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Flura [38]
2 years ago
15

write a systems of equation where one equation has a slope of 2 and goes through the point 0, 2 and the second equation is paral

lel to the first and has a y-intercept of 3.​
Mathematics
2 answers:
mezya [45]2 years ago
6 0

Answer:

y=2x+2

y=2x+3

Step-by-step explanation:

AleksandrR [38]2 years ago
5 0

Answer:

go up the hill and roll down then you willf igure it out

Step-by-step explanation:

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A tank contains 300 liters of fluid in which 40 grams of salt is dissolved. Brine containing 1 gram of salt per liter is then pu
bonufazy [111]

Answer:

A(t) = 300 -260e^(-t/50)

Step-by-step explanation:

The rate of change of A(t) is ...

A'(t) = 6 -6/300·A(t)

Rewriting, we have ...

A'(t) +(1/50)A(t) = 6

This has solution ...

A(t) = p + qe^-(t/50)

We need to find the values of p and q. Using the differential equation, we ahve ...

A'(t) = -q/50e^-(t/50) = 6 - (p +qe^-(t/50))/50

0 = 6 -p/50

p = 300

From the initial condition, ...

A(0) = 300 +q = 40

q = -260

So, the complete solution is ...

A(t) = 300 -260e^(-t/50)

___

The salt in the tank increases in exponentially decaying fashion from 40 grams to 300 grams with a time constant of 50 minutes.

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3 years ago
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Answer:

9. is 3

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Step-by-step explanation:

use rise/run to find the slope of the graph

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10 times 100 fhg[';g;8utfdkibjlif
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HELP ME WHAT THE ANSERW Lisa has a scholarship for all four years she attends collage what is the total amount of the scholarshi
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12,000 × .75= 9,000 then multiply by 4. Your total is 36,000
8 0
3 years ago
Please help<br> its really important
DENIUS [597]
See the attached image for the answers in figure 2 and figure 3. Figure 1 will be used to generate figure 2 and figure 3.

--------------------------------------------

Use the given table to compute the row and column totals. We simply add up values to get these totals. 

Boys: 108+23 = 131 meaning that there are 131 boys total so this value will go in row 1 of the "total" column attached to the right side of the given table. See figure 1.

Girls: 99+16 = 115 will go right under 131. 

Right-Handed: 108+99 = 207 will go under 99 in the "right handed" column in the "total" row.

Left-handed: 23+16 = 39 will go next to the 207 in the same total row as before

--------------------------------------------
We have the row and column totals computed. Now onto the next step.

Copy the entire table (with row and column totals) to another sheet of paper or just below the table you just wrote out. This new second table will be built upon and altered. First, erase the bottom "total" row. Now divide everything in row 1 by the total
108/131 = 0.82442748091603 which rounds to 0.82
23/131 = 0.17557251908397 which rounds to 0.18

So we'll have 0.82 and 0.18 fill in for the first row of the "Boys" row. See figure 2.

Do the same for the second row. Divide everything in this row by the total 115
99/115 = 0.8608695652174 which rounds to 0.86
16/115 = 0.1391304347826 which rounds to 0.14

The values 0.86 and 0.14 will go in the first two columns of row 2.

The totals will divide by each other to lead to 1
131/131 = 1
115/115 = 1
which explains why we have two '1's in the very right column. They represent 100%

Again, see figure 2 to see how the values are placed.
--------------------------------------------

We'll follow similar steps as before in the previous section. Copy the table from figure 1 but now erase the entire right-hand column marked "total". 

Divide everything in column 1 by the total 207
108/207 = 0.52173913043479 which rounds to 0.52
99/207 = 0.47826086956521 which rounds to 0.48
207/207 = 1

Divide everything in column 2 by the total 39
23/39 = 0.58974358974359 which rounds to 0.59
16/39 = 0.41025641025641 which rounds to 0.41
39/39 = 1

See figure 3 to see how the values are filled in. The values in red are the results we got in this section. The '1's have already been filled in by your teacher.
--------------------------------------------

Side Note: In figure 2, the red values in the "Boys" row add up to 1
0.82+0.18 = 1
The same can be said for the "girls" row too
0.86+0.14 = 1

In figure 3, the red values in the "right handed column" add to 1
0.52+0.48 = 1
And similarly for the "left-handed" column
0.59+0.41 = 1

These four facts are not coincidences. For instance, 82% of the boys are right-handed so that leaves 18% left-handed boys (see row1 of figure 2). So 82% + 18% = 100% which is represented by 0.82+0.18 = 1

7 0
2 years ago
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