Answer:
-8ab-6+26
Step-by-step explanation:
-2(4ab+3-4c)
-2(4ab) = -8ab
-2(3) = -6
-2(-4c)= 2c
Combine:
-8ab-6+26
Multiply 6/13 and 7/22 in simplest form
Answer:
21/143
Step-by-step explanation:
If it was simplified into a decimal it would be .146853
Solve – 2v(v + 1) = 0.
v=
V=
Anna is given the equation 5 + 3x = 3x + 5
The replacement set is {1, 2, 3, 4}
Anna says the solution is {2}, but the teacher marked her problem incorrect. Explain what the answer should be and why. Why do you think this is?
Answer:
There are infinite possibilities for x
Step-by-step explanation:
5 + 3x = 3x + 5
-5 -5
3x = 3x
÷3 ÷3
x = x
Therefore, you can put any replacement to x, and the equation would be true.
Help Help will mark you BRAIN LIST
Answer:
the answer is 6
Step-by-step explanation:
yes u are suppose to simplify
What is the equation of a line that is parallel to the y-axis and goes through the point (6,-1) Plsss help
Cookies are sold in the lunchroom for $1.50. Ana wants to buy cookies for a
group of her friends. If she has $20, which inequality can be solved to show the
The larger of two numbers is twelve more than the twice smaller number. The sum of the numbers is 42. Find the two numbers . Please set up a , set up the equation , and then solve the equation .
Answer:
The smaller number: a = 10
The larger number is 32
Step-by-step explanation:
a - the smaller number
2a - twice the smaller number
2a+12 - twelve more than the twice smaller number (the larger number)
a + 2a+12 - the sum of the numbers
a + 2a+12 = 42
-12 -12
3a = 30
÷3 ÷3
a = 10
2a+12 = 2×10+12 = 20+12 = 32
Check: 10+32=42
NO ONE EVER HELPS ME , PLEASE HELP ME I NEED HELP!
If A=1/2 h (b1 +b2) is the formula for the area of a trapezoid, find the height of the trapezoid that has an area of 78 in ^2 and base lengths 5 in and 8 in.
Answer:
A is the answer
12 in
first substitute the variables
then 78=1/2h(5 + 8)
this makes it an equation
add similar terms which equals to
78=1/2xhx13
then divide both sides by 13
6=1/2xh
lastly divide both sides by 1/2
12=h
Step-by-step explanation:
proof
A=1/2x12(5 + 8) then
A=1/2x12x13 then
A=6x13 then
A= 78in^2
Describe the process you used to find the equation of a line through two
points. Have you learned any tricks or shortcuts when doing this? Explain
if you have.
Answer:
Explanation at the bottom
Step-by-step explanation:
To find the slope with the 2 points use this ---> [tex]\frac{y2 - y1}{x2 - x1}[/tex] Ex: Points (9, 3) (6, 12) --> write it this way [tex]\frac{12 - 3}{6 - 9}[/tex] = [tex]\frac{9}{-3}[/tex] = -3 so -3 would be the slope of that line.
Then to find the y- intercept use the slope and the numbers from one of the points like this ----> y = mx + b we are looking for b.
(plugging in the first point) (using the point (9,3))
3 = -3(9) + b
3 = -27 + b (add 27 on both sides)
30 = b (that's your y- intercept)
(Full equation is)
y = -3x + 30
If you need further explanation just comment!!
How do u show that these 2 lines are parallel
L is y=3x-2
L*2 is 3y-9x+5=0
Answer:
If two lines are parallel, then they have the same gradient.
Step-by-step explanation:
L is y=3x-2
L*2 is 3y-9x+5=0
The gradient for the first equation is 3
We need to rearrange the second equation and see if it has the same gradient as the first equation.
L*2 is 3y-9x+5=0
3y = 9x - 5
L*2 y = 3x - 5/3
As you can see, once you rearrange and simplify the equation, the second line has the same gradient as the first equation.
