x=-2y+1. and 3x+8y=11
Answer:
x=-7
y=4
Step-by-step explanation:
I am assuming you want the values of x and y. We know that x=-2y+1 and 3x+8y=11. We can substitute the value of x (-2y+1) into the equation 3x+8y=11.
Therefore 3(-2y+1)+8y=11
Using the distributive property:
-6y+3+8y=11
2y+3=11
y=4
To solve for x, we will plug in 4 in -2y+1. So, x= -2(4)+1=-7.
Check: 3(-7)+8(4)=-21+32=11.
Assume that the weight of chocolates in boxes of 'celebrations' chocolates in the UK are approximately normally distributed with N(μ=5.8,σ=1.3). Also assume that only those chocolates that weigh between 5 grams and 7 grams can be included for sale in the boxes. State the probability that a randomly chosen chocolate can be included for sale in the celebrations boxes.
Using the normal distribution principle ; the probability that a randomly chosen chocolate is in the celebration box is 0.553
μ=5.8 ; σ=1.3Zscore = (X - μ) ÷ σ
For X = 5 :
Zscore = (5 - 5.8) ÷ 1.3 = - 0.615
For X = 7 :
Zscore = (7 - 5.8) ÷ 1.3 = 0.923
Using a normal distribution table :
P(Z < 0.923) = 0.822
P(Z < - 0.615) = 0.269
P(Z < 0.923) - P(Z < - 0.615) = 0.822 - 0.269 = 0.553
Therefore, the probability of inclusion is 0.553.
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f(t)= x2 + 2; Find f(-6)
Answer:
-12
Step-by-step explanation:
F(T)=2(1×+1)
2(1×+1)= x2 + 2, and since we were trying to find what f is, we know know f=2 because of the equation 2(1×+1), so, 2(-6)= -12
Kristy downloads two songs to her MP3
player. The songs are 3 minutes and 4- minutes
long. About how many minutes of memory will these
two songs use altogether?
Answer:
About 7 minutes
Step-by-step explanation:
3 minutes + 4 minutes= 7 minutes memory used for two songs
Which situation can be represented by the equation -20 x 4 = -80?
Answer:
Stacy has no money in her bank account. She buys 4 vases which each cost $20. At the end of the transaction, Stacy's balance is -80 dollars.
How long will mischievous be after 4 weeks?
Answer:
Step-by-step explanation:
So if mischievous grows 8 7/12 inches every week, you have to multiply 8 7/12 times 4 (for the 4 weeks).
8 7/12 x 4= 34 4/12
Then add that to the snakes current length.
34 4/12+ 17 2/9=///
1) Change the fractions to have common denominators
4/12 x 3= 12/36
2/9 x 4= 8/36
2) Add. 8+12= 20. Denominators stay the same. 20/36.
3) Add the whole numbers. 34+17=51.
4) Put it all together. 51 20/36.
5) Simplify the fractions. 20 and 36 can be divided by 4.
20/4=5 36/4=9, 5/9
So, 34 4/12+17 2/9= 51 5/9
Mischievous will be 51 5/9 inches after 4 weeks.
To convert into feet, divided 51 by 12.
what is 9/10 minus 3/14?
Which greatest integer function matches the graph?
A) f(x)= -[x]+1
B) f(x)= [x] +1
C) f(x)= [x]
D) f(x)= [x]-1
Answer:
f ( x ) = [ x ] + 1
Step-by-step explanation:
Simplify and solve the equation
Answer:
y=6
Step-by-step explanation:
y+6 3
----- = ----
8 2
2(y+6)=8(3)
2y+12=24
2y=24-12
2y = 12
---- ----
2 2
therefore y=6
Answer:
it will be 6 im 100%
Step-by-step explanation:
y=6
Aloha! Looking for some help with an Algebra 1 equation. See photo below. Thank you in advance.
522 to base two
(i'm struggling so bad with math :,))
Answer: 1000001010 base 2
=======================================================
Explanation:
There are two methods to solving this problem.
One method is to involve having a list of the powers of 2
2^0 = 12^1 = 22^2 = 42^3 = 8And so on.
