Marie donated 40% of her comic books to a school. If se donated 14p comic books how may did she own before her donation

Answer: 76

Step-by-step explanation:

47+3= 50

19+7=26

50+26=76

Where's the Bar Diagram?

Hope this Helps!

Answer:

[tex]x^2+y^2=36100000[/tex]

Step-by-step explanation:

Here it is mentioned that the there are two concentric circles this means that they have the same center.

The center of the circles are the origin [tex](0,0)[/tex].

Radius of the outer circle is

[tex]r=\dfrac{3800}{2}=1900\ \text{m}[/tex]

Equation of a circle

[tex](x-a)^2+(y-a)^2=r^2[/tex]

where

[tex]a\ \text{and}\ b\ \text{are the}\ x\ \text{and}\ y\ \text{coordinates of the center}[/tex]

[tex]r=\text{Radius of the circle}[/tex]

Here the equation will be

[tex](x-0)^2+(y-0)^2=1900^2\\\Rightarrow x^2+y^2=3610000[/tex]

The equation of the outer circle is [tex]x^2+y^2=3610000[/tex]

Answer:

10 teachers= 120 students

Step-by-step explanation:

2 teachers= 24 students

divide 24 and 2 which 12

1 teacher= 12 students

multiply 10 and 12 which equals to 120

10 teachers= 120 students.

Pls mark as brainliest, thank u.

Answer:

Irrational Number

Step-by-step explanation:

Given

[tex]Number = 1.56432..[/tex]

Required

Determine which set of number it is

The given number is not a natural number, whole number and it is not an integer because it contains decimal point

The given number is not rational because it can not be expressed as a fraction of two whole numbers.

Hence:

The set of the number is irrational

Answer:

y=-2x+b

-2=-8+b

6=b

y=-2x+6

so

2x+y=6

Answer:

a) 24

b) f^-1 = [tex]\sqrt{x+1}[/tex]

c) 3

Step-by-step explanation:

Just plug the numbers in for x:

(5)^2 -1 = 24

Switch x and y then solve for y and replace y with f^-1(x):

x = y^2 -1

sqrt(x +1) = y = f^-1(x)

Now plug in 8:

f^-1(x) = sqrt(8 +1)  = 3

Answer:7x+28

Step-by-step explanation:

Answer:

7x + 28

Step-by-step explanation:

Line up the columns just like with standard addition.  Keep the x numbers in the same columns and keep the integers in their columns.  It will look like this:

               3x     +     15

PLUS       4x     +     13

              ----------------------

                7x     +     28

Answer:

my life hurts now

Step-by-step explanation:

Answer:

42

Step-by-step explanation:

GET A BOOK U MORON

Answer:

107/56 miles further on Sunday

Step-by-step explanation:

biked 139/8  saturday

biked 135/7  sunday

which fraction is greater by finding a common denominato 107/56r

Least common Denominator of 7 and 8 is 56

139x 7/8 x 7= 973/56

135x8/7 x  8=1080/56

1080/56 - 973/56 = 107/56

Therefore he rode further on Sunday further by 107/56 miles

5. total time taken = 3hrs

    speed = 30km/hr

total distance travelled = 30 * 3= 90km

6. total time taken = 1.5hrs = 1  1/2 hrs

   speed = 70 miles/hr

  distance travelled in 1/2 hrs = 1/2 * 70 = 35 miles

total distance travelled = 3/2 * 70 = 3 * 35 = 105 miles

Rest of the answer jen will help

Hope it helped u,

pls put thanks and mark as the brainliest

Answer:

24 feet wide

Step-by-step explanation:

72/18 = 4

80/20 = 4

88/22 = 4

Since there is one common answer between all sizes, you can make a ratio to help or you can use inverse operations.

Inverse operations is easier, so you would divide 96 by 4, and that will equal 24.

Answer:

2/3

Step-by-step explanation:

Answer:

2/3

Step-by-step explanation:

formula: y2-y1/x2-x1

-4-0/3-9=

-4/-6=

2/3

Answer:

The dollar amount taken off is $10.

Step-by-step explanation:

I hope i helped.

Answer:

18+7=7+18

Step-by-step explanation:

Answer:

3 hours

Step-by-step explanation:

285+55+285+55+285+55=1020

or another way

285+55×3= 1020

Answer:

I included the graph for you, hope this helps!

Step-by-step explanation:

Answer: 3.25

Step-by-step explanation: What I did was Multiply 42.25 by 100 ( To make it easier) and then divide it by 13. After that, I divided the quotient by 100 to get the real answer, which was 3.25

Let me know if I was helpful or not!

The two pairs ∠AEG and ∠CEG, ∠AEF and ∠FED are complementary angles. Therefore, option B is the correct answer.

From the given figure we need to identify the complementary angles.

In geometry, complementary angles are defined as two angles whose sum is 90 degrees.

By complementary angles concept:

From the figure, ∠AEG+∠CEG=90°

∠AEF+∠FED=90°

The two pairs ∠AEG and ∠CEG, ∠AEF and ∠FED are complementary angles. Therefore, option B is the correct answer.

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Answer:

47

Step-by-step explanation:

Simplify the following:

-26 + 6 - -67

Hint: | Multiply -1 and -67 together.

-(-67) = 67:

-26 + 6 + 67

Hint: | Evaluate 6 + 67 using long addition.

| 1 |  

| 6 | 7

+ | | 6

| 7 | 3:

73 - 26

Hint: | Subtract 26 from 73.

| 6 | 13

| 7 | 3

- | 2 | 6

| 4 | 7:

Answer: 47

Answer:

A. 1 in. = 22.5 mi

Step-by-step explanation:

Since 22.5 x 10 = 225, we can conclude that this will fit the scale needed. B. is incorrect because it is simply illogical in context with a scale and the question. C. is incorrect since 10 x 0.04 is 0.4, which does not equal 10. D. is incorrect since we need the scale to add up to equal 225 mi, not 22.5.

