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Talja [164]
3 years ago
8

Can someone please help me with these two questions? I would be really grateful...

Mathematics
1 answer:
Roman55 [17]3 years ago
6 0

Answer:

1. County B

2. (I'm going to keep working on an answer for this one).

Step-by-step explanation:

A. 25 ppl × 100 sq miles = 2500

100 ppl × 40 sq miles (25 kilometers square) = 4000

County B

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How would I solve y=5x-2 & -14x+y=16 in a substitution equation
Aleks04 [339]
You would substitute the given value of “y” into the equation of -14x+y=16
-14x+5x-2=16

Then you would solve for “x”
x=2

You would then substitute the value of “x” into the equation to solve for “y”
y=5(2)-2

Which would then give you a value for “y”
y=12
So the answer is (2,12)

7 0
3 years ago
Find the coordinates of the vertex of the following parabola algebraically. Write your answer as an (x,y)(x,y) point.
Serga [27]

Answer:

(8,-3)

Step-by-step explanation:

The given parabola is

y =  - 3 {x}^{2}  + 48x  - 195

We factor -3 from the first two terms to get:

y =  - 3( {x}^{2}   - 16x)  - 195

Add and subtract the square of half the coefficient of x

y =  - 3( {x}^{2}   - 16x + 64)   + 3 \times 64- 195

y =  - 3 {(x - 8)}^{2}  + 192 - 195

We simplify to get:

y =  - 3 {(x - 8)}^{2}  - 3

We compare this to y=a(x-h)²+k,

The vertex is (h,k)=(8,-3)

3 0
3 years ago
What is the coefficient ​
d1i1m1o1n [39]

Answer:

coefficient of what?

Step-by-step explanation:

7 0
3 years ago
There are seven roads that lead to the top of a hill. How many different ways are there to reach the top and come back ( you don
Setler [38]

Answer:

49 different ways

Step-by-step explanation:

If there are seven roads that lead to the top, you have seven possible choices to go to the top of the hill.

Then, to come back to the start, you also have seven possible choices (seven roads), and you can pick any road.

So, if you have seven ways to go up and seven ways to go down, the number of different ways of going to the top and coming back is the product of these numbers of possible choices.

N(total) = N(up) * N(down)

N(total) = 7 * 7

N(total) = 49 different ways

Brainliest pls and tysm!

8 0
2 years ago
Write an equation to match the fraction model shown in the reference image and solve the problem.
Pani-rosa [81]

Answer:

8/100 + 8/100 + 32/100 = 48/100

48/100 / 4/4 = 12/25

Step-by-step explanation:

6 0
2 years ago
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