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Bad White [126]
2 years ago
15

Solve graphically this linear system of equations

0%7By%2B1%3D0%7D%7D%20%5Cright." id="TexFormula1" title="\left \{ {{x=3} \atop {y+1=0}} \right." alt="\left \{ {{x=3} \atop {y+1=0}} \right." align="absmiddle" class="latex-formula">
Mathematics
1 answer:
RSB [31]2 years ago
5 0

Answer:

(3,-1)

Step-by-step explanation:

The given equations are :

x = 3 ..(1)

y+1 = 0 ....(2)

We need to solve the equations graphically. x = 3 means draw a line parallel to y axis.

For y+1=0

y = -1

Draw a line parallel to the negative x axis. The attached figure shows the graph for the given equations. The solution is (3,-1).

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One piece of wood has a rectangular bottom that is 30 cm long and 56 mm wide. The block is said to weigh 80 N. Calculate the pre
PilotLPTM [1.2K]

Answer:

4762 N/m^2

Step-by-step explanation:

Find area.

30x5.6=168

Convert to m^2

168cm^2=0.0168m^2

Use pressure formula to get answer

P=F/A

P=80/0.0168

P=4762 N/m^2

8 0
3 years ago
Plz help ASAP..........................
goldfiish [28.3K]

Answer:

2(13a-5)

Step-by-step explanation:

4 0
3 years ago
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Find the equation of the line with slope −2 which goes through the point (9,−7).
goldenfox [79]

Answer:

Here,

slope (m)=-2

y- intercept (c)=-7

Now,

The equation of the line;

or,y=mx+c

or,y= -2x-7

or,2x+y+7=0 is the required equation....

6 0
2 years ago
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There are 40 students in a class.
Anvisha [2.4K]

Step-by-step explanation:

Total no. of students = 40

Total no. of girls = 22

Total no. of boys = 40 - 22 = 18

No. of girls walking to school = 9

No. of girls who cycle to school = 22 - 9

No. of boys who cycle to school = 7

No. of students who take the bus = 10

(6 boys and 4 girls)

No. of boys who walk to school = 18 - (7 + 6) = 5

Total no. of students who walk to school = 9 + 5 = 14

5 0
3 years ago
A sweater originally priced at $80 was marked down by 25%. What was the sale price of the sweater?
crimeas [40]
The original price of the sweater is $80 which is 100% of the price.
If the price is reduced by 25%, then the new price is 75% of the original price since 100% - 25% = 75%.
Now we need to find 75% of $80.

To find a percent of a number, multiply the percent by the number.
To convert a percent into a decimal, divide the percent by 100 which is the same as moving the decimal point two places to the left.

Here's how to change 75% into a decimal.
75% = 75/100 = 0.75

Here's how you calculate 75% of $80.
75% of $80 =

= 75% * 80

= 0.75 * $80

= $60

Answer: The sale price is $60.
6 0
3 years ago
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