All categories

2 years ago

Help me pleaseeeeeeeeeee

Mathematics

2 answers:

algol [13]2 years ago

5 0

Answer:

The answer is ABC

rewona [7]2 years ago

5 0

The answer is abc enjoy your day

You might be interested in

I need help on this!!

olga nikolaevna [1]

Answer:

Commutative

Step-by-step explanation:

Given

$3 + b + 2 = 3 + 2 + b$

Required

What law is applied

The applied law is commutative law of addition.

This law states that:

$a + b = b + a$

So:

$3 + b + 2 = 3 + (b + 2)$

When the positions of 2 and b are interchanged, we have:

$3 + b + 2 = 3 + (2 + b)$

Remove bracket

$3 + b + 2 = 3 + 2 + b$

3 0

2 years ago

A train is traveling at a constant speed. The diagram represents the train's distance and time. What is the speed of the train?

Over [174]

240÷6=40 so the answer would be "The train is traveling 40 miles per hour."

6 0

3 years ago

Read 2 more answers

Use a half-angle identity to find the exact value

Tatiana [17]

Given:

$\cos 15^{\circ}$

To find:

The exact value of cos 15°.

Solution:

$$\cos 15^{\circ}=\cos\frac{ 30^{\circ}}{2}$

Using half-angle identity:

$$\cos \left(\frac{x}{2}\right)=\sqrt{\frac{1+\cos (x)}{2}}$

$$\cos \frac{30^{\circ}}{2}=\sqrt{\frac{1+\cos \left(30^{\circ}\right)}{2}}$

Using the trigonometric identity: $\cos \left(30^{\circ}\right)=\frac{\sqrt{3}}{2}$

$$=\sqrt{\frac{1+\frac{\sqrt{3}}{2}}{2}}$

Let us first solve the fraction in the numerator.

$$=\sqrt{\frac{\frac{2+\sqrt{3}}{2}}{2}}$

Using fraction rule: $\frac{\frac{a}{b} }{c}=\frac{a}{b \cdot c}$

$$=\sqrt{\frac {2+\sqrt{3}}{4}}$

Apply radical rule: $\sqrt[n]{\frac{a}{b}}=\frac{\sqrt[n]{a}}{\sqrt[n]{b}}$

$$=\frac{\sqrt{2+\sqrt{3}}}{\sqrt{4}}$

Using $\sqrt{4} =2$ :

$$=\frac{\sqrt{2+\sqrt{3}}}{2}$

$$\cos 15^\circ=\frac{\sqrt{2+\sqrt{3}}}{2}$

5 0

3 years ago

Alexis has 36 marbles he gives 1/9 of marbles away to Sara. How may marbles did Sara have

sattari [20]

1/9 of total marbles = 1/9 × 36 = 4
so Alexis gave 4 marbles to Sara.
And so Alexis is left behind with 32 (36-4) marbles and so Sara have 4 marbles now

7 0

3 years ago

Read 2 more answers

What is six times more than three times a number is that number increased by 24. Find the number. Write an equation. And find x

Lubov Fominskaja [6]

Given the information, you can only write an expression and simplify it:

6(3(x+24))

6(3x+72)

SOlution: 18x+432

I hope I helped you with your solution! If you could give me brainliest, I would be very thankful!

4 0

3 years ago