Answer:
−3 < x ≤ 0
Step-by-step explanation:
1 < x + 4 ≤ 4
Add -4 to all parts
1 + −4< x + 4 + −4 ≤ 4 + −4
Put pairs in bracket to avoid confusion
(1 + −4) < x (+ 4 + −4) ≤ (4 + −4)
−3 < x ≤ 0
1. At 2 p.m., a car is 100 km east of Toronto, driving eastward at 80 km/h. A truck leaves Toronto at 2 p.m. and is driving eastward at 120 km/h. At what time will the truck pass the car? How far east of Toronto will they be when this occurs?
The time at which the truck will pass the car is 2.5 hours and the distance at which the car and truck meet is 200km.
What is velocity?Velocity is defined as the ratio of the distance moved by the object at a particular time. The velocity is a vector quantity so it needs both the magnitude and the direction.
Given that at 2 p.m., a car is 100 km east of Toronto, driving eastward at 80 km/h. A truck leaves Toronto at 2 p.m. and is driving eastward at 120 km/h.
The time will be calculated as:-
Relative velocity = Distance / Time
Time = Distance / Relative velocity
Time = 100 / 120 - 80
Time = 2.5 Hours
Distance of car = Speed x time = 80 x 2.5
Distance of car = 80 x 2.5
Distance of car = 200 Km
Therefore, the time at which the truck will pass the car is 2.5 hours and the distance at which the car and truck meet is 200km.
To know more about velocity follow
https://brainly.com/question/25749514
#SPJ1
5 plus 5 equals what?
Answer: 10
Step-by-step explanation: 1 1 1 1 1+ 1 1 1 1 1= 1 1 1 1 1 1 1 1 1 1 or 10
HELP...........................! !
Answer:
[tex] \sf \large( \frac{2}{5} ) {}^{14} [/tex]
Step-by-step explanation:
=((2/5)^4(2/5)^3)^2
=((2/5^4+3))^2
=((2/5^7))^2)
=(2/5)^14
Solve the system of equations. -5a + 7b = 2 -15a + 21b = 6
It should be noted that solving the system of equations. -5a + 7b = 2 -15a + 21b = 6 will give 0 and this implies that it has no solution
How to illustrate the information?It should be noted that we simply want to solve the equations given:
-5a + 7b = 2 ................ i
-15a + 21b = 6 ............. ii
Divide equation ii through by 3. This will give:
-5a + 7b = 6
Therefore, the equations will be:
5a + 7b = 2 ................ i
5a + 7b = 2 ................ ii
Subtract equation ii from i
This will be (5a + 7b = 2) - (5a + 7b = 2) = 0
Therefore, it should be noted that solving the system of equations. -5a + 7b = 2 -15a + 21b = 6 will give 0 and this implies that it has no solution
Learn more about equations on;
brainly.com/question/13763238
#SPJ1
The longest side of a triangle is a cm.
The second side is bcm shorter than the first side.
The third side is half as long as the second side.
Write an expression, in its simplest form, for the perimeter of
the triangle
Answer:
P = 2.5a - 1.5bStep-by-step explanation:
The sides of the triangle are:
a cm,a - b cm,(a - b)/2 cm.Its perimeter is the sum of the three sides:
P = a + a - b + (a - b)/2 = 2a - b + 0.5a - 0.5b = 2.5a - 1.5bJillion exercise 5 times a week. She runs 3 miles each morning and bikes in the evening. If she exercises a total of 30 miles for the week, how many miles does she bike each evening?
Answer: 3 miles
Step-by-step explanation:
Total = 30 miles per week
Weekly runs in the morning= 3*5 = 15 miles per week
Bikes= 30-15 = 15 miles per week
Bikes each day= 15/5 = 3 miles
Joel, Ben, and Luke are each wearing a hat with a number on it. Each person adds the two numbers on the other two hats, giving totals of 11, 17, and 22. What is the largest number on a hat?
Solving a system of equations, we conclude that the largest number on a hat is 14.
What is the largest number on a hat?
We have 3 hats, each one with a number that we will define as:
x, y, and z.
We know that by adding pairs of these numbers we get 11, 17 and 22, then we can write a system of equations:
x + y = 11
x + z = 17
y + z = 22
Clearly z is the largest number, so we want to find z.
First, we can isolate x on the first equation so we get:
x = 11 - y
Replacing that in the second equation giveS:
x + z = 17
(11 - y) + z = 17
Now our system is:
y + z = 22
(11 - y) + z = 17
Isolating y in the first one we get:
y = 22 - z
Now we can replace that in the other equation:
(11 - (22 - z)) + z = 17
Now we can solve this for z.
11 - 22 + z + z = 17
-11 + 2z = 17
2z = 17 + 11 = 28
z = 28/2 = 14
z = 14
We conclude that the largest number on a hat is 14.
If you want to learn more about systems of equations:
https://brainly.com/question/13729904
#SPJ1
What is the value for
y
in the equation
y
=
x
2
when
x
=
3
?
Mary will rent a car for the weekend she can choose one or two plans the first plane has it in initial fee of $55 and cost an additional $0.12 per mile driven the second plan has an initial fee of $50 in cost an additional $0.17 per mile driven
By using the concept of linear equations, amount of driving when two of these plans cost the same will be at x = 100.
The cost when two plans cost the same is $67.
What is Linear Equation in one variable?The linear equation in one variable is written as ax + b = 0, where a and b are two integers and x is a variable. This equation has only one solution.
Given data:
First plan has it in initial fee of $55 and cost an additional $0.12 per mile.
Second plan has an initial fee of $50 in cost an additional $0.17 per mile.
Linear Equation for first plan: f(x) = 55+0.12x
Linear Equation for second plan: s(x) = 50+0.17x
Here, x is a variable.
To find out the distance when the two plans cost the same, we'll need to solve:
55 + 0.12x = 50 + 0.17x
55 - 50 = 0.17x- 0.12x
5 = 0.05x
x = 5/0.05
x = 100
The cost when the two plans cost the same :
f(100) = 55 + 0.12(100)
f(100) = $67
s(100) = 50 + 0.17(100)
s(100) = $67
Hence, two of the plans will cost the same at x=100 and cost will be $67.
To learn more about linear equations, visit:
https://brainly.com/question/13738061
#SPJ4
I cant find my answer please help!
Step-by-step explanation:
we are calculating miles.
when we have speed, which is mph or miles/hour. what do we have to multiply it with to get miles ? hours !
miles/hour × hour = miles
so, in the function D(x) the speed 60 mph has to be multiplied by the hours spent driving to get the driven miles.
x = hours spent driving
the domain is the interval or set of all valid x (input) values. the range is the interval or set of all valid y (function result) values.
so what are valid x (number of driving hours) values ?
it starts with 0, if course (before actually driving). and it goes up to 4 (after 4 hours the 240 miles are "done").
the domain is
0 <= x <= 4
and the range ? that is all the function result values for the valid x values.
for x = 0 this starts at 240.
and goes down for x = 4 to 0.
the range is
0 <= y (= D(x)) <= 240
One number is a lot more than another one.
Both numbers are greater than 100.
What could the two numbers be?
The table below shows how much Joe earns, y, after working x hours.
Joe’s Earnings
Hours worked
Money earned
4
$30
10
$75
12
$90
22
$165
The relationship between money earned and hours worked is linear. Joe computes the slope between (4, 30) and (12, 90), then computes the slope between (4, 30) and (10, 75). How do the two slopes compare?
The slope between (4, 30) and (12, 90) is greater because the ordered pairs are farther apart on the x-axis.
The slope between (4, 30) and (12, 90) is greater because the ordered pairs are farther apart on the y-axis.
The slope between (4, 30) and (12, 90) and between (4, 30) and (10, 75) is the same.
The slope between (4, 30) and (12, 90) is less because 4 is a factor of 12 and 30 is a factor of 90.
The slope between (4, 30) and (12, 90) and between (4, 30) and (10, 75) is the same.
What is slope?Slope is the 'steepness' of the line, also commonly known as rise over run. slope is dividing the change in the y-value between two points over the change in the x-value.
given co-ordinates:
(4, 30), (10, 75), (12, 90), (22, 165)
Now, the slope between (4, 30) and (12, 90)
m= ( 90-30)/ (12-4)
m= 60 / 8
m = 7.5
and, the slope between (4, 30) and (10, 75)
m= ( 75-30)/ (10-4)
m=45 / 6
m= 7.5
Hence, The slope between (4, 30) and (12, 90) and between (4, 30) and (10, 75) is the same.
Learn more about slope here:
https://brainly.com/question/1528466
#SPJ1
What does pin stand for? a. principal investment number b. permission initiating number c. percent increase number d. personal identification number please select the best answer from the choices provided a b c d
Answer:
The answer is D.