So that means these two lines are parallel
It took a pet store 7 weeks to sell 56 cats. What is the rate sold per week?
Answer:
About 8 cats were sold a week, so the rate sold per week: 8 ^‿^
Billy and Tommy went to the movies. They are going to combine their money for snacks. Popcorn costs $8 and a box of candy costs $1.50 each. They each want their own popcorn. They spent the rest of the money on candy. If the total cost was $25.00, how many boxes of candy did they buy? Create a algebraic equation and solve for the number of candy boxes.
Answer:
6 candy boxes
Step-by-step explanation:
Since they both bought their own popcorn that means they both spent $8 on popcorn making that a total of $16. Therefore we now only need to find one variable which is the number of candy boxes that they bought in order to reach the $25 total that they spent. This variable can be represented as x in the following algebraic equation.
(2*8) + 1.50x = 25
16 + 1.50x = 25 ... subtract 16 from both sides
1.50x = 9 ... divide both sides by 1.50
x = 6
Finally, we can see that Billy and Tommy bought a total of 6 candy boxes.
if x reprents a number then write an expression for 7 more than one half the number
Answer:
the answer is 7+(x÷2) im pretty sure but i haven't done those in a while.
What should be the first step to solve the equation? 2x + 9(x - 1) = 8(2x + 2) - 5
Combine like terms on each side of the equation.
Use the distributive property on each side of the equation.
Use the subtraction property of equality to subtract 5 from each side of the equation.
Use the addition property of equality to add 2x to each side of the equation.
Step-by-step explanation:
the answer is b
Answer: The answer is B, use the distributive property on each side of the equation.
Jen drives due south for 12 km. She then drives due west for 6 km and then continues south again for 3 km. How far to the nearest km is Jen from her starting point?
PLZ help. The first correct answer gets brainliest!
Answer:
I
Step-by-step explanation:
you start in (0,3) than moved one up and two to the side and you and up with (2,4) = i
Haley got a 93% on her first math test and an 86% on her second test. What is her percent decrease from Test 1 to Test 2 to the nearest tenth?
Enter the correct answer in the box.
Answer:
7.5?
Step-by-step explanation:
Guessing!!! hope it's correct,
Because
Percent Decrease = Percentage Decrease=Starting Value−Final Value|Starting Value|×100
If Haley got a 93% on her first math test and an 86% on her second test. Her percent decrease from Test 1 to Test 2 to the nearest tenth will be 7.5%
Using this formula
Percentage Decrease=Starting percentage−Final percentage÷ Starting percentage×100
Where:
Starting percentage=93%
Final percentage=86%
Let plug in the formula
Percentage Decrease=93%-86%÷93%×100
Percentage Decrease=7%÷86%×100
Percentage Decrease=7.5%
Inconclusion if Haley got a 93% on her first math test and an 86% on her second test. Her percent decrease from Test 1 to Test 2 to the nearest tenth will be 7.5%
Learn more here:
https://brainly.com/question/15462811
On a test of 80 problems, Bill got 75% of the problems correct.
How many did he get correct?
A. 75
B. 60
C. 50
D. 40
E. 30
Answer:
60 problems correct so b is correct
Help!
Solve the following proportion for u.
u 5
— = —
10 11
Round your answer to the nearest tenth.
u = ___
Will mark as brainliest if you help out (:
i need help with this question, im just confused
Answer:
See below
Step-by-step explanation:
Given triangle JKL
The Δ JKL is isoscelesSegment MK is bisector of angle JKLa) Perpendicular segments are
KM and JLb) Equal angles are
∠KJL = ∠KLJ∠JKM = ∠LKM∠JMK = ∠LMK = 90°A grocery store owner is planning a display by stacking cans of soup in a pyramid. The top row of the stack will have 1 can, the row underneath it will have 3 cans, the row underneath it will have 5 cans, and so on. If the owner wants the display to have a total of 12 rows, then how many cans will he need? Show your work. Explain how you know your answer is correct.
