Answer: Yes, the point (3,-9) is a solution to f(x) = -3x
=========================================================
Explanation:
Since y = f(x), we can say that f(x) = -3x is the same as y = -3x
The point (3,-9) means x = 3 and y = -9 pair up together
Lets plug these values into the equation
y = -3x
y = -3(3) .... replace x with 3
-9 = -3(3) .... replace y with -9
-9 = -9
We get the same thing on both sides, so the point (x,y) = (3,-9) is a solution to y = -3x. Consequently, it's also a solution to f(x) = -3x.
Answer:
Step-by-step explanation:
f(x)= -3x
-3(3)= -9
yes, (3, -9) is the solution
What is the equation of the line that passes through the point (-3, 2) and
has a slope of -3?
Answer:
y= -3x -7
Step-by-step explanation:
You can either use y= mx+b or y-y1=m(x-x1)
I will use y= mx+b
y=mx+b
(-3,2) = (x,y) = -3 is x and 2 is y
-3 =m= slope
y=mx+b
2=-3(-3)+b
2= -3 x-3 +b
2= 9+b
you then subtract 9 on both sides because now 9 is positive so you subtract it.
2=9+b
-9 on both sides
-7= b and the final answer is above
your welcome! :)
HOW MUCH???would she need
Answer:
43ft
Step-by-step explanation:
side a = x ft
side b = 10 ft
side c = 18 ft
x = 14.967
rounds to = 15
10 + 18 + 15 = 43
43 ft of fence needed
Is the graph increasing or decreasing over the interval -3 < x <1? *
Answer:
increasing
Step-by-step explanation:
Factor the expression using the GCF
6r-30
Answer:
6(r - 5)
Step-by-step explanation:
GCF here is 6. So divide each term by 6.
6r - 30 = 6(r - 5)
URGENT!!!! PLS HELPP!!!
Answer:
35*36=1260
Step-by-step explanation:
Answer:
35, 36
Step-by-step explanation:
Let the two consecutive positive integers be x and (x + 1)
According to the given information:
[tex]x(x + 1) = 1260 \\ \\ {x}^{2} + x - 1260 = 0 \\ \\ {x}^{2} + 36x - 35x - 1260 = 0 \\ \\ x(x + 36) - 35(x + 36) = 0 \\ \\ (x + 36)(x - 35) = 0 \\ \\ x + 36 = 0, \: \: x - 35 = 0 \\ \\ x = - 36, \: \: x = 35 \\ \\ \because \: x \in \: positive \: integer \\ \\ \therefore \: x \neq \: - 36 \\ \\ \therefore \: x = 35 \\ \\ x + 1 = 36[/tex]
please help. due today
Answer:
x=3
Step-by-step explanation:
The problem can be re-written as :
[tex] \sqrt{3^{x} } \div \sqrt{3} = 3[/tex]
This is because x to the power of 1/2 is the same as the square of x.
multiply both sides by sqrt3
[tex] \sqrt{3^{x} } = 3 \sqrt{3} [/tex]
square both sides
[tex]3 ^{x} = (3)^{2} ( \sqrt{3} )^{2} [/tex]
simplify
[tex]3 ^{x} = 9 \times 3[/tex]
3 to the power of x is equal to 27
3 cubed (to the power of 3) is 27
so x is equal to 3.
hope i helped, and good luck :)
Write the radical expression in simplest radical form. square root of -120
Answer:-12
Step-by-step explanation:
1 + 1 = ? can you help me
Answer:I think its 2
Step-by-step explanation:Im not really sure but i think thats the answer
Answer:
2
Step-by-step explanation:
WHAT WOULD THIS BEEE
A triangle has sides with lengths of 4 meters, 5 meters, and 7 meters.
Is it a right triangle?
Answer:
What is the perimeter of a square with an area of 25 cm^2?
Question 25 options:
5 cm
10 cm
25 cm
20 cm
Answer:
20 cm
Step-by-step explanation:
Answer:
The answer is 5 cm
Step-by-step:
5 x 5 = 25 cm^2
hope this helps
help me pls ❤️❤️❤️ ty to the person who decides to help ❤️
Answer:
8/5
Step-by-step explanation:
this is a slope formula which formats y=mx+b
m being the slope
and b being the y-intercept
so no need to look far, and no need to solve anything but 8/5 would be your y-intercept
:)) have a great day!
Find the value of x.
Answer:
x = 4
Step-by-step explanation:
ΔABC ≈ ΔDBE
set up a proportion of corresponding sides:
BD / BE = BA / BC
BA = 10 - x + x = 10
10-x / 3 = 10 / 5
cross-multiply:
5(10 - x) = 3(10)
50 - 5x = 30
-5x = -20
x = 4
Since 2004, the amount of money spent at restaurants in a certain country has increased at a rate of 5% each year. In 2004, about $500 billion was spent at restaurants. If the trend continues, about how much will be spent at restaurants in 2017
Answer: $1,146 billion
Step-by-step explanation:
First find the number of years between 2004 and 2017.
= 2017 - 2004
= 13 years
To find out such answers, use the future value formula which shows the value of an amount being increased by a certain percentage over a number of periods.
Future value = Amount * ( 1 + rate) ^ number of periods
= 500 * ( 1 + 5%) ¹⁷
= $1,146 billion
A kickball has a radius of 7 inches. Calculate the volume of the kickball. Use 3.14 to for . Volume of a sphere can be calculated by the formula: V=4/3 r^3 (round to the nearest whole number)
Answer:
V = 205 in^3 to the nearest whole number
Step-by-step explanation:
V = 4/3 π r^3
Plugging in the given information:
V = 4/3 * 3.14 * 7^2
V = 205.147.
Pls help me ASAP thank you!!
In which graph does y vary directly as x?
Find (f ° g)(0). *
f(x) = 5x – 4
g(x) = x^2 – 1
O A.3
OB. -9
O c.-4
O D.-17
Answer:
B
Step-by-step explanation:
Remark
I have to represent f(x) as plus +f(x)
I like to show this situation as +f(g(x)) which I think is much clearer.
+f(x) = 5x - 4
Solution
+f(g(x)) = 5(g(x)) - 4 What has happened is that wherever you see an x on the right you put in g(x).
Now on the right, you put whatever g(x) is equal to.
+f(g(x)) = 5(x^2 - 1) - 4
Remove the brackets.
+f(g(x)) = 5x^2 - 5 - 4
And make x = 0
+f(g(0)) = 5*0 - 5 - 4
+f(g(0)) = - 9
Mr. Permenter’s class is selling candy for a fundraiser. The class has a goal of raising $450 for selling c boxes of candy. Each box of candy costs $3.75. How many boxes must they sell to reach their goal?
Write and solve the equation for the scenario. Show all work
Answer:120 boxes.
Step-by-step explanation: what I did was divided 450 by 3.75 and got 120. So therefore, they must sell 120 boxes in order to meet the findrasisng goal.
Answer:
harder daddy
Step-by-step explanation:
-6(m – 2) = 30
i need to show work , someone help
Answer:
-6m+12=30
-6m=18
m=-3
Step-by-step explanation:
Answer:
m = -3
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of EqualityStep-by-step explanation:
Step 1: Define
-6(m - 2) = 30
Step 2: Solve for m
[Division Property of Equality] Divide -6 on both sides: m - 2 = -5[Addition Property of Equality] Add 2 on both sides: m = -3Please help!
Convert 12.5 to a fraction
Answer:
12 1/2
Step-by-step explanation:
Answer:
25/2.... DON'T WORRY... I AM CORRECT
Also if i can, could I have brainliest...
please help me, with a real answer.
Answer:
I believe the answer is B
What is the slope of the line that passes through the points (7,0) and (4,-9)?
Answer:
3
Step-by-step explanation:
We can use the slope formula
m = ( y2-y1)/(x2-x1)
= ( -9 -0)/(4 - 7)
= -9/-3
= 3
According to this partial W-2 form, how much money was paid in FICA taxes?
A)$497.13
B)$2622.80
C)$5639.88
D)$7268.42
Answer:
2622.80
Step-by-step explanation:
I just took the test and made a 100%
Calculate the missing number in a ratio. ?:0.2 = 7:6
9514 1404 393
Answer:
? = 7/30 = 0.233...(repeating)
Step-by-step explanation:
Write the ratios as fractions, then multiply by the denominator under the unknown.
[tex]\dfrac{\text{?}}{0.2}=\dfrac{7}{6}\\\\\text{?}=0.2\times\dfrac{7}{6}=\dfrac{2}{10}\times\dfrac{7}{6}\\\\ \boxed{\text{?}=\dfrac{7}{30}=0.2\overline{3}}[/tex]
WILL GIVE BRAINLEST
The cafeteria at school offers pizza with thick (K) or thin (N) crust and with pepperoni (P), sausage (S), or extra cheese (E). The tree diagram for the offerings is shown below.
What is the probability, as a fraction, that a student will choose a thick crusted pizza with either pepperoni or sausage?
Answer:
1/3 chance that you will choose a pizza Witt a thick crust and have topping of either pepperoni or sausage
Show that the statement is true. If ST has endpoints S(-6, -3) and T(0,3), then the midpoint M of ST lies
on the x-axis.
The midpoint M is
D. M lies on the (select), since the y-coordinate is....
Help asap please
Answer:
Use the midpoint formula
Step-by-step explanation:
(-6 + 0 ) ÷ 2 , (-3 + 3) ÷ 2
M = ( -3 , 0) which lies on the x axis
The midpoint M of ST lies on x axis is true
the midpoint M is (-3,0)
M lies on x axis because the y coordinate is 0
Given :
ST has endpoints S(-6, -3) and T(0,3)
Lets find out the midpoint M using midpoint formula
[tex](\frac{x_1+x_2}{2} ,\frac{y_1+y_2}{2} )[/tex]
Here our (x1,y1) is (6,-3) and (x2,y2) is (0,3)
Now apply the midpoint formula to find out midpoint M
[tex](\frac{-6+0}{2}, \frac{-3+3}{2})\\(-3,0)[/tex]
So the midpoint M is (-3,0)
M lies on x axis because the y coordinate is 0
Learn more :https://brainly.com/question/24472059
Find the value of x in the triangle shown below.
32
9
3
Choose 1 answer:
<= V27
B
2= 90
C
2 = 6
D
12
Answer:
Rounding this off to the nearest hundred, we get that x is 12 units long.
Step-by-step explanation:
Phil is making a number cube out of cardboard He traces one face of the number cube onto a coordinate grid The coordinates of two opposite vertices of the face are (4, 8) and (12, 16) What is the surface area, in square units, of Phil's entire number cube?
=============================================================
Explanation:
Let A = (4,8) and B = (12,16)
Form point C at the location (12,8). Note how points A and C are on the same horizontal level, or they have the same y coordinate.
The distance from A(4,8) to C(12,8) is 12-4 = 8 units. Ignore the y coordinates and subtract the x coordinates. This trick only works for horizontal line segments.
So we can see that each square face has a side length of 8 units. The area of each square face is 8^2 = 8*8 = 64 square units.
There are six of these faces, so 6*64 = 384 square units is the total surface area of the number cube.
NEED HELP ASAP In the figure below, you have two congruent triangles. Find the value of X
Answer:
x=3 cm
Step-by-step explanation:
x/3=5/5
x=3
How does the volume of a sphere with a radius 2 cm compare to the volume of a sphere with a radius 1 cm?