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3 years ago

What is the measure of ∠A? A. 45° B. 15° C. 60° D.) Cannot be determined

Mathematics

2 answers:

andrew-mc [135]3 years ago

8 0

Triangle has 3 equal sides so it is equilateral triangle.

<A = <B = <C = 60 degrees

Answer

C. 60°

RideAnS [48]3 years ago

4 0

60 degrees, Because the angle measures in a triangle always add up to 180. If your sides are all the same length then it is also true that your angles will be and 60 x 3 equals 180

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Calculate the rise and run and find the slope ( (4,-7) and (4,0)

Marta_Voda [28]

Hey there! :D

Slope formula:

m= (y2-y1)/(x2-x1)

m= (0-(-7)/(4-4)

m=0+7/0

m=7/0

The rise is 7 and the run is 0.

I hope this helps!
~kaikers

7 0

3 years ago

Suppose two vectors point in opposite directions. This means their cross product must be zero. True or false?

snow_tiger [21]

It is true if two vectors point in opposite directions. This means their cross product must be zero.

<h3>What is cross product?</h3>

Cross product is a vector product of two vectors in the three dimensional vector space.

In the case when the two vectors point in opposite directions so there cross product should be zero.

Impact on two points:

In the case when the two vectors point in opposite directions so there cross product should be zero.

A*B = [A][B] sin

Here theta is be the angle that lies between them

So,

A*B = [A][B] sin 180

So, A*B = 0

hence, the given statement is true.

learn more about vectors here:

brainly.com/question/21797532

#SPJ4

8 0

2 years ago

In an assembly-line production of industrial robots, gearbox assemblies can be installed in one minute each if holes have been p

Illusion [34]

Answer:

The right answer is:

(a) 0.1456

(b) 18.125, 69.1202, 8.3139

Step-by-step explanation:

Given:

N = 24

n = 5

r = 7

The improperly drilled gearboxes "X".

then,

⇒ $P(X) = \frac{\binom{7}{x} \binom {17}{5-x}}{\binom{24}{5}}$

(a)

P (all gearboxes fit properly) = $P(x=0)$

= $\frac{\binom{7}{0} \binom{17}{5}}{\binom{24}{5}}$

= $0.1456$

(b)

According to the question,

$X = 91+5$

Mean will be:

⇒ $\mu = E(x)$

$=E(91+5)$

$=9E(1)+5$

$=9.\frac{nr}{N}+5$

$=9.\frac{5.7}{24} +5$

$=18.125$

Variance will be:

⇒ $\sigma^2=Var(X)$

$=V(9Y+5)$

$=81.V(Y)$

$=81.n.\frac{r}{N}.\frac{N-r}{N}.\frac{N-n}{N-1}$

$=81.5.\frac{7}{24}.\frac{24-7}{24}.\frac{24-5}{24-1}$

$=69.1202$

Standard deviation will be:

⇒ $\sigma = \sqrt{69.1202}$

$=8.3139$

8 0

4 years ago

A fruit stand has 28 apples, 20 oranges, and 12 pears. What is the ratio of apples to the total pieces of fruit?

ruslelena [56]

Data:
Apples = 28
Oranges = 20
Pears = 12

<span>What is the ratio of apples to the total pieces of fruit?
Solving:
</span> $\frac{apples}{apples+oranges+pears} = \frac{28}{28+20+12} = \frac{28}{60} \frac{\div4}{\div4} \to\:\boxed{\boxed{ratio = \frac{7}{15}}}\end{array}}\qquad\quad\checkmark$ <span>
</span>

5 0

3 years ago

Anyone know how to do BOTH of these? Thanks!

cricket20 [7]

The answer to the top one is 243.

6 0

3 years ago

Read 2 more answers