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3 years ago

Which of the following demonstrates the commutative property across multiplication for 2× 10 × 7

Mathematics

2 answers:

Phoenix [80]3 years ago

5 0

Its A. Kelp dont you dare.

Darina [25.2K]3 years ago

5 0

Hey there, commutative property is when you mix up the numbers but you will still the same answer. 2*10*7=140. 10*7*2=140. Therefore, the answer would be A. 10*7*2

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Bo is flying a kite, holding his hands a distance of 3.5 feet above the ground and

morpeh [17]

The height of the kite will be 53.32 feet above the ground.

<h3>What is trigonometry?</h3>

The branch of mathematics sets up a relationship between the sides and the angles of the right-angle triangle is termed trigonometry.

Given that:-

The boy is flying a kite, holding his hands a distance of 3.5 feet above the ground and
letting all the kite's strings play out. He measures the angle of elevation from his hand to the kite to be 29°. If the string from the kite to his hand is 110 feet long, what is the total vertical height?

The height of the kite above the ground will be calculated as:-

$Sin\theta = \dfrac{perpendicular}{Hypotenuse}$

$Sin(29)=\dfrac{H}{110}$

H = Sin(29) x 110

H = 53.32 feet

The hand of the boy is 3.5 above the ground so the total height H(t) of the kite above the ground will be:-

H(t) = 53.232 + 3.5

H(t) = 56.28 feet.

Therefore the height of the kite will be 53.32 feet above the ground.

To know more about Trigonometry follow

brainly.com/question/24349828

#SPJ1

8 0

2 years ago

Can you please help me do my math homework I am struggling its due for tomorrow morning

Lyrx [107]

Answer:

Actual pressure = 36.5.

Step-by-step explanation:

x + 0.08x

= 1.08x

1.08x = 39.42

x = 39.42/ 1.08

= 36.5

5 0

3 years ago

Given that 'n' is a natural number. Prove that the equation below is true using mathematical induction.

LenaWriter [7]

<h3>To ProvE :- </h3>

1 + 3 + 5 + ..... + (2n - 1) = n²

Method :-

If P(n) is a statement such that ,

P(n) is true for n = 1
P(n) is true for n = k + 1 , when it's true for n = k ( k is a natural number ) , then the statement is true for all natural numbers .

$\sf\to \textsf{ Let P(n) : 1 + 3 + 5 + $\dots$ +(2n-1) = n$^{\sf 2}$ }$

Step 1 : Put n = 1 :-

$\sf\longrightarrow LHS = \boxed{\sf 1 } \\$

$\sf\longrightarrow RHS = n^2 = 1^2 = \boxed{\sf 1 }$

Step 2 : Assume that P(n) is true for n = k :-

$\sf\longrightarrow 1 + 3 + 5 + \dots + (2k - 1 ) = k^2$

Add (2k +1) to both sides .

$\sf\longrightarrow 1 + 3+5+\dots+(2k-1)+(2k+1)=k^2+(2k+1)$

RHS is in the form of ( a + b)² = a²+b²+2ab .

$\sf\longrightarrow 1 + 3+5+\dots+(2k-1)+(2k+1)= (k +1)^2$

Adding and subtracting 1 to LHS .

$\sf\longrightarrow 1 + 3+5+\dots+(2k-1)+(2k+1) + 1 -1 = (k +1)^2 \\$

$\sf\longrightarrow 1 + 3+5+\dots+(2k-1)+(2k+2) - 1 = (k +1)^2$

Take out 2 as common .

$\sf\longrightarrow 1 + 3+5+\dots+(2k-1)+\{2(k+1)-1\}= (k +1)^2$

P(n) is true for n = k + 1 .

Hence by the principal of Mathematical Induction we can say that P(n) is true for all natural numbers 'n' .

**Edits are welcomed**

8 0

2 years ago

Read 2 more answers

William hikes at a constrant rate , converting 6 miles in 2 hours, which expression represents how many miles william hikes in 4

yulyashka [42]

The answer is D
6/2=3 miles per hour

6 0

2 years ago

I have no idea what this is

sattari [20]

Answer:

If y = 30, x = 10

Explanation:

If you extend the line to reach the y-value of 30, the x-value of the point will be 10. So, if y = 30, x = 10.

Good luck ^^

7 0

3 years ago