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3 years ago

Serena's average speed during her training run was 8 kilometers per hour over the 2 hours that she ran What was the total

Mathematics

1 answer:

Elena-2011 [213]3 years ago

8 0

Answer:

Step-by-step explanation:

8x2=16

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according to the synthetic division of below which of the following statements are true check all that apply

Romashka-Z-Leto [24]

Eeessscsssdfhjdfgghh

4 0

2 years ago

The yearly cost in dollars, y, at a video game arcade based on total game tokens purchased, x, is y = x + 60 for a member and y

horsena [70]

Answer:

The graph of a nonmember’s yearly cost will be steeper, but start lower than the graph of a member’s yearly cost.

Step-by-step explanation:

sample response edge 1020

5 0

2 years ago

Is my answer correct? 10 points + brainleist!

Liono4ka [1.6K]

Answer:

your answer is incorrect. The correct answer is $h=-13$ and $k=13$ .

Step-by-step explanation:

If a quadratic function is $f(x)=ax^2+bx+c$ and a>0, then minimum value of the function at point $\left(-\dfrac{b}{2a},f(-\dfrac{b}{2a})\right)$ .

The given function is

$f(x)=x^2+bx+182$

Here, a=1, b=b and c=182. So.

$-\dfrac{b}{2a}=-\dfrac{b}{2(1)}=-\dfrac{b}{2}$

Put $x=-\dfrac{b}{2}$ in the given function to find the minimum value of the function.

$f(-\dfrac{b}{2})=(-\dfrac{b}{2})^2+b(-\dfrac{b}{2})+182$

We know that minimum value is 13. So,

$13=\dfrac{b^2}{4}-\dfrac{b^2}{2}+182$

$13-182=-\dfrac{b^2}{4}$

$-169=-\dfrac{b^2}{4}$

$169\times 4=b^2$

Taking square root on both sides.

$13\times 2=b$

$b=26$

The value of b is 26.

So, the given function is

$f(x)=x^2+26x+182$

Now, add and subtract square of half of coefficient of x.

$f(x)=x^2+26x+182+(13)^2-(13)^2$

$f(x)=(x^2+2(13)x+(13)^2)+182-169$

$f(x)=(x+13)^2+13$

On comparing with $f(x)=(x-h)^2+k$ , we get

$h=-13$

$k=13$

Therefore, your answer is incorrect.

8 0

2 years ago

In a mixture of concrete, there are fourfour lb of cement mix for each pound of gravel. If the mixture contains a total of 2952

Anton [14]

Answer: there are 59059 lbs of gravel.

Step-by-step explanation:

In a mixture of concrete, there are four lbs of cement mix for each pound of gravel. This means that eight lbs of cement would be mixed for 2 pounds of gravel and 12 lbs of cement would be mixed for 3 pounds of gravel and 12. Therefore, the constant ratio of cement to gravel is 4:1

The total ratio is 4 + 1 = 5

If the mixture contains a total of 295295 lb of these two ingredients, then the number of pounds of gravel that are there is

1/5 × 295295 = 59059 lbs

3 0

2 years ago

If the graph of a line goes from the upper left corner of the graph to the lower right corner, what can you say about its slope?

musickatia [10]

Answer:

I believe the answer is D. Hope this helps

Step-by-step explanation:

4 0

2 years ago