Answer:
20x-2
Step-by-step explanation:
Eliminate redundant parentheses:
(11+2)+(9−4)
11+2+9−4
Subtract the numbers:
11+2+9−4
11−2+9
Combine like Terms:
11−2+9
20−2
Solution:
20x-2
Solve the real-world situation by using the substitution method. The number of DVDs sold at a store in a month was 935 and the number of DVDs sold decreased by 12 per month. The number of Blu-ray discs sold in the same store in the same month was 517 and the number of Blu-ray discs sold increased by 26 per month. Let d represent the number of discs sold and t represent the time in months. The system of equations lbrace d = 935 − 12t d = 517 + 26t can be used to represent this situation. If this trend continues, how many months will the number of DVDs sold equal the number of Blu-ray discs sold? How many of each is sold in that month? There will be ______ DVDs and Blu-Ray discs sold per month in ______ months.
Answer:
t = 11 months
d = 803
Step-by-step explanation:
d = 935 − 12t
d = 517 + 26t
how many months will the number of DVDs sold equal the number of Blu-ray discs sold
Equate both equations to solve for the number of months
935 − 12t = 517 + 26t
935 - 517 = 26t + 12t
418 = 38t
t = 418 / 38
t = 11 months
How many of each is sold in that month?
d = 935 − 12t
= 935 - 12(11)
= 935 - 132
= 803
d = 517 + 26t
= 517 + 26(11)
= 517 + 286
d = 803
There will be 803 DVDs and Blu-Ray discs sold per month in 803 months.
Which expression is equivalent to 10√5
A. √500
B.√105
C.√50
D.√15
In ABCD, m_B = (5x + 14)°, m_C = (x + 19), and m_D = (2x + 19º
What is the value of x?
Answer:
i dont know if may answer is correct this is may answer 3
PLEASE HELP ITS DUE IN AN HOUR
solve the inequality
5x > 15
Answer:
x > 3
Step-by-step explanation:
5x > 15
Divide both sides by 5;
x > 3
please help me and ill give brainlist
I'm a 6th grader please help with this inequality math question!
I provided a screenshot
Answer:
False
Step-by-step explanation:
7 1/2 minus 1.5 is actually 6. 6 is not smaller than 5, so it makes this false.
what is -12.41 - (-9.95)?
Answer:
-2.46
Step-by-step explanation:
-12.41+9.95=-2.46
Susie's bakery is having a sale on all cookies. The bakery is offering a sale pack of 4 cookies for $2.80. What is the unit price of a cookie within the sale pack?
Answer:
$11.02
Step-by-step explanation:
Im pretty sure this is right, srry if its not.
Please answer this if you can tysm
Answer:
c because you multiply by pie which is 3.14 and that times 10 is 31.4
Answer:
C
Step-by-step explanation:
i think
Sorry bout that, THIS IS THE NEW ONE PLEASE ANSWER
Answer:
Step-by-step explanation:
Putting value of y = 5
4(5)2 - 7(5) - 6
4(25) - 35 - 6
100 - 41
59
What number does x stand for in this equation?
- 7x + 6= 27
A
21
B
2
C-3
D-7
Answer:
c. -3
Step-by-step explanation:
- 7x + 6= 27 [subtract 6 from both sides]
-7x = 21 [divide by -7 to isolate x]
x = -3
Answer:
The answer is C
Pay attention, here's why.
Step-by-step explanation:
Let's solve your equation.
−7x+6=27
Step 1: Subtract 6 from both sides.
−7x+6−6=27−6
−7x=21
Step 2: Divide both sides by -7.
−7x /−7 = 21/ −7
x=-3
A person standing 154 feet from the base of a church observed the angle of elevation to the church's steeple to be 25∘. How tall is the church?
Answer:
71.764 feet
Step-by-step explanation:
See attached the rough sketch for your reference
Step one;
Given data
The angle of elevation= 25°
From the triangular diagram, we can see that the height of the church is the opposite, while the distance of the person from the church is the adjacent
Step two:
Applying SOH CAH TOA
tan∅= opp/adj
tan 25= opp/154
0.466= opp/154
cross multiply
0.466*154= opp
opp= height of church = 71.764 feet
22 students is __% of 50 is 10
Answer: it might be 0.22 or 0.50
Step-by-step explanation:
cause i did 22/100 and 50/100 and got these answer one of them might be right or both of them are wrong. This is what i think so.
This table shows the relationship between the number of Calories Ling burns while running and the number of minutes she runs.
Minutes Calories Burned
25
225
50
450
75
675
100
900
How many calories will Ling burn in 1 minute while running? Enter the answer in the box.
Answer:
9 calories each min
Step-by-step explanation:
225 divided by 25 = 9
9 x 25 = 225
When do you need to flip the inequality sign when solving?
Answer:
When you divide by a negative.
Step-by-step explanation:
Please help me with this math problem if you can. You just say yes or no if it’s a square, rectangle, etc. and then give the reason why
Answer:
rectangle because the diagnals are congruent
Step-by-step explanation:
Which equation is in point-slope form?
