Answer:
41
Step-by-step explanation:
substitute x=-2 and y=6, we know
8×6 +4×(-2) -(2×(-2) +3) = 48-8-(-1) =41
Answer:
41
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightStep-by-step explanation:
Step 1: Define
Identify
8y + 4x - (2x + 3)
x = -2
y = 6
Step 2: Evaluate
Substitute in variables: 8(6) + 4(-2) - (2 · -2 + 3)(Parenthesis) Multiply: 48 - 8 - (-4 + 3)(Parenthesis) Add: 48 - 8 - (-1)Subtract: 41Receipt-of-goods discounts tend to be offered in cases where?
how to simplify this equation ?
(3xy) (9y)
Answer:
27 xy^2
Step-by-step explanation:
(3xy) (9y)
Multiply
3*9 =27
xy*y = xy^2
Combine
27 xy^2
-3x2 + 5x- 7 = 0 is not in general form.
True
False
The answer is true because it is not a general form
pls help asap!!!!!!!!
Answer:
It is possible, because the two shortest sides have to add up to be more than the longest side, and 8 + 12 = 20, which is more than the longest side of 17.
So yes, I agree with Bear.
The circumference of a circle is 19 pi m. What is the area, in square meters? Express your answer in terms of pi
Answer:
90.25πm^2
Step-by-step explanation:
circumference = 2 pie r
then , 19 pie meter = 2 pie r
so radius r = 19 /2 m
therefore ,
area of circle = pie r ^ 2
= 90.25 pie meter square
Answer:
circle circumference formula is 2 pi R
and area of circle pi R ²
19 pi is 2×9.5×pi
so the radius is 9.5
and area is pi 9.5² m² = 90,25 pi m²
B. The difference between the cash price and the initial deposit in hire purchase is known as ?
Hire Purchase agreement
[tex]{correct me if i am wrong}}[/tex]
The difference between the cash price and the initial deposit in hire purchase is known as [tex]_\( \text{Principal} \)_[/tex].
In hire purchase transactions, buyers can acquire goods by making an initial down payment and paying the remaining amount in installments. The difference between the total cost of the item and the initial deposit is a crucial concept known as the [tex]_\( \text{Principal} \)_[/tex] in mathematical terms. Let's explore this in detail.
In the context of hire purchase, the total cost of the item is often referred to as the cash price. It represents the actual value of the item without considering any interest or finance charges. On the other hand, the initial deposit, also called the down payment, is the amount paid upfront by the buyer to secure the item.
Now, let's introduce some variables to help us understand this concept mathematically:
- Let CP be the cash price of the item.
- Let D be the initial deposit made by the buyer.
The difference between the cash price and the initial deposit is given by:
[tex]\[ \text{Principal} = CP - D \][/tex]
The Principal is the amount that remains to be paid off in installments, and it serves as the basis for calculating the subsequent monthly or periodic payments in a hire purchase agreement.
The Principal is critical because it determines the total amount the buyer will end up paying for the item. It also affects the duration of the hire purchase agreement, as the buyer's installments are typically spread over a specific number of months or years.
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r negative 7 divided by s negative 1
Unfortunately that's an impossible question because we have no idea what the variable is. Sorry buddy. You're on ur own there
Given the quadriceps function ,y=ax2+bc+c what happens to the graph when "a" is a positive?
Answer:
When "a" is positive, the parabola opens upwards and the vertex is the minimum value.
Step-by-step explanation:
8 necklace have 864 beads in all how many beads will 15 such necklace have?
7. You are mixing some concrete for a home project, and you've calculated according to the
directions that you need six gallons of water for your mix. But your bucket isn't calibrated, so you
don't know how much it holds. On the other hand, you just finished a two-liter bottle of soda. If you
use the bottle to measure your water, how many times will you need to fill it?
Answer:
11.4 bottles for US gal.
13.6 bottles for Imperial gal.
Step-by-step explanation:
1 US gallon = 3.8 L
6 US Gallons = 6*3.8 L = 22.8 L = 11.4 bottles
1 Imperial gallon = 4.54 L
6 Imperial gallons = 6*4.54 L = 27.24 L = 13.6 bottles.
The prices of a term of notebooks are between $2 and $5. If
you plan to spend $10 on notebooks, calculate the least
number of notebooks you can buy in this situation.
notebooks
Answer: Number “2”
Step-by-step explanation: I took the ck-12 Applications with Inequalities
Which of the following represents the solution to the inequality 215-2xl-3315?
O (-60,-2) (7.00)
O (-0,1.5) (7.5.00)
O 1-2, 7]
O [1.5, 7.5]
9514 1404 393
Answer:
(c) [-2, 7]
Step-by-step explanation:
We can solve the inequality for an expression in x.
2|5 -2x| -3 ≤ 15
2|5 -2x| ≤ 18 . . . . . . add 3
|5 -2x| ≤ 9 . . . . . . . . divide by 2
We prefer a positive coefficient of x, so we'll multiply inside the absolute value by -1. This does not change the absolute value. (|-1| = |1|, for example)
|2x -5| ≤ 9
Now, we can "unfold" this to get the compound inequality ...
-9 ≤ 2x -5 ≤ 9
-4 ≤ 2x ≤ 14 . . . . . add 5
-2 ≤ x ≤ 7 . . . . . . . divide by 2
The solution interval is [-2, 7].
__
The graph shows the equation of the given form f(x) ≤ c converted to the form f(x)-c ≤ 0. The graphing calculator highlights x-intercepts easily, so we take advantage of that to show the solution interval bounds. The graph is less than zero between the bounds.
The curve y=9-6/x and the line y+x=8 intersect at two points. Find the coordinates of the two points
Answer: (2,6) (-3,11)
Step-by-step explanation:
At the intersection, y=9- 6/x and y+x = 8 are equal to each other
y + x = 8 is the same as y=8-x
Sub this into y = 9 - 6/x
8 - x = 9 - 6/x
Multiply everything by x:
8x - x^2 = 9x - 6
x^2 + x - 6 = 0
(x-2)(x+3) = 0
x = 2 (so y = 9 - 6/x so y = 9 - 6/2 =6)
x = -3 (so y = 9-6/x so y = 9-6/-3 = 11)
The coordinates of two points will be ; (2,6) and (-3,11).
It is given that the curve y = 9 - (6 / x) and line y + x = 8.
Find the coordinates of two points.
What is the general equation of line ?
General equation is given by ; y = mx + c.
At the intersection,
y = 9 - 6/x ----------- (Equation 1)
and y + x = 8 are equal to each other.
y + x = 8 can be written as y = 8-x.
Substitute this into Equation 1.
8 - x = 9 - ( 6/x )
Multiply both sides by x ;
8x - [tex]x^{2}[/tex] = 9x - 6
[tex]x^{2}[/tex] + x - 6 = 0
This can be written as ;
(x-2) (x+3) = 0
So we get values of x ;
i.e., x = 2 , -3
For , x = 2
y = 9 - 6/x
⇒ y = 9 - (6/2)
⇒ y = 6
For , x = - 3
⇒ y = 9 - (6/x)
⇒ y = 9 - (6/ -3)
⇒ y = 11
Thus , the coordinates of two points will be ; (2, 6) and (-3,11).
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how many solutions does this system have?
Answer:
B. One
Step-by-step explanation:
Multiply the first equation by 2 and then add both equations to get rid of [tex]x[/tex]:
[tex]\begin{cases}2x+8y=18,\\-2x+y=0\end{cases}[/tex]
Adding both equations:
[tex]8x+y=18,\\9y=18,\\y=2[/tex]
Substituting [tex]y=2[/tex]:
[tex]-2x+2=0,\\-2x-2,\\x=1[/tex]
Therefore the only solution to the system of equations is (1, 2) and the system has one solution.
work out the size of angle x.
Answer:
actually I would have solved it but don't know the angle you're talking about
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 34 hours and the median is 30.2 hours. Twenty-four of the families in the sample turned on the television for 19 hours or less for the week. The 8th percentile of the data is 19 hours. Step 4 of 5 : What is the value of the 50th percentile
Answer: The value of the 50th percentile is 30.2 hours.
Step-by-step explanation:
We are given:
Mean of the data watching television by 24 families = 34 hours
Median of the data watching television by 24 families = 30.2 hours
8th percentile of the data = 19 hours
The median of data is the value that divides the data into two equal halves.
This means that the median will represent the 50th percentile of data.
Thus, the value of the 50th percentile is 30.2 hours.
Elena receives $131 per year in simple interest from three investments totaling $3000. Part is invested at 3%, part at 4% and part at 5%. There is $1000 more invested at 5% than at 4%. Find the amount invested at each rate.
The amount invested at 3% is $___ the amount invested at 4% is $___ , and the amount invested at 5% is $___
Answer:
Elena invested $ 1,700 at 5%, $ 700 at 4%, and $ 600 at 3%.
Step-by-step explanation:
Given that Elena receives $ 131 per year in simple interest from three investments totaling $ 3000, and part is invested at 3%, part at 4% and part at 5%, and there is $ 1000 more invested at 5% than at 4%, to find the amount invested at each rate, the following calculations must be performed:
1500 x 0.05 + 500 x 0.04 + 1000 x 0.03 = 75 + 20 + 30 = 125
1600 x 0.05 + 600 x 0.04 + 800 x 0.03 = 80 + 24 + 24 = 128
1700 x 0.05 + 700 x 0.04 + 600 x 0.03 = 85 + 28 + 18 = 131
Therefore, Elena invested $ 1,700 at 5%, $ 700 at 4%, and $ 600 at 3%
A park, in the shape of a quadrilateral ABCD has angle B=900 , AB=9m, BC=40m, CD=15m, DA=28m. How much area does it occupy?
Given:
In quadrilateral ABCD, angle B=90° , AB=9m, BC=40m, CD=15m, DA=28m.
To find:
The area of the quadrilateral ABCD.
Solution:
In quadrilateral ABCD, draw a diagonal AC.
Using Pythagoras theorem in triangle ABC, we get
[tex]AC^2=AB^2+BC^2[/tex]
[tex]AC^2=9^2+40^2[/tex]
[tex]AC^2=81+1600[/tex]
[tex]AC^2=1681[/tex]
Taking square root on both sides, we get
[tex]AC=\sqrt{1681}[/tex]
[tex]AC=41[/tex]
Area of the triangle ABC is:
[tex]A_1=\dfrac{1}{2}\times base\times height[/tex]
[tex]A_1=\dfrac{1}{2}\times BC\times AB[/tex]
[tex]A_1=\dfrac{1}{2}\times 40\times 9[/tex]
[tex]A_1=180[/tex]
So, the area of the triangle ABC is 180 square m.
According to the Heron's formula, the area of a triangle is
[tex]Area=\sqrt{s(s-a)(s-b)(s-c)}[/tex]
where,
[tex]s=\dfrac{a+b+c}{2}[/tex]
In triangle ACD,
[tex]s=\dfrac{28+15+41}{2}[/tex]
[tex]s=\dfrac{84}{2}[/tex]
[tex]s=42[/tex]
Using Heron's formula, the area of the triangle ACD, we get
[tex]A_2=\sqrt{42(42-28)(42-15)(42-41)}[/tex]
[tex]A_2=\sqrt{42(14)(27)(1)}[/tex]
[tex]A_2=\sqrt{15876}[/tex]
[tex]A_2=126[/tex]
Now, the area of the quadrilateral is the sum of area of the triangle ABC and triangle ACD.
[tex]A=A_1+A_2[/tex]
[tex]A=180+126[/tex]
[tex]A=306[/tex]
Therefore, the area of the quadrilateral ABCD is 306 square meter.
if p(a) contain 8 elements then set a contain which element
Answer:
3 elements
because 2^3=8
Answer:
3 elements
because 2^3=8
Step-by-step explanation:
Karen purchased 3 gallons of yellow paint and 4 gallons on blue paint from the hardware store. The total cost was $105. Yellow
paint and blue paint sell for the same price per gallon. Which THREE statements are correct?
Answer:
In order to answer this properly, I would need to see the choices. However, I can tell you that:
-Each gallon of paint cost $15
-Karen spent $45 on yellow paint
-Karen spent $60 on blue paint
Step-by-step explanation:
Karen bought a total of 7 cans of paint, all the same price.
105/7=15.
15*3=45 (yellow paint)
15*3=60 (blue paint)
Hope this helps.
Someone help me on this percent question
Answer: 6%
Hope it helps :)
Step-by-step explanation:
Price of mixer = 45.00$
Price of mixer with tax = 47.70
Tax added to the price of mixer = 45 - 47.70
= 2.70$
Percentage of Tax added to the price of mixer
= 2.70 = P multiplied by 45
(divide 2.70 by 45 and 45 by 45 as well)
= 0.06 = P
(we have to now convert the decimal to a percentage)
= 0.06 multiplied by 100 = P
6% = P
Consider these functions:
Rx) = 5x^2 + 2
g(x) = x^2 - 1
What is the value of g(f(1))?
