Work out the value of 4(2x+3y) when x=8 and y=-3

Answers

Answer 1

Answer: 4(2 x 8 + 3 x (-3))
4(16 + (-9))
4(7)
=28

Answer 2

Answer:

Final answer:

To find the value of 4(2x+3y) when x=8 and y=-3, substitute the given values into the expression. Simplify the expression and solve for the value.

Explanation:

To find the value of 4(2x+3y) when x=8 and y=-3, we substitute the given values into the expression. So, we have:

4(2(8)+3(-3))

Simplifying, we get:

4(16-9)

4(7)

Finally, we multiply 4 by 7 to get the answer: 28

Learn more about Evaluating algebraic expressions here:

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I nEeD hElP pLeAsE :)
What is the answer please help

nicole ordered a volleyball for 9.75 a net 29.99 and knee pads for 15.00. Nicole's mother said she will pay for the order on her credit card if Nicole gave her the money Nicole gave her mother $40 her mother also applied the money that she owed Nicole for babysitting Nicole's mother then gave her back $5.26 how much did Nicole's mother owe her for babysitting

Answers

To solve a kind of question like this and to have a better understanding while solving it. It is pertinent to list out the parameters given:

List of Items bought by Nicole:

Volleyball = $9.75
Net = $29.99
Knee pads = $15.00

If Nicole gave her mother the money $40 for babysitting, and:

Her mother paid back $5.26 out of it.

Then, the total amount of money Nicole's mother owed Nicole can be calculated by adding the items Nicole bought with the amount her mother paid her back, then we will subtract the total amount from the money Nicole gave her mother for babysitting.

Mathematically, we have:

= $(9.75 + 29.99 + 15+ 5.26) - $(40)

= $60 - $40

= $20

Therefore, we can conclude that the amount of Money Nicole's mother owed Nicole for babysitting is $20

Learn more about arithmetic operations here:

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To figure this out just add:

9.75 + 29.99 + 15 + 5.26 = $60 Since this is $20 more than Nicole gave her mom that means she made $20 baby sitting. There's your answer!

Hello:) anyone able to help with 7? Thank you!

Answers

Answer:

Angle of depression from C to T measures approximately $20.52^o$

Step-by-step explanation:

To start, we use triangle DTA to find the length of the side AT, making use of the tangent function:

$tan(23^o)=(AT)/(28\,m) \nAT=tan(23^o)\,* 28\,m\nAT=11.89\,m$

Now we need to find the size of the rectangular land diagonal:

$diagonal=√(28^2+15^2)=31.76\,m$

With this information, we can now find the measure of angle "C" (depression angle from C to T), using the triangle ACT:

$tan(C)=(opposite)/(adjacent) \ntan(C)=(11.89)/(31.76)\nC=arctan((11.89)/(31.76))\nC=20.52^o$

Answer the riddle I am a geometric solid I have two surfaces one of my surfaces is formed by a circle the other surface is curved what am I

Answers

I belive that it is a cone, because it has two surfaces, and matches the other clues as well :)

You are.... A cone,trapezoid, or cylinder

Hope this Helps!

GuYS PLEASE HELP I WILL MARK AS BRAINIEST IF YOU EXPLAIN WELL. ANYWAYS, SOLVE EACH EQUATION BY FACTORING. R^2+9R+8=0 SO MY QUESTION IS HOW DO I DO THIS PLEASE HELP

Answers

To factor the equation, you can start by note that leading coefficient is 1 so factor would looks like (R + ?)(R + ?) = 0 because 1*1 = 1

And we know that 1*8 = 8 and 1 + 8 = 9 so then we have (R + 8)(R + 1)=0

Now we can split factors into two equations: R+8 = 0 or R+1 = 0.

Solve both equation and we get R = -8 or R = -1

I will try my best to assist you with your problem.

We need to factor the equation, so you must start by note that leading coefficient is 1 so factor would looks like (R + ?)(R + ?) = 0 because 1*1 = 1

And we know that 1*8 = 8 and 1 + 8 = 9 so then we have (R + 8)(R + 1)=0

Now we can split factors into two equations: either R+8 = 0 R+1 = 0.

Solve both equation and we get R = -8 or R = -1

Hope I helped!

Good Luck!

⛈

Read more on Brainly.com - brainly.com/question/1400054#readmore

Please answer this below! Brainliest will be given!

Answers

Answer:

here ya go :)

Step-by-step explanation:

small size= 0.43

medium size=0.44

large size= 0.4

Answer:

Step-by-step explanation:

~PRE AP ALGEBRA!~- Simplify each expression:

1. 5 (8) (10)
2. 1/2 (6) (12)
3. 1/3 (3) (12)
4. 1/2 ( $8^(2)$ ) (4)
5. 1/4 ( $10^(2)$ ) (15)
6. 1/3 ( $9^(2)$ ) (6)

Answers

1. 5 (8) (10) = 5 (80) = 400

2. 1/2 (6) (12) = (3) (12) = 36

3. 1/3 (3) (12) = (1) (12) = 12

4. 1/2 (8²) (4) = (8²) (2) = (64) (2) = 128

5. 1/4 (10²) (15) = 1/4 (100) (15) = (25) (15) = 375

6. 1/3 (9²) (6) = (9²) (2) = (81) (2) = 162

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