In that list should be 2^9 = 512. So 512 is a power of 2. It is the largest such power that is just under 522. Subtracting it off gets us
522-512 = 10
So that explains why the 2^9 slot in the answer is a '1'. This is the first '1' mentioned in the answer shown above. Then we have a string of '0's until we reach 1010 at the end. That long string of 0s indicate that we don't have any of the following powers: 2^8, 2^7, 2^6, 2^5, 2^4
It's when we get to 2^3 is when we finally have a power of 2 to add on.
Then note how 10-2^3 = 10-8 = 2
So the last term we need to add on is 2^1 = 2. Note the gap from 2^3 to 2^1 because of the first 0 in 1010
So that's how we end up with 1000001010 as our final answer.
I NEED HELP UNDERSTANDING BOTH OF THESE QUESTIONS
Answer:
For the first image: -0.4/9
Second Image = 1.53/0.45
Step-by-step explanation:
a + b = 1.6 - 2 = -0.4 (The symbols just make it stay negative)
2 - c = 2 - (-7) = 2 + 7 = 9
--------
2a - 1/3 = 2(-3/5) - 1/3 = -1.2 -1/3 = -1.5333
b/15 = -6.75/15 = -0.45
(The two negatives make it positive)
Hope this helps
He spent $25 on a box of candy bars and sold them for $2 each. If his profit (after earning back the $25) was $69, how many candy bars did Leo sell?
Which equation can be used to solve the problem?
Answer:
34.50
Step-by-step explanation:
69/2=34.50
it cost $3.99 for 15 fl. oz of detergent or $6.99 for 90 fl. Oz which is better to buy
Answer:
6.99. You get much more for a cheaper price per unit.
What is the area
of the triangle?
Answer:
.............hope it helps.......
Answer:
18 units²
Step-by-step explanation:
there are two ways to calculate the required area.
way 1.
the length of the side AB=7+2=9; the length of CD is 6-2=4 (note, CD⊥AC), then the required area is:
A=9*4/2=18.
way 2.
the coordinates of the vector AB=(0;-9), of vector AC=(4;-3).
The required area can be calculated using the formula: A=0.5*[ABxAC].
[tex]|A|=|\frac{1}{2}*\left[\begin{array}{ccc}0&-9\\4&-3\\\end{array}\right]|=|(-36):2|=18.[/tex]
Suppose the probability of being picked first in your class is 0.05. What are the the odds of being picked first? Express your answer in the form a:b
Suppose the probability of being picked first in your class is 0.05. The odds of being picked first expressed in form of a: b is 1 : 19.
A probability is a number that represents the possibility or chance that a specific event will occur.
[tex]{\mathbf{\text{The probability of an event} = \dfrac{\text{number of desired outcome}}{\text{total number of possible outcome}}}[/tex]
From the given information;
Let assume the total number of people in the class is whole = 1∴
The odds of being picked first can be computed as:
[tex]\mathbf{=\dfrac{0.05}{1-0.05}}[/tex]
[tex]\mathbf{=\dfrac{0.05}{0.95}}[/tex]
[tex]\mathbf{\dfrac{1}{19}}[/tex]
= 1 : 19
Therefore, the odds of being picked first in terms of a: b is 1 : 19
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Solve the attached question .
No Spam!
Step by step explanation needed!
Your answer is attached.
Hence, COT A (Option A) is the right answer.Hope it helps uh!
9) One baseball team played 34 games throughout their entire season. If this baseball team won 22 of those games, then what percentage of their games did they win? Round your answer to the nearest tenth if necessary.
10) At a local department store, slacks have been reduced to $27. This price is at 69.2% of the original price for slacks. Given this, what was the original price of the slacks? Round your answer to the nearest whole number if necessary.
Answer:
9): 64.7
10): 39$
Step-by-step explanation:
Answer:
64.7% and $39
Step-by-step explanation:
Question 9:
This means that the baseball team won 22/34 of their games through their entire season. In order to find the percentages of game they won, you divide 22 by 34, which comes out to 0.64705..., which becomes 64.705%. Rounding this to the nearest tenth, this percentage becomes 64.7%. Therefore, the percentage of games their baseball team is 64.7%.
Question 10:
We can represent this problem as the proportion:
[tex]\frac{27}{69.2} =\frac{x}{100}[/tex]
with x being the original price of the slacks.
