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3 years ago

Which explains why this system has no solution?

Mathematics

2 answers:

den301095 [7]3 years ago

7 0

Answer:

C. Each has a slope of –3, but one has a y-intercept of 3 and the other has a y-intercept of –1, which makes the lines parallel.

Step-by-step explanation:

Parallel lines will have no solution, since they share no points. To be parallel, they will have the same slope and different intercepts.

___

If the intercepts and slopes are the same, the lines are identical and there will be an infinite number of solutions.

natta225 [31]3 years ago

3 0

Answer:

Your Answer is C

Step-by-step explanation:

Parallel lines will have no solution, since they share no points. To be parallel, they will have the same slope and different intercepts.

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ANSWER ASAP!! Find the area of a triangle with legs that are: 12 m, 15 m, and 9 m.

Setler79 [48]

Answer:

Step-by-step explanation:

<h3>METHOD 1:</h3>

You can use the Heron's formula:

$A=\sqrt{p(p-a)(p-b)(p-c)}$

where

<em>p</em><em> - half of perimeter</em>

<em>a, b, c</em><em> - lengths of sides</em>

We have

$a=12m;\ b=15m;\ c=9m$

Calculate:

$p=\dfrac{12+15+9}{2}=\dfrac{36}{2}=18\ (m)\\\\A=\sqrt{18(18-12)+(18-15)(18-9)}\\\\A=\sqrt{(18)(6)(3)(9)}\\\\A=\sqrt{2916}\\\\A=54\ (m^2)$

<h3>METHOD 2:</h3>

Let's check that it is not a right triangle.

If the sum of the squares of the two shorter sides is equal to the square of the longest side, then this triangle is rectangular.

We have

$9m < 12m$

Check:

$9^2+12^2=81+144=225\\15^2=225$

This is a right trianglr wherew 9m and 12m are legs and 15m is a hypotenuse.

The formula of an area of a right triangle is:

$A=\dfrac{ab}{2}$

Substitute:

$A=\dfrac{(9)(12)}{2}=\dfrac{108}{2}=54\ (m^2)$

6 0

3 years ago

What times what equals 168 besides 84 times 2?

Art [367]

Answer:

12 & 14

Step-by-step explanation:

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2 years ago

Taj had 15 books. He gave some of the books to his friends.

deff fn [24]

The answer is B six books, hope this helps!

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3 years ago

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12. In a certain cafe, all the sandwiches and drinks are priced the

kakasveta [241]

The cost of one sandwich is $3.90

The cost of one deknk is $1.50

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3 years ago

Twenty-four students took a test. Fourteen students earned an A and 10 students earned a B. A student will be randomly chosen.

Alex_Xolod [135]

The probability of a student that earned an A on the test is 7/12.

To get a fraction like this, you put the number of students on the left, or the top and the number of students total on the right, or bottom. Then, you simplify your answer. This brings us to 7/12. You cannot simplify any further because the fraction includes a prime number.

I hope this helps!

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3 years ago

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