Answer:
y = 28
Step-by-step explanation:
0.5y + y/ 3 = 0.25y + 7
1.5y / 3 = 0.25y + 7
y/2 = 0.25y + 7
y = ( 0.25y + 7)*2
y = 0.5y + 14
y - 0.5y = 14
0.5y = 14
y = 14/0.5
y = 28
If the sum of 3 and y is the sum of 2 and 2
Answer:y=1
Step-by-step explanation:
Answer:
y=4/3
Step-by-step explanation:
3+y=2+2
3y=4
y=4 divided by 3
y=4/3
Rosea drives her car 30 kilometers to the train
station, where she boards a train to complete her trip. The
total trip is 120 kilometers. The average speed of the train is
20 kilometers per hour faster than that of the car. At what speed
must she drive her car if the total time for the trip is less than
2.5 hours?
Answer:
>34.88km/h
Step-by-step explanation:
Because we have two unknown values in this question (speed of train and speed of car), we will need two equations to solve it.
Firstly, we can make a big equation for time in terms of the vehicle speeds. Time = distance / speed, so if we use t for the train speed and c for the car speed, we get this equation for speed:
30/c + 90/t = 2.5
Here the 30 is the distance traveled by the car in km and the 90 is the distance traveled by the train in km (120 - 30 = 90).
We also know that the train speed was 20km/h faster than the car speed so our second equation is:
c + 20 = t
So now we can substitute this in the big equation so we only have one variable to solve for:
30/c + 90/(c+20) = 2.5
Now to solve this, this first step is to get rid of the fractions, which we can do by multiplying all the terms by the lowest common factor of the two denominators which is c(c+20):
(30/c)*c(c+20) + (90/c+20)*c(c+20) = 2.5
This simplifies to:
120c+600=2.5c^2+50c
and then into the quadratic equation:
2.5c^2-70c-600=0
This can be solved with the quadratic formula or a solver/calculator, and yields the solutions:
c=−6.88, 34.88 (both to 2dp)
We can eliminate the negative solution because speed cannot be negative meaning that Rosea must drive her car at the speed of at least/greater than 34.88km/h if she wants the total trip to be less than 2.5 hours.
Hope this helped!
16) Amari ran three-quarter the distance Mary did. Amari ran 12 miles. Write and solve an equation that represents how far Mary
Answer:
Step-by-step explanation:
Amari ran 3/4 distance Mary ran
A = 3/4 M
Amari ran 12 miles
12 = 3/4 M Multiply by 4
12 * 4 = 3*M Combine
48 = 3M Divide by 3
48/3 = M
M = 16
So Mary ran 16 miles.
true or false, the mean, median, and mode of 1, 2, 3, 4, 5 are all the same answer.
Answer:
No
Step-by-step explanation:
No. The mean and median would both be three, but since all the numbers are different, there IS NO mode.
I’m in need of help
Answer:
Step-by-step explanation:
9. (-2, 2) (4, 3)
(3 - 2)/(4 + 2) = 1/6
10. (-2, 2) (3, 4)
(4 - 2)/(3 + 2) = 2/5
11. (3 - 13)/(0 + 16)= -10/16= -5/8
12. (-19 - 0)/(7 + 12) = -19/19= -1
Of Q is the midpoint od RP, Find the coordinates of R if P(9,-2) and Q (4,5)
Answer:
(-1,12)
Step-by-step explanation:
let R be(x,y)
Q(4,5)=midpoint
R(x,y)=(x1,y1)
p(9,-2)=(x2,y2)
now,
(4,5)= x1+x2/2 , y1+y2/2
(4,5)= x+9/2 , y-2/2
so,
x+9/2=4 y-2/2=5
x+9=8 y-2=10
x= -1 y=12
therefore, R(x,y)= (-1,12)
Can someone please help, last question. Thanks
Answer:
A) a= 123 b= 123 c= 57
B) d= 98 e= 98 f= 98
C) g= 75 h= 75
Step-by-step explanation:
The ones that have the same angle measurement are corresponding angles, meaning that they have -well- the same measurement.
Adjacent angles are how I figured out the measurements. If you have one angle, the angle next to it will form a straight line, or 180 degrees. You just subtract that measurement to 180 and get the other angle.
