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3 years ago

Find the Value of a and b in the triangle below select the two answers fro the list of choices

Mathematics

2 answers:

shutvik [7]3 years ago

7 0

Answer:

Angle a is 42 degrees and Angle b is 138 degrees

Step-by-step explanation:

I show my working in the pic above

The only thing that is weird is that 42 degrees is not an option in in your answers but im certain that angle A is 42 degrees

nataly862011 [7]3 years ago

3 0

For angle a it will be 42degrees and for angle b it will be 138degrees and i am 100%sure

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Which statements are true about the ordered pair(-1, -4) and the system of equations?

Lesechka [4]

Answer:

a) when (-1,-4) is substituted into the first equation

then the equation is satisfied

b) The ordered pair(-1, –4) is a solution to the system of linear equations.

Step-by-step explanation:

Step(i):-

Given that the system of equations

x -y =3 ...(i)

7x -y =-3 ...(ii)

subtracting (i) and (ii) equations , we get

x -y -(7x-y) = 3 -(-3)

x - y - 7x + y = 6

- 6x = 6

x = -1

Step(ii):-

Substitute x=-1 in equation (i), we get

x -y =3

-1 -y = 3

y = -1-3

y = -4

The solution of the given system of equations (-1,-4)

Final answer:-

a) when (-1,-4) is substituted into the first equation

then the equation is satisfied

b) The ordered pair(-1, –4) is a solution to the system of linear equations.

6 0

3 years ago

A tire manufacturer knows that 5% of tires contain a defect, and the presence of a defect is independent from tire to tire.

saul85 [17]

The probability that if 5 tires are inspected, exactly 2 have a defect is 0.021

<h3>How to calculate the probability</h3>

The given parameters are:

$p = 5\%$ --- the proportion that contains defect

$n =5$ --- the sample size

$r =2$ -- the selected sample

The probability is then calculated as:

$P(x =r) = ^nC_r * p^r * (1 - p)^{n-r}$

So, we have:

$P(x =2) = ^5C_2 * (5\%)^2 * (1 - 5\%)^{5-2}$

$P(x =2) = 10 * (5\%)^2 * (1 - 5\%)^3$

$P(x =2) = 0.021$

Hence, the probability that if 5 tires are inspected, exactly 2 have a defect is 0.021

Read more about probabilities at:

brainly.com/question/15246027

5 0

2 years ago

Read 2 more answers

Need help

ZanzabumX [31]

Step-by-step explanation:

So I didnt really understand the beginning but what I did was $325x24=$7800 payed in 24 months if we are adding the $4500 it would be

$7800+$4500=$12300

8 0

3 years ago

Read 2 more answers

What is the range of the given function? {(–2, 0), (–4, –3), (2, –9), (0, 5), (–5, 7)

BaLLatris [955]

Answer:

{0, –3, –9, 5, 7)}

Step-by-step explanation:

The range of the function is the list of second numbers in the ordered pairs:

{0, –3, –9, 5, 7)}

_____

If you like, you can rearrange them to increasing order:

{-9, -3, 0, 5, 7}

8 0

3 years ago

84 of %300. i somehow got 24 but the answer was something like 252, i dont really get how. can you help?

Yuri [45]

Answer:

252

Step-by-step explanation:

Of means multiply

84 % * 300

Change to decimal form

.84 * 300

252

3 0

4 years ago

Read 2 more answers