Mathematics College

you have 26 books.you return some books.then you take out 15 more books.now you have 27 books.how many books did you return? solve anyway​

Answers

Answer 1

Answer:

14 books were returned.

Step-by-step explanation:

You would have to first

27-15=12

26-12=14

(I hope that this helps)

Related Questions

Find the angle between the diagonal of a cube of side length 15 and the diagonal of one of its faces, so that the two diagonals have a common vertex. The angle should be measured in radians. (Hint: we may assume that the cube is in the first octant, the origin is one of its vertices, and both diagonals start at the origin.)

Answers

Answer:

the angle between the diagonal is 0.6155 RADIANS

Step-by-step explanation:

Given the data in the question

as illustrated in the image below;

O is [0,0,0]

B is [15,0,15]

E is [15,15,15]

Now to find angle BOE

vector OB = [15,0,15]

vector OE = [15,15,15]

OB.OE = [15,0,15].[15,15,15] = 15 × 15 + 15 × 15 = 450 = |OB||OE|cos[angleBOE]

|OB| = √(15² + 15²) = √(225 + 225) = √450

|OE| = √(15² + 15² + 15²) = √(225 + 225 + 225) = √675

so

Angle BOE = cos⁻¹ (  450 / ( √450 × √675 )

Angle BOE = cos⁻¹ ( 0.81649 )

Angle BOE = 35.265°

Angle BOE = 0.6155 RADIANS

Therefore, the angle between the diagonal is 0.6155 RADIANS  

helpppppppppppppppppppppppppppp

Answers

Hi the answer should be 4

Craig has 6 bags of candy that weigh pound each. Wendy has 5 bags of candy that weigh pound each.
How does Craig's amount of candy compare to Wendy's amount of candy?
yes

Answers

Craig has 1 pound of more candy than Wendy does because if each bag is one pound, and if Craig has 6 bags, and Wendy has 5, then it’ll be 6-5=1.

what is 48,000 rounded to the nearest ten thousand

Answers

50,000 because 8 is larger than 5 so you round up to 5 in the ten thousands place.

i hvae this for hw can anyone help me out rq?

Answers

Answer:

0 1 and 5

Step-by-step explanation:

Not 6 because its an open dot which means that 6 is not included

I hope this helps?

The ratio of boys to girls is 2 to 3. There are 10 boys. How many girls are in the club?

Answers

Answer:

15 girls.

Step-by-step explanation:

Hope this helps!

Answer:

15 girls

Step-by-step explanation:

2:3 ratio

If you know the amount of boys, then 2x=10, x=5

Now you know that the scale factor is 5

So, multiply 5*3 to get the amount of girls

please help PLEASE HELP!!!!!!!!!!!!!!! I AM SUPER DESPARATE I NEED MUCH MUCH MUCH HELP

Answers

Answer:

8.v = r 2 πh 3

Step-by-step explanation:

hey i need help!!!!!!​

Answers

21% 2x10+1 21=21/100 so 21%

Answer:2.10%

Step-by-step explanation:

2 is the whole number with 1/10 being also = to 10/100s

choose the inequality that represents the following graph

Answers

Answer:

its a

Step-by-step explanation:

did it on khan 2021

convert 131 57’ 32” to decimal degree

Answers

Answer:

131.95888888888888

Step-by-step explanation:

Your Welcome :)

Which ordered pair is a solution? Select all that apply
y + 3 = 4 (x - 7)
(5, 5)
(10, 9)
(8, 1)
(-1, 5)

Answers

Answer:

(10, 9) and (8, 1)

Step-by-step explanation:

you can just use substitution

I need help on these problems!! Please help

Answers

Answer:

1. 6cm

2. 14cm

3. 12cm

4. 8cm

5. 9cm

6. 5cm

Step-by-step explanation:

Hope this helps

The diagram shows a right-angled triangle.
15 cm
hcm
31
What is the value of h?
Give your answer correct to 1 decimal place.

Answers

The diagram is missing, so i have attached it.

Answer:

h = 7.7 cm

Step-by-step explanation:

From the attached image, we can see that the hypotenuse is 15 cm with the opposite side being h cm.

The angle is 31°

Thus, using trigonometric ratio, we have;

h/15 = sin 31

h = 15 sin 31

h = 15 × 0.5150

h = 7.725

Approximating to 1 decimal place gives;

h = 7.7 cm

x + 15 = 28
O A. x= 13
O B. x = 33
O C. x = 43
O D. x = 23

Answers

Answer:

A

Step-by-step explanation:

the answer is

x+15=28

x=28-15

x= 13

Answer:

A

Step-by-step explanation:

x+15=28

move 15 to the other side

and change the + to -

x=28-15

x=13

how do i graph y=1/2x+3

Answers

The Y intercept would be 3 and then the rate of change would be 1/2.
First you mark your y-Int (0,3) then from that point go up 1 then 2 to the right and you mark that point and connect the two points with a line in your graph :)

What is the domain of the function

Answers

Answer:

it will be the first one

Step-by-step explanation:

you drive a car 45 miles at spd r (mph). on return trip, spd is 3/4 r. the round trip took 1 hr 45 min. find avg speed

