Answer:
ac equals -12
Step-by-step explanation:
When 2 or more letters are put together, you need to multiply them.
ac=
a×c=
2×(-6)=
-12
ac= -12
Answer:
-12
Step-by-step explanation:
a = 2 and c = -6
ac= a*c = 2*(-6)= -12
-6x+2y=-18. -3x-2y=54
Answer:
x = -4
y = -21
Step-by-step explanation:
To solve this, we will need to set up a system of equations and get rid of a variable.
-3x - 2y = 54
-6x + 2y = -18
From this, we can see that the 'y' variables can be cancelled out if we add the two together. This means that we must add these equations to each other to cancel out the 'y' variables:
-3x - 2y = 54
-6x + 2y = -18
-------------------- +
-9x = 36
x = -4
Since we have solved for 'x', we can simply plug this value into an equation to find 'y'.
-3(-4) -2y = 54
12 - 2y = 54
-2y = 42
y = -21.
Please help with this!!! My grade depends on it!!!
Answer:
52 degree
Step-by-step explanation:
So using cos again again :v
AC^2 = AB^2 +BC^2 - 2ABBCcosB
AC = 31.796cm
then
BC^2=AB^2 + AC^2 -2ABACcosA
Cos A = 0.61
A=52.17degree
Which of the following is the function for the graph shown?
Answer: A. [tex]y = x^{2} + 6x + 8[/tex]
Step-by-step explanation:
You can plug in the know point of (-3, -1) to each equation to see which one fits. The correct one in this case is [tex]y = x^{2} + 6x + 8[/tex]
Name and classify the basic geometric object each real life object represent using correct mathematical notation. a. The location of a city on a map b. The angle of a recliner c. Row of corn in a garden d. The angle of a lawn chair when laid all the way down e. An arrow f. The angle of a jet taking off at an airport g. The angle a flag pole sits with the ground
Answer:
a. A point
b. Obtuse angle
c. A line segment
d. 180 degrees
e. A ray
f. An acute angle
g. 90 degrees
Step-by-step explanation:
a. A point (a place on a plane that has no dimension)
b. Obtuse angle (any angle over 90 degrees)
c. A line segment (a part of a line)
d. 180 degrees (The angle of a line or line segment)
e. A ray (a line segment with one end extending forever)
f. An acute angle (Any angle under 90 degrees)
g. 90 degrees (the pole is perpendicular to the ground)
Help me for brainliest...
The scale on a map is 1:320 000. What is the actual distance represented by 1 centimere? Give your answer in kilometres.
Answer:
1cm = 320 km?
Step-by-step explanation:
Answer:
[tex]3.2km[/tex]
Step-by-step explanation:
[tex]1 \: : 320000 \\ 1cm = 320000cm[/tex]
[tex]1cm = 100m \\ [/tex]
[tex]1cm = 320000cm \\ 1cm = 3200m[/tex]
[tex]1km \: \: = 1000m[/tex]
[tex]1cm = 3200m \\ 1cm = 3.2km[/tex]
hope this helps
brainliest appreciated
good luck! have a nice day!
Solve for f.
–7f − 9 = 9 − 4f
f =
Answer:
[tex] \boxed{f = -6} [/tex]
Step-by-step explanation:
[tex] = > - 7f - 9 = 9 - 4f \\ \\ = > - 7f + 4f - 9 = 9 \\ \\ = > - 3f = 9 + 9 \\ \\ = > - 3f = 18 \\ \\ = > 3f = - 18 \\ \\ = > f = - \frac{18}{3} \\ \\ = > f = - 6[/tex]
Please answer correctly !!!!!! Will mark brainliest !!!!!!!!!!!!
Answer:
[tex]4x^2 + 12x + 8[/tex]
Step-by-step explanation:
Area of rectangle
= height * width
[tex]=4(x^2 +3x +2)\\= 4x^2 + 12x + 8[/tex]
Answer:
add 2 and 4
Step-by-step explanation:
x²+3x+6
Find the square root of 529/729 .
Answer:
23/27
Step-by-step explanation:
The square root of 529 is 23
while the square root of 729 is 27
Answer:
23/27
Step-by-step explanation:
529=23^2
729=27^2
sqrt{529/729} =sqrt{[tex]23^{2}[/tex]/[tex]27^{2}[/tex]}
= 23/27
Please help: 3x+10=-5. What is x?
Answer:
-5
Step-by-step explanation:
Expand: (1 + 6x)(1 - 6x)
Answer:
6 x(6x)+6x*-1+1(6x)+1*-1 SIMPLIFIED: 36x^2-1
Step-by-step explanation:
Use foil and distributive property
ax+by=(a-b) , bx - ay =(a+b) simultaneous linear equations using cross multiplication
Answer:
[tex]x=1\,,\,y=-1[/tex]
Step-by-step explanation:
Given: [tex]ax+by=a-b\,,\,bx-ay=a+b[/tex]
To solve: the given linear equations
Solution:
Consider the equations:
[tex]A_1x+B_1y+C_1=0\\A_2x+B_2y+C_2=0[/tex]
By method of cross multiplication:
[tex]\frac{x}{B_1C_2-B_2C_1}=\frac{y}{C_1A_2-C_2A_1}=\frac{1}{A_1B_2-A_2B_1}[/tex]
For equations: [tex]ax+by=a-b\,,\,bx-ay=a+b[/tex]
[tex]ax+by-(a-b)=0\\bx-ay-(a+b)=0[/tex]
Take [tex]A_1=a\,,\,B_1=b\,,\,C_1=-(a-b)\,,\,A_2=b\,,\,B_2=-a\,,\,C_2=-(a+b)[/tex]
So,
[tex]\frac{x}{-b(a+b)-a(a-b)}=\frac{y}{-b(a-b)+a(a+b)}=\frac{1}{-a^2-b^2}\\\frac{x}{-ab-b^2-a^2+ab}=\frac{y}{-ab+b^2+a^2+ab}=\frac{1}{-(a^2+b^2)}\\\frac{x}{-(a^2+b^2)}=\frac{y}{a^2+b^2}=\frac{1}{-(a^2+b^2)}\\\frac{x}{-(a^2+b^2)}=\frac{1}{-(a^2+b^2)}\,,\,\frac{y}{a^2+b^2}=\frac{1}{-(a^2+b^2)}\\x=1\,,\,y=-1[/tex]
What is the approximate area of the shaded sector in the circle shown below?
А. 4.68 in2
В. 17.3 in2
C. 34.6 in 2
D. 9.36 in2
Answer:
Area for sector = arc measure/360 degrees times pir^2
145 degrees/360 degrees times pi3.7^2 =
0.40277 times 13.69pi =
17.314in.^2 or B.
The slope of the line whose equation is 6x = 4y - 7 is 1. 4 2. 2/3 3. 3/2
Answer:
3/2
Step-by-step explanation:
Divide by 4 to get 6x/4 = 3x/2
Jennifer bought 1 apple and 3 oranges for 5.10 and Linda bought 5 oranges and 1 apple for 7.50 what is the price of 1 apple and 1 orange
Answer:
$2.70
Step-by-step explanation
Jennifer and Linda both bought one apple, but they bought different numbers of oranges. Looking at the numbers, we see that Linda bought 2 more oranges than Jennifer (they bought the same number of apples, so disregard apples for now, we will look at them later).
Subtracting Jennifer's cost from Linda's cost, 7.50 - 5.10 = 2.40
So, we know that 2 oranges cost $2.40, so 1 orange will then cost $1.20.
Now we know the cost of 1 orange. So, we can find the price of an apple by finding the cost of 3 oranges. 3 x 1.20 = 3.60. So, Jennifer's 3 oranges cost 3.60, and subtract this cost from the total cost and we find that 1 apple costs $1.50.
Add the price of 1 apple and 1 orange. $1.50 + $1.20 = $2.70
Peter is making an "X marks the spot" flag for a treasure hunt. The flag is made of a square white flag with sides of 12 centimeters. He will make the "X" by stretching red ribbon diagonally from corner to corner.
How many centimeters of ribbon will Peter need to make the "X"?
Round your answer to the nearest centimeter.
Answer: 34 cm
Step-by-step explanation:
Hi, since the situation forms 2 right triangles (see attachment) we have to apply the Pythagorean Theorem (to one triangle)
c^2 = a^2 + b^2
Where c is the hypotenuse of the triangle (in this case the distance between corners) and a and b are the other sides.
Replacing with the values given:
c^2 = 12^2 + 12^2
c^2 =144+144
c^2 = 288
c = √288
c = 16.97 cm = 17 cm (rounded)
The other diagonal has the exact same lenght (because the flag is a square)
So, we have to multiply the length of the ribbon by 2:
17 x2 = 34 cm
Feel free to ask for more if needed or if you did not understand something.
Answer:
34
Step-by-step explanation:
I did it on Khan
Circle M has the central angle LAMB with a measure of 63º. Which of the following statements does not represent the
circle M?
O AB is a minor arc
O mAB=63
The center of the circle is point M.
O AB is a major arc
Answer:
O AB is a major arc
Step-by-step explanation:
Circle M has the central angle LAMB with a measure of 63º
Which of the following statements does not represent the circle M?
----------------
O AB is a minor arc
yes, it is 63º, less than halfO mAB=63 º
yesO The center of the circle is point M.
yesO AB is a major arc
no, it is not more than halfJamila babysits to earn money. The mean amount she
earns each time she babysits is $24. If she babysits
nine evenings and earns the following amounts: $15,
$20, $10, $12, $20, $16, $18, and $25, how much did she
earn the ninth evening?
Answer:
$80Step-by-step explanation:
Give jamila's Mean earning = $24
let her ninth earning be x
we know that mean= (∑sumation of earnings)/number of earnings
[tex]24= \frac{15+20+ 10+ 12+ 20+ 16+ 18+ 25+x}{9}[/tex]
[tex]24= \frac{136+x}{9} \\24*9=136+x\\216=136+x\\x=136-216\\x=80[/tex]
Her ninth earning is $80
Jada and Noah wanted to find the total volume of a cube and a rectangular prism. They know the prism's volume is 20 cubic units, and they know the cube has side lengths of 10 units. Jada says the total volume is 27,000 cubic units. Noah says it is 1,020 cubic units. Here is how each of them reasoned: Jada's method: Noah's method: 20 + 10^3 20 + 10^3 30^3 20 + 1000 27,00 1,020 Question: Do you agree either of them? Explain
Answer:
Only Noah is correct.
Step-by-step explanation:
Volume of the cube = 10^3 = 1000 units.
Total volume of the cube + the prism = 1000 + 2
= 1020 cubic units.
Answer:
Only Noah is correct.
Step-by-step explanation:
Volume of the cube = 10^3 = 1000 units.
Total volume of the cube + the prism = 1000 + 2
= 1020 cubic units.
Step-by-step explanation:
Aball is thrown downward from a window in a tall building. Its position at time tin seconds is s = 16t ^ 2 + 32t , where s is in feet. How long to the nearest will the ball to fall 276 ?
Answer:
3secondsStep-by-step explanation:
If a ball thrown downward from a window in a tall building is modeled by the equation, s = 16t² + 32t where s in feet, in order to know the time it will take to fall a distance of 276, we will substitute s = 276feet into the equation and calculate for the value of t as shown;
276 = 16t² + 32t
16t² + 32t = 276
Dividing through by 4
4t² + 8t = 69
4t² + 8t - 69 = 0
Using the general formula to find t
t = -b±√b²-4ac/2a
a = 4, b = 8 and c = -69
t = -8±√8²-4(4)(-69)/2(4)
t = -8±√64+1104/8
t = -8±√1168/8
t = -8±34.176/8
t = -8+34.176/8 or -8-34.176/8
t = 3.272 or -5.272
neglecting the negative time, t = 3secs to the nearest seconds
It will take the all 3secs to fall 276 feets
5. Shirley buys a fax machine and sells it to De
at a gain of 25% on the cost price. Devi then ses
the fax machine to Amirah at a loss of 250 on the
price at which she buys it from Shirley. If Amirah
pays $360 for the fax machine. how much die
Shirley pay for it
Answer:
Shirley bought a fax machine and sells to Devi at a profit of 25% on the cost price.
Shirley buy price:: x
Devi buy price:: 1.25x
Devi sells the fax machine to Amirah at a loss of 250 on the price which she buys it from Shirley.
Amirah buy price = 1.25x -250
if Amirah pays $360 for the fax machine,how much did Shirley pay for it?
Equation:
1.25x - 250 = 360
1.25x = 360 + 250
x = 610 / 1.25
x = 488
Ans: x = $488 (Price Shirley paid)
given the graphed function below which of the following ordered pairs are found on the inverse function
Answer:B
Step-by-step explanation:
Answer: A
Step-by-step explanation:my answer was A and it was correct
An empty cup in the shape of a cylinder (pictured below) is being filled with water.
7
cm
7 cm
3
cm
3 cm
The cup is filled at a constant rate. The table below shows the amount of water in the cup at specific times.
Number of seconds Amount of water
(
cm
3
)
(cm
3
)left parenthesis, start text, c, m, end text, cubed, right parenthesis
0
00
0
00
3
33
75
7575
6
66
150
150150
Find the percent of the cup that is filled with water after
7
77 seconds.
Use
3.14
3.143, point, 14 for
π
πpi and round your final answer to the nearest percent.
%
Answer:
The answer is 88%
After 7 seconds the cup is about 88% filled with water.
Joe spent $48 on fruit at the grocery store. He spent a total of $50 at the store. What percentage of the total did he spend on fruit?
Answer:
96%
Step-by-step explanation:
Take the amount spent of fruit and divide by the total
48/50
Percent means out of 100 so multiply the top and bottom by 2
96/100
96%
Answer:
If Joe has a total of 50 dollars and uses only 48 dollars and you are trying find the percentage of how much he spent, all you need to do is take the amount of money he use dives it by how much money he had in the beginning. Then multiply the number by 100 to get the percentage.
48/50=.96
.96*100=96%
In total he spent 96% of his money.
What is the range of the function shown in the graph?
Answer:
D. -∞ < y < 5
Step-by-step explanation:
The range are all the possible values for y that the function can take. In the graph we can see that the highest value for y is 5 and there isn't a lowest value for y. It means that the range are values between -∞ and 5.
So the range is:
-∞ < y < 5
what is an equation of a line that is perpendicular to the line whos equation is
2y+3x=1
[tex]\text{First, simplify the equation into slope intercept form:}\\\\2y+3x=1\\\\2y=-3x+1\\\\\text{Divide by 2}\\\\y=-\frac{3}{2}x+1\\\\\text{Now, the perpendicular line is the opposite of the slope, and the opposite}\\\text{value}\\\\\text{Since our original equation is negative, the perpendicular lien will be positive}\\\\\text{And then you would just flip the fraction}\\\\\text{Your perpendicular line should be:}\\\\\boxed{y=\frac{2}{3}x+1}[/tex]
Is the relation a function
Yes
No
Answer:
Yes
Step-by-step explanation:
As long as the input has an output it will always be a function.
Answer:
Yes
Step-by-step explanation:
Because there isn't a number in the input colum that is repeated like:
1
1
2
3
Instead each number is individual and they aren't repeated.
If they were repeated then it would NOT be a function.
Have a good day. :)
Hope this helps!
(brainliest would be appreciated)
Kai bought 6 new Pokemon cards to add to his collection. The next day, his dog ate half his collection! There are only 27 cards left now. How many cards did Dan start with?
HELP ASAP PLEASE!!! A patient is to take 60 milligrams (mg) of an antibiotic on day 1, take 45 milligrams (mg) on day 2, take 30 milligrams (mg) on day 3 and take 15 milligrams (mg) on day 4. How many total milligrams (mg) will the patient take? (Show your work)
Answer:
150 mg
Step-by-step explanation:
This is an addition problem. Simply add the mg of the antibiotic that the patient takes each day.
So you would do:
60+45+30+15 = 150
Since you get a result of 150, 150 mg is the answer.
The addition is one of the four fundamental mathematical operations. The patient will take a total of 150 mg of antibiotics.
What is Addition?The addition is one of the four fundamental mathematical operations, the others being subtraction, multiplication, and division. When two whole numbers are added together, the total quantity or sum of those values is obtained.
The total amount of antibiotics the patient will take is,
Total Antibiotic = 60mg + 45mg + 30mg + 15mg = 150 mg
Hence, the patient will take a total of 150 mg of antibiotics.
Learn more about Addition:
https://brainly.com/question/14092461
#SPJ2
Juan examines the sequence 1, 3, 4, 7, 11, . . . and draws the conclusion that the next number in the sequence is 18. Which statements regarding the situation are accurate? Check all that apply.
Juan used inductive reasoning.
Juan's conclusion is a conjecture.
Juan's conclusion is not possible.
Juan's conclusion is a counterexample.
Juan based his conclusion on patterns.
Answer:
Juan conclusion is counterexample
Answer:
1, 2, and 5
Step-by-step explanation:
In a box of crayons 2/5 the crayons are green and 1/6 of purple how much greater is the fraction of green crayons than that of purple A) 1/3 B)3/11 C)1/30 D)7/30
Answer: 7/30
Step-by-step explanation: 2/5-1/6= 7/30, if it helps pls mark me as brainliest
