Answer:
80
Step-by-step explanation:
20+20+20+20
add it all up= 80
Which of the following expressions is equivalent to 8.8.8.8.8.8?
Answer:
8^6
Step-by-step explanation:
This just means that 8 is being multiplied by itself 6 times
Math question pls help
Answer:
y = x + 3
Step-by-step explanation:
This is because the number is increasing by three each time and if you substituted the variable x with a number the answer is true.
Last month Eric spent 87.00 dollars on games. This month he only spent $92.00. What
was the percent change?
Answer:
The change was 5.75%, hope that helped.
Step-by-step explanation:
han wants to ride his bke 24 miles. how long willit take him 3 miles pur hour?
A cylinder and cone have the same height and radius. The height of each is 5 cm, and the radius is 2 cm.
Calculate the approximate volume of the cylinder. Use 3.14 for pi. Do not include units.
Answer:
12rhehrhehrhjnehrhrhehrhehehrrhrjejejej
Answer:
Step-by-step explanation:
Use 3.14 for the pi DO NOT INCLUDE UNITS
What is the area of the arrow
Answer:
20.25 ft
Step-by-step explanation:
area of the triangle = 12.25 ft
area of rectangle = 18ft
= 20.25 ft
1. Choose the statement that describes the value of the square root of 24.
The value is between 4 and 4.5
The value is between 4.5 and 5
The value is between 5 and 5.5
The value is between 5.5 and 6
Answer:
4.5 and 5
Step-by-step explanation:
The √24 is 4.89879
to one decimal place is 4.9
Approximately 5
Jack is going to drive from his house to City A without stopping. An equation that determines Jack's distance from City A t hours after leaving his house is D=220-55t. What is the y-intercept of the equation and what is its interpretation in the context of the problem?
Delta Math
The y-intercept represents the distance between city A and house which is 220 units.
What is a linear equation?It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.
If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.
We have an equation that determines Jack's distance from City A t hours after leaving his house:
D = 220 - 55t
To find the y-intercept plug t = 0
D = 220 units
The y-intercept is (0, 220)
The equation represents the distance as Jack is closer to city A the distance between Jakie and city A is decreasing.
At t = 0
D = 220 units
When Jack is at home the distance between city A and the house is 220 units.
Thus, the y-intercept represents the distance between city A and house which is 220 units.
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What is the probability that they both choose a card labelled dog?
Which choice is equivalent to the expression shown below? -3(3y-2x) +2(5x-4y)
Answer:
-17y + 16x
Step-by-step explanation:
-3(3y - 2x) + 2(5x - 4y) = -9y + 6x + 10x - 8y = -17Y + 16X.
If it is helpful, plz give me Brainliest.
The equivalent expression to the given expression is -17y+16x.
What is an equivalent expression?Equivalent expressions are expressions that work the same even though they look different. If two algebraic expressions are equivalent, then the two expressions have the same value when we plug in the same value for the variable.
The given expression is -3(3y-2x) +2(5x-4y)
Here, -3×3y+ (-3)×(-2x) +2×5x-2×4y
= -9y+6x+10x-8y
= (-9y-8y)+(6x+10x)
= -17y+16x
Therefore, the equivalent expression is -17y+16x.
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Two freight trains are delivering cargo. One freight train is delivering coal, and the other freight train is delivering grain. Their
respective distances traveled after x hours is represented in the table and graph below.
y
Grain Freight Train
405
360
315
Σ 270
Coal Freight Train
Time Distance Traveled
(Hours) (Miles)
1
48
2
96
3
144
4
192
225
180
135
8 90
45
0 1 2 3 4 5 6 7 8 9 ►
Time (Hours)
Which freight train is traveling at a faster speed?
OA. Both freight trains are traveling at the same speed.
ОВ.
The coal freight train is traveling at a faster speed.
C.
The grain freight train is traveling at a faster speed.
OD
There is not enough information to determine the speed of the trains.
Answer:
The coal freight train is traveling at a faster speed.
Step-by-step explanation:
The complete question is attached.
Both trains delivery can be represented using coordinates, where y represent the distance traveled and x represent the hours.
