Answer:
Step-by-step explanation:
5.13 - 4.75 = 0.38
4.75 / 0.38 = 12.5
The sum of a number and twice another number is 17. The sum of twice the first number and the second number is 4. What are the two numbers?
a) define the variables
b) write a system of equations
c) solve by elimination
Step-by-step explanation:
Given that,
a + 2b = 17
Also,
2a + b = 4
By adding the above expressions we get,
a + 2b + 2a + b = 17 + 4
3a + 3b = 21.
3 (a + b) = 21
a + b = 21/3
a + b = 7 Let us take 'b' = 10
a + 10 = 7
a = 7 - 10
a = -3
Now let's check by verifying by putting a = -3 and b = 10 in the previous expressions
a + 2b = 17
-3 + (2 × 10) = 17
-3 + 20 = 17
17 = 17
2a + b = 4
(2 × -3) + 10 = 4
-6 + 10 = 4
4 = 4
Therefore, a = -3 and b = 10 [(-3,10)] is the solution.
It usually takes Claude 40 minutes driving at 48 miles per hour to go from home to work. But due to road maintenance today, Claude has to take a detour, which makes the trp 8 miles longer than usual. What is the minimum speed Claude should travel so that he can reach the destination in less than 48 minutes? (1 point) 1. 64 miles per hour 2.50 miles per hour 3. 30 miles per hour 4. 56 miles per hour
Answer:
30 miles per hour
Step-by-step explanation:
i took the test
Answer:
50 miles per hour
Step-by-step explanation:
I actually took the quick check
How many times will 5 go into 6?
Answer:
One time
Step-by-step explanation:
(5x2=10) so 5x1=6
Using the graph provided, find the y-intercept.
Answer:
y-intercept = 2
Step-by-step explanation:
The y-intercept of a graph is simply the point at which the value of y, when x = 0. It is the point at which the y-axis is intercepted by the line.
In the graph provided, the line cuts the y-axis at y = 2, when x = 0.
Therefore the y-intercept of the graph provided = 2.
If I’m tiling a floor of a 10’ x 10’ room and find that 100 tiles will be needed how many tiles will be needed to tile a floor of 20’ x 20’ room
Answer:
400 Tiles
Step-by-step explanation:
20 x 20 = 400
(Length x Width)
Answer:
400
Step-by-step explanation:
Enough that you will need a large piggy bank to take money out of.\
There are 4 squares of equal size that will fit the floor of a 20 by 20 foot room.
Therefore you will need 4 * 100 = 400 tiles.
You could do it by noting that the floor has 20 by 20 tiles which is 20^2 which is 400.
A square and a rectangle have the same perimeter. The length of the rectangle is
4 in. less than twice the side of the square, and the width of the rectangle is 6 in.
less than the side of the square.
Find the perimeter of the square.
Rectangle:
l = 4 inch
b = 6 inch
Perimeter = 2(l + b)
= 2(4 + 6)
= 2(10)
= 20 inch.
Given that,
The perimeter of the rectangle = The perimeter of the square
20 inch = The perimeter of the square
Plz help me ASAP! Below is the question.
Answer:
you are rigjt
Step-by-step explanation:
im a g yeeeeeeee
helppppp please will give brainliest
Answer:
the value of y is 3 more than twice x
Step-by-step explanation:
we find the slope is 2 because 4/2=2
y=2x+b
we put in the first point (1,5)
5=2+b
b=3
y=2x+3
Answer:
i think its c
Step-by-step explanation:
because 4 times 1 is 4 and if u add 1 than u get 5 which is y
im not sure if this is right lmk
An object with initial temperature 120° F is submerged in large tank of water whose temperature is
70°F. Find a formula for F(t), the temperature of the object after t minutes, if the cooling constant is
k= 0.2
F(t)=
Answer:
[tex]F(t)=Ts+(T0-Ts)^{e-0.2t[/tex]
Step-by-step explanation:
Newton's law of cooling states
"that the temperature of a body changes at a rate proportional to the difference in temperature between the body and its surroundings"
Newton's Law of Cooling is given by the formula
[tex]F(t)=Ts+(T0-Ts)^{e-kt[/tex]
Where
F( t ) is the temperature of the object at a given time t
T s is the surrounding temperature
T 0 is the initial temperature of the object
k is the constant
Given k=0.2
Hence the expression is
[tex]F(t)=Ts+(T0-Ts)^{e-0.2t[/tex]
help, please. brainliest.
