If tneir are 22 students how many packs packs of eight pemcils do we need to buy

last one is the answer:D. X=12 and X=1

step by step:

d=b2-4ac=169-48=121

x1=(-b+√d)2a=(13+11)2=12

x2=(-b-√d)2a=(13-11)/2=1

X1=12 and X2=1

please give me brainlest❤️

Answer:

ABCD is a curve, made up by line segments. AB=2cm, BC=4cm, CD=3cm.

Can AD be:

1) 1cm

2) 4cm

3) 10cm

Step-by-step explanation:

3

Answer:

64

Step-by-step explanation:

Answer:

64

Step-by-step explanation:

I've never explained multiplication but here we go:

Multiplication is literally repeated addition

So 16*4 would just be 16+16+16+16 which we can do the addition out and get 64

We can also do 4 sixteen times and do 4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4

If we add that up, we'll get 64

We can also do distributive property, so we do 4^15 which is 60 and then we do 4*1 which equals 4, then we do 60+4 to get 64. The equation will look like this:

4(15+1)

You can always just use a calculator but you don't learn from doing that

You can also do it how they teach it to you in school which looks like this

2

16                                                                                                                          x4                                                                                                                             ----                                                                                                                        64

Let me know if you have any questions

Answer:

3:43.13

Step-by-step explanation:

Answer:

XZ = 36 cm, BC = 12 cm

Step-by-step explanation:

Since the triangles are similar then the ratios of corresponding sides are equal, that is

[tex]\frac{XZ}{AC}[/tex] = [tex]\frac{XY}{AB}[/tex] , substitute values

[tex]\frac{XZ}{9}[/tex] = [tex]\frac{16}{4}[/tex] = 4 ( multiply both sides by 9 )

XZ = 36 cm

and

[tex]\frac{BC}{YZ}[/tex] = [tex]\frac{AB}{XY}[/tex]

[tex]\frac{BC}{48}[/tex] = [tex]\frac{4}{16}[/tex] ( cross- multiply )

16BC = 192 ( divide both sides by 16 )

BC = 12 cm

Answer:

kjnksafnkjd

Step-by-step explanation:

fkja jknfknla

Answer: 1.21426567 • 10^-6

or 1/823543

Step-by-step explanation:

Answer:

4x+10=90.

Step-by-step explanation:

The angle EVD forms a right angle. right angles are equal to 90. if the angle is 90 and is shown by the equation 4x+10 then 4x+10=90

Answer: m = 14

Step-by-step explanation:

3m-2n=12

3 + 11 = 14m.

14m - 2n = 12.

m=11.

Answer: 2/3n +4

Step-by-step explanation:

Explanation in the photo :)

Answer:

Rs240 000

Step-by-step explanation:

Let the length and breadth of the rectangular field be represented by l and b respectively.

Thus,

l = 3b ............. 1

Perimeter of a rectangle = 2(l + b)

The perimeter of the given rectangle = 800 m, so that;

800 = 2(l + b)

l + b = [tex]\frac{800}{2}[/tex]

       = 400

l + b = 400 ............... 2

But, l = 3b. So that,

3b + b = 400

4b = 400

b = [tex]\frac{400}{4}[/tex]

   = 100

b = 100 m

l = 3b

 = 3 x 100

l = 300

The length of the rectangular field is 300 m, while its breadth is 100 m.

Area of the rectangular field = l x b

                        = 300 x 100

                        = 30 000

Area of the rectangular field is 30 000 [tex]m^{2}[/tex].

Cost of digging the ground at the rate of Rs8 per [tex]m^{2}[/tex] = Rs8 x 30 000

                                            = Rs240 000

Answer:

d = 101

Step-by-step explanation:

t = 11

11 x 11 = 121

-20 + 121 = 101

check: 101- 121 = -20 (correct)

Answer:

a possible equation could be 8f = 104

Step-by-step explanation:

8 is the price of each ticket

f is the amount of friends

104 is the total

Answer:

(-2,4) , (0,5) , (2,6) , (4,7)

Step-by-step explanation:

you just substitute every value of x in the equation and you get y

The remaining values of the table are 4,  5, 6, 7.

Expression is a finite combination of symbols that is well-formed according to rules that depend on the context.

We have,

[tex]Y=\frac{X}{2} +5[/tex]

And,

The table is given,

X | -4, -2, 0, 2, 4

Y |  3,   ?,  ?, ?, ?

Now,

To complete the table,

Put the given values of X in the given expression,

Now,

For, X = -2,

[tex]Y=\frac{X}{2} +5=\frac{-2}{2} +5=-1+5[/tex]

Y = 4,

Now,

For, X = -0,

[tex]Y=\frac{X}{2} +5=\frac{0}{2} +5=0+5[/tex]

Y = 5,

Now,

For, X = 2,

[tex]Y=\frac{X}{2} +5=\frac{2}{2} +5=1+5[/tex]

Y = 6,

Now,

For, X = 4,

[tex]Y=\frac{X}{2} +5=\frac{4}{2} +5=2+5[/tex]

Y = 7,

So, the complete table is ,

X | -4, -2, 0, 2, 4

Y |  3,  4,  5, 6, 7

Hence, we can say that the remaining values of the table are 4,  5, 6, 7.

To know more about expression click here

https://brainly.com/question/14083225

#SPJ2

Answer:

it will be b

Step-by-step explanation:

Answer:

2/25

Step-by-step explanation:

You're welcome :)

Answer:

C

Step-by-step explanation:

The line goes right 2 up 3 so the slope must be 3/2. You can track the point (-3,-2) on the line in the graph.

