Mathematics Middle School

please answer these 5 questions ill give brainliest and give more points after you answer

Please Answer These 5 Questions Ill Give Brainliest And Give More Points After You Answer
Please Answer These 5 Questions Ill Give Brainliest And Give More Points After You Answer
Please Answer These 5 Questions Ill Give Brainliest And Give More Points After You Answer

Answers

Answer 1

Answer:

go to the skating rink

Step-by-step explanation:

if multiply 5x 7 you get 35

If you add 35+15 you get 50 which is the amount of money you have. So if you chose the bowling ally you could bring 7 friends

but is you multiply 3x10 that equals 30

Add that by 20 and you get 50

let me know if its right

Related Questions

You earn $60 for mowing 5 lawns. How much do you earn for mowing 15 lawns? Complete the ratio table to help you solve the problem. Write your answer in a complete sentence.

Answers

You earn $180 for mowing 15 lawns.
180 because 60 divided by 5 is 12 and 12x15=180 :) hope this helped

help please, I need to know the ordered pair for the origin!

Answers

The answer is (0,0) everything else is correct

Which of expressions illustrates the associative property?

ab + bc

a ( b + c ) = ab + bc

a ( b + c ) = (a + b ) + c

a + b + c = c + b + a

Answers

Answer:

c)   a ( b + c ) = (a + b ) + c

Step-by-step explanation:

The associative property is a property of some binary operations, which means that rearranging the parentheses in an expression will not change the result. In propositional logic, associativity is a valid rule of replacement for expressions in logical proofs.

7(x+6)
Distributive Property
will mark brainliest

Answers

7 because is it I do it and I know is correct

Answer:

7x + 42

Step-by-step explanation:

7(x + 6)

7x + 42

good luck, i hope this helps :)

A triangle is formed by intersecting lines.

What is the measure of angle x?

Answers

The sum of all angles of a triangle = 180.
So 180-90 (right angle) - 51 (other known angle) = 39
the measure of angle x would be 39°
triangles only go up to 180° and that triangle already has a 90° right angle and a 51° acute angle. so the answer is 39°

SHOW WORK

OK PLS HELP ME AND MY FRIEND REALLY NEED IT THE FIRST PERSON THAT ANSEWRS WILL GET BRAINLEST AND I WILL LITTERLY LOVE YOU AND WORSHIP YOU NO JOKE

Answers

Answer:

b=-3

Step-by-step explanation:

9+3=-4b

12=-4b

b=12/-4

b=-3

9=-3-4b
+3 to both sides
12=-4b
b=-3

I will give brainliest to whoever helps me with this question. Also, if you could please explain to me how you solved it I would appreciate it! (this is Pythagorean Theorem if your wondering).

Answers

Answer:

35 squared plus x squared equals 78 Squared

which makes your answer

69.7

Step-by-step explanation:

Answer:

35 square + x square 78 square

= 69.7

Step-by-step explanation:

PLZZZZ HELP WILL GIVE BRAINS

Answers

Answer:

209 dollars

Step-by-step explanation:

i did the math but am probably incorrect

(209) I think that’s the answer
:))

Which equation could be used to solve problems involving the relationships between the angles?
A) 90+(8a+9)=(11+2a)
B) 90-(8a+9)=(11+2a)
C) (11+2a)-90=(8a+9)
D) (8a+9)-(11+2a)=90

Answers

Answer:

B

Step-by-step explanation:

What is this shape called?

Answers

Answer:

This is a triangular prism

Step-by-step explanation:

Which choice could include the degrees of the angles in a quadrilateral?
A: 43,54,127,136
B: 25,35,63,57
C: 80,90,100,110
D: 50,91,101,128​

Answers

the answer is A! it equals 360°!
The answer is yes A it equals to 360

I need this quickly they both need expressions I think so

(will mark brainlist if right)

Answers

Answer:

1 - 155 +27n

2- 2x+15=33

Step-by-step explanation:

hope this helps

The spinner below is spun twice. What is the probability that the it will land on a white section and then a striped section?

Answers

5/8 or 65%


...............
It is a 4 in 8 chance that the spinner will land on the white section and a 1 in 8 chance that the spinner will land on the striped section. Since there are more white sections than any other it is more likely for the spinner to land on the plain white.

is this expression fully simplified? Explain
4x2 + 10 - x - 6x3

Answers

Answer:

-x

Step-by-step explanation:

no it’s not. fully simplified would be -x

pls answer quick rjwejriwejriwekr

Answers

Answer: $181.48 O_O

Step-by-step explanation: i know that stuff

Answer:

$530.48

Step-by-step explanation:

i can answer now yay

How do you find the equation of each function? Function A is f(x)=3x^2 and Function C is f(x)=18x-16. How do you get those? And then how do you get the equation for Function B? Thanks!