We cross multiply to solve this equation. 27 times 100 is 2700. Next, we divide 2700 by 69.2, which comes out to 39.017341. Rounding this to the nearest whole number, this value comes out to 39. Therefore, the original price of these slacks is $39.
i need help i dont quite understand this and would be happy if someone helped
Answer: 2, 3, 6, 7
Step-by-step explanation:
Supplementary is two angles adding up to 180. The angles above with angle 5 add up to 180.
20,407.1859
which number is in the tenths place?
Answer:
1
Step-by-step explanation:
The tenths place is the first place to the right of the decimal.
Ex:
1.39
3 is in the tenths place
Your ex:
20,407.1859
1 is in the tenths place
Answer:
First is.
Step-by-step explanation:
20 is in the tenths place,, this is like 3rd grade math
If f(x)=(x+6)(x−3)/(x−2), then calculate f(5). Round answers to two decimal places.
What is the answer?
Step-by-step explanation:
f(5)=(5+6)(5-3)/(5-2)
=11(2)/3
=22/3
=7.33
Find the least common multiple of 12, 18, and 20.
A. 2×2×3×5
B. 2×2×3×3×5
C. 2×3×5
Answer:
180
Step-by-step explanation:
Answer:
B is the answers for the question
Step-by-step explanation:
please mark me as brainlest
Jonathan plays on a basketball team. In two games he scored 2/5 of the total number of points his team scored. His team scored 55 points in the first game and 35 points in the second game. What was the number of points Jonathan scored in these two games?
A 18
B 20
C 36
D 90
Answer:
36 points. Option C
Step-by-step explanation:
Jonathan scored 2/5th of the points of which his team had scored.
His team in the 1st game scored 55 points and 35 in the second.
The team combinedly scored 55+35=90 points.
Jonathan scored 2/5th of the 90 points
[tex]\frac{2}{5}[/tex] * 90= [tex]\frac{180}{5}[/tex]
= 36 points.
2(-1)+y=3
What is the answer
Answer: Y= 5
Step-by-step explanation:
2(-1)+y=3
2 x -1=-2
-2+y=3
+2 +2
y=5
Answer:
y = 5
multiply:
2 (-1) + y = 3 → -2 + y = 3
rearrange:
y - 2 = 3
add to both sides:
y - 2 + 2 = 3 + 2
simplify:
y = 5
I hope this helps! Sorry if it's the wrong answer! (′д｀σ)σ
I need to find the missing fraction
27/18 / ? = 7/8
Answer:
12/7
Step-by-step explanation:
27/18/12/7= 7/8
Hope it helps!!
What is the slope of the line shown below? A. –4 B. – C. D. 4 SUBMIT hurry i need help
Answer:
The answer would be 1/4
Step-by-step explanation:
Answer:
its 4
Step-by-step explanation:
An isosceles triangle with equal sides 8 cm each and third side 6 cm.
Answer:
An isosceles triangle with equal sides 8 cm each and third side 6 cm. The perimeter of triangle is 12 cm.
Evaluate.
- [4.1–3(2.2)]
(-0.2)2
+2
What is the value of the expression?
Enter your answer as a decimal in the box.
Answer
-4.25
Step-by-step explanation:
I used this site: https://www.symbolab.com/solver/algebra-calculator
Have a great day !
An expression is a combination of numbers, variables and operators.
64.5 is answer for -[4.1-3(2.2)]/(0.2)^2+2
What is Expression?An expression is a combination of numbers, variables and operators.
-[4.1-3(2.2)]/(0.2)²+2
Use the BODMAS rule to simplify.
Minus of four point one minus three times of two point two. divided by minus zero point two square plus two.
= -[4.1-6.6]/0.04+2
four point one minus six point six is minus two point five.
= -[-2.5]/0.04+2
Two point five divided by zero point zero four
=2.5/0.04+2
Sixty two point five plus two
=62.5+2
=64.5
64.5 is answer for expression -[4.1-3(2.2)]/(0.2)^2+2
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please help ME I BEG YOU!!!!!!!
Answer:
Lines of symmetry.
Step-by-step explanation:
Hope it helps!!!!
a) 148+0.8
b) 0.024 + 0.000 16
c) (0.2) + (0.1)
Answer:
a) 0.8b+148
b) 0.02416
c) 0.3
Step-by-step explanation: