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3 years ago

Based on the side lengths alone, could the triangles be similar? 16.0 cm R 6.4 cm 3.0 cm 15.0 cm S T 6.0 cm X 7.5 cm U

Mathematics

2 answers:

Katarina [22]3 years ago

8 0

Answer:

The correct answer is B. Yes, the sides are in the ratio 2:5.

Step-by-step explanation:

Hope this helps, and have a wonderful day! :)

Bumek [7]3 years ago

3 0

Answer:

Yes, the sides are in the ration 2:5!

Step-by-step explanation:

Hope this helps.

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3×-2×+5-3<br>Help me plz

Burka [1]

Answer:

x+2

Step-by-step explanation:

3x-2x+5-3=x+2

3 0

3 years ago

Read 2 more answers

Quite urgent lol but should probably be quick I guess :(

Anni [7]

Answer:

(a) $y=x^2-2x-8$

(b) $y= -\dfrac12x^2+4x-6$

Step-by-step explanation:

(a) From inspection of the graph, the x-intercepts (where $y = 0$ ) are at

$x = -2$ and $x =4$ .

Therefore $y = a(x + 2)(x - 4)$ where $a$ is some constant

The y-intercept is at (0, -8)

Expanding the equation:

$y = a(x + 2)(x - 4)$

$\implies y = a(x^2-4x+2x-8)$

$\implies y= ax^2-2ax-8a$

Therefore, -8a is the y-intercept

Comparing y-intercepts: -8 = -8a ⇒ a = 1

Substituting a = 1, the final equation in standard form is:

$y=x^2-2x-8$

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(b) From inspection of the graph, the x-intercepts (where $y = 0$ ) are at

$x = 2$ and $x =6$ .

Therefore $y = a(x -2)(x - 6)$ where $a$ is some constant

The y-intercept is at (0, -6)

Expanding the equation:

$y = a(x -2)(x - 6)$

$\implies y = a(x^2-6x-2x+12)$

$\implies y= ax^2-8ax+12a$

Therefore, 12a is the y-intercept

Comparing y-intercepts:

$-6 = 12a \implies a = -\dfrac12$

Substituting found value of a into the equation:

$\implies y= (-\dfrac12)x^2-8(-\dfrac12)x+12(-\dfrac12)$

$\implies y= -\dfrac12x^2+4x-6$

5 0

2 years ago

Read 2 more answers

Which of the coordinate points below will fall on a line where the constant of proportionality is 3? Select all that apply. A) (

Gelneren [198K]

Answer:

C) (2,6) D) (3,9) E) (4,12)

Step-by-step explanation:

y = k*x

We know that k =3

y = 3x

So y/x = 3

A) (4,16) 16/4 = 4 no

B) (2,10) 10/2 = 5 no

C) (2,6) 6/2 = 3 yes

D) (3,9) 9/3 = 3 yes

E) (4,12)12/4 = 3 yes

4 0

3 years ago

The sum of five consecutive even integers is 120, what is the 5th number in the sequence

Inessa05 [86]

120/5 = 24

so 20 + 22 +24 +26 +28 = 120

5th number = 28

3 0

3 years ago

One of the byproducts of nuclear power generation is Uranium-233. Uranium is decaying at a constant 32% rate per day. If 12,880

Stells [14]

A trick for solving this on a calculator is entering 12880*.68 twenty times

Or f(t)=a(l-r)^t

t=time
a=initial amount
r=rate of decrease

f(20)=12880(l-.32)^20

It is about 5.75564656018

8 0

3 years ago