Hope this helps!

Answer:

[tex]pg\int\limits^7_7(10-y)2\sqrt{7^2-y^2} \, dy[/tex]

*The last bound is negative 7

Then it equals 15085928 or 1.5E7

Step-by-step explanation:

[tex]x^2+y^2=7^2[/tex]

area = 2xdy

depth = (7+3)-y -> (10-y)

total force = [tex]pg\int\limits^7_7 {(10-y)2x} \, dy[/tex]

Substitute 2x from the first equation as x=[tex]\sqrt{7^2-y^2}[/tex]

total force = [tex]pg\int\limits^7_7 {(10-y)2\sqrt{49-y^2} } \, dy[/tex]

=pg1539.38

=(1,000)(9.8)(1539.38)=1.5E7 N

*Lower bound is -7, can't get the program to allow me to put it as a negative

The hydrostatic force against one side of the plate is an integral 1.5E7 N.

The general equation of a circle is [tex](x-h)^{2} +(y-k)^{2} = r^{2}[/tex]. The coordinate is (0, 0) at the origin, so the equation will become [tex](x)^{2} +(y)^{2} = r^{2}[/tex].

[tex](x)^{2} +(y)^{2} = 7^{2}[/tex]

area of circular plate = 2xdy

depth = (7+3)-y =  (10-y)

The total force = [tex]pg\int\limits^7_7[ {10-y} ]2xdy[/tex]

Substitute 2x from the first equation as x = [tex]\sqrt{7^{2} -y^{2} }[/tex][tex]pg\int\limits^7_7[ {10-y} ]\sqrt{49 -y^{2} }dy[/tex]            

= pg 1539.38

= (1,000)(9.8)(1539.38)

= 1.5E7 N

Thus, The hydrostatic force against one side of the plate is an integral 1.5E7 N.

Learn more about total force;

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Answer:

3 (if you're supposed to add them)

Step-by-step explanation:

7+5=12

12+(-3)=9

9+(-6)=3

Answer:

I believe the answer is 3

Explanation:

5+(-3)+7+(-6) = 3

Hope this Helps!

Answer:

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Answer:

The coordinates of the point B’ is (2,6)

Step-by-step explanation:

Let us have a case of rotation for 270 counterclockwise first;

So if we had;

(x,y) and we rotate 270 degrees about the origin, we will have (y , -x)

This is the case of the origin.

In cases where we are not rotating around the origin, say a point (a,b)

The result of the rotation will be;

(x,y) Turning to (y - b + a , a - x + b)

In the case of this question;

x = -2, y = 4

a = 1 , b = 3

Substituting these into the rotation equation, we have;

(4-3 + 1 , 1-(-2) + 3)

= (2 , 6)

So the coordinates of the point B’ is (2,6)

Answer:

8x²- x -8

Step-by-step explanation:

The question is not well written. I guess what you mean is:

Subtract -2x^2+4x-1 ( minus 2x squared plus 4x minus 1) from 6x^2+3x-9 (6x squared plus 3x minus 9).

To  subtract -2x^2+4x-1 from 6x^2+3x-9, that is

6x^2+3x-9 - (-2x^2+4x-1). This can be written as

6x²+3x-9 - (-2x²+4x-1)

Now, opening the bracket, we will get

6x²+3x-9 +2x²-4x+1

Then, collecting like terms, we get

6x²+2x²+3x-4x-9+1

6x²+2x² = 8x²

3x-4x = -x

-9+1 = -8

∴6x²+2x²+3x-4x-9+1 becomes

8x²-x -8

The answer is 8x²-x -8.

Simplified form of the polynomial :

8x²- x -8

Given(correct form of question):

Subtract -2x²+4x-1 ( minus 2x squared plus 4x minus 1) from 6x²+3x-9 (6x squared plus 3x minus 9).

Now,

To  subtract -2x²+4x-1 from 6x²+3x-9, that is

6x²+3x-9 - (-2x²+4x-1). This can be written as

6x²+3x-9 - (-2x²+4x-1)

Now, opening the bracket, we will get

6x²+3x-9 +2x²-4x+1

Then, collecting like terms, we get

6x²+2x²+3x-4x-9+1

6x²+2x² = 8x²

3x-4x = -x

-9+1 = -8

∴6x²+2x²+3x-4x-9+1 becomes 8x²-x -8

Thus,

The answer is 8x²-x -8.

Learn more about polynomials,

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Answer:

Step-by-step explanation:

23 - 5 = 18 Years Old

Hope this helps! <3

Answer:

18 yeara old

Step-by-step explanation:

let Bob's age be 'x'

5 more than Bob's age means

5+x ...is 23

Therefore, 5+x=23

x= 23-5

18

Bob is 18 years old.

Hope it helped.

the answer is k=4.6. hope this helps

Answer:

Edna = 56.5

Elsa = 57.5

Step-by-step explanation:

Represent Edna age with x; Elsa age will be x + 1

So,

[tex]x + x + 1 = 114[/tex]

[tex]2x + 1 = 114[/tex]

Make 2x the subject

[tex]2x = 114 - 1[/tex]

[tex]2x = 113[/tex]

Solve for x

[tex]x = 113/2[/tex]

[tex]x = 56.5[/tex]

Elsa age is calculated as thus;

[tex]Elsa = x + 1[/tex]

[tex]Elsa = 56.5 + 1[/tex]

[tex]Elsa = 57.5[/tex]

Answer:

2.8

Step-by-step explanation:

since 4/5 equals .8 it would just be 0.8 + 2

Answer:

14/5 i think it,s the answer

Step-by-step explanation: