Answers
Answer:
70
Step-by-step explanation:
Related Questions
I'm solving systems and I don't understand how to do it pls helpp
Answers
Answer:
Use the process of elimination. I'll only do one example since you have 4.
Step-by-step explanation:
Let's do the first question.
2x-3y=-11
2x+y=9
Our goal here is to be left with one variable to solve, this way we can use the answer for that variable to find the other. A.K.A only find X to plug into the equation to find Y. To do this, we'll use the process of elimination, in which we need to cancel out a variable.
X seems the easiest here. To cancel 2 (in the top equation), you need to have a -2. And that -2 needs to be the x coefficient in the 2nd equation, in order for us to "cancel" it out. To get -2, you multiply 2 by -1.
-1(2x+y)= -1(9)
Note that whatever you do to one side, you need to do it to both sides! Hence, why I also multiplied 9 by -1. You should now be left with:
-2x -y = -9
Now, we cancel out the positive 2 and -2 from both equations by adding the two equations.
2x-3y= 11
+
-2x-y=-9
X cancels out, so we're left with -4y=-20. Solve for Y, which is 5.
-4y=-20
y=5
Now that you have the Y value, plug it into any of the two equations to find your X value.
2x-3y=11
2x-3(5)=11
2x-15=11
2x=26
x=13
And voilah! Our Y value is 5, and our X value is 13.
It's pretty simple once you understand what's going on. All that we did was to cancel out one variable (either X or Y) in the two equations so that we're left with only one variable to solve. If we cancel out X, we only need to solve for Y. You do this by manipulating one of the two equations (doesn't matter which one). Once you find either X or Y, all you need to is to plug it into one of the original equations. Then, you'll have both X and Y.
And that my friend, is the process of elimination. Good luck!
I need help plz real onez plz
Answers
To find the mean you add up all the numbers and divide by how many sets of numbers there were.
8+10+11+8+13=50
50/5=10.
3. Write the following as an algebraic expression: Twice the cube of z .4. Write the following as an algebraic expression: The quotient of the sum of x plus 4 and 2
Answers
Answer:
1. 2z^3 2. x+6
Step-by-step explanation:
Cab rides from Brooklyn to Manhattan are usually around $20. Today it cost me $24. Cab rides from Brooklyn to Boston are usually around $140. Today it cost me $144. Which statement is true about the relative error of each cab ride?
A. The relative error of the cab ride to Manhattan is greater than that of the cab ride to Boston.
B. The relative error of the cab ride to Boston is greater than that of the cab ride to Manhattan.
C. The relative error is the same for both cab rides.
D. There is not enough information to solve this question.
Answers
Answer:
the answer is c i guess
07.01)
Which of the following sets shows all the numbers from the set {3, 4, 5, 6} that are part of the solution to the equation 5x + 4 < 29? (4 points)
a. {4, 5, 6}
b. {3, 4, 5}
c. {3, 4}
d. {3}
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40 points!! please do not plagiarize, I need this to be original :D
Erik is performing a marble experiment in math class. His teacher places an equal number of black, red, and white marbles in a bag. Then, Erik randomly takes out a marble, records the result, and puts the marble back in the bag. Each of the first four times Erik takes out a marble, he gets a black marble.
A. What is the theoretical probability of Erik picking a black marble next time? Based on Erik's results, what is the experimental probability of Erik picking a black marble next time?
B. Explain the difference between the two probabilities you found in part A.
C. What is the theoretical probability and likelihood of getting four black marbles in a row?
Answers
Answer:
Every one of us would have encountered multiple situations in life where we had to take a chance or risk. Depending on the situation, it can be predicted up to a certain extent if a particular event is going to take place or not. This chance of occurrence of a particular event is what we study in probability. In our everyday life, we are more accustomed to the word ‘chance’ as compared to the word ‘probability’. Since Mathematics is all about quantifying things, the theory of probability basically quantifies these chances of occurrence or non-occurrence of certain events. In this article, we are going to discuss what is probability and its two different types of approaches with examples.
Can sum1 help me with this pls
Answers
<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3
Answer:
I can try!!!
Send me the question
<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3
please help!! i’m having trouble on this question . please be serious , no links or points will be taken away. thank you!! giving BRAINLEST IF EXPLAINED!!
Answers
Answer:
16.6
Step-by-step explanation:
there is 1260 voters and out of that only 210 voted for the sheriff, 210 is 1/6 of 1260 so you would take 100 and divide that by 6 and you would get 16.6
Children get a 15% discount on tickets to an amusement park. Jun had a coupon for 5% off any two tickets. He used the coupon for himself and his 4-year-old son, Jack. If regular admission for a ticket was $60, what did Jun pay for the two tickets?
Answers
The amount that Jun paid for the two tickets given the discount rate and the coupon rates is $105.45.
How much was paid for the two tickets?Discounts and coupons reduce the price of an item.
Cost of the child's ticket after the discount = (100 - 15%) x 60 = $51
Cost of both tickets after the coupon = (100 - 5) x (51 + 60) = $105.45
To learn more about how to calculate discounts, please check: https://brainly.com/question/26061308
#SPJ2
Measurements of atoms, such as amounts, distances, and weights, are often very large or very small when compared to measurements of things you can see or touch. Scientific notation represents numbers as a power of 10. This makes very large or small numbers easier to use and understand. Approximately 7,500,000,000,000 carbon atoms fit across the period that you make with your pencil. Express this number in scientific notation. (PLEASE ANSWER FAST I'LL GIVE BRAINLIEST ALSO PLEASE DO ALL THIS IS WORTH 30 POINTS)
Step 1 Rewrite the number with a decimal after the first nonzero digit.7.500000000000
Step 2 Find the number of places and the direction you moved the decimal. If a number does not show a decimal, the decimal is at the right end of the number.You moved the decimal 12 places to the left.
Step 3 Drop the zeros, and write the number of places you moved the decimal as a power of 10. If you moved the decimal to the right, the power is negative. If you moved the decimal to the left, the power is positive.7.5 × 10 12
Step 4 Reverse the process to change scientific notation back to a whole number. A positive power of 10 moves the decimal to the right. A negative power of 10 moves the decimal to the left.
(Answer 1, 2, 3, 4 and 5 )
1. A sample of gold contains 3,800,000,000,000,000,000 atoms. Express this number in scientific notation.
2. A sample of silver contains 400,000,000,000,000 atoms. Express this number in scientific notation.
3. A sample of carbon has a mass of 0.000000000000000000034 kg. Express this mass in scientific notation.
4. A sample of silicon contains 5.23 × 10^11 atoms. Write this amount as a whole number.
5. The mass of a proton is about 1.67 × 10 -27kg. Write this mass as a whole number
Answers
Answer:
Step-by-step explanation:
1)3.8 *10¹⁵
2)4.0*10¹⁴
3)30.4*10⁻²⁰
4)523,000,000,000 atoms
5)0.000 000 000 000 000 000 000 000 00167
heyyy, please answer :]
Answers
Because the slope is the same, so they are parallel.
Hope that help!! :-)
Answer:
it is no solution
Step-by-step explanation:
Pls help need help ASAP 50 points you will be reported if the answer is wrong
Answers
Answer:
A. 48 ft²
Step-by-step explanation:
4 ft x 4 ft x 3 ft = 48 ft²
The total area will be the sum of the area of the four sides of the shed. In other words it is the curved surface area.
Answer:
112 ft2
Step-by-step explanation:
the base of the figure is a 4x4 square which = 16 ft2
the sides are 4, 4x3 rectangles that = 48 ft2 total
and the 4 triangles' bases are 4, while the height being 6 which = 48 ft2 total
everything added up = 112 ft2
Help PLZ Answer Questions Below
Answers
Answer:
First question: 2/3
Second question: -2
Step-by-step explanation:
2x - 3y = 6
Subtract 2x from both sides
-3y = -2x + 6
Multiply by -1
3y = 2x - 6
divide by 3
y = 2/3x -2
The equation basically asks for slope, so 2/3
x + 1/2y = 5
Subtract x
1/2y = -x + 5
multiply by 2
y = -2x + 10
it is -2
Students were surveyed about the time they wake up on school mornings. The results are shown in the table.
Survey Results
Time Range Number of Students
Before 6:00 3
6:00-6:30 13
After 6:30 4
Out of 500 students in the school, what is the BEST prediction for the number of students who wake up after 6:30?
Answers
plzzzzz help me!!!!!
Answers
Answer: 17.50 give brainliest if it helps
Step-by-step explanation:
Answer:
17.50
Step-by-step explanation:
420-140=280
280/16=17.50
give brainliest please
sisters homework i dont want to do it lol 2 questions
First slide question 1
second slide question 2
Answers
Answer:
its a bit hard sorry i cant answer
Step-by-step explanation:
The table and scatter plot show the total weight for
quart containers of strawberries at Marty's Market.
PLS ANSWER FAST
Answers
pls rate brainliest
the question says “is the relation above a function?”
Answers
Answer:
No, because two of the points are on 4 on the x-axis.
Step-by-step explanation:
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Sandra waits tables at Polly's Tamales. While she is working, she receives a discount on any food she buys. If an item normally costs d dollars, Sandra can buy it for 2/3
d dollars. Last night at work, Sandra bought a taco salad that normally costs $9.
What price did Sandra pay for the taco salad?
Answers
Answer: 6
Step-by-step explanation: 2/3 of 9 = 6
do any of y'all know how to do this I'm so confused and I need help plz
Answers
To get your answer you need to add all the numbers on your chart and then subtract that answer to his net worth of 101,800.
I would give you the exact answer but the chart is super blurry maybe if you repost this or something i could give you the complete answer.
hope this helps<3
brainliest please!!<3
7th grade math does anyone got any idea of what this could be
Answers
Answer:
-1 + 4x
Step-by-step explanation:
They had completely forgot about the 2x's
they pretty much just got rid of them
The correct answer would be -1 + 4x
PLEASE HELP ME WITH THE QUESTION IN THE PICTURE BELOW
Answers
Jennifer's family loves to drink iced tea mixed with lemonade in the summer. Yesterday, Jennifer mixed 4 ounces of lemonade and 8 ounces of iced tea in a tall glass for herself. Then, she made another pitcher to share with 8 ounces of lemonade and 24 ounces of iced tea. Did the glass and the pitcher have the same ratio of lemonade to iced tea?
PPPPPPPPPPLLLLLLLLLLlEEEEEEAAAAAASSSSSSEEEEEE HHELP
Answers
A special filter can process 34 gallon of liquid in 25 minutes. If the filter processes a liquid at a constant rate, what is the rate in gallons per hour that the filter processes the liquid?
Give your answer in fractional form.
Answers
Answer:
1.36
Step-by-step explanation:
34/25=1.36 wait nvm I messed up
The number y of Northern Rocky Mountain wolf breeding pairs x years since 1995 can
be modeled by y = 0.34x^2+ 3.0x + 9 When were there about 30 breeding pairs?
***no links or i’ll report***
Answers
Answer:
Step-by-step explanation:
Find the area of the trapezoid below.
Answers
HELP WILLL GIVE BRAINBLEST
Answers
Step-by-step explanation:
this soo easy bru multiply every side
Answer:
Step-by-step explanation:
4th question
for pyramid
surface area of pyramid=base length*base width*pyramid height
surface area=4*4*5
surface area= 62.23 inch
2nd question
surface area of prism
length*width*height
6*3*5
128 m^2
Ballio's family traveled 2/7 of the distance to his uncle’s house on Saturday. They traveled 2/5 of the remaining distance on Sunday. What fraction of the total distance to his uncle’s house was traveled on Sunday?
Answers
Answer:
4/35
Step-by-step explanation:
10/35-14/35=-4/35
question ^^^^^^^^^^^^^^^^6
Answers
Answer:
no
Step-by-step explanation:
x+14=x14
Answer:
(x+14)=14
(x+14)-14=0
-14x-196=0
-14x=196
x= -14
PLS PSLS PLSS ASWER MEEEEE ASNNWER THIS QUESTION THEN READ THE STORY2. If the lions ever outnumber the wildebeest on either side of the river (including the animals in the boat if it's on that side), they'll eat the wildebeest.
THE STORY There are three lions and three wildebeests stuck on the river bank which is on fire. It is your job to save the animals. How do three lions and three wildebeests cross over to the safe river bank on the other side of a crocodile-infested river to escape the flames? There’s a raft! But there are a few rules that must be followed in order to solve the puzzle: