Alfie has £10 note He buys 3 pens costing 1.45 each and some pencils costing 90p He gets 2.05 change. How many pencils did he buy?

Answer:

Quantum mechanics is a fundamental theory in physics that provides a description of the physical properties of nature at the scale of atoms and subatomic particles.[2]:1.1 It is the foundation of all quantum physics including quantum chemistry, quantum field theory, quantum technology, and quantum information science.

Answer:

I am somewhat the same way I only like sour

Step-by-step explanation:

Answer:

   All men are mortal. Joe is a man. Therefore Joe is mortal. If the first two statements are true, then the conclusion must be true.[2]

   Bachelors are unmarried men. Bill is unmarried. Therefore, Bill is a bachelor.[3]

   To get a Bachelor’s degree at Utah Sate University, a student must have 120 credits. Sally has more than 130 credits. Therefore, Sally has a bachelor’s degree.

Two rectangles. Left: General Principle. Right: Special Case. An arrow pointing left to right above them is labeled "deductive reasoning." An arrow pointing right to left below them is labeled "inductive reasoning."

Step-by-step explanation:

Answer:

[tex]x \approx 24\degree [/tex]

Step-by-step explanation:

In triangle BAC, by Pythagoras theorem:

[tex]AC^2 = BC^2 -BA^2 [/tex]

[tex]AC^2 = (15)^2 -(9)^2 [/tex]

[tex]AC^2 = 225 - 81[/tex]

[tex]AC^2 = 144[/tex]

[tex]AC = \sqrt {144} [/tex]

[tex]AC = 12\: cm [/tex]

In triangle ABD,

[tex] \tan \angle ABD =\frac{AD}{AB} [/tex]

[tex] \tan \angle ABD =\frac{5}{9} [/tex]

[tex] \angle ABD =\tan^{-1}\frac{5}{9} [/tex]

[tex] \angle ABD =29.054604099\degree [/tex]

[tex] \angle ABD =29.05\degree [/tex]

Next, in triangle ABC, by sine rule:

[tex] \frac{\sin \angle ABC}{AC}=\frac{\sin \angle BAC}{BC}[/tex]

[tex] \frac{\sin (\angle ABD+\angle DBC) }{12}=\frac{\sin 90\degree}{15}[/tex]

[tex] \frac{\sin (29.05\degree+x) }{12}=\frac{1}{15}[/tex]

[tex] \sin (29.05\degree+x) =\frac{12}{15}[/tex]

[tex]29.05\degree+x = \sin^{-1}\frac{12}{15}[/tex]

[tex]29.05\degree+x =53.130102354\degree [/tex]

[tex]29.05\degree+x =53.13\degree [/tex]

[tex]x =53.13\degree- 29.05\degree[/tex]

[tex]x =24.08\degree [/tex]

[tex]x \approx 24\degree [/tex]

Answer:

11

Step-by-step explanation:

I'm guessing you meant decreasing and 4 less than 11 is 7

I am a little confused on what you meant, and I'm not sure if its correct. I think he saved $20

Answer:

sorry I am very sorry to say your question is incomplete. best of luck

Answer:

12 members do both hurdles and long jumps.

Answer:

Numbers are 29 and 34

Step-by-step explanation:

Let x = one number

let y = second number

x + y = 63

x - y = 5

substitution method, x = 5 + y

5 + y + y = 63

2y + 5 = 63

2y = 58

y = 29

Find value of x:  x - 29 = 5

x = 34

Answer:

9

Step-by-step explanation:

11 - 2 = 9

Answer:

5) x = 12 6) y = 3.5

Step-by-step explanation:

For number 6 that one may be right I tried several ways and kept getting that answer

5. is completely write though

Hope that helps

Answer:

Question 5: x = 12, Question 6: y = 2[tex]\sqrt{3}[/tex]

Step-by-step explanation:

Use the Pythagorean Theorem to calculate missing sides.

Question 5 explanation: [tex]x^{2} + 9^2 = 15^2[/tex]n:  ⇒ [tex]x^{2} + 81 = 225[/tex] ⇒ [tex]x^{2} = 144[/tex] ⇒ [tex]x=12[/tex]

Question 5 explanation: [tex]y^{2}+6^2 =(4\sqrt{3})^2[/tex] ⇒ [tex]y^{2} + 36 = 48[/tex] ⇒ [tex]y^2 = 12[/tex] ⇒ [tex]y=2\sqrt{3}[/tex]

Answer:

4

Step-by-step explanation:

because the first number has 2 decimal places and the second 2. So, 2+2=4

Answer:

ksoslsmskksisosjzjsoslsndhsislsmndjddu

Step-by-step explanation:

yapamadım

Answer:

the answer is c

Step-by-step explanation:

The relationship between the lengths of the sides of the triangle is as follows: r² =  t² - s².

A right triangle is defined as a triangle in which one angle is a right angle or two sides are perpendicular.

The right triangle is given in the question, as shown

As per the given figure, the right triangle has

The hypotenuse = t

Let, perpendicular = r and base = s

According to Pythagoras's theorem,

In a right-angled triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides.

So, perpendicular²+base²=hypotenuse²

⇒ r² + s² =  t²

This can be rewritten as

⇒ r² =  t² - s²

Hence, the correct answer would be an option (A).

Learn more about the right triangle here:

brainly.com/question/6322314

#SPJ2

Answer:

x=50 degrees

Step-by-step explanation:

180+x-90=3x-10

simplify

180+x-x-90+10=3x-x-10+10

2x=100

x=50

Answer:

540

Step-by-step explanation:

(n-2) 180

(5 -2) 180

3 x 180

540

Answer:

546

Step-by-step explanation:

Lateral SA = (2l + 2w)·h

= [2(10.5) + 2(2.5)] · 21

= (21 + 5) ·21

= 26(21)

= 546

Answer:

7.54 i think??

Step-by-step explanation:

Answer:

we have a rule

(x-h)²+(y-v)²=r²

while h is the x intercept

v is y intercept

r is the radius

so the answer will be

x²+y²=400

or

x²+y²=20²

Answer:

1056 inches

Step-by-step explanation:

Given that :

Initial measurement = 2358 in

Guage level after 5 days of rain (final reading) = 3414 in

Change in water level rise :

Final reading - Initial reading

(3414 - 2358) in

= 1056 inches

Answer:

y=25x+4

Step-by-step explanation:

Answer:

[tex]-20gh+12g\\=4g(-5h+3)\\\\ \\4g(-5h+3)[/tex]

Answer:

14.25 decimal para saken

Answer:

19

Step-by-step explanation:

Answer:

El valor de a es 19

Step-by-step explanation:

Espero te sirva

Answer:

6

Step-by-step explanation:

Answer:

C=10

Step-by-step explanation:

6^2+8^2=100

the square root of 100 is 10.

Answer:

X=(Y*2) // Y=(X/2)

Step-by-step explanation:

Xylophones = "X"

Yodelers = "Y"

First Equation: X=(Y*2) essentially just explains that the xylophones is equal to the yodelers times 2

Second Equation: Basically the same thing, but rather than multiplying the yodelers by two, it divides the xylophones in half.