Answer:
55=1.5i+2.5t
Step-by-step explanation:
How do you find p(a and b) ?
Answer:
Formula for the probability of A and B (independent events): p(A and B) = p(A) * p(B). If the probability of one event doesn't affect the other, you have an independent event. All you do is multiply the probability of one by the probability of another.
Step-by-step explanation:
The price of a new car was $12 500 It is reduced to £11 625 Work out the percentage reduction
What's the diameter of 76cm circle circumference
Answer:
The circumference of a circle is C = 2πr^2 (2nd power) Radius (r) is the distance from the center of the circle to the outside of it. To find radius divide the diameter (d) by 2. The diameter (d) of a circle is the radius (r) multiplied by 2. To find the diameter (d) you need to do C ÷ π.
For example):
Finding diameter - 76/3.14 = 24.19 (d)
Finding radius - 24.19/2 = 12.095 (r)
For her phone service, Kaitlin pays a monthly fee of $10, and she pays an additional $0.07 per minute of use. The least she has been charged in a month is $105.27. What are the possible numbers of minutes she has used her phone in a month? Use m for the number of minutes, and solve your inequality for m.
The equation of this problem is:
0.07m + 10 ≥ 105.27
Subtract 10 from both sides:
0.07m ≥ 95.27
Divide 0.07 on both sides:
m ≥ 1,361
Therefore, the number of minutes that Kaitlyn acquires each month is greater than or equal to 1,361 minutes.
Hope this helps!!
Kay
The possible number of minutes Kaitlin has used her phone in a month is 1361 minutes or more.
Let's set up an inequality to represent Kaitlin's monthly charges. We know that the total cost, C, for the month is the sum of the monthly fee ($10) and the additional charge based on the number of minutes used ($0.07 per minute, which can be written as 0.07m, where m represents the number of minutes used).
So, the inequality can be written as: C = 10 + 0.07m
Now, we are given that the least amount she has been charged in a month is $105.27. Therefore, we can write the inequality:
C ≥ 105.27
Substitute the expression for C from the first inequality: 10 + 0.07m ≥ 105.27
Now, solve for m:
Subtract 10 from both sides of the inequality:
0.07m ≥ 105.27 - 10
0.07m ≥ 95.27
Finally, divide both sides of the inequality by 0.07:
m ≥ 95.27 / 0.07
m ≥ 1361
To know more about possible number ;
https://brainly.com/question/29765042
#SPJ2
Mr. Brown plowed 6 acres in 1 hour. At this rate, how long will it take him
to plow 21 acres?
Answer:
3 and a half hours
Answer:3.5 hours
Step-by-step explanation:
6 acre= 1 hour
60 min ÷6= 10 min for 1 acre
10 ×21= 210
210÷60=3.5 hours
Which statement best explains whether the table represents a linear or nonlinear function?
Input (x) −2 −5 −8 −11
Output (y) 7 4 1 −2
A It is a linear function because there is a constant rate of change in both the input and output values.
B It is a nonlinear function because there is a constant rate of change in both the input and output values.
C It is a linear function because the input values are decreasing.
D It is a nonlinear function because the input values are increasing.
Answer:
It is a linear function because there is a constant rate of change in both the input and output values.
Step-by-step explanation: I took the test
how to solve the equation 8b - 12 = 5b
Answer:
b = 4
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDASAlgebra I
Equality PropertiesStep-by-step explanation:
Step 1: Define equation
8b - 12 = 5b
Step 2: Solve for b
Subtract 5b on both sides: 3b - 12 = 0Add 12 on both sides: 3b = 12Divide 3 on both sides: b = 4Step 3: Check
Plug in b to verify it's a solution.
Substitute: 8(4) - 12 = 5(4)Multiply: 32 - 12 = 20Subtract: 20 = 20And we have our final answer!
The weight of a mandarin orange is about 6 ounces. A basket that weighs 4 ounces will hold m mandarin oranges, the total weight is 70 ounces. Which equation represents the basket of oranges?
Answer:
4 + 6m = 70
the first one
Step-by-step explanation:
please need help on this one
Find the unknown side of the triangle. Urgent
Answer:
13 in
Step-by-step explanation:
It’s a right triangle, so use the Pythagorean Theorem.
12²+5²=c²
144+25=c²
169=c²
√169=c
13=c
The image is basically the question. I am in the middle of this test plz help!
CHECK MY ANSWERS PLEASE!!
1. If OQ and RT are parallel lines which statement is true?
A) OPS is congruent to RSU
B) OPS is congruent to RSP (my answer)
C) OPS is congruent to OPN
D) OPS is congruent to TSU
-----------------------------------------
2. If OQ and RT are parallel lines which statement is true?
A) RSP is congruent to RSU
B) RSP is congruent to PST
C) RSP is congruent to TSU
D) RSP is congruent to OPS (my answer)
Answer:
1. A) OPS is congruent to RSU
2. C) RSP is congruent to TSU
Step-by-step explanation:
1. Since OQ and RT are parallel lines that are cut across by the transversal line, NU, therefore, angle OPS and angle RSU are corresponding angles formed. Corresponding angles are congruent.
✅Therefore: A) OPS is congruent to RSU. OPTION A IS TRUE.
❌OPS and RSP are consecutive interior angles. They are not congruent. They are supplementary. So, option B is NOT TRUE.
❌OPS and OPN are linear pair angles. Linear pair angles are not congruent. They are supplementary. Therefore, OPTION B IS NOT TRUE.
OPS and TSU are also not congruent.
2. Angle RSP and angle RSU are vertical angles. Vertical angles are congruent. Therefore, the statement that IS TRUE is:
C) RSP is congruent to TSU
Tom is going to build a fence around his garden which is a rectangle measuring by He will first put in posts which will be 4 m apart. If the posts cost $3.40 each, what will be the total cost for all the posts?
Answer:
13.6
Step-by-step explanation:
4 × 3.40 = 13.6
I hope I have helped
calculate the mean of the following. 3,5,6,4,7,3,9,8
Step-by-step explanation:
mean = sum of observation/ no. of observation
mean = 3+5+6+4+7+3+9+8/ 8
mean = 45/8 = 5.6Answer:
3+5+6+4+7+3+9+8/8
45/8
5.625
Endpoint given the Midpoint: * The midpoint of RP is M(2, 4). If one of the end points is R(-1,7), find the coordinates of the other end point.
Answer:
The coordinates of other point are: (5,1)
Step-by-step explanation:
Given coordinates are:
M(x,y) = (2,4)
R(x_1,x_2) = (-1,7)
We have to find the coordinates of other point (x2,y2)
The formula for mid-point is given by:
[tex]M(x,y) = (\frac{x_1+x_2}{2}, \frac{y_1+y_2}{2})[/tex]
Putting the values we get
[tex](2,4) = (\frac{-1+x_2}{2}, \frac{7+y_2}{2})[/tex]
Putting respective elements equal
[tex]\frac{-1+x_2}{2} = 2\\-1+x_2 = 2*2\\-1+x_2 = 4\\x_2 = 4+1\\x_2 = 5\\And\\\frac{7+y_2}{2} = 4\\7+y_2 = 4*2\\7+y_2 = 8\\y_2 = 8-7\\y_2 = 1[/tex]
Hence,
The coordinates of other point are: (5,1)
What is the length of side a?
Line a to b is 5
line b to c is a
Answer: which side is a? I can’t answer the question without knowing the sides
Step-by-step explanation:
Ray EF is the bisector of angle AET. Find the measure of angle FEA.* 70° E A Your answer
Answer:
<FEA is 70 degrees. It is already given.
Choose the incorrect statement
The polarity or poles in Earth's magnetic
field actually switch and is recorded in the sea
floor.
The youngest rock is actually at the center
of the ocean and older the farther apart that
we become.
The polarity or poles in Earth's magnetic
field actually switch and is recorded in the
atmophere.
Hi
Answer:
btw i am pretty sure thats physics
What is 10c+9-7c.....?
Answer:
17c + 9 = 10c + 9 - 7c
COMBINE LIKE TERMS
10c + 7c = 17c
9 IS NOT A LIKE TERM, SO WE LEAVE IT ALONE
un cine tiene 2 salas la sala A tiene 1920 butacas distribuidas en 24 filas con la misma cantidad en cada una ¿cuantas butacas tiene cada fila?
Answer:
80 and B is 96
Step-by-step explanation:
1920 ÷ 24 = 80
1920 ÷ 20 = 96
puedes comprobarlo en la calculadora
lo siento si es incorrecto
eso es lo que entendí