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babunello [35]
3 years ago
15

Help plz:))) I’ll mark u Brainliest Please

Mathematics
1 answer:
ratelena [41]3 years ago
6 0

Answer:

C. ∠10

Explanation:

A theorem states that the two angle that are in the same side and are opposite to each other, they add up to 180°, which is supplementary.

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Evaluate each expression when n = 4 and b = 7
alexgriva [62]

Answer:

1. 5  2. 31  3. 55

Step-by-step explanation:

1. 2(4)-3=8-3=5

2. 4(7)+3=28+3=31

3. 3(4)+8(7)-13=12+56-13=56-1=55

4 0
3 years ago
Read 2 more answers
Two real solutions of tx^2+3x_7=0
Olegator [25]

The number of solutions of a quadratic equation

ax^2+bx+c=0

Depends on its discriminant

/Delta=b^2-4ac

If /Delta>0 there are two distinct solutions

If /Delta=0 there are two coincident solutions

If /Delta<0 there are no solutions.

We know that there are two real solutions (I assume you mean distinct solutions), so we know that the discriminant is positive:

The number of solutions of a quadratic equation

Depends on its discriminant

If there are two distinct solutions

If there are two coincident solutions

If there are no solutions.

We know that there are two real solutions (I assume you mean distinct solutions), so we know that the discriminant is positive:

b^2-4ac=9+28t>0\iff t>-\dfrac[9][28]

3 0
3 years ago
If A is a square matrix of order 2, then det(-3A) is *
Vsevolod [243]

Answer:

c. 9 det A

Step-by-step explanation:

Given the following data;

Since A is a square matrix of order 2, we know that n = 2

K = 3

For any scalar k;

∣kA∣ = k^{n} ∣A∣

<em>Substituting into the equation;</em>

∣-3A∣ = -3²∣A∣

Simplifying, we have;

∣-3A∣ = 9∣A∣

= 9 detA

<em>Therefore, det (-3A) = 9 detA</em>

6 0
3 years ago
Read 2 more answers
What is the interval notation for the compound inequality?
ZanzabumX [31]
7 beacuse 7 is bigger then 3 I think I took this quiz but got a bad grade
6 0
3 years ago
2x – 3y = 15<br><br><br>-2x + y = -1
KengaRu [80]

Answer: -y=7

Explanation:

Think of your problem as subtraction:

2x-3y+15

-2x+3y=-1

8 0
3 years ago
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