Answer:
So x^2 + 2xy - y^2
Step-by-step explanation:
Let "a" be added to x^2 + xy +y^2 to obtain 2x^2 + 3xy
So a = 2x^2 + 3xy - (x^2 + xy + y^2)
= 2x^2 + 3xy - x^2 -xy - y^2
= x^2 + 2xy - y^2.
So x^2 + 2xy - y^2 must be added.
I'LL GIVE BRAINLIEST PLEASE ANSWER ALL FOUR PLEASE
Answer:
Step-by-step explanation:
1.) 700*0.42 = 294. Out of the 700 people at the concert, 294 are tennagers.
2.) 1.07*$450 = $481.50, including sales tax (final price)
3.) 120/(100%-85%) = 120/0.15 = 800. Original amount of water is 800 ml (Check by 800mL*0.15, which equals 120 mL)
4.) 100-35-45 = 20%
250*20% = 50; Out of the 250 sandwiches, Josh made 50 ham sandwiches.
Does this graph represent a function? Explain.
Answer:
No because function usually go through the origin and are in a straight line.
Which polygon has an interior angle sum of 1080°?
Answer:
The polygon with an interior angle sum of 1080° is an octagon or a polygon with 8 sides. We are given that the interior angle sum of our polygon
Step-by-step explanation:
Sorry if it's wrong.
Answer:
Step-by-step explanation:
Remark
First of all, you need a regular polygon, otherwise the question can have all sorts of interior angles. The standard way to solve this is set up an equation that looks like this.
(n - 2)*180 = 1080 Divide by 180
(n - 2) = 1080/180
n - 2 = 6 Add 2 to both sides.
n = 6 + 2
n = 8
Conclusion
So an 8 sided figure has 8 interior angles that add up to 1080 if the 8 sided figure is regular.
75% of the 40 beverages in the vending machine are sports drinks. How many of the beverages are sports drinks?
6. Sales associates at a local clothing
store eam a 2% commission on the
clothes they sell if an associate earned
$50 in commission, what was the value
of her sales? Explain how you can
check your answer.
Answer quick PLZZ no website
Answer:
$2500
Step-by-step explanation:
Given data
Percent commission from sale= 2%
We are told that an associate earned $50 from sales
Let the amount of the sales be x
so
2/100*x= 50
0.02x=50
Divide both sides by 0.02
x=50/0.02
x=2500
Hence the sales made was $2500
X
_ = 4
3
whats the answer for x?
PLS ANSWER ASAP
Answer:
x = 12
Step-by-step explanation:
Because if you multiply 3 and 4 its 12 Which makes the answer 12
Help me please I’ll give brainliest
Answer:
its B
hope it helps
byeeeee
A confidence level of 95% means: 95% of the time, sample percentages will fall above the mean. 95% of the time, population data will fall between 149.61 and 150.39. the mean of 95% of the adults in the sample was 150.
Answer:
B
Step-by-step explanation:
95% of the time, population data will fall between 149.61 and 150.39.
A confidence level of 95% means 95% of the time, population data will fall between 149.61 and 150.39. The correct answer would be an option (B).
What is the sample?A sample is a subset of data drawn from a larger population by a researcher using a predetermined selection process. These components are referred to as sample points, sampling units, or observations.
The second statement, "95% of the time, population data will fall between 149.61 and 150.39," is more accurate in terms of what a 95% confidence level implies.
When you conduct a sample survey, you can calculate a confidence interval, which is an estimate of the range of values that the population parameter is likely to fall within.
If the confidence level is 95%, it means that if you were to repeatedly sample the population and construct a confidence interval each time, 95% of those intervals would contain the true population parameter.
Thus, the correct answer would be option (B).
Learn more about the sample here:
https://brainly.com/question/11045407
#SPJ6
A store has clearance items that have been marked down by 60%. They are having a sale, advertising an additional 15% off clearance items. What percent of the original price do you end up paying?
Answer: 34%
Step-by-step explanation:
Given
Price is marked down by 60% with an additional discount of 15% on the marked down price
Suppose x is the original price of the item
After marking down, it is
[tex]\Rightarrow x-x\times 0.6=0.4x[/tex]
after additional discount it is
[tex]\Rightarrow 0.4x(1-0.15)=0.4x\times 0.85=0.34x[/tex]
Effective discount on the item is
[tex]\Rightarrow \dfrac{x-0.34x}{x}\times 100=66\%[/tex]
Thus, a person is paying [tex]100-66=34\%[/tex] of the original price
I WILL GIVE BRAINLIEST!!!
