Answer:
5x + 45
Step-by-step explanation:
Assuming by writing .5 you mean multiplication, since the 5 is being multiplied with everything in the paranthesis, using the distributive property the equation is equal to 5*x + 5*9 or 5x+45.
Find the solution to the system of equations below. 7x+3y=12 and 7x-3y=30
A.(7, 3)
B.(-3, 3)
C.3, -3)
D.(2, -2)
Answer:
C. (3, -3)
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS Equality PropertiesAlgebra I
Solving systems of equations using substitution/eliminationStep-by-step explanation:
Step 1: Define systems
7x + 3y = 12
7x - 3y = 30
Step 2: Solve for x
Eliminate y: 14x = 42Isolate x: x = 3Step 3: Solve for y
Substitute in x: 7(3) + 3y = 12Multiply: 21 + 3y = 12Isolate y term: 3y = -9Isolate y: y = -3And we have our final answer!
Which translation matches the inequality?
x/7.4 ≤ 19.8
A) The difference of a number and 7.4 is less than 19.8.
B) The quotient of a number and 7.4 is at most 19.8.
C) The difference of a number and 7.4 is no more than 19.8.
D) The quotient of a number and 7.4 is at least 19.8.
Please help will give brainliest i need this its due wednesday and there are like 45-50 questions
Answer:
i think its a
Step-by-step explanation:
sorry if im wrong just stressd out. good luck.
Answer:
The anwser is a
Step-by-step explanation:
Because on the red point it 24
John bought 2 video games for $46 from Game Stop. Then, he went online to Amazon and bought 3 video games for $70.50
Which store sells the cheapest video game? Just say the answer for a free brainiest
Answer:
Game stop is selling the cheaper video game.
Step-by-step explanation:
game stop=$23 each game amazon=$23.5 each game.
Answer:Game Stop is cheaper
Step-by-step explanation:
2 videogames cost 46$ 46 x 2 = 92
3 x 70.50 = 211.5
The surf instructor has an initial fee of $12 and charges $8 per hour for lessons, which is represented by the equation y = 8x + 12, where x is the number of hours and y is the total cost. The instructor gives 32 hours of lessons a month to Sandra and 24 hours of lessons a month to Bela. What is the total amount the instructor makes in a month? Sandra: y = 8 (32) + 12. y = 256 + 12. y = 268. The instructor receives 268 dollars a month from Sandra. The instructor makes $ a month.
Answer:
$472
Step-by-step explanation:
I got it right on edge.
Please Help!
Simple interest:
Use formula I=PRT
Find t when
i=$129.6
r=4%
p=$540
Answer:6=t
Step-by-step explanation:
129.6=540*0.04*t
129.6=21.6*t
6=t
Answer:
t=6 or 6=t
Step-by-step explanation:
can someone help me out? :P
Please help me with this. Thank you!
a____
B____
c___
2____
3___
Answer:
i have done these equations before but i cannot make out what the equation is
Step-by-step explanation:
Dan and Alan take turns mowing the grass of a yard that is 2400 square yards in area. Dan takes an hour to mow the whole lawn using his old mower. Alan only takes 40 minutes to mow the whole lawn using his new mower.
As you answer the following questions, don't forget to show your units!
A. How much lawn does Dan mow in a minute?
B. How much lawn does Alan mow in a minute?
B. How many more square yards does Alan mow in a minute than Dan?
Answer:
Step-by-step explanation:
To be able to do the problem 5(10 + 4) mentally, Zack does 50 + 20 instead of 5(14).
Zack is using which of the following properties?
1.) distributive
2.) inverse
3.) associative
4.) commutative
Answer:
1. Distributive
Step-by-step explanation:
This is because you multiply the number outside the parentheses into the numbers inside the parentheses.
Hope it helped.
Answer:
the answer is 1)
Step-by-step explanation:
♀️♂️help me plzssssssss
Answer:
Answer = 22.26
Step-by-step explanation:
53
42
———-
106
2120
————-
2226
Answer = 22.26
Pls help I asked 2 time so far and no one I need help i will mark brainliest
Answer:
x = 33
Step-by-step explanation:
This picture shows a supplementary angle which means:
angle 1 + angle 2 = 180°
In order to solve for x, you need to add both the angles
(2x + 1) + (4x - 19) = 180° start by simplifying this equation by adding like terms
6x - 18 = 180° you can solve this like a regular inequality now, add 18 to 180°
6x = 198 now divide 6 by 162
x = 33
Find the smallest common multiple (PPMC) of 4 and 8:
Answer:
8
Step-by-step explanation:
If f(x) = 8x^3 - 6x^2 - 4x + 5, find the value of f( -2).
Answer: -75
Step-by-step explanation:
Plug in -2 into the equation.
8(-2)^3 - 6(-2)^2 -4 (-2) + 5
Which of the following word pairs correctly completes the sentence below? The _______ energy from the _______ arrives in the form of visible and invisible light.
A. Sun's, Earth
B. Earth's, Sun
C. Moon's, Earth
D. stars', Moon
Answer:
it C
Step-by-step explanation:
Suppose that a bike rents for $4 plus $1.50 per hour. Your rented a bike to ride around Central Park in New York City, you picked up the bike at 11:00 am and returned the bike at 3:00 pm. How much did you bike rental cost?
Answer:
9.5 hours .
Step-by-step explanation:
I think this is the correct answer if not let me know.
Answer:
$22
Step-by-step explanation:
It is four hours from 11 to 3 so you multiply $4 times the 4 hours to get 16 then you multiply 1.50 by four to get 6 add that 6 to the 16 to get 22
4x9.4 in an area model
37.6 but i dunno how to but it into a model im sorry!!!
Answer:
37. but i really dont know
Step-by-step explanation:
Doors for the small cabinet are 12.5 inches long. Doors for the large cabinets are 2.9 times as long as the doors for the small cabinets. How many large doors can be cut from a board that is 11 feet long?
Answer:
36.25
Step-by-step explanation:
A 3-pack of light bulbs costs $3.45. A 4-pack of the same light bulbs costs $4.20.
Which pack has better value?
Answer:
The 4-pack light bulbs
Step-by-step explanation:
Price of a light bulb in 3-pack
= 3.45÷3
= $1.15
Price of a light bulb in 4-pack
= 4.20÷4
= $1.05
Which symbol would make this statement true?
6 __ 8
1. =
2.
4. ≤
5. ≥
Answer:
<
Step-by-step explanation:
because 8 is a higher number than 6
Answer:
4.<
Step-by-step explanation:
8 is greater than 6
Which of the following number lines represents the solution to m/-2 - 7 = -9?
Answer:
Step-by-step explanation:
the answer is a. (the first one)
Number lines are used to represent relationship between numbers at regular intervals
The number line that represents the equation [tex]\frac{m}{-2} - 7 = -9[/tex] is number line (c)
The equation is given as:
[tex]\frac{m}{-2} - 7 = -9[/tex]
Add 7 to both sides of the equation
[tex]\frac{m}{-2} = -2[/tex]
Multiply both sides of the equations by -2
[tex]m = 4[/tex]
This means that, the solution to the equation is [tex]m = 4[/tex]
The number line that represents [tex]m = 4[/tex] is number line (c)
Read more about number lines at:
https://brainly.com/question/24644930
I only know + I don’t know - pls helpp!!
Answer:
x=31
Step-by-step explanation:
Since these angles are on a straight line, they are supplementary (combine to make 180 degrees. Therefore we can set up an equation to find x.
(5x-16)+(x+10)=180
Drop the parentheses.
5x-16+x+10=180
Combine like terms.
6x-6=180
Add 6 to both sides.
6x=186
Divide both sides by 6.
x=31
HTH :)
The perimeter of a square is 80-60y units. Which expression can be used to show the side length of one side of the square?
A. 16(5-4y): Each side measures 5-4y units.
B. 16y(5-4): Each side measures 5-4y units.
C. 4(20-16y): Each side measures 20-16y units.
D. 4y(20-16): Each side measures 20-16.
Maria said that -4n + 3 +9n - 4 is equivalent to 4n. What error did maria likely make?
The error that Maria did was combining all the factors in the algebraic expression without collecting the like terms to a particular side to solve for the variable (n).
What is an Algebraic expression?Algebraic expression involves solving numbers with variables with the use of arithmetic operations e.g.
AdditionSubtractionMultiplicationDivisionClaim:
Maria Said that:
-4n + 3 + 9n - 4 = 4nIf we ignore the like terms and assume all numbers have a variable (n);
Then, we have:
-4n + 3n + 9n - 4n = 4nLearn more about Algebraic expressions here:
https://brainly.com/question/4344214
can someone help me out? :P
9514 1404 393
Answer:
181
Step-by-step explanation:
The tagged deer seem to represent about 17/110 of the population. Since there are 28 deer with tags, the population (p) is estimated to be ...
110/17 = p/28
p = 28(110/17) ≈ 181
There are about 181 deer in the woods.
PLS HELPPPPPP I'M GOING TO FAIL MATH WHO EVER HELPS WITH THIS QUESTION I WILL GIVE A BRAINLIEST!!!!
Three students need to produce a prime factorization of 48. Donna states that the first factors in the tree should be 6 and 8. Larry states that the first factors in the tree should be 4 and 12. Trish states that the initial factors of 48 do not affect the prime factorization. Explain why Trish is correct.
Answer: Trish is correct because she states 48 and the number 48 does not affect the prime factorization
Step-by-step explanation:
Given the equation 11.5 - 3y = -48.5, what are the equivalent equations? Choose all that apply.
Answer: 60-3y=0
-3(y-8.3333)= -48.5
The image shows a right triangle in the coordinate plane. What is the measure of segment DF?
Answer:
10.8 units
Step-by-step explanation:
Answer:
10.8
Step-by-step explanation:
Its True
Broody spent $260 on 4 chairs. To find out how much he spent on each chair, he did the following work in long division. did he do the problem correctly why or why not
Answer:
i think it is C
Step-by-step explanation:
if not than sorry
Answer:
C. Yes, he worked the problem correctly
Step-by-step explanation:
260 / 4 = 65 and he did the work as he was supossed to
4 goes into 26 6 times and 4 goes into 20 5 times which = 65
So he got it right!
Which of the following describes a situation for the inequality: 3w + 9 ≤ 21
A. A girl get $3 for every box of cookies sold plus 9 dollars for trying. She makes either $21 total or just below that amount.
B. A girl get $3 for every box of cookies sold plus nine dollars for trying. She makes either $21 total or more than that amount.
C. Girl scout cookies are good, just pay the girl! (this is not the correct answer.)
D. A girl get $9 for every box of cookies sold plus 3 dollars for trying. She makes either $21 total or just below that amount.
Answer:
B
Step-by-step explanation:
She wouldn't have sold just one box. Seven or more makes much sense.
Answer: The answer would be A. A girl gets $3 for every box of cookies sold plus 9 dollars for trying. She makes either $21 total or just below that amount.
Step-by-step explanation:
w is the box and when a number is beside a letter it is multiplication and then 9 dollars for trying. the < with the underline means that it is the same amount or less.