For the coal freight train, we can take two points. Let us use (1, 49) and (3, 147). Hence:
[tex]y-y_1=\frac{y_2-y_1}{x_2-x_1} (x-x_1)\\\\y-49=\frac{147-49}{3-1} (x-1)\\\\y-49=49(x-1)\\\\y=49x[/tex]
For the grain freight train, we can take two points. Let us use (0, 0) and (3, 135). Hence:
[tex]y-y_1=\frac{y_2-y_1}{x_2-x_1} (x-x_1)\\\\y-0=\frac{135-0}{3-0} (x-0)\\\\y=45x[/tex]
Since the coal freight train has a slope (49) higher than the grain freight train (45), hence the coal freight train travels faster
Which expression is equivalent to 5(a+b)
Answer:
5a + 5b
Step-by-step explanation:
5(a+b)
= 5a + 5b
Just expand it
What is the length of gh here? Please help me, I have a short deadline and I will give the best answer brainliest :)
Answer:
7
Step-by-step explanation:
Answer:
about 7.3 units
Step-by-step explanation:
the short lengths are 2 and 7, so like i explained earlier, 2^2 + 7^7 = x^2
we can simplify this to 53 = x^2, the so x = √53, which is about 7.3.
please help me i need this grade !
Answer:
Yes, it is a right triangle.
Step-by-step explanation:
Let's use Pythagorean Therom.
a^2 + b^2 = c^2
7^2 + 24^2 = 25^2
49 + 576 = 625
49 + 576 = 625
625 = 625
They both equal which proves that it's a right triangle.
If k(x) = x2 and p(x) = k(x) + n, what is the value of n?
Answer: Value of n is -6
Step-by-step explanation:
If the function f(x) is translated k units up, then its image is g(x) = f(x) + k
If the function f(x) is translated k units down, then its image is g(x) = f(x) - k
The vertex form of the quadratic function is f(x) = a(x - h)² + k, where a is the coefficient of x² and (h, k) is the vertex
The value of n is 1 when the expression k(x) = x² and p(x) = k(x) + n.
What is an expression?An expression contains one or more terms with addition, subtraction, multiplication, and division.
We always combine the like terms in an expression when we simplify.
We also keep all the like terms on one side of the expression if we are dealing with two sides of an expression.
Example:
1 + 3x + 4y = 7 is an expression.
3 + 4 is an expression.
2 x 4 + 6 x 7 – 9 is an expression.
33 + 77 – 88 is an expression.
We have,
We can start by substituting the function k(x) into the expression for p(x):
p(x) = k(x) + n
p(x) = x^2 + n
We don't have enough information to determine the value of n, but we can set up an equation using some other given information. If we know that p(2) = 5, we can substitute x = 2 and solve for n:
p(2) = 2² + n = 4 + n = 5
n = 5 - 4
n = 1
Therefore,
The value of n is 1 when the expression k(x) = x² and p(x) = k(x) + n.
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How many cubic units would take to make a model of a recrangular prisim that is 6 units long x 3 units wide x 2 unita high?
Answer:
Step-by-step explanation:
So, you need 24 unit cubes to make a model of the rectangular prism specified
Find the area of the triangle whose base is 3 inches and height is 10 inches. *
Answer:
(axh)/2 30
Step-by-step explanation:
A square has an area of 81 cm^2?
What is the length of each side?
The length of a rectangle is three times its width. If the area of the rectangle is 75 yd2 , find its perimeter.
Answer:
40
Step-by-step explanation:
Let x = width, then 3x = length, Area = l x w so,
(3x)(x) = 75
3x2 = 75
x = 5 = width, length = 15
Perimeter = 2l +2w = 10 + 30 = 40
Round 3.55 to the nearest tenth.
Answer: 3.6
Step-by-step explanation: if the second number after the decimal point is five or above you would round the first number after the decimal point up.
PLEASE HELP.
The population of Metropolis was approximately 2,600,000 people in 2000. The population began decreasing at a rate of 1.1% every year after 2000.
Which function models the population of Metropolis x years after 2000?
f(x)=0.989(2,600,000)x
f(x)=2,600,000(1.011)x
f(x)=2,600,000(0.989)x
f(x)=1.011(2,600,000)x
Answer:
The answer is C i just took the test.