Answer:

A

Step-by-step explanation:

The Y intercept is positive 2 and your slope would be 3. y2-y1/x2-x1

Answer:

A

Step-by-step explanation:

A is equal to 5d-5

I just went through all eh choices

It can’t be b or c becuase when distributed, it automatically is -5d+25 or vice versa with a different sign so their out

D is impossible becuase you can’t jsut flip a subtraction problem

And A is possible because adding a negative basically means subtracting so if flipped The signs have to change

Answer:

18 miles per hour

Step-by-step explanation:

Answer:

5x+2

Step-by-step explanation:

Answer:

5x + 6

Step-by-step explanation:

Answer:the second one Bit equuls -3

Step-by-step explanation:

negitive x negitive = positive -5x-3=15

Answer:

Step-by-step explanation:

Simplifying

5(4x + p) = w

Reorder the terms:

5(p + 4x) = w

(p * 5 + 4x * 5) = w

(5p + 20x) = w

Solving

5p + 20x = w

Solving for variable 'p'.

Move all terms containing p to the left, all other terms to the right.

Add '-20x' to each side of the equation.

5p + 20x + -20x = w + -20x

Combine like terms: 20x + -20x = 0

5p + 0 = w + -20x

5p = w + -20x

Divide each side by '5'.

p = 0.2w + -4x

Simplifying

p = 0.2w + -4x

Answer:

The 1st and the 3rd one

Step-by-step explanation:

2.3+(-2.3) ➡ 2.3 -2.3 = 0 ,so this option is correct

-3.7+(-4.1) ➡ -3.7 - 4.1 = -7.8 so this option isn't correct

-2.6-(-12/4) ➡-2.6 + 3 = 0.4 this option is also correct

(5/2)+(-2.5) ➡ 5/2 -5/2 = 0 this  would be undefined because we can't divide 0 by 2 or any other rational numbers

E.72-(-100) ➡72+100= 172  this option is incorrect because 172 is positive

Answer:

i looked it up and got 180/1 sorry if its not right

Step-by-step explanation:

Answer:180

Step-by-step explanation:

To divide by the fraction, multiply by the reciprocal of that fraction.

36 times 5 =180

180

Answer:

79-22=8h

Step-by-step explanation:

She can earn the rest by babysitting for only 8 hours,

so take 22 from 79, divide the total by 8 and that is how much she gets per hour (8h)

Answer:

79.5 = 22.35 + 8

I got it correct with with answer.

Answer:

It's 398

Step-by-step explanation.

Diameter of 8.

height of 12.

8 - .75 - .75= 6.5

6.5/2 = 3.25

3.25 x 3.25 x 12 x 3.14 = 397.995

round to the nearest whole number and you get

398

Take the diameter (8) an subtract is by both sides of the walls (0.75 each wall) that gives you 6.5. Take that 6.5 and half that, because you need to have the radius to solve volume problems, giving you 3.25.  Then multiply 3.25 by 3.25 together ( I know it seems redundant but it just works easier this way) This gives you 10.5625. After that take 10.5625 then multiply it into 12, being the height, which gives you 126.75. Finally take 126.75 and multiply that into 3.14 (pie) giving you the answer.

The approximate inside volume of the pipe is 398 cubic inches.

We must use the Volume formula for a right Cylinder to calculate the approximate Inside Volume of the pipe, which is described below:

[tex]V = \pi \cdot (r-t)^{2}\cdot h[/tex] (1)

Where:

[tex]V[/tex] - Inside volume, in cubic inches.

[tex]r[/tex] - Radius of the iron pipe, in inches.

[tex]t[/tex] - Wall thickness of the iron pipe, in inches.

[tex]h[/tex] - Height of the cylinder, in inches.

If we know that [tex]r = 4\,in[/tex], [tex]t = 0.75\,in[/tex] and [tex]h = 12\,in[/tex], then the approximate inside volume of the pipe:

[tex]V = \pi\cdot (4\,in-0.75\,in)^{2}\cdot (12\,in)[/tex]

[tex]V \approx 398.197\,in^{3}[/tex]

The approximate inside volume of the pipe is 398 cubic inches.

Please see this question related to the Volume of Cylinders: https://brainly.com/question/15891031

Answer:

See Below.

Step-by-step explanation:

In the given figure, AP = BP = PC.

And we want to prove that ∠ABC is a right angle.

Since AP = BP and BP = PC, we can create two isosceles triangles: ΔAPB and ΔCPB.

By the definition of isosceles triangles, in ΔAPB, ∠PAB and ∠PBA are equivalent. Let the measure of each of them be x°.

Likewise, in ΔCPB, ∠PCB and ∠PBC are equivalent.

And since AP = BP = PC, each of the angles∠PCB and ∠PBC will also be equivalent to x°.

And since the sum of the interior angles of a triangle total 180°, we acquire:

[tex]\angle PAB+\angle PBA+\angle PCB+\angle PBC=180[/tex]

Since they are all equivalent:

[tex]4x=180[/tex]

Hence:

[tex]x=45^\circ[/tex]

∠ABC is the sum of ∠PBA and ∠PBC, each of which measures 45°. Hence:

[tex]\angle ABC=\angle PBA+\angle PBC=45+45=90^\circ[/tex]

Answer:

this is your answer look it once.