</h3>

So, the total cost of chocolate sprinkles is calculated using the following formula

$Unit = \frac{Total}{Pounds}$

This gives

$\$8.00= \frac{Total}{100}$

Multiply both sides of the equations by 100

$Total = \$8.00 \times 100$

$Total = \$800$

Hence, the total cost of chocolate sprinkles is $800

Read more about place value charts at:

brainly.com/question/12386995

3 0

2 years ago

Every 9 out of 12 were chosen

katrin2010 [14]

I don’t understand your question

7 0

3 years ago

Need help with a math question

Soloha48 [4]

Answer:

72%

Step-by-step explanation:

You are looking at graduate students. There are 2610 of them.

Of those graduates 1879 have financial aid.

So the probability of a graduate student having financial aid is 1879/2610.

Inserting this division into my calculator provides me with about 72%.

4 0

3 years ago

Congruent polygons and how to find the measure of numbered angles

dimulka [17.4K]

See the number that it says

8 0

3 years ago