Answers

Answer:

the agv speed is 223

Step-by-step explanation:

Answer:

51.42 avg mph

Step-by-step explanation:

45+45 = 90 miles total for 1 3/4 hours

90/.75 = 51.42 avg mph

A florist sells a dozen roses for $22.60. She sells individual roses for the same unit cost. Write an equation to represent the relationship between the number of roses, x and the total cost of the roses, Y. How much would 18 roses cost ?

please answer asap

Answers

Answer:

The cost of the roses are $53.10

Celebration! Hope this helps ^_^

A cyclist is riding a bicycle whose wheels have a diameter of 2.1 feet. Suppose the wheels turn at a rate of 260 revolutions per minute. (a) Find the angular speed of the wheels in radians per minute. (b) Find the speed of the cyclist in feet per minute. Do not round any intermediate computations, and round your answer to the nearest whole number.

Answers

Answer:

a.1633rad/min

b.1715feet/min

Step-by-step explanation:

We are given that

Diameter of wheel, d=2.1 feet

Radius of wheel, r=[tex]\frac{d}{2}=\frac{2.1}{2}[/tex]feet

Rate=260 rev/min

a. We have to find the angular speed of the wheel in rad/min

1 rev=[tex]2\pi[/tex]radian

Where [tex]\pi=3.14[/tex]

Using the value

Angular speed=[tex]260\times 2\times 3.14/min[/tex]

Angular speed,[tex]\omega=1633rad/min[/tex]

(b)

Speed=[tex]r\omega[/tex]

Using the formula

Speed of  the cyclist=[tex]\frac{2.1}{2}\times 1633[/tex]feet/min

Speed of  the cyclist=1714.65[tex]\approx 1715[/tex]feet/min

PLEASEEE HELP
I NEED ANSWRR NOW

Answers

Answer:

B and C is your answer BH x 1/2 is formula of triangle and formula of rectangle/parallelogram is BH

1 point
7. The square below represents one whole. Express the shaded area as a
percent. (PLEASE WRITE THE PERCENT SYMBOL IN YOUR ANSWER). *

Answers

I would say 50%.

Hope I helped you!Success!

solve the equation.

log 8 + log x = 1

Answers

Answer:

[tex]x = \frac{5}{4}=1\frac{1}{4}=1.25[/tex]

Step-by-step explanation:

Hope this helps.

If K = {(x, y) Ix-y=5), is Set K a function?
1. Νο
2. Yes

Answers

Answer:

no its not

Step-by-step explanation:

How can I find the area for this shape please help!

Answers

Answer:

12cm²

Step-by-step explanation:

a=l·w

the easiest way to find the area is to break up the shapes.

the smaller shape is 1cm by 2cm

1·2= 2 cm

the larger shape is 5cm by 2cm

5·2= 10 cm

add them

2+10= 12cm

Answer:

12cm^2

Step-by-step explanation:

These are two rectangles if we divide.

So,

Area of rectangle = length × breadth

So we will name the bigger rectangle as R1 and the smaller rectangle as R2.

So,

Area of R1 = l × b

Area of R1 = 5×4

Area of R1 = 5 × (4-2)

Area of R1 = 5 × 2

Area of R1 = 10 cm^2

Area of R2 = l × b

Area of R2 = (4-2) ×1

Area of R2 = 2 × 1

Area of R2 = 2cm^2

So,

Area of complete figure = Area of R1 + Area of R2

Area of complete figure = 10 + 2

Therefore, Area of complete figure = 12cm^2

Hope it helps!!!!

there are 2918 male workers in a factory. There are 1264 fewer male than female workers. HOW MANY MALE AND FEMALE WORKERS ARE THERE IN THE FACTORY ALTOGETHER?

Answers

So you add 2,918+1,264=4,182

5. Which of the following is a pair of alternate exterior angles?
Angles 1 and 4
Angles 2 and 8
Angles 1 and 7
Angles 4 and 7

Answers

It angles 1 and 7 good luck

Answer: angle 1 and 7

Step-by-step explanation: you just do it

4. 3 mm 15 cm name the solid each net will form​

Answers

Answer:

hi

Step-by-step explanation:

Solve for w.
2w - 5 = -3
samana

Answers

Answer:

2w = -3 + 5

W = 2

Step-by-step explanation:

W=-1

Add 3 to -3 & -5
-5 becomes -2
Divide 2 into -2

HELP ITS REALLY URGENT

Answers

Answer/Step-by-step explanation:

a. m<h = x°

Two angles to use in finding x are <h and 55°

Angle pair formed: linear pair angles

b. x° + 55° = 180° (linear pair)

Subtract 55° from each side

x + 55 - 55 = 180 - 55

x = 125°

c. Given: m<n = y°

Two angles to use in solving for y are: <h and <n

Angle pair formed: alternate exterior angles

d. m<n = y° (given)

m<n = x° = 125° (as solved in 2b)

Therefore:

y = x (alternate exterior angles are congruent)

thus:

y = 125° (substitution)

Which figure shows a line segment?
K
D

Answers

Step-by-step explanation:

Option c shows line segment because it has no arrow marks

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