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4 years ago

Need a answer for 15. And explain (geometry) !!

Mathematics

1 answer:

madreJ [45]4 years ago

5 0

Step-by-step explanation:

If x and y are integers, then the even number is 2x and the odd number is 2y+1. The product is:

2x (2y + 1)

Distribute the x:

2 (2xy + x)

This product is a multiple of 2, so the number is even.

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The graph of the function f(x)=4/5 sqrt x is shown.<br> What is the domain of the function?

S_A_V [24]

Answer:

All real number greater than equal to zero.

Step-by-step explanation:

The function is given by

$f(x) = \frac{4}{5}\sqrt x$

The domain is defined as the input values so that the function is well defined.

here, the values of x should be all real number and zero also.

So, the correct option is (d).

5 0

3 years ago

1. NBC: A jacket you like costs $64. You have a coupon for 20% off. How much will you pay for the jacket?

Artemon [7]

Answer:

$51.2

Step-by-step explanation:

If you subtract 64 to 20% then you end up with $51.2

8 0

3 years ago

The graph of a quadratic function has a vertex at (5,3) and goes through the point (-1,-9). What is the equation of the function

kotegsom [21]

Answer:

$y=-\frac{1}{3} (x-5)^2+3$

Step-by-step explanation:

We are given the following;

Vertex of a quadratic function = (5,3)
A point where the function passes through (-1, -9)

Required to determine the equation of the function;

We need to know the vertex form of a quadratic function is;

$y=a(x-h)^2+k$ , where h and k correspond to the vertex (h,k)

Therefore, we can replace the variables h and k of the vertex in the equation;

That is;

$y=a(x-5)^2+3$

Then we use the equation and the point given to solve for a

x = -1 and y = -9

We get;

$-9=a(-1-5)^2+3\\-9 = a(36) + 3\\-9 - 3 = 36a\\-12 =36a \\a=-\frac{1}{3}$

Substituting the values of a, h and k in the equation, we get;

$y=-\frac{1}{3} (x-5)^2+3$

Thus, the equation of the function in the vertex form is $y=-\frac{1}{3} (x-5)^2+3$

8 0

3 years ago

As part of a screening process, computer chips must be operated in an oven at 125 °C. At the end of the cycle, the oven must be

Tasya [4]

I got 22.5

tell me if i got it wrong or right

3 0

4 years ago

Julio bought 12 bulbs of jumbo garlic for $11.88. How many bulbs of jumbo garlic can Anjali buy if she has $3.96?

Molodets [167]

Answer:

Anjali can buy 4 bulbs of jumbo garlic if she has $3.96.

Step-by-step explanation:

To calculate how many bulbs of jumbo garlic Anjali can buy with $3.96, we must first calculate the unit rate of the jumbo garlic. Julio buying 12 bulbs of jumbo garlic for $11.88 can be represented as:

$\frac{11.88}{12}$

Divide the fraction by $\frac{12}{12}$ to calculate the unit rate:

$\frac{.99cents}{1bulb}$

So if each bulb of garlic costs $0.99, which we can think of as being $1.00 at the moment, we could figure that Anjali's $3.96 would be closer to $4 than it is to $3, so let's multiply the unit rate by $\frac{4}{4}$ :