Answer:
G= 75 H=75
Step-by-step explanation:
Ok, so with these the lines are marked as parallel. All lines are equal to 180 degrees, so with the given information that one of the angles are 75 degrees, you can subtract 75 from 180 to get 105. Since both g and h did not require that, it was not entirely necessary for me to say that, but I hope that it can be helpful for you. But, because the lines are parallel, it means that the other side also has a 75 degree angle as well as a 105 degree angle. Just looking at the size of the angle that's labeled can help too. the smaller angle is 75. Since the lines are parallel, you can just find the smaller angles and mark them as 75 as well. Hope that was helpful to you!
how do i solve the equation [tex](2a^{3} b^{4}c^{0})^{3}[/tex]
Answer:
[tex]8\frac{-2x}{-2}=\frac{0}{-2}[/tex]
Step-by-step explanation:
[tex]\left(2a^3b^4c^0\right)^3[/tex]
Cube each portion:
[tex]2^3\left(a^3\right)^3\left(b^4\right)^3\left(c^0\right)^3[/tex]
[tex]8\left(a^3\right)^3\left(b^4\right)^3\left(c^0\right)^3[/tex]
[tex]8a^9\left(b^4\right)^3\left(c^0\right)^3[/tex]
[tex]8a^9b^{12}\left(c^0\right)^3[/tex]
[tex]8a^9b^{12}\times1[/tex]
[tex]8a^9b^{12}[/tex]
You use 4 gallons of water on 14 plants in your garden. At this rate, how much water will it take to water 35 plants?
Answer:
10 gallons
Step-by-step explanation:
Step 1:
4 : 14 = x : 35
Step 2:
14x = 140
Answer:
x = 10
Hope This Helps :)
Answer:
ten
Step-by-step explanation:
thats what i got
Can someone answer these for me ?
What is the prime factorization of 96? 8 · 12 2 · 2 · 2 · 2 · 3 25 · 3 25 · 32
Answer:
2^5 *3
Step-by-step explanation:
You can solve this multiple ways but should get 2^5*3
Answer:
[tex]2^5*3[/tex]
Step-by-step explanation:
[tex]96\\\\=2*48\\\\=2*2*24\\\\=2*2*2*12\\\\=2*2*2*2*6\\\\=2*2*2*2*2*3\\\\=2^{5}*3[/tex]
X + 9 = 7
How do you move the constant to the right side and change it’s sign
Step-by-step explanation:
X + 9= 7
get x by itself you -9 on both sides
X + 9 = 7
- 9. -9
X = -2
What is the constant term in the polynomial expression, and what does it represent?
please answer the questions!!!please!!!!!
Answer:
I think #5 is c.
Step-by-step explanation:
because it says 50% without decimal and it's doesn't equal to 1/2%
Answer:
Q6 b. 70
Step-by-step explanation:
Change 20% to decimal so it will be 20/100=0.2
350/0.2=70
Jenna bought 5 reams of paper at the store for a total of $21. The tax on her purchase was $1. Solve 5x + 1 = 21 to determine the price for each ream of paper.
Answer:
$4
Step-by-step explanation:
From the question we have it that jenna bought the 5 reams of paper at a price of 21
The tax on this was $1
The total cost of the paper minus tax = $20
Cost of 1 team = total cost of paper / quantity
= 20/5
From the equation
5x +1 = 21
5x = 21 -1
5x = 20
X = 20/5
X = $4
Therefore we have The cost of a team of paper to be equal to $4
A plane flies x mph. How far can it go in y hours? Which expression represents this?
x/y miles
x + y miles
xy miles
Answer:
xy miles
Step-by-step explanation:
Answer:
xy miles
Step-by-step explanation:
cus i said so
what is 9b = 8b − 16
Answer:
b = -16
Step-by-step explanation:
9b = 8b - 16
9b - 8b = -16
b = -16
arange the following expressions in order of their value from least to greatest. a. 4 − 6 b. −4 + 6 c.−4 − 6
Answer: C. -10, A -6, B 2
Step-by-step explanation:
if f(x)= x^2+x and h(x)=5x-2 find f(f(2))
Step-by-step explanation:
Remove the parentheses: = ff x 2
Apply exponent rule: f^1+^1x2
Add the numbers 1+1=2 = 2f^2
I hope this is right.
is -7 greater than -4
Answer:
no
Step-by-step explanation:
-7 is smaller than -4 because the farther down the negative part of the number line, the "smaller" it gets
Amy and her sister are making lemonade for the school dance. Their recipe makes 2 quarts of lemonade. If they make 35 times the recipe how many gallon
Answer:
Amy and her sister will have 17.5 gallons of lemonade for the school dance.