Step-by-step explanation:
Answer:
in this case the answer is D
Step-by-step explanation:
your welcome
Mother, who went to the market with Rs 500 in hand, spent Rs 300 to buy vegetables and Rs 150 to buy fruits. (i) What fraction of the money in hand did she spend on vegetables?
Answer:
3/5
Step-by-step explanation:
500 is the money she started with if you put that over the money she spent on vegetables it would be 300/500 when simplified it's 3/5
Find the quotient of 4 4/5 divided 4/5. Explain how you can use the GCF to write your answer I. Simplest form.
Answer:
5/4 Quotient[24/5] and 6
Step-by-step explanation:
5/4 Quotient[24/5]
Simplify the following:
(4 + 4/5)/(4/5)
Multiply the numerator of (4 + 4/5)/(4/5) by the reciprocal of the denominator. (4 + 4/5)/(4/5) = ((4 + 4/5)×5)/4:
((4 + 4/5)×5)/4
Put 4 + 4/5 over the common denominator 5. 4 + 4/5 = (5×4)/5 + 4/5:
(((5×4)/5 + 4/5) 5)/4
5×4 = 20:
((20/5 + 4/5)×5)/4
20/5 + 4/5 = (20 + 4)/5:
(((20 + 4)/5)×5)/4
20 + 4 = 24:
(24/5×5)/4
24/5×5 = (24×5)/5:
((24×5)/5)/4
((24×5)/5)/4 = (24×5)/(5×4):
(24×5)/(5×4)
(24×5)/(5×4) = 5/5×24/4 = 24/4:
24/4
The gcd of 24 and 4 is 4, so 24/4 = (4×6)/(4×1) = 4/4×6 = 6:
Answer: 6
The pawpaw shown has the same mass as the total mass of 8 mangoes of the same size. An orange has 2/5 the mass of a mango. What is the mass, in kilograms, of 3 mangoes and 5 oranges together?
The mass of 3 mangoes and 5 oranges together is 5x kg.
Let the mass of mangoes be 'x'
Given the total mass that pawpaw has = a total mass of 8 mangoes
= 8x
mass of an orange = 2/5 the mass of a mango
= 2/5 * x
Now, the mass of 3 mangoes and 5 oranges together as
= 3 * mass of mangoes + 5 * mass of orange
= 3 * x + 5 * 2/5 * x
= 3x + 2x
= 5x kg
The mass of 3 mangoes and 5 oranges together is 5x kg.
To learn more about these problems click below
https://brainly.com/question/28392994
#SPJ9
(2am³n) (-3am⁴)
pa sagot. thanks
Answer:
if you just want to simplify, -6a^2 m^7 n
Step-by-step explanation:
I dont understand this i pick the right ones but it say im wrong can someone correct me??
Answer:
The two in the middle?
the volume of right circular cylinder a is 22 cubic centimeters. what is the volume, in cubic centimeters, of a right circular cylinder with twice the radius and half the height of cylinder a?
The new volume of the right circular cylinder is 44 cubic centimeter.
The formula for the volume of the cylinder is given as
V = Πr^2h (1)
We have been given that, V = 22 cubic centimeters
Now we need to find the volume of the cylinder which is denoted by V’ whose,
r = 2r
and, h = h/2
Now putting the required values in equation (1) we get
V’ = Π(2r)^2(h/2)
V’ = Π4r^2(h/2)
V’ = 4/2(Πr^2h)
V’ = 2V [as V = Πr^2h]
V’ = 2*22 cubic centimeter
V’ = 44 cubic centimeter
Hence the new volume of the right circular cylinder is 44 cubic centimeter
Learn more about volume of cylinder here : https://brainly.com/question/9554871
#SPJ4
i hope someone can help me here, please don't answer nonsense!
Answer:
f(6) = 5f(a) = 15/(a -3)Step-by-step explanation:
You want to find f(6) and f(a) when f(x) = 15/(x -3).
SubstitutionTo evaluate a function, put the argument where the variable is and simplify as needed.
F(6)Put 6 where x is:
f(6) = 15/(6 -3) = 15/3
f(6) = 5
F(a)Put 'a' where x is:
f(a) = 15/(a -3) . . . . . . cannot be simplified
the radian measure of an angle theta is the length of the arc correct: your answer is correct. that subtends the angle in a circle of radius
We know that an arc is a part of the entire perimeter of a circle.
Radian is defined as a unit of plane angular measurement that is equal to the angle subtended by the circle at the center by an arc that is of the length equal to the radius
We also know that the circle as a whole contains 2π radians
we know that s=rΘ
S=rθ represents the central angle in radians and r is the length of the radius.