Answer:
The Answer is odd hope this helps :)
Step-by-step explanation:
what is the volume of a pyramid?
Step-by-step explanation:
volume of pyramid is V=lwh/3
hope this helps you
have a nice day:)
Cynthia rounds a number, x, to one decimal point.
The result is 6.3
Write down the error interval for x.
Answer:
[6.26,6.29]U[6.31,6.34
Step-by-step explanation:
6.26
6.27
6.28
6.29
6.31
6.32
6.33
6.34
So in interval form [6.26,6.29]U[6.31,6.34]
35. In January 1990 the world's population
was 5.3 billion. Assuming a growth rate of 2%
per year, the world's population, in billions,
for t years after 1990 can be modeled by
the equation P = 5.3 (1.02). According
to the model, the population growth from
January 1995 to January 1996 was:
(A) 106,000,000
(B) 114,700,000
(C) 117,000,000
(D) 445,600,000
(E) 562,700,000
How would this triangle be classified?
Answer:
D (Isosceles Obtuse)
Step-by-step explanation:
Since 2 of the sides are the same length, that would make the triangle an isosceles.
Since 1 of the angles are over 90 degrees, that would make the triangle obtuse.
This makes the triangle an isosceles obtuse triangle.
hope this helps
Determine if the sequence below is arithmetic or geometric and determine the
common difference / ratio in simplest form.
64, 8, 1, ...
Answer:
64, 8, 1, 9
Step-by-step explanation:
Answer:
24
Step-by-step explanation:
Use the distributive property for this expression to simplify. *
7y(10.2 + 11y)
please help asap
Anita purchased apples priced at $1.79 per pound at the grocery store. Her receipt shows that she spent $5.37 on apples.
How many pounds of apples did Anita purchase ?
Answer:
3lb
Step-by-step explanation:
$5.37 divided by 1.79 $/lb = 3 lb
Find the measure of b and a. (type the number of the angle measure ONLY)
Answer:
Step-by-step explanation:
A straight line has 180 degrees.
43 + b + 50 = 180 Collect like terms
b + 93 = 180 Subtract 93
b = 180 - 93
b = 87
a + b + 75 = 180 All triangles have 180 degrees.
a + 87 + 75 = 180 Combine like terms
a + 162 = 180 Subtract 162 from both sides
a = 180 - 162
a = 18
-3(6v-3w-5)
i have to use the distributive property to remove the parentheses
Answer:
-18v + 9w +15
Step-by-step explanation:
-3(6v-3w-5)
You can use a table or multiply each term
-3(6v) + -3(-3w) + -3(-5)
= -18v + (9w) + (15)
= -18v + 9w + 15
Find the following.
f(x) = x + 8, g(x) = x − 8
(a) (f + g)(x) =
(b) (f − g)(x) =
(c) (fg)(x) =
(d) (f/g)(x) =
What is the domain of f/g?
(Enter your answer using interval notation.)
Answer:
(f + g)(x) = 2x
(f - g)(x) = 16
(fg)(x) = [tex]x^{2}[/tex] - 64
(f/g)(x) = (x + 8)/(x - 8) Domain: x < 8 ∪ x > 8
Step-by-step explanation:
(f + g)(x) = f(x) + g(x) = x + 8 + x - 8 = 2x
(f - g)(x) = f(x) - g(x) = x + 8 - (x - 8) = x + 8 - x + 8 = 16
(fg)(x) = f(x)g(x) = (x + 8)(x - 8) = [tex]x^{2}[/tex] - 64
(f/g)(x) = f(x)/g(x) = (x + 8)/(x - 8)
x - 8 ≠ 0
x ≠ 8
Domain: x < 8 ∪ x > 8
Mhanifa can you please help this is due asap
Answer:
Question 1 Adjacent angles are supplementary, opposite angles are equalFind x
62 + 5x + 3 = 1805x = 180 - 655x = 115x = 23Find y
62 = 3y + 23y = 60y = 20Question 2Diagonals bisect each otherFind x
4x = 3x + 7x = 7Find y
6y = 2y + 164y = 16y = 4Correct choice is A
According the box Plot, 50% of the students are atleast how tall?
a. 47 inches
b. 53 inches
c. 56 inches
d. 62 inches
A survey is conducted at two junior high
schools asking students about the number of
sodas they consume each day.