Step-by-step explanation:
The sister's recipe makes 2 quarts of lemonade. As they want to make 35 times more, so total number of quarts made will be =
quarts
Now, 4 quarts has 1 gallon.
So, total number of gallons in 70 quarts will be =
tex]\frac{70}{4} =17.5[/tex] gallons.
Hence, the answer is 17.5 gallons.
NEEDING SMART PPL PLEASE I NEED HELP will give brainly Given the following expressions:
A. 5^3· 5^-4 B. 3^5/3^-6
C. (1/4)^3 · (1/4)^2
D. (-7)^5/(-7)^7
Part 1: Use operations of exponents to simplify each expression (A-D). Include your work in your final answer.
Part 2: For each simplified expression (A-D), tell whether or not the expression has a value between 0 and 1. please write in your own words
Answer:
Part 1:
a. 5^3 x 5^-4 = 125 x 1/(5)^4 = 125 x 1/625 = 125/625 = 0.2b. 3^5/3^-6 = 3^5 x 3^6 = 243 x 729 = 177147c. (1/4)^3 x (1/4)^2 = 1/64 x 1/16 = 1/1024 = 0.00097656d. (-7)^5/(-7)^7 = -16807/-823543 = 1/49 = 0.02040816...Part 2:
a. has a value between 0 and 1 because the answer to the expression is 0.2b. does not have a value between 0 and 1 because the answer to the expression is 177147c. has a value between 0 and 1 because the answer to the expression is 0.00097656d. has a value between 0 and 1 because the answer to the expression is 0.02040816...-6(9-9v) what is the answer
13) Print-o-rama charges a $25 setup fee and $8 per shirt. Printastic charges a $64 set
up fee and $5 per shirt. For what number of shirts do the companies charge the same
amount? What would the charge be?
Answer:
At 8 shirts, Print-o-rama charges $89. At 5 shirts, Printastic charges $89.
To solve the equation −x − 3 = x2 − 2x− 15, you could graph of the following system. y = −x − 3 y = x2 − 2x − 15 Use the graph of this system to identify all solutions of −x − 3 = x2 − 2x − 15. A. -7 B. -3 C. 0 D. 4
Answer:
I think option (D) 4 is correct
Answer:
Step-by-step explanation:
E D G E
Which sequence of transformations confirms congruence by mapping shape I onto shape II? A. a reflection across the x-axis and then a translation 15 units left B. a 90° clockwise rotation about the origin and then a translation 25 units up C. a 90° counterclockwise rotation about the origin and then a translation 10 units left D. a 180° rotation about the origin and then a translation 10 units right
Answer:
The Answer is D.
Step-by-step explanation:
Answer: Its C
Step-by-step explanation:
6x + 2y = 12
How do I show my work ?
Hey there!
ANSWER: [tex]\frac{-1}{3}y+2[/tex]EXPLANATION:[tex]6x+2y=12[/tex]
Let's start by adding -2y to both sides.
[tex]6x+2y+-2y=12+-2y\\\text {This equals: 6x=-2y+12}[/tex]
Our second and final step is to divide both sides by 6.
[tex]\frac{6x}{6}=\frac{-2y+12}{6} \\x=\frac{-1}{3}y+2(ANSWER)[/tex]
If you are looking to solve y, the answer is 6 - 3x.
If you are looking for x, the answer is x = 2 - y/3
Hope this helps and have a great weekend!
[tex]\text{-TestedHyperr}[/tex]
Can someone help me
Answer:
I think it is the first one ( 2,0)
but if I am wrong I am sorry
Hello there!
The answer is number one or circle one. Because B is right on top of it. Meaning that it's just one whole number and in this case would be 2.
I hope this helps
Simplify the expression by combining like terms 3x^2-2x+4x-x^2+3-x
Answer:
2x² +x + 3
Step-by-step explanation:
3x²-2x+4x-x²+3-x
Like terms:
3x² - x² = 2x²
-2x + 4x -x =x
3
2x² + x + 3
What operation is included as part of a fraction? Multiplication Division Addition Subtraction Explain your thinking.