Answers
-8x+48 + -7x-42
-15x+6
4.) -7(1-3b) + b(8b-6)
-7+21b + 8b²-6b
-7+15b+ 8b²
Hope this helps love :)
Related Questions
What are the solutions to x2 8x 7 = 0? x = –8 and x = –7 x = –7 and x = –1 x = 1 and x = 7 x = 7 and x = 8?
Answers
x² + 8x + 7 = 0
Factorize the left side.
x² + 8x + 7 = (x + 1)(x + 7)
Therefore
(x + 1)(x + 7) = 0
When (x + 1) = 0, obtain x = -1.
When (x + 7) = 0, obtain x = -7.
The solutions are x = -1 and x = -7
Answer: x = -7 and x = -1.
The correct solutions to the given equation are x = 1 and x = 7.
The solutions to the equation x² - 8x + 7 = 0 are x = 1 and x = 7.
To find these solutions, we can factor the quadratic equation by finding two numbers that multiply to 7 (the constant term) and add up to -8 (the coefficient of the x term).
Therefore, the correct solutions to the given equation are x = 1 and x = 7.
Fill in 2 to 10 so every row and column adds up to 18
Answers
7| 8 | 3
9| 4 | 5
Hope this helps love! :)
How to find slope and y intercept 6x-5y=15?
Answers
6x - 5y = 15 ....subtract 6x from both sides
-5y = -6x + 15...divide both sides by -5
(-5/-5)y = (-6/-5)x + (15/-5)...simplify
y = 6/5x - 3
y = mx + b...remember, m is ur slope and b is ur y int
y = (6/5)x + (-3).....ur slope(m) = 6/5 and ur y int (b) = -3
how do you solve this absolute value equation? ∣x−2∣=∣4+x∣
Answers
Remember : Absolute is just the distance from zero.
Ex : l -4 l turns into 4, as it is 4 spaces away from zero on a number line :)
l x - 2 l turns into x + 2
l 4 + x l stays the same.
So, our equation now looks like this :
x + 2 = 4 + x
So, we're basically just trying to get x by itself.
So, subtract 2 from both sides.
x = 4 + x - 2
Then, subtract x from both sides.
x - x = 4 -2
0 = 2
Therefore, there are no solutions to this equation :)
~Hope I helped!~
Factor this polynomial using the GCF: 3xy^2 + 3xy^2 - 3xy
3xy(y + x - 1)
-3xy(y + x + 1)
3x(y2 + x - 1)
3x^2(y2 + 1 - 1)
Answers
3xy(y + x - 1) <==
A horizontal line passes through the point (5, –1). Which point is also on this line?
A.(0, 0)
B.(–1, 5)
C.(5, –4)
D.(–2, –1)
Answers
Hope this helps! If you have any questions just ask!
Answer: -2,-1
Step-by-step explanation
If a horizontal line passes through the point (5;-1) then the equation if this line: y=-1
Each point (x;-1) is also on this line.
I need hellllllllllllllllllllppppp for this trigonometry question
Answers
see attached picture:
the vertical change is the Y calculation
what is the value of x
Answers
6^2 + 8^2 = x^2
36 + 64 = 100
sqrt(100) = 10
x = 10
a²+b²=c²
8²+6²=c²
64+36=c²
100=c²
√100=√c²
10=c
Using the math above, we can see that c (x) equals 10.
while on vacation, your family budgeted $550 for food. Your family went to the grocery store for drinks and snacks and spent $67.19 Each meal you are going to eat out had a budget of $55
Which expression describes the amount of money left in your after you consume your meals ?
A. 550 - (67.19 + 55x)
B.550- x(67.19 -55)
C.550-x(67.19+55)
D.550-(67.19-55x)
Answers
so ur equation would be : 550 - (67.19 + 55x)
Final answer:
The correct expression to calculate the remaining budget for food after spending on groceries and meals out is 550 - (67.19 + 55x), which is option A.
Explanation:
The question asks us to determine which expression correctly represents the amount of money left in the budget for food after the family has spent money on groceries and consumed their meals. The original budget for food is $550, and the family spent $67.19 on drinks and snacks. Each meal they plan to eat out is budgeted at $55. Let's denote the number of meals the family will eat out as 'x'.
To calculate the remaining budget after these expenses, we subtract the cost of groceries and the total cost of eating out (which is $55 times the number of meals 'x'), from the original budget for food. The correct mathematical expression for the remaining budget is:
550 - (67.19 + 55x)
This expression is represented by option A. This correctly factors in the initial expenditure on groceries of $67.19 and then subtracts $55 for each meal 'x' from the remaining budget.
Determine whether the quantitative variable is discrete or continuous. number of lightning strikes in a city in one year'
Answers
Therefore it is a discrete variable
What is the multiplicative rate of change of the exponential function shown on the graph?
A) 2/9
B) 1
C) 4
D) 9/2
Answers
Answer:
Option: D is correct.
9/2
Step-by-step explanation:
We have to find the multiplicative rate of change of the exponential function shown on the graph.
We know that a general exponential function is given as:
[tex]y=ab^x[/tex]
where b is the multiplicative rate of change.
Now when x=0 we have y=1.
i.e. 1=a
Hence, a=1
and y=b^x
Also,
the graph passes through (1,9/2)
Now when x=1 we have y=9/2
i.e.
9/2=b
Hence, the multiplicative rate of change is:
9/2
The correct answer is A) 2/9. The multiplicative rate of change of the exponential function shown on the graph is A) 2/9.
To determine the multiplicative rate of change of an exponential function from its graph, we need to identify two points on the graph that are one unit apart horizontally (i.e., one unit apart in the x-direction). The multiplicative rate of change is the ratio of the function values (y-values) of these two points.
Let's assume we have two points, (x, y) and (x+1, y'), where y and y' are the corresponding y-values of the exponential function at these x-values. The multiplicative rate of change, r, is given by:
[tex]\[ r = \frac{y'}{y} \][/tex]
From the graph, we can identify two such points. For example, if the function passes through the y-axis at (0, 1) and then at (1, 2/9), we can calculate the multiplicative rate of change as follows:
[tex]\[ r = \frac{2/9}{1} = \frac{2}{9} \][/tex]
This is the multiplicative rate of change of the exponential function. It indicates that for every unit increase in x, the y-value is multiplied by 2/9.
Therefore, the multiplicative rate of change of the exponential function shown on the graph is A) 2/9.
The number of hours per week that the television is turned on is determined for each family in a sample. the mean of the data is 3030 hours and the median is 26.226.2 hours. twenty-four of the families in the sample turned on the television for 1515 hours or less for the week. the 11th11th percentile of the data is 1515 hours. step 2 of 5 : approximately how many families are in the sample? round your answer to the nearest integer.
Answers
Need help please help
Answers
Notice how on the graph, the y value peaks at 7. The y values to the left and right are symmetrical, meaning that the x value for the y value of 7 is the axis of symmetry, and the point (105,7) is the vertex.
If f(x)=x^2-3x,find f(-1.8). Show all work
Answers
____________________________________________________
Basically, plug in "(-1.8)" for "x" ; and solve:
Given: f(x) = x² − 3x ;
____________________________________________________
f(-1.8) = (-1.8)² − 3(-1.8) ;
f(-1.8) = [(-1.8)*(-1.8)] − [3(-1.8)] ;
f(-1.8) = 3.24 − (-5.4) ;
f(-1.8) = 3.24 + 5.4 ;
f(-1.8) = 8.6 .
____________________________________________________
The value of f(x) = x²-3x at x = -1.8 is -2.16.
What is a quadratic function?A polynomial function with one or more variables, where the largest exponent of the variable is two, is referred to as a quadratic function. In other terms, a "polynomial function of degree 2" is a quadratic function.
We have the quadratic function:
f(x) = x²-3x
So, to find the value at x = -1.8:
Substitute the value to the function.
f(-1.8) = (-1.8)²-3(-1.8)
f(-1.8) = 3.24 - 5.4
f(-1.8) = -2.16
Therefore, the value is -2.16.
To learn more about the quadratic function;
https://brainly.com/question/11485644
#SPJ2
If a number is rational then it must be a whole number true or false
Answers
what is the measure of <DCF
Answers
Answer:
The measure of angle DCF is 129 degrees.
Step-by-step explanation:
Angle DCF is the sum of angle DCE plus angle ECF.
This is because, DCF is the main angle and DCE and ECF are its two parts.
Hence, the measure of angle DCF will be = [tex]75+54=129[/tex] degrees.
The answer is :
The measure of angle DCF is 129 degrees.
How to write an equation with an undefined slope?
Answers
an equation with an undefined slope is : x = a
parallal a : y axis
5/16t=-9
Plz help me ASAP and show all of the steps that you did! PLEASE HELP!!! :) 10 POINTS!!!!!
Answers
If that assumption is correct, then we do two things to solve for t. First, we multiply both sides by 16. This undoes the division of 16 on the left side
[tex]\frac{5}{16}t = -9[/tex]
[tex]16*\frac{5}{16}t = 16*(-9)[/tex]
[tex]5t = -144[/tex]
-------------------------------
Then we divide both sides by 5 to undo the multiplication of 5 (note: 5t means 5*t or "5 times t")
[tex]5t = -144[/tex]
[tex]\frac{5t}{5} = \frac{-144}{5}[/tex]
[tex]t = -\frac{144}{5}[/tex]
-------------------------------
So here's what all the steps look like:
[tex]\frac{5}{16}t = -9[/tex]
[tex]16*\frac{5}{16}t = 16*(-9)[/tex]
[tex]5t = -144[/tex]
[tex]\frac{5t}{5} = \frac{-144}{5}[/tex]
[tex]t = -\frac{144}{5}[/tex]
note: -144/5 converts to the decimal value of -28.8 so t = -144/5 is the same as t = -28.8
a customer brings in a item for refund.The price on the item is $4.80 and the tax is 5%.How much including tax should the cashier refund back to the customer
Answers
Answer:
The cashier should refund back to the customer $5,04
Step-by-step explanation:
The cashier has to refund the amount the customer paid, which was the price plus the proportional tax.
Refund=price+tax
Price=$4.80
Tax=$4.80 * 0,05= $0,24
Refund=$4.80 +$0,24=$5,04
which number belongs to the solution set of the equation below? 9x=114
A.14
B.16
C.12
D.18
Answers
You divide 114 / 9 and get your answer
9x = 114
Divide both sides by 9
9x/9 = 114/9
x = 38/3
In decimal it is x = 12.666667
So, C is the correct answer!
I hope I helped!
The length of a rectangle is twice its width. if the perimeter of the rectangle is 54 ft , find its length and width.
Answers
2(2w) + 2w = 54.
4w+2w = 54
6w=54.
w=9
So length equals twice that...I think you can solve that on your own. xD
Write each number as the product of its prime factors
1.) 76
2.) 35
3.)36
4.) 150
5.)180
6.) 520
please help i have 30 mins to get these answered!! :(
Answers
2) 5x7
3) 2x2x3x3
4) 2x3x5x5
5) 2x2x3x3x5
6) 2x2x2x5x13
Marks canoes rents for $20 plus $35 per hour you do not want to spend more than $1.50.for how many hours can you afford to rent the canoe
Answers
$130/35=3.7 hours but since he can’t spend over that amount it would be 3 hours
Have a blessed day/night.
A boy throws a baseball across a field. The ball reaches its maximum height, 18 meters, after 1 second. After approximately 2.3 seconds, the ball lands on the ground. The ball’s motion can be modeled using the function f(x) = –10x2 + 20x + 8. What is the height of the ball 1.5 seconds after it is thrown?
Answers
Answer:
Step-by-step explanation:
Alright, lets get started.
The function that models the height of the ball is given by :
[tex]f(x)=-10x^2+20x+8[/tex]
When we plug x as 1.5 , we could get the height f(1.5) as :
[tex]f(1.5)=-10(1.5)^2 +20*1.5 +8[/tex]
[tex]f(1.5)=-22.5+30+8[/tex]
[tex]f(1.5)=15.5[/tex]
So the height of the ball after 1.5 second is 15.5 meters. : Answer
Hope it will help :)
Answer:
It is c on edge just took the test
Step-by-step explanation:
Find the coordinates of the midpoint of ab with endpoints a(-10,3) and b(2,-2) worksheet answers
Answers
(-4;1/2)
if a quadrilaterals diagonals bisect its vertices, what kind of quadrilateral must it be?
A - Rhombus
B - trapezoid
C - rectangle
D - parallelogram
Answers
Kristen bought 2 candy bars for $1.29 each and a soda for$1.99. She had to pay $0.38 in tax. How much was her bill?
Answers
Answer:
$4.95
Step-by-step explanation:
1.29 * 2 = 2.58 + 1.99 = 4.57
4.57 + .38 = 4.95
There are five position players on a starting basketball team: 2 guards, 2 forwards, 1 canter. Write a ratio in simplest from to express each relationship
Answers
Final answer:
The ratios for the basketball positions in simplest form are guards as 2:5, forwards as 2:5, and the center as 1:5.
Explanation:
The question asks to write ratios for the positions on a basketball team and then to express those ratios in simplest form. There are 5 position players on a starting basketball team, consisting of 2 guards, 2 forwards, and 1 center. To express the relationships between each position, we can write the ratios of guards to the total number of players, forwards to the total number of players, and the center to the total number of players.
The ratio of guards to the total number of players is 2 guards to 5 total players, which simplifies to 2:5.
The ratio of forwards to the total number of players is 2 forwards to 5 total players, simplifying to 2:5.
Lastly, the ratio of the center to the total number of players is 1 center to 5 total players, simplified as 1:5.
What is the area of a triangle whose vertices are
R(−4, 2),S(1, 2), and T(−5, −4)?
Enter your answer in the box
Answers
15 square units.
EXPLANATION
This triangle has one of its height(altitudes) falling outside the triangle.
We determine the base using absolute value method. This is because the coordinates of [tex]R(-4,2)[/tex] and [tex]S(1,2)[/tex] tell us that this line is horizontal. The y-values are constant.
Therefore [tex]|RS|=|1--4|[/tex]
[tex]\Rightarrow |RS|=|1+4|[/tex]
[tex]\Rightarrow |RS|=|5|[/tex]
[tex]\Rightarrow |RS|=5[/tex]
Also
The triangle is bounded between [tex]y=2[/tex] and [tex]y=-4[/tex].
Therefore the vertical height of interest,
[tex]|RT|=|-4-2|[/tex]
[tex]|RT|=|-6|[/tex]
[tex]|RT|=6[/tex]
We can now find the area using the formula
[tex]Area=\frac{1}{2}base\times height[/tex]
[tex]Area=\frac{1}{2}\times6 \times 5[/tex]
[tex]Area=3 \times 5[/tex]
[tex]Area=15[/tex] square units
Jo is flipping a fair coin. If the coin is truly fair, how many times should it land on heads if he flips the coin 200 times
Answers
a coin has a 1/2 probability of landing on heads
so it should land on heads 1/2 of the time
1/2 of 200 = 100
Final answer:
With a fair coin, theoretical probability suggests that Jo should expect to land on heads roughly 100 times out of 200 flips. Actual results may vary slightly due to random chance, but should approximate 50 percent heads over a large number of trials.
Explanation:
If Jo is flipping a fair coin, on average, we would expect the coin to land on heads 100 times out of 200 flips. This expectation is based on the theoretical probability of getting heads, which is 0.5 or 50% for a fair coin. Therefore, if Jo flips the coin 200 times, the expected number of heads is calculated by multiplying the total number of flips by the probability of getting heads (0.5), which is 200 * 0.5 = 100.
However, it's important to note that while the theoretical probability suggests that Jo should get heads approximately 100 times, the actual result might be slightly more or slightly less due to random chance. The larger the number of flips, the closer the actual results are likely to get to the expected 50 percent heads, as demonstrated by the law of large numbers. But for any finite number of flips, there is always potential for some variation from the expected value.