-3<=5x+2<=12 can someone answer this please

Answer:

by using substuton method

2x=22-y

x=22-y/2                     equation (i)

so substuting the value x in x-y=5

22-y/2-y=5

22-y-2y/2=5

22-3y=10

22-10/3=y

12/3=y

4=y

now substitute the value of y in equation (i)

x=22-y/2

=22-4/2

=18/2

=9

therefore ,the value of x is 9 and y is 4

Step-by-step explanation:

Answer:

A) 51 [tex]m^2[/tex]

Step-by-step explanation:

Answer:

9.81

Step-by-step explanation:

Answer:

y^2

Step-by-step explanation:

you just subtract 3 from 5

Answer:

20

Step-by-step explanation:

To find the perimeter of a shape, you have to add all the sides together. Since this is a square, this means that all the sides are the same. If one side is 5, that means that all the other sides are 5 as well. So you will have to do 5+5+5+5 or 5 x 4.

Answer:

Step-by-step explanation:

Answer:

22

Step-by-step explanation:

21.962962963

Estimated: 22

Hope it helps plz give brainliest! :D

Answer:

1. 180

2. 52

3. 288

Step-by-step explanation:

The area of a rectangle can be found by multiplying the length by the width, so the area of the rectangle is 15 * 12 = 180. The area of a triangle can be found by multiplying the base by the height and divide by 2, so the area of the triangle is [tex]13*\frac{8}{2} = 13 * 4 = 52[/tex]. The area of a parallelogram can be found by multiplying the length and the height, so the area of the parallelogram is 24 * 12 = 288.

Answer:

It should be 384^2

Step-by-step explanation:

Answer:

384 unit^2

Step-by-step explanation:

SA = 2(lw + wh + hl)

     = 2(8x8 + 8x8 + 8x8)

     = 2(64 + 64 + 64)

     = 2(192)

     = 384

Hope it helps!

Answer:

i belive the answer is 3/14

Step-by-step explanation:

I could be wrong

Answer:

4/14 or 2/7

Step-by-step explanation:

there are 3 red pens, 4 blue, and 7 black

add those numbers to get the total (14 pens) then take the blue pens (4) to make the fraction 4/14 (4 blue out of 14 pens total). Then simplify the fraction.

Answer:

[tex]c = \sqrt{146} \\ x = 48°[/tex]

Answer:

17.6 laps

Step-by-step explanation:

Total distance to be covered = 2 miles

distance coved in each lap = 400 yards

We know that 1 mile = 1760 yards

therefore, 4 miles will make = 4×1760

= 7040 yards.

Number of laps to be taken

= Total distance to be covered ÷ distance coved in each lap

= 7040/400 = 17.6 laps

Therefore, it would take 17.6 laps to cover a distance of 4 miles if lap were 400 yards.

Answer:

6 times 10^3

Step-by-step explanation:

You multiply 3 and 2 together and 10^7 and 10^-4 together. 3x2 is equal to 6 and 10^7 times 10^-4 is the same as 10^7-4 which is equal to 10^3. Therefore, the answer is 6 times 10^3.

If this has helped please mark as brainliest

Answer:

the awnser i c

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Answer:

Step-by-step explanation:

The meaning of the slope of the line of best fit for the graph of the data is that for each month the balance in the Saving account is increasing at a constant rate.

A slope also known as the gradient of a line is a number that helps to know both the direction and the steepness of the line.

The meaning of the slope of the line of best fit for the graph of the data is that for each month the balance in the Saving account is increasing at a constant rate.

Learn more about Slope of Line:

https://brainly.com/question/14511992

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Answer:

d should be correct

Step-by-step explanation:

Answer: -9

Step-by-step explanation:

Given

The sum of a number and two is equal to negative 7

Suppose x is that number

[tex]\therefore x+2=-7\\\text{add -2 both sides}\\\Rightarrow x+2-2=-7-2\\\Rightarrow x=-9[/tex]

So, the number is [tex]-9[/tex].

Answer:

Probability[First marble blue, second is green without replacement] = 1/12

Step-by-step explanation:

Given:

Number of green marble = 3

Number of red marble = 4

Number of blue marble = 2

Total marble = 9 marble

Find:

Probability[First marble blue, second is green without replacement]

Computation:

Probability of an event = Number of favorable outcome / Number of total outcome

Probability[First marble blue] = 2 / 9

Probability[second is green] = 3 / [9-1]

Probability[second is green] = 3 / 8

Probability[First marble blue, second is green without replacement] = Probability[First marble blue] x Probability[second is green]

Probability[First marble blue, second is green without replacement] = [2/9][3/8]

Probability[First marble blue, second is green without replacement] = 6 / 72

Probability[First marble blue, second is green without replacement] = 1/12

Complete question is in comment section :

Answer:

68%

Step-by-step explanation:

Mean = 25

Standard deviation = 5

The percentage of trees between 20 and 30

20 trees = 1 standard deviation below the mean ; mean - 1(standard deviation)

25 - 5 = 20

30 trees = 1 standard deviation above the mean ;

Mean + 1(standard deviation) ;

25 + 5 = 30

This means, 20 and 30 lies ±1 standard deviation from the mean which according to the empirical rule is 68%

According to the empirical rule :

Answer:

(18x845h)(6)n

=1085hnx84

Answer: 1/8

Step-by-step explanation:

4 equal sections

2 coin possibilities

1/4 times 1/2 = 1/8

so 1/8 chance of spinning c and flipping heads

Answer:

-7

Step-by-step explanation:

Given data

Tina's problem is

-16 - (-9)

Firstly let her open up the bracket

Note - * -= +

-16+9

Secondly, Rearrange

9-16= -7

Hence the answer is -7

Answer:

Empty Set: The empty set (or null set) is a set that has no members. Notation: The symbol ∅ is used to represent the empty set, { }.

Step-by-step explanation:

plss do me brainlest

Answer: 15 units

Step-by-step explanation:

Given

The endpoints of the line segment are [tex](-7,10)\ \text{and}\ (-6,-5)[/tex]

The length of the line segment is given by the distance formula i.e.  

[tex]d=\sqrt{\left( x_2-x_1\right)^2+\left( y_2-y_1\right)^2}[/tex]

Insert the values,

[tex]\Rightarrow d=\sqrt{\left( -6+7\right)^2+\left( -5-10\right)^2}\\\Rightarrow d=\sqrt{1^2+\left( -15\right)^2}\\\Rightarrow d=\sqrt{1+225}\\\Rightarrow d=15.0\ \text{units}[/tex]

Therefore, the length of line segment TU is 15 units