Thus we can say that radian measure of an angle theta is the length of the arc.
For further reference:
https://brainly.com/question/7721249?referrer=searchResults
#SPJ4
Altogether, tom and sarah have 32 baseball cards. if sarah has three times as many baseball cards as tom, how many does each of them have
tom has 8 cards and sarah has 24 cards .
Explain how many cards sarah and tom has?tom and sarah total baseball cards =32
sarah has three times as many baseball cards as tom
The 2 equations are
1. sarah + tom = 32
2. sarah = [tex]3 \times tom[/tex]
substitute equation 2 in 1.
[tex]3\times tom +tom= 32[/tex]
4 tom = 32
tom = 32/4
tom = 8 cards
sarah = [tex]3\times tom[/tex]
= [tex]3\times 8[/tex]
sarah = 24 cards
To learn more about baseball cards , visit;
https://brainly.com/question/19351127
#SPJ4
Last saturday 16 people worked the at the theater. four people worked the morning shift and 12 worked the evening shift. they earned a total of $1,080.00. what did they earn each?
Earning of each = $33.75
Let's take the earnings of each person to be x.
Total person working at the theater = 16 + 4 + 12
= 32
Now the total earnings of the people = 32x
Which is given = $1080
So we get an equation
32x = 1080
x = $33.75
Hence we get the earnings of each person = $33.75
To know more about the earnings of the people refer to the link given below:
https://brainly.com/question/5797429
#SPJ4
Please help and answer the parts A and B
A> The equation for the line is y = -0.1x + 2600
B> The value of the car is $16,500
From the table, we know that for every 6000 miles added there is a decrease in the value by $600.
A> So it is the function of one order
y = kx + b
25500 = 5000k + b
24800 = 12000k + b
After equating it we get
b = 26000 and k = -0.1
Now put the value of b and k in the equation, and we get
y = -0.1x + 26000
Therefore the equation is y = -0.1 + 26000
B> When we put the value of x = 95000, we get
y = -0.1 × 95000 + 26000
= 16500
Therefore the cost of the car is $16,500
To know more about the cost refer to the link given below:
https://brainly.com/question/2004396
#SPJ9
You place the following shapes in a bag 5 circles 3 triangles 7 squares and 5 rectangles if you reach in the bag what is the probability you will grab a shape
Answer:
theres a 25% you will grab an apple (work shape is suppose to be circle)
Step-by-step explanation:
Hope this helps
I’m so confused can anyone help me?
Answer:
Following is the answer for your question your question can be done in this manner.
The ratio of dogs to cats are at the kennel is 3:2. there are 20 total dogs and cats at the kennel. how many dogs are at the kennel?
Answer:
12 dogs
Step-by-step explanation:
Ratios are scaleable, so let's look at all of the equivalent ratios of 3:2. However it needs to add up to 20 (the sum will be in parenthesis)
3:2 (Sum of 5)
6:4 (Sum of 10)
9:6 (Sum of 15)
12:8 (Sum of 20) ----> Correct Answer
Ashley is constructing CD such that CD intersects AB at C and is the segment bisector of AB. Select the relationship that must be true.
A) Point C is equidistant from A and B.
B) Point D is equidistant from A and B.
C) Point A is equidistant from C and D.
D) Point B is equidistant from C and D
Answer:
Step-by-step explanation:
a,d
Answer:ad
Step-by-step explanation:
ad
Un granjero coloco una cerca al rededor de su parcela. La parcela mide 10 m de cada lado ya que es un cuadrado. Si puso los postes cada 3/4 de metro ¿cuantos postres coloco?
Greetings from Brasil...
The total length will be: 10+10+10+10 = 40
and
(3/4)m = 0.75m
Then, Rule of 3:
QTD m
1 ------ 3/4
X ------ 40
X = 53.333
Soon 53 posts will be needed
statistical power is influenced by all of the following except . a. significance error b. critical value level
Statistical power is influenced by all of the following except observed test value.
What is statistical power?
If there is a real effect present to detect, the statistical power of a hypothesis test is the likelihood of finding it. When an experiment is complete, power may be calculated and presented to make comments about how confident one could be in the conclusions taken from the study's results. It may also be employed as a tool to calculate the sample size or the number of observations needed to detect an effect in an experiment. You will learn the significance of a hypothesis test's statistical power in this lesson, and you'll learn how to compute power analyses and power curves as part of an experimental design.
To know more about statistical power, visit;
https://brainly.com/question/23091366
#SPJ4