A.
2.
OB.
oa
C.
22
D.
48
Answer:
D
Step-by-step explanation:
F(1)=7
G(f(1)= g(7)= 49-1=48
If f(x) = 6x + 2 and g(x) = 4x - 5, find f(x) - g(x).
A. 2x - 7
B. 2x + 7
C. 10x - 3
D. 10x + 7
Answer: D
Step-by-step explanation:
set the functions to subtract
12. The bus left at 9.30 a.m and
reached Their destination at 1.00 p.m. How long did
the bus take to reach their destination?
Answer:
3.5 hours
Step-by-step explanation:
1300 - 0930 = 330 = 3.5 hours
Antiderivative of Acceleration is???
Answer:
Since acceleration is the derivative of velocity, velocity is the antiderivative of acceleration. If you know the acceleration for all time, and if you know the starting velocity, you can figure out the velocity for all time.
Step-by-step explanation:
Answer:
Since acceleration is the derivative of velocity, velocity is the antiderivative of acceleration. If you know the acceleration for all time, and if you know the starting velocity, you can figure out the velocity for all time.
please helpppp!!! it’s timed!!!! thank u for helping!!!!!
Answer:
Segment EH or segment EG
Step-by-step explanation:
A tangent segment is a segment that has one of its endpoints perpendicular to the radius of a circle. The point where the one endpoint of the tangent segment and the radius meet is the point of tangency.
Segment EH and segment EG are both tangent segments to the circle with center Q.
Any of the two is the answer
HELPP FASTTT PLEASEE HELP MEEE!!!!
1-2
x+1
1. If f(x) = find f-'(x)=
2
2
Y +1
y-1
b. 2y-1
c. 2x +1
d.
a.
e. 2x -1
2.
2
Answer:
1) 2x-1
2) 8 , 11, 11.3
Step-by-step explanation:
1) To figure out the inverse of a function , first change the F(x) to y
y = [tex]\frac{x+1}{2}[/tex]
Then switch the x and y
x = [tex]\frac{y+1}{2}[/tex]
Solve for y. Multiply by 2 both sides. Subtract 1 from both sides.
2) Use distance formula : d = [tex]\sqrt{(x_{2}-x_{1}) ^{2} + (y_{2}-y_1)^{2} }[/tex]
the first two are easy because the same x value. so just calculate Δy
-2 - 6 = -8 When you square it it becomes positive 64 and square root it and it becomes 8.
the next is a Δx. same method. 8-(-3) = -11 Square and square root and you get 11.
last one use the formula. substitute values of x's and y's into equation and solve for d.
Due to the heavy rains, all pallets of blocks have become wet and the weight of each block has altered. It is desired to estimate the average weight of the blocks thus wet. For this, a sample of 15 blocks is selected and the following weights are recorded in kilograms: 45.8, 43.9, 46.2, 48.5, 47.2, 45.8, 49.1, 43.9, 47.6, 42.8, 46.5, 44.9, 46.8, 45.8 and 44.6; Estimate µ, the average weight of all pallets of blocks, and determine a bound for the estimation error.
Answer:
To find the estimated value we add all of them together then divide it by the amount of them
45.8+43.9+46.2+48.5+47.2+45.8+49.1+43.9+47.6+42.8+46.5+44.9+46.8+45.8 +44.6=689.4
now we divide it by 15 since there is 15 blocks so
689.4 divided by 15=45.96
so the average weight is 45.96
What is the length of the line segment joining the points A(3, - 5) and B(-5,1)?
Which expression is equivalent to xy^2/9?
Answer:
[tex]xy^\frac{2}{9} = x*\sqrt[9]{y^2}[/tex]
Step-by-step explanation:
Given
[tex]xy^\frac{2}{9}[/tex]
Required
The equivalent expression (see attachment)
We have:
[tex]xy^\frac{2}{9}[/tex]
Split
[tex]xy^\frac{2}{9} = x*y^\frac{2}{9}[/tex]
Apply the following laws of indices
[tex]y^\frac{m}{n} = \sqrt[n]{y^m}[/tex]
So, we have:
[tex]xy^\frac{2}{9} = x*\sqrt[9]{y^2}[/tex]
Hence (d) is correct
Answer:
Its D.
Step-by-step explanation:
Just took the quiz on EDGE2022