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2 years ago

8

Help please! Under 5 mins

1 answer:

Inga [223]2 years ago

8 0

Answer:

2.3

Step-by-step explanation:

Using SOH CAH TOA, we can label CB as the alternate side seeing as it's opposite to the known angle 50 degrees. We know AB is the hypotenuse since it's the longest side. Therefore CA must be the alternate side.

Since we want to know BC, and we know information about AB, we need to use the use of the hypotenuse and the opposite. In SOH CAH TOA, SOH uses both of these.

Using S O H, we understand that sin(50) * 3 = CB

Therefore CB = 2.3 to 1 decimal place.

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Is RATIONAL , IRRATIONAL,NON REAL NUMBERS <br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B27" id="TexFormula1" title=" \sqrt{

Tanya [424]

Answer:

It's irrational

Step-by-step explanation:

the square root of 27 is equal to:

$\sqrt{27} = \sqrt{3\cdot3\cdot3} = 3\sqrt{3}$

We know that $\sqrt{3}$ is an irrational number (but a real number), so $3\sqrt{3}$ is the same.

In case we need to prove that $\sqrt{3}$ is irrational, please leave a comment.

8 0

2 years ago

Read 2 more answers

ΔABC undergoes a translation to become ΔA'B'C'. Are the triangles congruent, similar, neither or both? Explain.

Alenkasestr [34]

I can’t solve without a graph.

6 0

1 year ago

Factorise fully the following:<br>a) x² + 2x<br>b) 2x² - 6x<br>c) 15x - 10x³<br>d) 9x² + 3x³

Lostsunrise [7]

Answer:

a) $x(x+2)$

b) $2x(x-3)$

c) $5x(3-2x^2)$

d) $3x^2(3+x)$

Step-by-step explanation:

a) $x^2+2x$

When factoring a binomial (a polynomial with two terms), what we will be looking for are the terms that are shared between them.

In this problem, it can be seen that both of these terms have and x. This means that we can factor it out to get

$x(x+2)$

b) $2x^2-6x$

What are the common terms here?

It can be seen that each of these share a 2x, so our factored form would be

$2x(x-3)$

c) $15x-10x^3$

What about this one?

The common factor of this one is 5x, so our factored form would be

$5x(3-2x^2)$

d) $9x^2+3x^3$

The common factor of this one is $3x^2$ , so our factored form would be

$3x^2(3+x)$

6 0

3 years ago

Which expression has the same value as 3,648 - 1,223? A. 3,000 - 1,000 + 40 - 20 + 8 - 3 + 6 - 2 B. 3,000 - 1,000 + 600 - 200 +

natulia [17]

Answer:

B

Step-by-step explanation:

3000-1000 = 2000

600-200 = + 400

40 - 20 = + 20

8 - 3 = + 5

7 0

3 years ago

I need help please !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

vichka [17]

112 m³

the solid is a rectangular pyramid with volume (V)

V = $\frac{1}{3}$ × area of base × height = $\frac{1}{3}$ × (8 × 4.2 ) × 10 = 112 m³

4 0

2 years ago