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2 years ago

Please help!! I don't get it!!

Mathematics

1 answer:

Trava [24]2 years ago

5 0

Find the line for each given equation in the problem.

If they cross each other ( at least one solution) it is consistent.

If they do not cross each other at all, it is inconsistent.

If a consistent system has only one answer it would be independent.

If a consistent system has infinite solutions ( this would be just a straight line) it would be dependent.

If there are no solutions, it is neither dependent or independent.

1. Both lines cross each other in one place, so this is consistent and independent.

2. Both lines cross each other in one place, so this is consistent and independent.

3. The two lines do not cross each other, so this is inconsistent.

There are no solutions, so this is neither dependent or independent.

4. Both lines cross each other in one place, so this is consistent and independent.

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Need the answer to this

ki77a [65]

Answer:

$\frac{2}{(x + 3)}$

Step-by-step explanation:

$\frac{2x - 10}{x^{2} - 2x - 15}$

pull 2 from top

$\frac{2(x - 5)}{x^{2} - 2x - 15}$

we are looking to cancel (x-5) so will start with

(x - 5)(x + 3), selected (x+3) because the sign must be negative and must multiply to -15

$\frac{2(x - 5)}{(x - 5)(x + 3)}$

now cancel (x-5)

$\frac{2}{(x + 3)}$

4 0

1 year ago

What is the sum of the series?

Mamont248 [21]

Answer:

Step-by-step explanation:

Since the values are relatively small substitute i = 1 to 5 into 3i and sum

(3 × 1) + (3 × 2) + (3 × 3) + (3 × 4) + (3 × 5)

= 3 + 6 + 9 + 12 + 15

= 45

6 0

2 years ago

In a class of 40 students 75% wore shorts today how many students wore shorts?

Stella [2.4K]

The answer is blah blah 30

7 0

2 years ago

Read 2 more answers

PLEASE HELP ASAP PLS !!! WILL MARK BRAINLIEST !!

barxatty [35]

Answer:

i believe it's 31°. not messing around either

7 0

2 years ago

A sailor is 30m above the water in the crow's nest on a sailboat. The sailor encounters an orca surface at an angle of depressio

Natali [406]

Given :

A sailor is 30 m above the water in the crow's nest on a sailboat.

The sailor encounters an orca surface at an angle of depression of 15 degrees.

The crows nest is 20 m horizontally from the bow (front) of the boat.

To Find :

How far in front of the boat is the orca.

Solution :

Let, distance of boat front from the crow's nest is x.

So,

$\dfrac{30}{20+x}=tan \ 15^{\circ}\\\\x=\dfrac{30}{tan \ 15^{\circ}}-20\\\\x=111.94-20\\\\x=91.94\ m$

Hence, this is the required solution.

4 0

2 years ago