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3 years ago

draw a rectangle on the grid by plotting the points (-3, -2) (-3,3) (6,-2) and(6,3) please help this is for my packet

Mathematics

1 answer:

guapka [62]3 years ago

7 0

Just look for the coordinates left ones are along x axis and right are on y axis

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If x + y = 7 and xy = 4, then ﬁnd the value of x^2 + y^2.

Evgen [1.6K]

X+y=7
xy=4

in xy=4, divide both sides by any variable (lets say i divide it y y)
xy=4
x=4/y
Now substitute it to the 1st equation
x+y=7
4/y+y=7
Multiply both sides by y
4+y^2=7y
Change to standard form
y^2-7y=4
Use the square of something...
y^2-7y+49/4=4+49/4
(y+7/2)^2=65/4
Squareroot both sides
y+7/2=posinega(sqrt of 65)/2
y=(sqrt of 65)/2-7/2
or y=-(sqrt of 65)/2-7/2

6 0

3 years ago

Read 2 more answers

There are 30 chairs in the band room mr avery wants to have the same number of chairs in each row there must be more than 1 row

kari74 [83]

Answer:

(Rows, chairs)= (2,15), (3,10), (5,6)

Step-by-step explanation:

Given: There are 30 chairs in the band room.

Criteria: There has to be same number of chairs in each row. There must be more than one row and the number of chairs in each row must also be greater than the number of rows.

First finding the divisor of 30:

1,2,3,5,6,10,15,30

Now, we need to look into divisor which qualify the criteria in the multiple of rows and number of chairs.

∴ 30= $2\times 15$

30= $3\times 10$

30= $5\times 6$

∴ Mr Avery can use either of these option to arrange rows and chairs.

(Rows, chairs)= (2,15), (3,10), (5,6)

6 0

3 years ago

LEAST TO GREATEST PLSSS

Cerrena [4.2K]

Answer:

-0.8, 7/9, √3

Step-by-step explanation:

5 0

3 years ago

The human resource department at a certain company wants to conduct a survey regarding worker benefits. The department has an al

dezoksy [38]

Answer:

Step-by-step explanation:

Hello!

A systematic sample is a sampling type where, the population units are listed in a certain order, the first unit is randomly chosen from the first k number of units and then the subsequent units are selected in intervals of k. To calculate k, in case you know the population size, you have to divide the population size by the sample size (usually established based on previous information. Remember k is always a whole number.

a) k= pob/n= 4247/40= 106.175 ≅ 106

b) From the 106 individuals you have to randomly select the first unit. Then starting from it the next 39 individuals surveyed will be the +k

Using a random number calculator I've chosen the first individual to be surveyed as number 57 after that you have to add k= 106 to know wich are the next individuals to be sampled:

1) 57 11) 1117 21) 2177 31) 3237

2) 57 + 106= 163 12) 1223 22) 2283 32) 3343

3) 269 13) 1329 23) 2389 33) 3449

4) 375 14) 1435 24) 2495 34) 3555

5) 481 15) 1541 25) 2601 35) 3661

6) 587 16) 1647 26) 2707 36) 3767

7) 693 17) 1753 27) 2813 37) 3873

8) 799 18) 1859 28) 2919 38) 3979

9) 905 19) 1965 29) 3025 39) 4085

10) 1011 20) 2071 30) 3131 40) 4191

I hope it helps!

3 0

3 years ago

684303 rounded to nearest thousand

horsena [70]

684,000. This should give you the correct answer as the 4 is the thousands place. Good luck :D

3 0

3 years ago