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3 years ago

Graph this function using intercepts Solve 10x+9y=-90

Mathematics

1 answer:

Alex17521 [72]3 years ago

6 0

Answer:

Step-by-step explanation:

So first, lets solve for the intercepts.

Let’s start by finding the x intercept.

Plug in 0 for y.

10x+9(0)=-90

10x=-90

X=-9, so your first point on your line will be (-9,0).

Now the y intercept.

Plug in 0 for x.

10(0)+9y=-90

9y=-90

Y=-10, so your second point on your line will be (0,-10).

Use those points to create your line.

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Please help me now ! Thank you

jarptica [38.1K]

First we'll do two basic steps. Step 1 is to subtract 18 from both sides. After that, divide both sides by 2 to get x^2 all by itself. Let's do those two steps now

2x^2+18 = 10
2x^2+18-18 = 10-18 <<--- step 1
2x^2 = -8
(2x^2)/2 = -8/2 <<--- step 2
x^2 = -4

At this point, it should be fairly clear there are no solutions. How can we tell? By remembering that x^2 is never negative as long as x is real.

Using the rule that negative times negative is a positive value, it is impossible to square a real numbered value and get a negative result.

For example
2^2 = 2*2 = 4
8^2 = 8*8 = 64
(-10)^2 = (-10)*(-10) = 100
(-14)^2 = (-14)*(-14) = 196

No matter what value we pick, the result is positive. The only exception is that 0^2 = 0 is neither positive nor negative.

So x^2 = -4 has no real solutions. Taking the square root of both sides leads to

x^2 = -4
sqrt(x^2) = sqrt(-4)
|x| = sqrt(4)*sqrt(-1)
|x| = 2*i
x = 2i or x = -2i
which are complex non-real values

5 0

3 years ago

I need help . need to get done quick thank you

marissa [1.9K]

The first one equals 0.00116

The second one equals 195,000

the third one equals 0.0286

and the fourth one equals 87,310,000,000,000,000

The smallest one is A 0.00116

Hope this helps, Jesus loves you!

4 0

3 years ago

Read 2 more answers

Suizi bought 5 packages of M&M and each package contained 18 candy pieces. She opened the frist package and counted 4 green

masha68 [24]

<h3>There are fewer than 14 green pieces in all 5 packages. </h3>

Step-by-step explanation:

Here, the given question is incomplete.

Suzi bought 5 packages of M&M's, and each package contained 18 candy pieces. She opened the first package and counted 4 green pieces. She then counted 3 green pieces in the second package. Which statement about the candy pieces in the remaining packages is best supported by this information?

A. There are fewer than 14 green pieces in all 5 packages.

B. There are between 15 and 20 green pieces in all 5 packages.

C. There are at least 25 green pieces but no more than 50 in all 5 packages. D. There are more than 50 green pieces in all 5 packages.

Now, here given:

The number of packages of M & M purchased = 5 packets

The number of candies in each packet = 18

The number of green candies in first pack = 4

The number of green candies in second pack = 3

Now as we can see the number of green candies in <u>decreasing by 1</u><u> </u>in number as we open more packets.

So, according to this pattern:

The number of green candies in third pack = 2

The number of green candies in fourth pack = 1

And the fifth pack will have NO green candies.

So, the total number of green candies in all 5 packets combined

= 4 + 3+ 2 + 1 + 0

= 10 green candies

⇒ There are fewer than 14 green pieces in all 5 packages.

5 0

3 years ago

Which function below represents the arithmetic sequence 3, 7, 11, 15...? . f(n) = 4 + 3(n – 1). f(n) = 4 + 3n. f(n) = 3 + 4n. f(

Anna35 [415]

The given above is an arithmetic sequence with first term equal to 3 and the common difference equal to 4. That is from 7 - 3 = 11 - 7 = 15 - 11. The nth term of an arithmetic sequence is given by the equation,
an = a1 + (n - 1) x d
Substituting the given,
an = 3 + 4(n - 1)
thus, the answer is the fourth choice.

5 0

3 years ago

Read 2 more answers

Factor in simplest form: 6x + 12

juin [17]

Answer:

x+2

Step-by-step explanation:

6x+12

6x/6=x

12/6=2

7 0

3 years ago