Please help i don't know
A textbook store sold a combined total of 312 history and sociology textbooks in a week. The number of sociology textbooks sold was 52 less than the number of history textbooks sold. How many textbooks of each type were sold?

number of history textbooks sold:
number of sociology textbooks sold:

Answer:

pizza                 kids

3                          7

6                         14

12                        28

24                       56

48                       112

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

:)

Answer:

Figure 3: 28.5 units²

Figure 4: 33 units²

Figure 5: 25 units²

Figure 6: 30 units²

Figure 7: 25 units²

Figure 8: 32 units²

Reasons:

Figure 3 consists of 2 shapes, A rectangle and a square

                  ████████                                           ◣

rectangle: ████████            triangle:               █◣

                   ████████                                          ██◣

rectangle:

to calculate a rectangle's area: multiply the lengths of the width and height:

████████= width  8           █

                                                █    =height 3

                                                █

[tex]area=w(h)[/tex]

now substitute the values of W and H:

[tex]8(3)=24[/tex]

rectangle area = 24

Triangle:

to find the area of a triangle, multiply the width and height and divide by two:

◣ + ◣ = █         0.5 + 0.5 = 1

                                                █    

███=width   3                         █ =height  3

                                                █    

[tex]area=\frac{w(h)}{2}[/tex]

now substitute W and H

[tex]area=\frac{3(3)}{2}[/tex]

[tex]area\frac{9}{2}[/tex]

Triangle area: 4.5

Now add the Rectangle Area To the triangle Area:

4.5 + 24 = 28.5

Final answer:

AREA =2 8.5

hope this helps!

Answer:

x = 4, x = 8

Step-by-step explanation:

(9)

Given 2 secants from an external point to the circle, then

The product of the external part and the whole of one secant is equal to the product of the external part and the whole of the other secant, that is

x(x + 6) = 5(5 + 3)

x² + 6x = 5 × 8 = 40 ( subtract 40 from both sides )

x² + 6x - 40 = 0 ← in standard form

(x + 10)(x - 4) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 10 = 0 ⇒ x = - 10

x - 4 = 0 ⇒ x = 4

x > 0 then x = 4

(11)

Given a secant and a tangent from an external point to the circle, then

The square of the tangent is equal to the product of the external part and the whole of the secant, that is

x(x + 10) = 12²

x² + 10x = 144 ( subtract 144 from both sides )

x² + 10x - 144 = 0 ← in standard form

(x + 18)(x - 8) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 18 = 0 ⇒ x = - 18

x - 8 = 0 ⇒ x = 8

x > 0 then x = 8

Answer:

f(12) = 9

x = 0 when f(x) = 5

Step-by-step explanation:

Answer:

Euler's formula for polyhedron is:

As per the above formula the relationship between the vertexes, edges and faces is same for any polyhedron.

Lets confirm, have a look at the picture

(a) Tetrahedron, count each element:

Verify

(b) Hexagonal prism, count each element:

Verify

Answer:

5 groups

2 extra children

Step-by-step explanation:

The computation of a number of groups and number of extra children is shown below:

Given that

There is 27 children

And, this group would be divided into group 5

So,

As we know that 25 is easily divided by 5

So there are 5 groups

And, the extra children is

= 27 - 25

= 2 chidren

Answer:

100%

Step-by-step explanation:

53+47=100

Answer:

50

Step-by-step explanation:

the step

100% * 10 =10 as 100% = 1

then mulitply 10 *5 = 50

Answer:

2116x2 + 3355 + 146

Step-by-step explanation:

Hope this helped <3

Answer:

4 = 12

Here is your answer.

Answer:

1x4=4

2x4=8

3x4=12

4x4=16

5x4=20

Answer:

6

Step-by-step explanation:

72/24=3

3*2=6

Answer:

the answers -6

Step-by-step explanation:

Answer:

21

Step-by-step explanation:

3+(5+4)(8-6)

3+(9)(2)

3+18=21

Answer:

The answer is 21

Step-by-step explanation:

3+(a+4)(8-b)

3+(5+4)(8-6)

3+9x2

3+18

21

Hope this helps

Answer:

Step-by-step explanation:

1.5 , 3 , 4.5 , 6  ............

This is an arithmetic sequence. Each term is obtained by adding 1.5 to the previous term.

First term = 1.5

Common difference = second term - first term

                                 = 3 - 1.5 = 1.5

Check:

Second term = 1.5 + 15 = 3

Third term = 3 + 1.5 = 4.5

Fourth term = 4.5 + 1.5 = 6

because it wont make scenes when its already 180

Answer:

-1/2M + 110

Step-by-step explanation:

The slope of the line if the scale is right should be -1/2M as it goes down half the speed. The y intercept is 110.

01921

Step-by-step explanation:

Answer:

7c^2

Step-by-step explanation:

I hope this helps have a great day

Answer:

x = (y - 14) / 2

Step-by-step explanation:

2x + 14 = y

2x = y - 14

x = (y-14)/2

Answer:

5x+8

Step-by-step explanation:

Answer:

SSS Triangle Congruence.

Answer:$2.65

Step-by-step explanation: enjoy

Answer:

#8)  x = 12

Step-by-step explanation:

vertical angles are congruent

5x + 10 = 70

5x = 60

x = 12

Answer:

4:Pause

Step-by-step explanation:

Before starting the reading of each paragraph you should pause as it does not create misunderstanding between the people also each and every paragraph should be clear to everyone so the chances of doubt would be minimum

Therefore according to the given options the fourth option is correct

Hello!

The answer is pause.

All the other options are nouns, but it's clear that we need a verb.

So, the answer is pause.

Hope it helps! :)

Do ask me if you have any query.

~An excited gal

[tex]MagicalNature[/tex]

Answer:

$311.42

Step-by-step explanation:

assuming he would have $0.00 dollars left over after the checks. add the checks together then add the deposits together then subtract.

767.03 - 455.61 = 311.42

Answer:

87

Step-by-step explanation:

done but not sure though