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kkurt [141]
2 years ago
10

Explain how to decide whether to use graphing, substitution, or elimination to solve a system of equations.

Mathematics
1 answer:
Bess [88]2 years ago
4 0
It depends on the systems of equations. I would stay away from elimination, go for substitution and graph only if asked.
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I’m confuse plz help
Ad libitum [116K]

Answer:

As in an equilateral triangle all sides are equal so 9+3x = 5x-5

9+3x = 5x-5

9+5 = 5x-3x

14 = 2x

14/2 = x

7= x

So,As we know that x is 15 so we can substitute the values 9+3x or 5x-5

9+3x

=9+3*7

=30

So, one side of the triangle = 30

Perimeter of an equilateral triangle = 3*side

=3*30 = 90

So, perimeter of the equilateral triangle = 90

6 0
3 years ago
Katrina drinks 0.5 gallons of water per say. Which expression shows how to find the number of cups of water she drinks in a week
skad [1K]
<h2>Answer:</h2><h2>0.5 gallons per day.</h2><h2>Two options only.</h2><h2>First;How many liter does the gallon have use the litre to solve for how many litres.Convert it into one unit divide and multiply the product by 0.5.</h2>

<h2>2nd option; Find the number of cups by representing it in a variable. </h2>

6 0
3 years ago
Y=-6x^2+100x-180
Hunter-Best [27]
In the figure we have the graphic of this equation. So, the vertex is the maximum of this function. This point means that the maximum <span>daily profit from soccer balls is:

</span>y = 236.67
<span>
And this happens when the </span><span>selling price of each soccer ball is:

</span>x = 8.33
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So if you want to get the best daily profit, this is the price you must sell each soccer ball.</span>

4 0
3 years ago
Read 2 more answers
Roscoe rides his bike at least 10 miles but not more than 30 miles. He rides at an average rate of 10.5 miles per hour. The amou
zheka24 [161]

Actually, the domain is the possible set of input values of a function that will make the function fit the specific criteria. In this case, the input value is m, where m is the number of miles that is travelled. The criteria is to travel at least 10 miles but not more than 30 miles, therefore the domain should be:

 

All real numbers from 10 to 30, inclusive

 

(should be real numbers not integer since any fractional number is included in the domain)

 

I cannot figure out why the choices are far from the answer.

3 0
3 years ago
A bee flies at 20 feet per second directly to a flower bed from its hive. The bee stays at the flower bed for 15 minutes, and th
oee [108]

Answer:

a. Speed of flight * ( total spent away from hive - time stayed on flower bed)

b. The flower bed is 2,400 ft from the hive

Step-by-step explanation:

a. Mathematically, the distance will be ;

the speed * time taken

Given that he stays a total of 17 minutes away from the hive and he stayed 15 minutes in the flower bed, the time it used on the flower bed will be 17 minutes - 15 minutes = 2 minutes

So the distance from the flower bed to the hive is;

Speed of flight * ( total spent away from hive - time stayed on flower bed)

b. We want to find the distance of the flower bed from the hive

That will be;

20 ft per second * 2 minutes (120 seconds)

= 20 * 120 = 2,400 ft

4 0
3 years ago
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