Answers

Answer:

[tex]f(x) = 3^x[/tex] --- Function A

[tex]f(x) = x^2 - 5[/tex] --- Function B

[tex]f(x) = 18x -6[/tex] --- Function C

Step-by-step explanation:

Solving (a): Equation of Function A

An exponential equation is represented as:

[tex]y = ab^x[/tex]

From the graph of function A,

[tex]x = 0\ when\ y = 1[/tex]

[tex]x = 1\ when\ y = 3[/tex]

For: [tex]x = 0\ when\ y = 1[/tex]

[tex]y = ab^x[/tex] becomes

[tex]1 = ab^0[/tex]

[tex]1 = a[/tex]

[tex]a =1[/tex]

For: [tex]x = 1\ when\ y = 3[/tex]

[tex]y = ab^x[/tex] becomes

[tex]3 = a*b^1[/tex]

[tex]3 = a*b[/tex]

Substitute 1 for a

[tex]3 = 1*b[/tex]

[tex]3 = b[/tex]

[tex]b = 3[/tex]

[tex]y = ab^x[/tex] becomes

[tex]y = 1*3^x[/tex]

[tex]y = 3^x[/tex]

Replace y with f(x)

[tex]f(x) = 3^x[/tex]

Solving (b): Equation of Function B

A quadratic equation is represented as:

[tex]y = ax^2 + bx + c[/tex]

From the table of function B,

[tex]x = 3\ when\ y =4[/tex]

[tex]x = 5\ when\ y =20[/tex]

[tex]x = 6\ when\ y =31[/tex]

For: [tex]x = 3\ when\ y =4[/tex]

[tex]y = ax^2 + bx + c[/tex] becomes

[tex]4 = a*3^2 + b*3 + c[/tex]

[tex]4 = a*9 + 3b + c[/tex]

[tex]4 = 9a + 3b + c[/tex]

For [tex]x = 5\ when\ y =20[/tex]

[tex]y = ax^2 + bx + c[/tex] becomes

[tex]20 = a*5^2 + b*5 + c[/tex]

[tex]20 = a*25 + b*5 + c[/tex]

[tex]20 = 25a + 5b + c[/tex]

For [tex]x = 6\ when\ y =31[/tex]

[tex]y = ax^2 + bx + c[/tex] becomes

[tex]31 = a*6^2 + b*6 + c[/tex]

[tex]31 = a*36 + b*6 + c[/tex]

[tex]31 = 36a + 6b + c[/tex]

So, we solve for a, b and c in:

[tex]4 = 9a + 3b + c[/tex]

[tex]20 = 25a + 5b + c[/tex]

[tex]31 = 36a + 6b + c[/tex]

Make c the subject in [tex]4 = 9a + 3b + c[/tex]

[tex]c = 4 - 9a - 3b[/tex]

Substitute [tex]c = 4 - 9a - 3b[/tex] in [tex]20 = 25a + 5b + c[/tex] and [tex]31 = 36a + 6b + c[/tex]

[tex]20 = 25a + 5b + c[/tex] becomes

[tex]20 = 25a + 5b + 4-9a-3b[/tex]

Collect Like Terms

[tex]-4+20 = 25a -9a+ 5b -3b[/tex]

[tex]16 = 16a+ 2b[/tex]

Divide through by 2

[tex]8 = 8a + b[/tex]

[tex]c = 4 - 9a - 3b[/tex]

[tex]31 = 36a + 6b + c[/tex] becomes

[tex]31 = 36a + 6b + 4 - 9a - 3b[/tex]

Collect Like Terms

[tex]-4+31 = 36a - 9a+ 6b - 3b[/tex]

[tex]27 = 27a+ 3b[/tex]

Divide through by 3

[tex]9 = 9a + b[/tex]

Solve for a and b in: [tex]8 = 8a + b[/tex] and [tex]9 = 9a + b[/tex]

Subtract both equations:

[tex]8 - 9 = 8a - 9a + b - b[/tex]

[tex]8 - 9 = 8a - 9a[/tex]

[tex]-1 = -a[/tex]

Divide both sides by -1

[tex]1 = a[/tex]

[tex]a = 1[/tex]

Substitute 1 for a in [tex]9 = 9a + b[/tex]

[tex]9 = 9*1 + b[/tex]

[tex]9 = 9 +b[/tex]

Subtract 9 from both sides

[tex]9-9=9-9+b[/tex]

[tex]0=b[/tex]

[tex]b = 0[/tex]

Substitute [tex]b = 0[/tex] and [tex]a = 1[/tex] in [tex]c = 4 - 9a - 3b[/tex]

[tex]c = 4 - 9*1-3*0[/tex]

[tex]c = 4 - 9-0[/tex]

[tex]c = -5[/tex]

So, the equation is:

[tex]y = ax^2 + bx + c[/tex]

[tex]y=1*x^2 +0*x-5[/tex]

[tex]y=x^2 -5[/tex]

Replace y with f(x)

[tex]f(x) = x^2 - 5[/tex]

Solving (c): Equation of Function C

This is calculated using:

[tex]f(x) =a + (x -1)d[/tex]

Where

[tex]a = 12[/tex] -- the first term

d = the difference between successive terms

[tex]d = 30 -12 = 48-30 = 66 -48[/tex]

[tex]d =18[/tex]

So, we have:

[tex]f(x) =a + (x -1)d[/tex]

[tex]f(x) = 12 + (x - 1)*18[/tex]

Open bracket

[tex]f(x) = 12 + 18x - 18[/tex]

Collect Like Terms

[tex]f(x) = 18x - 18+12[/tex]

[tex]f(x) = 18x -6[/tex]

Explain the parts of an algebraic expression and what algebraic expressions can represent.