Sodas Consumed Per Day
HE
Junior High
Junior High B
1
Based on the data shown in the graphs,
which statement is true?
Answer:
A
Step-by-step explanation:
You people my pl
Ben's mom wants to buy a new carpet for the family room that measures 12 feet by 11 feet. She can purchase the carpet on sale for 6$ per square foot including installation. How much will bens mom spend to carpet the family room?
Answer:
$792
Step-by-step explanation:
The measure of the carpet is 12 feet by 11 feet.
She can purchase the carpet on sale for 6$ per square foot including installation.
The area of the carpet will be calculated as follows :
[tex]A=l\times b\\\\A=12\times 11\\A=132\ ft^2[/tex]
If the cost is $6 per square foot, then net cost will be :
Cost = 132×6
Cost = $792
So, she will spend $792 to carpet the family room.
Given PQRS and ZS = 40°, what is the measure of ZR?
S
R
40°
Answer:
angle R = 140 degrees
Step-by-step explanation:
Discriminant 9v^2+v+5=0
Answer:
-179, since it is negative then there are no real roots
Step-by-step explanation:
b²-4ac is the discriminant formula
9v² + v + 5 = 0 ∴ a = 9, b = 1, c = 5
1² - 4(9)(5) = -179
Hey Guys can you help me with this? An article is sold at a certain price. By selling it at 2/3 of that price, one loses 10%. Find the profit percent at the original price. Thanks!
Answer:
35%
Step-by-step explanation:
If you see 2/3 as it is, each piece could be 35 pieces, leaving you with the profit, 35%
Plain explanation but I hope this helped!
you planted sunflower seeds in your backyard and everyday the number of flowers doubles if it takes 42 days for the flowers to fill the garden how many days would it take for them to fill half of the garden
Plz HELPPP]PPPPPPPPPPPPPPPP
Answer:
41
Step-by-step explanation:
P is the point (16,9) and Q is the point (22. 24).
(a) Find the equation of the line perpendicular to PQ that passes through the point (5, 1).
Give your answer in the form y=mx+c.
(b) N is the point on PQ such that PN=2NQ. Find the co-ordinates of N.
Answer:
see explanation
Step-by-step explanation:
(a)
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = (P(16, 9) and (x₂, y₂ ) = Q(22, 24)
[tex]m_{PQ}[/tex] = [tex]\frac{24-9}{22-16}[/tex] = [tex]\frac{15}{6}[/tex] = [tex]\frac{5}{2}[/tex]
Given a line with slope m then the slope of a line perpendicular to it is
[tex]m_{perpendicular}[/tex] = - [tex]\frac{1}{m}[/tex] = - [tex]\frac{1}{\frac{5}{2} }[/tex] = - [tex]\frac{2}{5}[/tex] , then
y = - [tex]\frac{2}{5}[/tex] x + c ← is the partial equation
To find c substitute (5, 1) into the partial equation
1 = - 2 + c ⇒ c = 1 + 2 = 3
y = - [tex]\frac{2}{5}[/tex] x + 3 ← equation of perpendicular line
(b)
Given PN = 2NQ , then N sections PQ in the ratio 2 : 1
Using the Section formula to find coordinates of N
N = ( [tex]\frac{16(1)+22(2)}{1+2}[/tex] , [tex]\frac{9(1)+24(2)}{1+2}[/tex] )
= ( [tex]\frac{16+44}{3}[/tex], [tex]\frac{9+48}{3}[/tex] )
= ( [tex]\frac{60}{3}[/tex], [tex]\frac{57}{3}[/tex] )
= (20, 19 )
At a local print shop, 12 copies can be made for $3. At this rate, how much would it cost to make 84 copies? Fill out the table of equivalent ratios until you find a value of x. But i don't get it i divided 21 but got 4/7 & 1/7 so do i multiply or what
Answer:
I'm not understanding the second part. Can you elaborate more in the comments?
But it would cost $21
Answer:
$21
Step-by-step explanation:
You have to use ratios
[tex]\frac{12}{3} =\frac{84}{x} \\\\12x=252\\x=21[/tex]
It would cost $21 to make 84 copies