A. y= 2.4 + 2.50
B. y - 4.90 = 2.4 (x - 1)
C. 24x - 10y = -25
D. y + 1 = 24 (x + 4.9)
Answer:
B
Step-by-step explanation:
Which fraction is equivalent to
4
12
19
2
4.
13
18
9
12
what do u mean by the question?????
A 15-pound bag of sugar is being split into containers that hold 7/8 of a pound. How many containers of sugar will the 15-pound bag create
Answer:
hope this help
Step-by-step explanation:
Which expressions are equivalent to -9
x + 1 ? Check all that apply.
-9
* +9(1)
-ox-91
)
- 1
-6x +1
-6x + 9
-6x -9
Answer:
I think this right but I got it right on edge
Step-by-step explanation:
Hope fsdjgsdthisthis this psshelps
Answer:
F : –6x – 9 and B : -9( 2/3x ) - 9(1)Step-by-step explanation:
if you are on a school computer and dont have access to the image.. pls trust me is F and B for Expanding Expressions Assignment in edge... pls give brainlest :3
(NEED DONE QUICKLY) If the domain of a coordinate transformation that is reflected over the y-axis is (-6, 2), (4, 5), (2, -1), what is the range?
Answer:
Step-by-step explanation:
Remark 1
If you are using a mirror on the y axis, then only the x value is changed. The y value remains the same.
For (-6,2), -6 changes into plus 6
The new point is (6,2)
For (4,5), 4 changes to minus 4
The new point is (-4,5)
For (2,-1) the new point is (-2,-1)
Remark 2
But none of those are the answer you want. What you want is what happens to the y value? The answer is it remains the same. The y value is the range. So the answer goes from (-1 to 5) just as it did before.
solve this for me 15x+82= 20x +12
Answer:
here
Step-by-step explanation:
15x-20x= -82+12=>
=> - 5x= -70=>
= x= 14
Simplify the expression.
7x2 + 3 - 5(x2 - 4)
2x2-17
2x2-1
2x2 + 23
25x2
Answer:
1. 14+3-5(-2)= 17+10=27
2. 14-17= -3
3. 4-1=3
4. 4+23=27
5. 50
15) In a basketball game, Reggie made 11 field goals (shots). Each of the field goals were worth either 2 or 3 points, and Reggie scored a total of 25 points from field goals.
Part A: Let x represent the number of 2-point field goals and y represent the number of 3-point field goals. Write a system of equations in terms of x and y to model the situation.
Part B: Using any method, find how many 2-point and 3-point field goals Reggie made in the game.
the answer would 2.35 bc or thw way its written
Step-by-step explanation:
its wrong dont put it
In 1986 the average price of a gallon of gasoline was $0.94 cents. In 2007 the average price of a gallon of gasoline was $2.77. Find the percent of increase and round the nearest tenth.
Its 66% right?
Answer:
RIGHT
Step-by-step explanation:
Michael had $150 in the bank yesterday. Then, Michael bought an expensive designer jacket for $180, but
didn't realize that he overdrew from his bank. His account balance was negative now and he was in debt!
What is the absolute value of his new account balance?
Answer:
he now owes $30 so negative $30
Step-by-step explanation:
Please help me find an equation for this
Answer:
The equation that represents this situation is x + 3x + (x - 4) + 2(x - 4) = 72, where x is Erik's age
Step-by-step explanation:
Let us solve the question
Assume that Erik is x years old
∵ Erik is x years old
∵ Erik is [tex]\frac{1}{3}[/tex] as old as Dawn
→ That means x = [tex]\frac{1}{3}[/tex] Dawn
∴ x = [tex]\frac{1}{3}[/tex] Dawn
→ Multiply both sides by 3
∴ 3x = Dawn
∴ Dawn is 3x years old
∵ Jiro is 4 years younger than Erik
→ That means Jiro = x - 4
∴ Jiro is (x - 4) years old
∵ Alita is 2 times as old as Jiro
→ That means Alita = 2 × (x - 4)
∴ Alita = 2 × (x - 4)
∴ Alita is 2(x - 4) years old
∵ The sum of all their ages is 72
→ That means add their ages and equate the sum by 72
∴ Erike's age + Dawn's age + Jiro's age + Alita's age = 72
∴ x + 3x + (x - 4) + 2(x - 4) = 72
The equation that represents this situation is x + 3x + (x - 4) + 2(x - 4) = 72, where x is Erik's age
How do you graph the function y=1/3x + 12?
You don't have to graph I just wanna know how.
Answer:
Step-by-step explanation:
Well you already known 12 is the y-intercpet.
You go up 1 and go right 3 times and you start to repeat
which is called rise over run.
Which will look something like this:
what operation do you use when you are given the scale factor?
Answer: Multiply or Divide
Step-by-step explanation: You can multiply or divide by the cube of the scale factor. To decide if you should multiply or divide, you should consider the value of the scale factor and if you are going from a larger to a smaller figure, or a smaller to a larger.
What is 8 + 9 + -10 - 3x simplified?
Answer:
7-3x
Step-by-step explanation:
8+9=17
17-10=7
7-3x