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3 years ago

A rectangle is 12cm long and 5cm wide. Find the size of the angle marked x.

Mathematics

1 answer:

neonofarm [45]3 years ago

4 0

Answer:

22.61°

Step-by-step explanation:

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38503.45 in standard form

Alina [70]

Hey there!

<h2>ANSWER: $38503.45$ </h2><h2>EXPLANATION:</h2>

38503.45 in standard form.

The decimal 38503.45 is already in standard form. Try multiplying $38503.45$ by $10^0$ .

$38503.45*10^0=38503.45\\38503.45(ANSWER)$

The answer is the same as the decimal. That is because it was already in the standard form.

Hope this helps!

$\text {-TestedHyperr}$

8 0

3 years ago

Please help solve with working much appreciated!

Lapatulllka [165]

The right answer is Option A.

Step-by-step explanation:

Given,

Heart rate goal = I

Heart rate reserve = H

70% of H = $\frac{70}{100}H = 0.7H$

Resting heart rate = R

According to given statement,

70% of heart rate reserved is added to resting heart rate to calculate heart rate goal, therefore,

I = R + 0.7H

I=R+0.7H represents the given situation.

The right answer is Option A.

Keywords: linear expression, addition

Learn more about addition at:

#LearnwithBrainly

8 0

3 years ago

2sin(4x)+6=5

a_sh-v [17]

Let's solve the sine equation.

1. Express sine function in the left side of equation:

$2\sin (4x)+6=5,\\ 2\sin (4x)=5-6,\\ 2\sin (4x)=-1,\\ \\ \sin (4x)=-\dfrac{1}{2}$ .

2. Use the genereal solution to get the solution of your equation:

$4x=(-1)^n\arcsin \left(-\dfrac{1}{2}\right) +2\pi n$ , where $n\in Z$ .

3. Find $\arcsin \left(-\dfrac{1}{2}\right)$ :

$\arcsin \left(-\dfrac{1}{2}\right)=-\dfrac{\pi}{3}$ .

4. Substitute part 3 into part 2 and express x:

$4x=(-1)^n \left(-\dfrac{\pi}{3}\right) +2\pi n$ , where $n\in Z,$

$x=(-1)^{n+1}\cdot \dfrac{\pi}{12}+\dfrac{\pi n}{2}$ , where $n\in Z$ .

5. Solutions of your equation are:

$x=(-1)^{n+1}\cdot \dfrac{\pi}{12}+\dfrac{\pi n}{2}$ , where $n\in Z$ .

5 0

3 years ago

Read 2 more answers

What is the best compounding period through annuity to pay back a debt of $4500 for college through 4 years?and why? Note:compou

lesya692 [45]

I believe the correct answer would be a choice where there is less period of paying since the less time to pay it, then the less interest you will have.
Hope this answers the question. Have a nice day.

3 0

3 years ago

This is Quadratics.<br> (5n−5)(2+2n)

ki77a [65]

Answer: 10n^2 - 10

Step-by-step explanation:

(5n - 5)(2+2n) becomes (5n-5)(2n+2)

= (5n)(2n) + (5n)(2) + (-5)(2n) + (-5)(2)

= 10n^2 - 10

5 0

3 years ago