Answer:
it's C i just took the test
Step-by-step explanation:
Cesium-137 has a decay constant of 0.0231 (a 30-year half-life). If you start with 15 pounds of cesium-137, how much will still be there 30 years later? Round to the nearest tenth.
Answer:
N = 7.5 pounds
Step-by-step explanation:
Formula for the radioactive decay is given by,
[tex]N=N_0e^{-\lambda t}[/tex]
Here, N = Final amount
N₀ = Initial amount
λ = Decay constant
t = Duration of decay
Now we can substitute the values from the given question,
N = [tex]15e^{-(0.0231\times 30)}[/tex]
N = [tex]15e^{-0.693}[/tex]
N = 15(0.5)
N = 7.5 pounds
The function y = -16t+^2 40 represents the height y (in feet) of a water droplet t seconds after falling from an icicle. After how many seconds does the water droplet hit the ground? Round your answer to two decimal places.
Answer:
The water droplet will hit the ground 1.58 seconds after it started falling.
Step-by-step explanation:
The function:
y = -16*t^2 + 40
represents the height of a water droplet t seconds after falling from an icicle.
We want to find the value of t such that the water droplet hits the ground, and this will happen when y = 0.
Then we only need to solve the equation:
0 = y = -16*t^2 + 40
0 = -16*t^2 + 40
16*t^2 = 40
t^2 = 40/16
t = √(40/16) = 1.58
The water droplet will hit the ground 1.58 seconds after it started falling.
Sierra conducted an experiment. She drew a color tile from a bag, recorded the results, and return the tile to the bag. Out of 100 trials she randomly drew a blue tile 46 times, a red tile 38 times, and a green tile 16 times. What is the experimental probability of drawing a red tile?
Option 1: 4/25
Option 2: 23/50
Option 3: 19/50
Option 4: 16/100
I don’t understand please help
Answer:C the number of brushes
Step-by-step explanation:
Z represents the number of brushes, which if it’s 0 it means you’ve not purchased any.
Read carefully and choose the name of the student who made the correct statement ..... HELPPP hurry
HI PLEASE HELP IM KINDA CONFUSED WITH KINETIC ENERGY AND POTENTIAL ENERGY ANYONE CAN HELP?
Answer:
P
K
P
K
P
K
Step-by-step explanation:
If it's not moving, it's potential energy
If it's moving, it's kinetic energy
3x+30=180 degrees, what is the value of the letter x in this problem?
Answer:
50
Step-by-step explanation:
180-30=150/3=50
3x + 30 = 180
-30 -30 subtract 30 on both sides, solve for 180 - 30 which is 150.
___________
3x = 150
__ ___ divide 3 on both sides, solve for 150 ÷ 3 which is 50.
3 3
x = 50, final answer
hope this helps! :)
The length of a rectangle is 8 inches more than twice its width. The area of the rectangle is 120 square inches. How many inches is the length of the rectangle?
Answer:
L = 20 inches
Step-by-step explanation:
w = width
L = length
area = 120
W x L = 120
L - 8 = 2W then L = 2W + 8
substitute for L:
W x (2W + 8) = 120
2W² + 8W -120 = 0
(2W - 12)(W + 10) = 0
2W-12 = 0
2W = 12
W = 6
L = 20
5(
5X
–
10)
=
15 solve it
The value of x for the given equation is [tex]\dfrac{13}{5}[/tex]
What is linear equation in one variable?Linear equation in one variable refers to an equation that can be rearranged in the form [tex]\rm ax + b = c[/tex], where [tex]\rm a \neq 0[/tex]b and c are integers. The equation is solved to determine the value of [tex]\rm x\\[/tex].
Calculations:
[tex]\begin{aligned} 5(5\rm x -10) &= 15\\\\5\rm x - 10 &= \dfrac{15}{5} \\\\5\rm x - 10&= 3\\\\5\rm x &= 3 + 10\\\\5\rm x &= 13\\\\\rm x& = \dfrac{13}{5} \end[/tex]
Therefore, the solution of the equation [tex]5(5\rm x - 10) = 15[/tex] is [tex]\dfrac{13}{5}[/tex].
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