Answer:
the answer will be 3
Step-by-step explanation:
do the parenthesis first
It costs 30 dollars per month for a cell phone plus 10 dollars for every GB of data.
Which expression can be used to represent the cost of a cell phone bill when x is the number of GB of data used?
will give brainliest
Answer:
( 10 × x ) + 30
Step-by-step explanation:
This equation would represent the phone bill because you would have to multiply the GB (x) by 10 before adding it to 30 to find the total amount of money.
plz mark me brainliest if correct
The cost of cell phone is represented by expression, [tex]C=10x+30[/tex]
Total cost :It is given that,
It costs 30 dollars per month for a cell phone plus 10 dollars for every GB of data.
Let us consider that x is the number of GB of data used.
The cost of cell phone is represented by,
[tex]C=30+(10*x)\\\\C=10x+30[/tex]
Thus, the cost of cell phone is represented by expression, [tex]C=10x+30[/tex]
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What is the value of the exponential expression 3,3
A. 18
B. 27
C. 9
D. 81
Answer: B. 27
Step-by-step explanation:
3x3 = 9
9x3 = 27
3^3 = 27
Answer:
c. 9
Step-by-step explanation:
3,3
3*3
3 square
9
A line has a slope of -
and a y-intercept (vertical intercept) of 9.
The first one is correct you take the slope and multiple it by x and then add or subtract your y intercept depending on whether it is positive or negative. In this case it's positive so it would by -3/7x+9
Emily and Mike are sister and brother. Emily has twice as many brothers as sisters, and Mike has as many brothers as sisters. How many girls and boys are there in this family?
Step-by-step explanation:
3x is answer because emily = 2X , mike = x
X + 2x
= 3x
Identifying factors
Does anyone know the answer to this??
Roger restores vintage automobiles. The number of automobiles Roger has restored, f, after n number of years can be described by the equation f(n)=2+5n. What is the rate of change in this situation?
Answer:
The change of rate of the situation is 5.
Step-by-step explanation:
Given f(n) = 2 + 5n. The rate of change is still the same as the slope of the equation. We know that the equation of a line is given as:
f(x) = y = mx + c where m is the slope. In our given equation, f(n) = 2 + 5n = 5n + 2, we see that m = 5 which is our slope.
Therefore, the change of rate of the situation is 5.
Help!
Sarah was standing on a dock next to the ocean. She kicked a soccer ball off the dock to her friend in the water. 4 seconds after she kicked the ball it reached a height of 9 feet above the water. It hit the water 6 seconds later.
Write an equation for the path of the rock in y=a(x-h)^2+k and give the height of the dock that she kicked the ball from. Show your work!
Answer:
1) The equation for the of the ball in y = a·(x - h)² + k is;
y = -16·(x - 5)² + 25
2) The height of the dock, d = -375 feet below the water level
Step-by-step explanation:
1) The question is with regards to quadratic function representing projectile motion
The given parameters are;
The height the ball reaches 4 seconds after Sarah kicked the ball = 9 feet
The time the ball hits the water = 6 seconds after reaching the 9 feet height
The form of the quadratic equation representing the motion is given as follows;
y = a·(x - h)² + k = a·x² - 2·a·h·x + a·h² + k
Let 'x' represent the time of motion of the ball, and let 'a', represent the acceleration due to gravity, we have;
The equation for the ball, y = a·(x - h)² + k
Where;
(h, k) = The coordinates of the vertex
h = The horizontal component of the vertex coordinate = 0
Therefore, we have;
When x = 0, y = d
d = -16·(0 - h)² + k = -16·h² + k
d = -16·h² + k
When x = 4, y = 9 - d
9 - d = -16(4 - h)² + k = -16(4 - h)² + k
When x = 2, y = d
d = -16(2 - h)² + k
When x = 6, y = 9
9 = -16(6 - 5)² + k
When x = 8, y = d
d = -16(8 - h)² + k
-16(8 - h)² - (-16(2 - h)²) = 0
h = 5
From 9 - d = -16(4 - h)² + k = -16(4 - 4)² + k
d = 9 - k
9 = -16(6 - h)² + k
k = 9 + 16(6 - 5)² = 25
d = 9 - k = 9 - 25 = -16
Therefore, h = 5, k = 25
The equation for the of the ball in y = a·(x - h)² + k is therefore;
y = -16·(x - 5)² + 25
2) When x = 0, y = d, ∴ d = -16(0 - 5)² + 25 = -375 feet below the water
The height of the dock, d = -375 feet below the water level
Indiana is hiking at a rate of 5 miles per hour. At this rate, how long will it take her to hike 22 miles?
[tex]v =\dfrac{d}{t}[/tex]
[tex]5 = \dfrac{22}{t}[/tex]
[tex]t = \dfrac{5}{22}[/tex]
She will take [tex]\dfrac{5}{22}[/tex] hours or 13 minutes and 38 secs.
Write an equation in slope intercept form for the line that passes through
(1.8) and (2,11).
Can some one help me I’m in the middle of doing a test and I need the answers
can someone help me with this please?!!
Answer: X
Step-by-step explanation: Because look at the chart
Answer:
It’s b
Step-by-step explanation:
help me please also answer the question correctly
Answer:
he needs 10 c
Step-by-step explanation:
Jorge needs 10 large c because 6 large salads need 10 tomatoes
A recipe for 2 dozen of Mr.M’s cookies calls for 2 1/2 cups of chocolate chips. He is making 6 dozen cookies. How many cups of chocolate chips does he require? Simplify you answer
Determine the rate of change from the table below:
Answer:
Plus 4 miles every 2 hours
Hours= +2
Miles= +4
Which of the sets of ordered pairs represents a function? (5 points)
A = {(2, −2), (5, −5), (−2, 2), (−5, 5)}
B = {(4, 2), (4, −2), (9, 3), (9, −3)}
Group of answer choices
Only A
Both A and B
Neither A nor B
Only B
Answer:
Both a and b
Step-by-step explanation:
Solve the system for a and b:
9 = ab^2
-72=ab^5
Answer:
a = [tex]\frac{9}{4}[/tex] , b = - 2
Step-by-step explanation:
Given the 2 equations
9 = ab² → (1)
- 72 = a[tex]b^{5}[/tex] → (2)
Divide (2) by (1)
[tex]\frac{-72}{9}[/tex] = [tex]\frac{ab^5}{ab^2}[/tex]
- 8 = b³ ( take the cube root of both sides )
[tex]\sqrt[3]{-8}[/tex] = b , that is
b = - 2
Substitute b = - 2 into (1) and solve for a
9 = a(- 2)² = 4a ( divide both sides by 4 )
[tex]\frac{9}{4}[/tex] = a
Nora has an orange rope and a green rope. The orange rope is 9 meters shorter than the green rope. The green rope is 12 meters long. How many meters of rope does Nora have in all?
Answer:
15 m
Step-by-step explanation:
12-9=3 meters of orange rope
so 3 m of orange + 12 m of green
15m in total
Answer
nora has 15 meters
Step-by-step explanation:
12 minus 9 is 3 so u have to add 3
A total of 754 tickets were sold for the school play. They were either adult tickets or student tickets. There were 54 more tickets sold than adult tickets. How many adult tickets were sold?
Answer:
Answer: 350
Step-by-step explanation:
Explanation:
a = adult tickets
s = student tickets
║ a + s = 754
║s = a + 54
Plug s = a + 54 into a + s = 754
a + (a + 54) = 754
a + a + 54 = 754
2a + 54 = 754
2a = 754 - 54
2a = 700
a = 350
Ur amazing if u understand bearings
Sam's "bearing" is simply the direction in which he's moving, which is the angle made with due East.
From point A to point B, his bearing is 335°, and from point B to C, his bearing is 45°. In both cases, the angle is made with due East from the second point. See the sketch for a rough approximation of this. Note that it is not to scale.
To get it into scale, you have to compute the distances traveled along each bearing.
• Moving at 6 km/h for 20 min = 1/3 h would cover a distance of
(6 km/h) • (1/3 h) = 2 km
• Moving at 10 km/h for 15 min = 1/4 h would mean a distance of
(10 km/h) • (1/4 h) = 2.5 km
In your sketch, 1 cm should represent 500 m = 0.5 km, so the arrow from A to B should have a length of 4 cm, while the arrow from B to C should have a length of 5 cm.
I need help with this question
Answer:
34cm
Step-by-step explanation:
bc i konow
Answer:
no, a right angle is 90 degrees. it isn't.
Step-by-step explanation:
the bottom left angle should look like this: L, which it doesn't.
Choose the graph of this equation.
y=−32x−2
__________________________________________________________
Answer:
CStep-by-step explanation:
__________________________________________________________
The answer is C because it matches the other graph from Desmos.
( -1.333,0 ) ( 0,-2 )
( Picture Below )
__________________________________________________________
Hope this helps! <3
__________________________________________________________
The graph of the equation y = -(3/2)x -2 is C.
What is Slope?Slope of a line is defined as the change in the value of y-coordinate with respect to the value of the x-coordinate. It is usually denoted by 'm'.
Slope can also be defined as the tangent of the angle that the line is making with the X-axis.
The equation of a line in slope-intercept form is y = mx + c, where m is the slope and c is the y-intercept.
For y = -(3/2)x -2, m = -3/2 and c = -2
Here slope is negative, so the line will be directing downwards from left to right.
So we eliminate graph B.
y-intercept is the y-coordinate of the point where the line touches with the X-axis. The x-coordinate at that point will be zero.
So we got the a point on the line ( 0, -2 )
Since graph A does not pass through this point, it is also eliminated.
Now we find x-intercept which is the x-coordinate of the point where the line touches with the X-axis. The y-coordinate will be zero there.
So, 0 = -(3/2)x -2
⇒ 2 = -(3/2)x
⇒ x = -4/3
⇒ x = -1.333
So the line touches ( -1.333, 0).
Hence, graph C is the one which satisfies the equation y = -(3/2)x -2.
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What is 2.25% of 3,200 ?
Answer:
72
Step-by-step explanation:
(pls mark me brainliest if u can)
A car is purchased for $16,000. After each year, the resale value decreases by 20%. What will the resale value be after 3 years?
Use the calculator provided and round your answer to the nearest dollar.
Pleaseeee answer correctly
Answer: (I REDID THIS ANSWER)
$128
Step-by-step explanation:
20% off of $16,000 = $3,200
20% off of $3,200 = $640
20% off of $640 = $128
Answer= $128
Directions: Determine how much Marco would be paid
for 10 weeks work.
Marco is initially paid $75 per week and then 2.5%
more each week than the previous week.
Answer:
766.87 is how much he is paid in all.
Step-by-step explanation:
2.5% of 75 is 1.875. 1.875 times 9 is 16.875. 75 times ten is 750. add together to get the whole.
In 10 weeks she will be paid a total of $840 with 2.5% more each week.
What are arithmetic and geometric sequence?An arithmetic sequence is a set of numbers in which every no. next to the previous number has the same common difference
d = aₙ - aₙ₋₁ = aₙ₋₁ - aₙ ₋₂.
In a geometric sequence numbers are written in the same constant ratio(r).
It means every next number is a multiple of a common constant and the previous number.
r = aₙ/aₙ₋₁ = aₙ-₁/aₙ₋₂.
Given, a = 75 and r = 1.025.
We know the sum of a geometric sequence is Sₙ = a(rⁿ - 1)/(r - 1).
∴ S₁₀ = 75(1.025¹⁰ - 1)/(1.025 - 1).
S₁₀ = 75(1.28 - 1)/(0.025).
S₁₀ = 75(0.28)/0.025.
S₁₀ = 840.
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Write the equation in the point-slope form given the points (-5,-4) (3,4)
Write an equation for the locus of points equal distant from the focus
(-4,2) and the directrix y = 4
What is 0.00000078 is sceintific notaion
[tex]7.8 \times {10}^{ - 7} [/tex]
5x - 1 - 2x = 20. Solve for x.
Answer:
x = 7
Step-by-step explanation:
Given
5x - 1 - 2x = 20, that is
3x - 1 = 20 ( add 1 to both sides )
3x = 21 ( divide both sides by 3 )
x = 7
Step-by-step explanation:
5x-1-2x=20
3x-1=20
3x=20+1
3x=21
3x/3=21/3
x=7
-------- hope it helped
need help to solve please
Answer:
[tex]\displaystyle m\angle RTU=73^\circ[/tex]
Step-by-step explanation:
Interior Angle of a Circle
An interior angle of a circle is formed at the intersection of two lines that intersect inside a circle.
Lines AC and BD of the figure attached below intersect forming arcs p and q. The measure of the interior angle x is:
[tex]\displaystyle x=\frac{p+q}{2}[/tex]
The question includes the drawing of a circle with lines US and RV intersecting at point T. The measure of the interior angle RTU is:
[tex]\displaystyle m\angle RTU=\frac{68^\circ+78^\circ}{2}[/tex]
[tex]\displaystyle m\angle RTU=\frac{146^\circ}{2}[/tex]
[tex]\boxed{\displaystyle m\angle RTU=73^\circ}[/tex]
Question 24
In A DEF, the bisector of ZF divides the opposite sides into segments that are
4 and 9 in. long. The side of the triangle adjacent to the 4 in segment is 6 in.
long. To the nearest tenth of an inch, how long is the third side of the triangle?
A.13.5
B.27
C.6
D.13
Answer:
1).
Sqrt (7 x 12) = 9.165
2).
Altitude = Sqrt (14 x 8) = 10.583
3).
If FG is the angle bisector of angle F in triangle DEF,
DF/EF = DG/EG
6/EF = 4/9
EF = 13.5 in long.
4).
In triangle QRS, XY is parallel to SR.
SX/XQ = RY/YQ
3/2x = 4.5/7.5
9x = 22.5
x = 2.5
The length of QS
= SX + 2x
= 3 + 5
= 8
did this help sorry if it didnt
Step-by-step explanation: