Answers
Answer:
x+8
Step-by-step explanation:
if you're wrong its your fault
Related Questions
The first equation in the system of equations that models this situation is x + y = 70, where x represents the number of 2-point questions and y represents the number of 4-point questions. What is the other equation in the system? Enter the correct answer in the box. Substitute numerical values in the expression for A, B, and C.
Answers
Answer: (2x+4y=150) this is right
i
swear
on
my
mama
this
is
correct
my
g
Answer:
they were right
Step-by-step explanation:
The first equation represents the number of questions on the test. So, the second equation represents how much the questions are worth.
There are x of the 2-point questions, which have a total value of 2x points.
There are y of the 4-point questions, which have a total value of 4y points.
The test has an overall value of 150 points, so the second equation is 2x + 4y = 150.
Hannah is working two summer jobs, making $18 per hour lifeguarding and $9 per hour clearing tables. Last week Hannah worked twice as many hours clearing tables as she worked hours lifeguarding hours and earned a total of $144. Graphically solve a system of equations in order to determine the number of hours Hannah worked lifeguarding last week, x,x, and the number of hours Hannah worked clearing tables last week, yy.
Answers
Step-by-step explanation:
18/hour life guarding and 9/hour clearing tables. so 9 divided by 144 gives you ur hours then u just divide by 2 to get life guarding hours pls tell me if u need help
Complete the table shown to the right for the half life of a certain radioactive substance.
Decay rate:1.5% per year=-0.015
The half life is ___ years
Answers
Given:
Decay rate: 1.5% per year = -0.015
To find:
The half life.
Solution:
The continuous exponential decay function is
[tex]A(t)=Ae^{-kt}[/tex]
where, a is initial value, -k is decay rate and t is time period.
For half life, [tex]A(t)=\dfrac{A}{2}[/tex],
[tex]\dfrac{A}{2}=Ae^{-0.015t}[/tex]
Dividing both sides by A.
[tex]\dfrac{1}{2}=e^{-0.015t}[/tex]
Taking natural log on both sides.
[tex]\ln \dfrac{1}{2}=\ln e^{-0.015t}[/tex]
[tex]-0.69314718=-0.015t[/tex]
Divide both sides by -0.015.
[tex]\dfrac{-0.69314718}{-0.015}=t[/tex]
[tex]46.209812 =t[/tex]
[tex]t\approx 46[/tex]
Therefore, the half life is 46 years.
I want to make sure if this was the right answer
Answers
Answer:
no, I believe the correct answer would be D. (-4, 4)
Answer:
(-4, 4)
Step-by-step explanation:
Even though I don't see it explained anywhere, it seems that what looks like the coordinates of two points is really the coordinates of the first point and the translation.
That means that (-9, 6) is the original point.
(5, -2) is the translation which is a translation of 5 in x and a translation of -2 in y.
Start with (-9, 6)
Apply the translation to x and y (-9 + 5, 6 + (-2))
You get (-4, 4)
Answer: (-4, 4)
Can y’all please help me
Answers
cuanto es 1955×2876
Answers
Answer:The answer is 5622580
Step-by-step explanation:
Evaluate each expression. 9. ⎪31⎥ + ⎪–5⎥10. ⎪–16⎥ – ⎪4⎥ 11. ⎪–28⎥ – ⎪–1⎥12. ⎪11–2⎥ 13. ⎪44⎥ + ⎪–34⎥14. ⎪–101⎥ – ⎪–1⎥
Answers
Answer:
Step-by-step explanation:
9. 31 + 5 = 36
10. 16 - 4 = 12
11. 28 - 1 = 27
12. 9
13. 34 + 44 = 78
14. 101 - 1 = 100
WILL GIVE BRAINLISEST
Answers
Answer:
No solution
Step-by-step explanation:
Answer:
Zero
Step-by-step explanation:
HURRY UP WILL GIVE BRAINLYEST AND 20 POINTS What is the value of
O -4
O -2
O 2
O 4
Answers
Answer:
4
Step-by-step explanation:
you multiply -2 and 7 which makes a negative then you subtract from 15 and get 1 so then you divide 1 by 4 which gives you 4
Answer:
u do edg2020 just like me
4 is corrrrect answerrrrr
Find the unit prices to the nearest tenth of one cent 12 oz for $2.10
Answers
Answer:
Concept: Unit Price & Algebraic Representation
You have 12 oz You have a total price of 2.10 Hence you divide 2.10/12 Your result to the nearest tenth is 0.2 Rate positively and give brainlistIf the drawing length is 7 cm. and the real length is 28 metres , then drawing scale is what
Answers
Answer:
1cm =4 cm
Step-by-step explanation:
28/7=4
so Scale is 4
Have a nice Day , I would appreciate it if you could mark my answer brainliest
The drawing should have a scale of 400:1.
What is scale?A scale is a group of levels or numbers that are applied to a certain system of measurement or comparison.
Given, the drawing length is 7cm and the real length is 28 meters.
real length in cm = 2800. hence,
Scale of drawing = 2800: 7 = 400 : 7
Therefore, 400: 1 would be the scale of the given drawing.
Learn more about scale here:
https://brainly.com/question/28465126
#SPJ2
2×2 dvkjsdnvkjdbvjdbvj
Answers
Answer:
4
Step-by-step explanation:
its 4 lol
Answer:
4
Step-by-step explanation:
HELP ME THIS MY LAST QUESTION PLEASE!!!!!!!!!!!!!!!!!!!!!!!
Answers
Answer: c
Step-by-step explanation:
Tara bought 30 books at a yard sale. She now has 220 books. Which equation can be solved to find b, the number of books Tara had before the yard sale?
Answers
Answer:
220 = B + 30
Step-by-step explanation:
This can be rearranged many ways
B= 190
B= 220 - 30
ETC...
Kevin walked a total of 14.98 miles last week. He walked the same distance each of the 7 days. How many miles did Kevin walk each day?
Answers
Answer:
2.14?
Step-by-step explanation:
(I'm not good at explaining, but I THINK its 2.14)
26+5 i am in kinder pls help
Answers
31
you could just use a calculator yk
A group of eight people are attending the movies together.
a. Two of the eight insist on sitting side by side. In how many ways can the eight be seated together in a row?
b. Two of the people do not like each other and do not want to sit side-by-side. Now how many ways can the eight be seated together in a row?
Answers
Answer:
I think A
Step-by-step explanation:
Triangle ABC is graphed below with vertices at A (-4,5), B (-6, -4) and C (4,-4). Use the following rule to produce
triangle A'B'C' using ABC as the original image.
F(x,y) — (x+2, -y)
Show Your Work
Someone help me to solve this problem asap! Please
Answers
Step-by-step explanation:
A(-4, 5) => A'(-4+2, -5) = A'(-2, -5)
B(-6, -4) => B'(-6+2, -(-4)) = B'(-4, 4)
C(4, -4) => C'(4+2, -(-4)) = C'(6, 4)
Hence the new coordinates are A'(-2, -5), B'(-4, 4) and C'(6, 4).
explanation please?!?!
Answers
Answer:
third option
Step-by-step explanation:
[tex]first\:one:\\\\2x+10=-2x+10 \rightarrow\leftarrow\\\\second:\\\\-2(x+5)=2x-10\\\\-2x-10=2x-10\rightarrow\leftarrow\\\\third:\\\\-2x-10=-2(x+5)\\\\-2x-10=-2x-10 \\\\fourth:\\\\-2(x-5)=-2x-10\\\\-2x+10=-2x-10\rightarrow\leftarrow[/tex]
Note: this symbol [tex]\rightarrow\leftarrow[/tex] means contradiction, you can take it as doesn't work
I hope that i explained enough
To make 2 dozen brownies, Jake needs to use 8 tablespoons of butter. How many tablespoons of butter are used in one dozen?
Answers
Answer:
uh 4?
Step-by-step explanation:
8/2=4
A car was moving at 14 m/s. After 3 seconds, its speed increased to 20 m/s. What was the acceleration during this time?
Answers
Answer:
6 mph
Step-by-step explanation:
the cars acceleration was
6mph
what is the combined mass of the moon(7.3*10^22)earth(590*10^22)and pluto(1.3*10^22)
Answers
It's the sum of the three masses:
[tex]7.3\cdot10^{22} + 590\cdot10^{22} + 1.3\cdot10^{22} = (7.3 + 590 + 1.3)10^{22} = 598.6\cdot10^{22}[/tex]
A parabola has x-intercepts at (3,0) and (9,0) and a maximum at 4. Write the equation of the
parabola in vertex form.
Then, convert the equation of the parabola to standard form.
Answers
Answer:
H!
Step-by-step explanation:
Roger and Rita each drive at a constant speed between Phoenix and San Diego. Each driver’s distance for the same section of the trip is displayed below.
Who had a head start, and how many miles was the head start?
Answers
Answer:
Rita had a 28-mile head start.
Step-by-step explanation:
Answer:
the answer is A my lil' dudes
Step-by-step explanation:
PLEASE HELP ME!!!
On a road trip a family drives 350 miles per day how many days D must they travel to reach the distance of at least 1400. Solve the inequality what does the solution represent in this situation?
(Just in case you wanted to see the question I put a picture)
Answers
Answer:
[tex]350 * D \geq 1400[/tex]
[tex]D\ge 4[/tex]
This means that the family must travel for at least 4 days.
Step-by-step explanation:
Given
[tex]Rate = 350\ miles\ daily[/tex]
[tex]Distance = 1400\ miles\ (atleast)[/tex]
Required
Determine and solve the inequality
The number of days is represented with D
So:
On any D number of days, the family would have covered a distance of 350 * D miles
If the total distance is at least 1400, then the inequality is:
[tex]350 * D \geq 1400[/tex]
[The term "At least" is used to represent greater than or equal to]
[tex]350 * D \geq 1400[/tex]
Divide through by 350
[tex]\frac{350 * D}{350} \ge \frac{1400}{350}[/tex]
[tex]D \ge \frac{1400}{350}[/tex]
[tex]D\ge 4[/tex]
This means that the family must travel for at least 4 days.
Multiply 35 x 2/15 plsssssssssssssss
Answers
Answer:
75/25
Step-by-step explanation:
if i run a 5.31 second in 40 meter what would i run in a 40 yard dash
Answers
Answer:
im not sure , sorry... i wish i could have helped
Show that a vector
[tex]u = x _{1}i + y_{1}j + z_{1}k[/tex]
with direction cosines (cos α, cos β, cos gamma) can be written as
[tex]u = |u| ( \cos \alpha i + \cos\beta j + \cos \gamma k)[/tex]
Answers
Answer:
u = |u|(cos∝+cosβ+cosγ)
Step-by-step explanation:
Explanation
Proof:-
Given a vector u = x₁ i + y₁j +z₁k
let O X, OY, O Z be the positive co-ordinate axes
P(x₁,y₁,z₁) be any point in the space
Let OP makes angles α,β,γ with co-ordinate axes OX , OY ,OZ .
The angle α,β,γ are known as direction angles and cosine of the angle
l =cosα , m= cosβ , n=cosγ
The perpendicular PA,PB,PC are drawn co-ordinate axes OX,OY,OZ respecctively
InΔOAP , ∠A =90° , cos∝ =[tex]\frac{x}{r}[/tex]
x₁ = rcos∝
InΔOBP , ∠B =90° , cosβ =[tex]\frac{y}{r}[/tex]
y₁ = rcosβ
InΔOCP , ∠C =90° , cosγ =[tex]\frac{z}{r}[/tex]
z₁ = rcosγ
Given u = x₁ i + y₁j +z₁k
|u| = [tex]\sqrt{(x_{1})^{2} +(x_{2} )^{2} +(x_{3} )^{2} }[/tex]
Therefore u = x₁ i + y₁j +z₁k
u = |u|(cos∝+cosβ+cosγ)
Find the 15th term of the geometric sequence 1, -4, 16, ...1,−4,16,
Answers
Answer:
Doesn't look like a geometric sequence.
Step-by-step explanation:
If 1, -4, 16 keeps repeating then the answer is 16.
Describe some possible combinations (at least 2) of 4-seat tables and 6-seat tables that will seat 160 customers. Explain how you found them. Write an equation to represent the situation. What do the variables represent?
Answers
Answer:
You could do 50 2 seat tables and 5 4 seat tables
You could do you could do 40 2 seat tables and 10 4 seat tables
Step-by-step explanation:
brainliest plz