All categories

2 years ago

Geometry pls help

Mathematics

1 answer:

IRINA_888 [86]2 years ago

8 0

Answer:

Hi,can you please answer mine too I really need the answer because I have to pass it later at 10 pm and it's already 9:24pm it's just 2 questions 17-18:(

Directions: Simplify the following monomials (if possible).

17.) Subtract 9a from -15a

18.) From -9cd², subtract -2cd²

I hope you can help me:(

Step-by-step explanation:

about your question I'll just put it in the comment section:)

You might be interested in

Jessica’s friend lent her $5. Later that day Jessica gave her friend back $1.75 Which rational number represents the overall cha

Vesna [10]

Answer:

-$3.25

Step-by-step explanation:

She had $5 to begin with and ended with $1.75 the change is - because she has less 5-1.75=3.25

3 0

2 years ago

Read 2 more answers

5 (2x – 1) –7 = 2 (x – 3)

Sladkaya [172]

Answer:

x−3=x−3

Step-by-step explanation:

Evaluate (2x−1)−7, then set it equal to 2.

Subtract 7 from −1 = 2x−8

Solve 2x−8=2.

Move all terms not containing x to the right side of the equation.

Add 8 to both sides of the equation=2x=2+8

Add 2 and 8=2x=10

Divide each term by 2 and simplify.

Divide each term in 2x=10 by 2=2x/2=10/2

Cancel the common factor of 2

Cancel the common factor=10/2

Divide x by 1=x=10/2

Divide 10 by 2=x=5

Remove parentheses=x−3

List all of the solutions.

(2x−1)−7=2=x=5

x−3=x−3

7 0

3 years ago

Tammy got a $100 gift card to Media Mart for her birthday. She decides to use her gift card to buy 3 video games that cost $24 e

Tcecarenko [31]

Answer:

£28

Step-by-step explanation:

3games cost 24 each so times them by 3

24×3=72

And it's a 100 gift card Tammy is using do subtract the 72 by 100

100-72=28

so Tammy has £28 left

8 0

2 years ago

D.sqrt(2+x^/2)<br> Solve this question please

lidiya [134]

Answer:

Option a.

Step-by-step explanation:

By looking at the options, we can assume that the function y(x) is something like:

$y = \sqrt{4 + a*x^2}$

$y' = (1/2)*\frac{1}{\sqrt{4 + a*x^2} }*(2*a*x) = \frac{a*x}{\sqrt{4 + a*x^2} }$

such that, y(0) = √4 = 2, as expected.

Now, we want to have:

$y' = \frac{x*y}{2 + x^2}$

replacing y' and y we get:

$\frac{a*x}{\sqrt{4 + a*x^2} } = \frac{x*\sqrt{4 + a*x^2} }{2 + x^2}$

Now we can try to solve this for "a".

$\frac{a*x}{\sqrt{4 + a*x^2} } = \frac{x*\sqrt{4 + a*x^2} }{2 + x^2}$

If we multiply both sides by y(x), we get:

$\frac{a*x}{\sqrt{4 + a*x^2} }*\sqrt{4 + a*x^2} = \frac{x*\sqrt{4 + a*x^2} }{2 + x^2}*\sqrt{4 + a*x^2}$

$a*x = \frac{x*(4 + a*x^2)}{2 + x^2}$

We can remove the x factor in both numerators if we divide both sides by x, so we get:

$a = \frac{4 + a*x^2}{2 + x^2}$

Now we just need to isolate "a"

$a*(2 + x^2) = 4 + a*x^2$

$2*a + a*x^2 = 4 + a*x^2$

Now we can subtract a*x^2 in both sides to get:

$2*a = 4\\a = 4/2 = 2$

Then the solution is:

$y = \sqrt{4 + 2*x^2}$

The correct option is option a.

7 0

2 years ago

Regular price $4 discount 15%

Allushta [10]

The answer would be $3.40

7 0

3 years ago