HELP ME I ONLY HAVE 15 MINUTES

the sum of 3 numbers is 9. tge second number is 3 less than the first.the thirf number is four morethan twice the first. find ea

borishaifa [10]

<h3><u>The value of the first number, x, is eual to 2.</u></h3><h3><u>The value of the second number, y, is equal to -1.</u></h3><h3><u>The value of the third number, z, is equal to 8.</u></h3>

x + y + z = 9

y = x - 3

z = 2x + 4

Because we have values for y and z, we can find the exact value of x, which we can use to find the exact values for the other variables.

x + x - 3 + 2x + 4 = 9

<em><u>Combine like terms.</u></em>

4x + 1 = 9

<em><u>Subtract 1 from both sides.</u></em>

4x = 8

<em><u>Divide both sides by 4.</u></em>

x = 2

Now that we have a value for x, we can plug this value in to each other x value to solve for y and z.

y = 2 - 3

y = -1

z = 2(2) + 4

z = 8

7 0

4 years ago

Read 2 more answers

According to the U.S. Geological Survey, there are over 300,000,000 cubic miles of water on the planet. How this number represen

Darya [45]

Answer:

3.00x10^8

Step-by-step explanation:

So you want to make sure the number before the x10^ is beween 10 and 0 not including 10 and 0. So 1.00-9.99.

Move the demcil place up in 300,000,000 till your first number is between 1 and 9.99.

Then count how many places you moved it up, in this case 8

Add the amount of times you moved up to the x10^(in this space).

you answer is now 3.00 plus the x10^8

3.00x10^8

4 0

3 years ago

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Anita put $3,000 in a savings account. The account earns an annual interest rate of 3.5%. How much interest will Anita earn afte

jek_recluse [69]

105 hope that helps and always have a great day!

8 0

4 years ago

From a point on the ground that is 120 feet from the base of a vertical tree, the angle of elevation to the top of the tree is 3

andriy [413]

Answer:

$\boxed {\boxed {\sf 69.28 \ feet}}$

Step-by-step explanation:

Assuming that the tree is perpendicular with the ground, we can use trigonometric ratios to find the height of the tree.

First, let's draw a diagram. From the point on the ground to the base, it is 120 feet and forms a 30 degree angle. We want to find the height of the tree, which is labeled h. (The diagram is attached and not to scale).

Next, recall the ratios.