All categories

3 years ago

PLEASE HELP it’s MULTIPLE CHOICE i’ll mark BRAINLIEST AND I ADDED EXTRA POINTS!!

Mathematics

2 answers:

Whitepunk [10]3 years ago

7 0

Answer:

Easy b

Step-by-step explanation:

Because

tamaranim1 [39]3 years ago

6 0

Its the last one
slope is 1/3
y-intercept is -1

You might be interested in

Subtract 8-4 1/2. A. 3 B. 4 C. 4 1/2 D. 3 1/2

kicyunya [14]

This was the answer I came up with - 3.5

3 0

4 years ago

How many integers satisfy $-4 <= 2x+1 <=6$ (<= means the sign that it is less than and equal to)

Vladimir [108]

2 I think I am wrong

5 0

3 years ago

2. In Australia, there are approximately 100 species of venomous snakes, but only about 12 have a deadly

Savatey [412]

Answer:

The required probability is 0.3717.

Step-by-step explanation:

Consider the provided information.

There are approximately 100 species of venomous snakes, but only about 12 have a deadly bite.

zoo randomly selects one snake from each of five different species to show visitors.

The total number of ways to select 5 different species out of 100 are:

$^{100}C_5=\frac{100!}{5!95!}=75287520$

We need to find the probability that exactly one of the five snakes shown is deadly.

That means out of 12 deadly bite we need to select only 1.

Thus, the number of ways are:

$^{12}C_1\times ^{88}C_4=\frac{12!}{11!}\cdot\frac{88!}{4!84!}=27982680$

Hence, the required probability is:

$\frac{27982680}{75287520}\approx0.3717$

The required probability is 0.3717.

4 0

3 years ago

Tan42 = 7 divided by x. what is the value of x?

Tems11 [23]

Answer:

x=6

Step-by-step explanation:

42/7=6

6*7=42

42/6=7

So, works in all ways.

Hope this helps!

3 0

4 years ago

Can someone please help me answer these 2 questions with a full explanation so I can do the rest on my own? will give brainliest

Anton [14]

Answer:

a) ∠ABC = 54°

a) ∠ABC = 43°

Step-by-step explanation:

Trigonometric ratios

$\sf \sin(\theta)=\dfrac{O}{H}\quad\cos(\theta)=\dfrac{A}{H}\quad\tan(\theta)=\dfrac{O}{A}$

where:

$\theta$ is the angle
O is the side opposite the angle
A is the side adjacent the angle
H is the hypotenuse (the side opposite the right angle)

Part (a)

Use the cos trig ratio to find an expression for the measure of BD:

$\implies \sf \cos (38^{\circ})=\dfrac{BD}{24.3}$

$\implies \sf BD=24.3\cos (38^{\circ})$

Use the cos trig ratio and the found length of BD to find angle ABD:

$\sf \implies \cos(ABD)=\dfrac{BD}{19.9}$

$\sf \implies \angle ABD=\cos^{-1}\left(\dfrac{24.3\cos (38^{\circ})}{19.9}\right)$

$\sf \implies \angle ABD=15.79446612...^{\circ}$

Therefore:

$\sf \implies \angle ABC=\angle ADB + 38^{\circ}$

$\sf \implies \angle ABC=15.79446612...^{\circ}+ 38^{\circ}$

$\sf \implies \angle ABC=54^{\circ}\:\:(nearest\:degree)$

Part (b)

Use the tan trig ratio to find angle CAD:

$\implies \sf \tan(CAD)=\dfrac{4.9}{7.4}$

$\implies \sf \angle CAD=\tan^{-1} \left(\dfrac{4.9}{7.4}\right)$

$\implies \sf \angle CAD=33.5110188...^{\circ}$

Therefore:

$\sf \implies \angle BAD=13^{\circ}+33.5110188...^{\circ}$

$\sf \implies \angle BAD=46.5110188...^{\circ}$

∠ABC = ∠ABD

Interior angles of a triangle sum to 180°

$\sf \implies \angle ABD + \angle BAD + \angle BDA=180^{\circ}$

$\sf \implies \angle ABC + 46.5110188...^{\circ} + 90^{\circ}=180^{\circ}$

$\sf \implies \angle ABC=43^{\circ}\:\:(nearest\:degree)$

4 0

3 years ago