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3 years ago

What is the solution of the following system x-y=11 -x+y=-11

1 answer:

5 0

The answer is infinitely many solutions.

x - y = 11
-x + y = -11
_____
Express the first equation in the term of x and substitute it into the second equation:
x = y + 11
-x + y = -11
_______
-(y + 11) + y = -11
-y - 11 + y = -11
-y + y = 11 - 11
0 = 0

So, the system has infinitely many solutions.

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Find AC What Is The Equation To AC?

In-s [12.5K]

Given:

Given that ABC is a right triangle.

The length of AB is 7 units.

The measure of ∠A is 65°

We need to determine the length of AC

Length of AC:

The length of AC can be determined using the trigonometric ratio.

Thus, we have;

$cos \ \theta=\frac{adj}{hyp}$

Where the value of $\theta$ is 65° and the side adjacent to the angle is AC and the side hypotenuse to the angle is AB.

Substituting the values, we have;

$cos \ 65^{\circ}=\frac{AC}{AB}$

Substituting AB = 7, we have;

$cos \ 65^{\circ}=\frac{AC}{7}$

Multiplying both sides by 7, we get;

$cos \ 65^{\circ} \times 7=AC$

$0.423 \times 7=AC$

$2.961=AC$

Rounding off to the nearest hundredth, we get;

$2.96=AC$

Thus, the length of AC is 2.96 units.

6 0

4 years ago

Please help i will mark brainliest (15 Points ) HELP PLEASE

igor_vitrenko [27]

The answer should be; 729 cm^3

8 0

3 years ago

Read 2 more answers

What two ways can you find the product of 8x997 using mental math

ss7ja [257]

8=10-2 or
997=1000-3
so we can use distributive property
remember, a(b+c)=ab+ac

for the first one
8(997)=(10-2)(997)=997(10-2)=997(10)+997(-2)=9970-1994=7976

2nd one
8(997)=8(1000-3)=8(1000)+8(-3)=8000-24=7976

7 0

3 years ago

A local television station runs 2.5 minutes of commercials during every 30 minutes of programming. At this rate, how many minute

umka21 [38]

Answer:

12.5 minutes of commercials

Step-by-step explanation:

9:30 - 7:00 = 2 and a half hours on air = 150 minutes.

150 / 30 = 5

5 x 2.5 = 12.5

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3 years ago

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Which of the following is true? |−6| < 5 |−6| < |5| |−5| < |−6| |−5| < −6

Vera_Pavlovna [14]

[-5]<[-6] is the answer

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4 years ago