Answer:
f(3, -1) = 12
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Function NotationStep-by-step explanation:
Step 1: Define
f(x, y) = 2x - 3y + xy²
(3, -1) is x =3 and y = -1
Step 2: Evaluate
Substitute: f(3, -1) = 2(3) - 3(-1) + 3(-1)²Exponents: f(3, -1) = 2(3) - 3(-1) + 3(1)Multiply: f(3, -1) = 6 + 3 + 3Add: f(3, -1) = 9 + 3Add: f(3, -1) = 12In (3,-1) the first number is x and the second number is y.
Replace x and y in the equation and solve:
2x - 3y + xy^2 = 2(3) -3(-1) + (3)(-1)^2
Simplify:
6 + 3 +3 = 12
The answer is 12
What is 2 divided by 3/4
Answer:
1/2
Step-by-step explanation:
2 / (3/4) = 1/2 * 3/4
= 3/6
= 1/2
Answer:2.6 with the 6 repeating
or 2.66666666667
Step-by-step explanation:
i am fast with a calculator.
Sharon and Dani make invitations for a party.Sharon makes 27 invitations. That is 3 times as many as Dani makes.write and solve an equation to find the number of invitations Dani makes
Answer:
81 Invitations, 27 times 3 = 81
Step-by-step explanation:
If the roots of the equation
lx²+nx+n=o is in the ratio p:q
then
√(p/q) + √(q/p)=?
Step-by-step explanation:
Let the given ratio be pk : qk .
So , here the quadratic equation is lx² + nx + n = 0. With respect to Standard form ax² + bx + c = 0.
We have ,
a = lb = nc = n→ Sum of roots = -b/a = -n/l = qk + pk
→ Product of roots = c/a = n/l = k²pq .
[tex]=> \dfrac{n}{l} = \dfrac{k^2}{pq} \\\\=> k^2 =\dfrac{n}{pql} [/tex]
And here pk and qk is a root of the quadratic equation ,
[tex]=> lx^2 + nx + n = 0 \\\\=> l(pk)^2 + n(pk) + n = 0\\\\=> lp^2k^2+npk + n = 0 \\\\=> lp^2\bigg( \dfrac{n}{pql} \bigg) + np\bigg(\sqrt{\dfrac{n}{pql}} \bigg) + n = 0 \\\\ => n\bigg\{\dfrac{p}{q}+\sqrt{\dfrac{np}{lq}}+1\bigg\} = 0 \\\\=> \dfrac{p}{q}+\sqrt{\dfrac{np}{lq}}+1 =0\\\\=>\sqrt{\dfrac{p}{q}} \bigg( \dfrac{q}{p}+\sqrt{\dfrac{np}{lq}}+1\bigg) = 0 \\\\=> \sqrt{\dfrac{p}{q}}+ \sqrt{\dfrac{q}{p}}+ \sqrt{\dfrac{n}{l}}=0 \\\\\boxed{\red{\bf\longmapsto \sqrt{\dfrac{p}{q}}+ \sqrt{\dfrac{q}{p}} = - \sqrt{\dfrac{n}{l}}}} [/tex]
GCF And LCM of 24, 36, 45
Answer:
Step-by-step explanation:
First lets prime factorize each number
24 = 2 x 2 x 2 x 3
36 = 2 x 2 x 3 x 3
45 = 3 x 3 x 5
GCF = 3 (3 is the only common prime number factor in the 3 numbers)
LCM = 2 x 2 x 2 x 3 x 3 x 5
= 24 x 3 x 5
= 72 x 5
= 360
Happy to help :)
A cookie recipe that yields 48 cookies calls for 2 cups of flour. How much flour would be needed for a cookie recipe that yields 144 cookies? help asap!!!!! :(
Answer: 6 cups
Step-by-step explanation:
You need to find a unit rate...
48/2= 1 cup for 24 cookies (unit rate)
144/24=6 so you need to multiply 1 and 24 each by 6
1*6=6
24*6
to get...
6 cups for 144 cookies
x-2y= 1 3x -6y =3 solve this by using the substitution method
Answer:
im pretty sure its infinite solutions
Step-by-step explanation:
Evaluate the equation.
196b = 450.8
Answer:
b = 2.3
Step-by-step explanation:
450.8 / 196 = 2.3
Answer:
B=2.3
Step-by-step explanation:
196b÷196=450.8÷196
help y'all i need it badly
Answer:
In other words, the slope of the line tells us the rate of change of y relative to x. If the slope is 2, then y is changing twice as fast as x; if the slope is 1/2, then y is changing half as fast as x, and so on.
Step-by-step explanation:
Hope this helps
please awnser use images for question
Answer:
coordinate points
Step-by-step explanation:
variables: a symbol for a value we don't know yet. ex: x or y
numbers: I hope you know what they are cuz i dunno how to describe it ex: 2
coordinate points: a set of numbers that show position on a graph ex: (2,4)
operations: adding, subtracting, multiplying, dividing
Is the result statistically significant? Explain your answer.What does a mean difference of zero between the two groups indicate?
Answer:
Statistically significant means a result is unlikely due to chance. The p-value is the probability of obtaining the difference we saw from a sample (or a larger one) if there really isn't a difference for all users
Answer:
The p-value is the probability of obtaining the difference we saw from a sample (or a larger one) if there really isn't a difference for all users
in 1990 the estimated population of pittsburgh, pennsylvania, was 369,879. in 2000 the estimated population was 334,563. find the percent of decrease from the nearest whole percent from 1990 to 2000.
Answer:
9.55%
Step-by-step explanation:
1990 = 3,69,879 2000 = 3,34,563
%Decrease = Old Value - New Value/Old Value ×100%
%Decrease = 3,69,879 - 3,34,563/369879 ×100%
%decrease = 35316/369879 × 100%
%Decrease = 9.548%
%Decrease = 9.55%(Answer)
Need help ASAP 25 points
Answer:
B and F
Step-by-step explanation:
(6-11)^2 =
6/11 x 6/11
6^2/11^2
36/121
The answers are B, E and F
The measure of ZJLM is 140°. The measure of ZJKL is 75°.
What is the measure of ZKJL?
Enter your answer in the box,
mZKJL =
Answer:
65°
Step-by-step explanation:
m∠KJL = 65°
multiply 17.243 * 0.95
Answer:
16.38085
Step-by-step explanation:
Answer:
the answer is: 16.38085
Step-by-step explanation:
i have a good calculator
I need help ASAP plz help
Answer:
8:4
7:3
Step-by-step explanation:
You spend 150 minutes in three classes. Write and solve a proportion to find how many minutes you spend in five classes.
Answer:
250 minutes
Step-by-step explanation:
I'm going to word it in a more complicated way so that you can already have this knowledge for future times...
3t = 150
150 ÷ 3 = 50
t × 5 = 250
a sum of money put out at compund interest in increased by Rs.180 at the end of first year and by Rs. 188.10 at the end of second year. find out the sum and rate of interest
Answer:
This is the answer. All the best
3/4(8x^2+1)3x^2+1/4
Answer:
Please look at the attached image to see the answer.
p=10-2.5c, find p when c = 3.2
Answer:
P=2
Step-by-step explanation:
10-2.5(3.2)=P
By order of operations you would multiply 2.5 and 3.2 together giving you 8.
You would then subtract 10-8 giving you 2.
Determine if the following conditional statement is true or false,
alf B is between A and C, then AB + BC = AC
b.ITB is between A and C, then AB = BC,
✓
c. If AB = BC, then B is a midpoint,
Answer:AlF3
Step-by-step explanation:
Sarah's soccer team won 68% of the games they played. If they won 17 games, how many did they did they play?
Answer:
25
Step-by-step explanation:
Compare the data and get the answer
Answer:
25
Step-by-step explanation:
Find the average price of homes in the county you selected and use that as population mean prices to state a hypothesis about the data. Note that you already have a sample mean of your area, Use this to set up a hypothesis test. Develop a summary of the five-step hypothesis testing model.
Answer:
hello your question has some missing part attached below is the missing part
Average Price of home in my county= $580,400 Mean=640069.371428571 stand error= 20175.166257334
The Sample mean that already have = $ 640,069 Stand. Dev.=119357.893215687 count= 35 Variance: 14246306672.8874
Critical t= confidence=95% sign= 5%
2.05183052
Answer :
First step : Confidence interval
Second step : Hypothesis test
Third step : perform a Test statistic
Fourth step : Reject null hypothesis
Fifth step : conclusion
Step-by-step explanation:
First step : Confidence interval
attached below
confidence interval ; ( 599068.13, 681069.87 )
Second step : Hypothesis test
attached below
Critical values of t = ± 2.032 ( from table )
Third step : perform a Test statistic
attached below
hence t = 2.958
Fourth step : Reject null hypothesis
we will reject null hypothesis because calculated value of t = 2.958 > critical value ( t = 2.032 )
Fifth step : conclusion
Provided data supports claim that average price of home in my area is the same as average price of home in the entire country .
Determine the x- and y- intercepts for the graph equation y = -8
a. x-intercept is (0, -8) No y-intercept
b. No x-intercept y-intercept is (0, -8)
c. x-intercept is ( x8, 0) NO y-intercept
d. NO x-intercept is ( -8,0)
Please select the best answer from the choices prov
Answer:
b. No x-intercept y-intercept is (0, -8)
Answer:b
Step-by-step explanation:
Ratio of dolls to teddy bears is 6:5. If the has 240 dolls how many teddy bears are there?
I GIVEEEEE BRAIMLILSTER
Answer:
[tex]\boxed{\boxed{\pink{\bf \leadsto It \ will \ take \ 5 hours \ to \ travel \ 300 \ miles. }}}[/tex]
Step-by-step explanation:According to Question , a plane travels 120 miles in 2 hours. So here we will use unitary method .
[tex]\bf\implies If \ it \ covers \ 120 \ miles \ in \ 2 \ hours \\\\\bf\implies Then \ one \ mile \ will \ be \ covered \ in \ \dfrac{120}{2} hrs \\\\\bf\implies Hence \ 300 \ miles \ will \ be \ covered \ in \ \dfrac{2}{120}\times 300 hrs = \red{5 \ hours } [/tex]
Hence it will cover 300 miles in 5 hours .Here it was a case of direct proportion in which if two things are directly proportional to each other. If one thing thing increases then the value of second also increases. Here if the time increases then the distance also increases
Joe takes 6 hours to water the plants in his garden. When Joe works with his brother Jack, they take 4 hours
to water the plants in the garden. How long (in hour) would it take jack alone to water the plants in the
garden?
Answer:
2hours
Step-by-step explanation:
48 is 32% of what number?
Answer:
150
Step-by-step explanation:
Because I looked it up
Which set of values will make the following inequality TRUE?
2n + 6 < -12
Answer:
n < -9
Step-by-step explanation:
Answer:
n < -9
Step-by-step explanation:
2n +6 < - 12
2n < -18
n < -9
5. The cone shown below has a slant height of 15 centimeters and a height of 12
centimeters.
15 cm
12 cm
What is the volume of the cone?
Round your answer to the nearest tenth. Do not include the cm3.
1017.9
Answer:
the answer is A
Step-by-step explanation:
5-x=3
Work out the value of 3x^2
Answer:
12
Step-by-step explanation:
[tex]5 - x = 3 \\ \\ 5 - 3 = x \\ \\ 2 = x \\ \\ x = 2 \\ \\ 3 {x}^{2} = 3 {(2)}^{2} = 3 \times 4 = 12[/tex]