Plzz helppp!!!!!!!!!!!!!

Answers

Algebraic expressions are combinations of variables , numbers, and at least one arithmetic operation. For example, 2x+4y−9 is an algebraic expression. Term: Each expression is made up of terms. A term can be a signed number, a variable, or a constant multiplied by a variable or variables.
an equation solving for an unknown value

what are facts about cross-sections (math)?

Answers

Answer: A cross section is the shape we get when cutting straight through an object.

Step-by-step explanation:

The shape we get when cutting straight through an object.

Three friends are buying seashells at the gift shop on the beach. Melanie buys 2 seashells for​ $0.80. Rosi buys 5 seashells for​ $2.00. Carlos buys 4 seashells for​ $1.60. Use a graph to determine whether the number of seashells and the cost have a proportional relationship. If​ so, what is the constant of proportionality and what does it​ mean?

Answers

Answer:

17.08

Step-by-step explanation:

A store buys a jacket for $60. The markup rate is $15. What is the percent of markup?

Answers

Answer:I think it’s 33.33%? Not 100% sure but I hope it helps!

Step-by-step explanation:

A survey on planet rew found that 80% preferred tott juice to all other juices. if 32 beings preferred tott juice, how many beings were surveyed altogether?

Answers

I think it is 38 people total. For everyone
I think...

First right equals brainliest, Pls dont answer for the points this is serious. I just need this and 3 more which I will ask later. Anyway I am making this worth more points because I need help:)

Answers

I can't see the picture, can you please explain the problem in the comment bar below this so can edit my answer to help?

You can’t see it because you can only see pictures on the app

Please help! Thank youuuuu~

Answers

Look up "Everything You Need To Know About Math In One Big Fat Notebook pdf." It's the best thing I've ever been given, I have it with me in math class all the time and I've aced every test. I have it with me right now and it has everything I've ever been taught about math in it so it might help you.

The equation for the area of a circle is given.

A=πr2

If the radius (r) of the circle is 3, what is the area in terms of π?

Answers

9 and then put a pi symbol. You do 3squared since it’s the radius and that’s 9. Then since it’s wanted in terms of pi that’s it. 9pi

Find the area of the polygon, the vertices are (1,4) (2,1) (4,1) (5,4)

Answers

Answer:

Hello

Step-by-step explanation:

Four students set up a lemonade stand. At the end of the day, their profit is $17.52. How much money do they each have when the profit is split equally?

Answers

So each student gets $4.38 each when the profit is split equally

Answer:

$6

Step-by-step explanation:

What kind of symmetry does this figure have?
point
line
both line and point
neither

Answers

Answer:

line and point

Step-by-step explanation:

The kind of symmetry the figure given above posses is a line and point symmetry.

What is point symmetry?

A point Symmetry also known as origin symmetry is a Symmetry which occurs when every part of an object has a matching part. That is, the same distance from the central point but in the opposite direction.

Given that;

The objects looks the same when viewed from opposite directions.

We know that;

A line of symmetry is a line that cuts a shape exactly into two equal half. That is, if you fold the shape along the line, both halves would match exactly.

Therefore, the figure given above has both point and line Symmetry.

Learn more about line and point symmetry:

brainly.com/question/1553710

#SPJ3

if a van traveled 150 miles in 3 hours, how many miles could the van travel in 6 hours?

Answers

Answer:

300 because if he traveled 150 in 3 to find six just multiply by 2

Answer:

The van traveled 300 miles in 6 hours.

Step-by-step explanation:

150 divided by 3 = 50

So each hour the van traveled 50 miles.

50 x 6 = 300

PLS HELP ME!! I'm having a brain freeze at the moment-

Answers

Answer:

I'm sorry but I was doing it in my notebook and no and it came out a proper answer and well I'm not going to answer something that this bad I don't like to look bad the truth I thought was going to be easier but I couldn't do it I hope that another volunteer arrives and helps you and give you a better answer I will tell you what was my answer I think is not going to be bad 45.90

Step-by-step explanation:

halp me plez I dont wanna fail ( MUST BE A EXPRESSION)

Answers

Answer:

2x+15=33

Step-by-step explanation:

Let n be the number of days he has been doing sit ups, not counting the first day. Since he does 2 more sit-ups for each day, then the number of additional sit-ups is 2n.

Since he started doing  15 sit-ups on the first day, the total number of sit-ups

after x days would be 2n+15.

Since he did a total of 33 sit ups today, then 2n+15=33

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