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3 years ago

14

Belinda walks 10 minutes on the first day and plans to increase the number of minutes by 2 minutes each day.How many will Belind

a walks after a week

1 answer:

Korolek [52]3 years ago

8 0

Answer:

24 minutes

Step-by-step explanation:

This can be explained with the equation y=2x+10 (I chose 2 arbritrary variables, any are acceptable). A week is equivalent to 7 days so x=10. Plug this into the equation and you end up with 24, because 2(7)+10=24

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Which interval for the graphed function contains the local

Greeley [361]

Answer:

2-[1, 2]

Step-by-step explanation:

From the graph, we can conclude the following things:

1. The graph is of degree 4 as it intersects the x axis at 4 points.

2. The graph tends to infinity for increasing the value of 'x' along positive or negative x-axis.

3. The graph has 3 turning points between the intervals [-1, 0], [1, 2] and [2, 3]

4. Local maximum: The top of mountain of the graph represents local maximum. So, during the interval [1, 2], there is a local maximum.

5. Local minimum: The lowest point or the valley of the graph represents local minimum.

So, during the intervals [-1, 0] and [2, 3], there are local minimums.

Thus, there is only one local maximum during the interval [1, 2].

4 0

2 years ago

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Helppppppppppppppppppp the is en science

Bogdan [553]

Answer: This isnt a Answer but u should of put it under bilogy beacause this is math

Step-by-step explanation:

7 0

3 years ago

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What is the solution of the system? Use elimination.

sweet [91]

Answer:

The solutions to the system of the equations by the elimination method will be:

$x=2,\:z=-1,\:y=2$

Step-by-step explanation:

Given the system of the equations

$2x\:+\:2y\:+z\:=\:7$

$-x-\:y\:+z\:=\:-5$

$x+3y-4z=12$

solving the system of the equations by the elimination method

$\begin{bmatrix}2x+2y+z=7\\ -x-y+z=-5\\ x+3y-4z=12\end{bmatrix}$

$\mathrm{Multiply\:}-x-y+z=-5\mathrm{\:by\:}2\:\mathrm{:}\:\quad \:-2x-2y+2z=-10$

$\begin{bmatrix}2x+2y+z=7\\ -2x-2y+2z=-10\\ x+3y-4z=12\end{bmatrix}$

$-2x-2y+2z=-10$

$+$

$\underline{2x+2y+z=7}$

$3z=-3$

$\begin{bmatrix}2x+2y+z=7\\ 3z=-3\\ x+3y-4z=12\end{bmatrix}$

$2x+6y-8z=24$

$-$

$\underline{2x+2y+z=7}$

$4y-9z=17$

$\begin{bmatrix}2x+2y+z=7\\ 3z=-3\\ 4y-9z=17\end{bmatrix}$

Rearranging the equations

$\begin{bmatrix}2x+2y+z=7\\ 4y-9z=17\\ 3z=-3\end{bmatrix}$

solve $3z=-3$ for z:

$z=-1$

$\mathrm{For\:}4y-9z=17\mathrm{\:plug\:in\:}z=-1$

solve $4y-9\left(-1\right)=17$ for y:

$4y-9\left(-1\right)=17$

$4y+9=17$

$4y=8$

$y=2$

$\mathrm{For\:}2x+2y+z=7\mathrm{\:plug\:in\:}z=-1,\:y=2$

solve $2x+2\cdot \:2-1=7$ for x:

$2x+2\cdot \:2-1=7$

$2x+3=7$

$2x=4$

$x=2$

Therefore, the solutions to the system of the equations by the elimination method will be:

$x=2,\:z=-1,\:y=2$

5 0

2 years ago

Pls help with the matching

Ronch [10]

12-y=9
3x-y=21
4y-10=2
1/4xy=6

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3 years ago

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Simple true and false question

Nesterboy [21]

Answer:

true

Step-by-step explanation:

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2 years ago

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