Answer:
144 cans
Step-by-step explanation:
Number of cans in the top row = 1
Number of cans in the second row = 3
Number of cans in the third row = 5
Here, the sequence obtained is [tex]1,3,5,...[/tex]
This forms an arithmetic progression with common difference as [tex]3-1=5-3=2[/tex]
Let d denotes the common difference and n denotes number of terms.
[tex]S_n=\frac{n}{2}[2a+(n-1)d][/tex]
Here, [tex]S_n[/tex] denotes sum of n terms.
Put [tex]a=1,d=2,n=12[/tex]
[tex]S_{12}=\frac{12}{2}[2(1)+(12-1)2]\\=6[2+(11)2]\\=6(2+22)\\=6(24)\\=144[/tex]
Solve
3x - (x - 4) = 18
Answer:
7
Step-by-step explanation:
Distribute
3x-x+4=18
Combine like terms
2x+4=18
Subtract 4 on both sides
2x=14
Divide 2 on both sides
X=7
Answer:
x = 7
Step-by-step explanation:
3x - (x - 4) = 18 =
3x - x + 4 = 18 =
2x + 4 = 18 =
2x + 4 - 4 = 18 - 4
2x = 14
x = 7
Games at the carnival cost $4 each. The prizes awarded to winners cost $175.50. How many games must be played to make at least $60? Write, solve and graph the inequality.
Answer:
15
Step-by-step explanation:
Find the equation of the linear function represented by the table below in slope-
intercept form.
x
o
1
2
3
4
y
8
16
24
32 40
Answer: y =
Submit Answer
Answer:(5,48)
Step-by-step explanation:
m22 is (31x - 4)º and m27 is (29x + 4).
a
1 2
34
56
7 8
What is m 23?
Answer:
120
Step-by-step explanation:
31x-4 = 29x+4
2x=8
x=4
31(4)-4 = 120
What is the midpoint of -5.8 and -3.5 on a number line??!
Answer:
-4.65
Step-by-step explanation:
5.8-3.5=2.3
2.3 divided by 2=1.15
3.5+1.15=4.65
Answer: -4.65
Round 169,750 to the nearest hundred thousand
Answer:
200,000
Step-by-step explanation:
If t = 10m + 40 models this scenario,
t = total cost;
m = number of months;
Which of the following statements is true?
O A. The total cost will increase by $40 for every 10 months that pass.
B. The total cost will increase by $10 for every 40 months that pass.
C. The total cost will increase by $10 for every month that passes.
D. The total cost will increase by $40 for every month that passes.
slope intercept of (1,1) and (0,7)
Answer:
[tex]\boxed {m = -6}[/tex]
Step-by-step explanation:
Use the Slope Formula to help you determine the slope of the following two points:
[tex]m = \frac{y_{2} - y_{1}}{x_{2} - x_{1}}[/tex]
(Where [tex](x_{1}, y_{1})[/tex] is the first point and [tex](x_{2}, y_{2})[/tex] is the second point)
-Apply both points onto that formula:
[tex](x_{1}, y_{1}) = (1, 1)[/tex]
[tex](x_{2}, y_{2}) = (0, 7)[/tex]
[tex]m = \frac{7 - 1}{0 - 1}[/tex]
-Solve:
[tex]m = \frac{7 - 1}{0 - 1}[/tex]
[tex]m = \frac{6}{-1}[/tex]
[tex]\boxed {m = -6}[/tex]
a sequence of transformations maps angleABC to A'B'C'. the sequence of transformations that maps ABC to A'B'C' is a reflection across the ____ followed by a transformation ____
first drop down
y-axis
x-axis
line y=x
line y=-x
second drop down
4 units to the right and 10 units up
8 units to the right and 4 units up
10 units to the right and 2 units up
10 units to the right and 4 units up