Answer:
x=20/3 y=17/3
Step-by-step explanation:
1. x-y=1
2. 2x+y=19
The first equation can be rewritten as 2x-2y=2
We can then subtract the second equation from this:
2x-2y=2
2x+y=19
-3y=-17
y=17/3
Plug this into to solve for x:
x-17/3=1
x=17/3+1
x=20/3
1 over 2 rational or irational
Answer:
Rational
Step-by-step explanation:
I hope this helped!
Answer:
the answer is rational
Paula knits hats. The number of hats h she can knit varies directly with the amount of yarn (y) in yards she has. The constant of proportionality is 42. Write an equation to represent the relationship between the number of yards of yarn Paula has and the number of hats she can knit.
Answer:
The equation showing the relationship between the number of yards of yarn Paula has and the number of hats she can knit is ;
h = 42y
Step-by-step explanation:
Here, we want to write an equation;
From the question, we are told that the number of hats h that can be knitted is directly proportional to the amount of yarn in yards
Since it is a proportional relationship;
h = k * y
where k is the constant of proportionality given as 42
Hence;
h = 42 * y
h = 42y
14% of 81 is what number?
Answer:
11.34
Step-by-step explanation:
14% of 81 = [tex]\frac{14}{100}[/tex] × [tex]\frac{81}{1}[/tex] [tex]\frac{14}{100}[/tex] × [tex]\frac{81}{1} = \frac{1134}{100}[/tex] 1134/100 = 11.34I hope this helps!
No.3 .HELP NEEDED ASAP
Part A
2 white, 5 red, 7 total
P(1st white) = 2/7
P(1st white, 2nd white) = P(1st white)*P(2nd white)
P(1st white, 2nd white) = (2/7)*(4/9)
P(1st white, 2nd white) = 8/63
Let m = 8/63
---------------
P(1st red) = 5/7
P(1st red, 2nd red) = P(1st red)*P(2nd red)
P(1st red, 2nd red) = (5/7)*(7/9)
P(1st red, 2nd red) = 5/9
Let n = 5/9 = 35/63
---------------
m+n = P(both are same color)
m+n = 8/63+35/63
m+n = 43/63
Answer: 43/63========================================
Part B
m = P(first white then red)
m = (2/7)*(5/9)
m = 10/63
n = P(first red then white)
n = (5/7)*(2/9)
n = 10/63
r = P(second bead isn't same color as first)
r = m+n
r = 10/63+10/63
r = 20/63
Answer: 20/63========================================
Part C
m = P(1st white, 2nd white)
m = (2/7)*(4/9)
m = 8/63
n = P(1st red, 2nd white)
m = (5/7)*(2/9)
m = 10/63
m+n = P(2nd is white)
m+n = 8/63+10/63
m+n = 18/63
m+n = 2/7
Answer: 2/7========================================
Part D
If we withdraw 1 white bead, but we add it back in, then the probability of selecting white has not changed on the second selection.
The same can be said if we picked a red bead as well. This is because we simply replace the red bead with a copy of some other red bead.
Nick's statement is another way of saying replacement is happening.
Answer: True3(x − 2y) = −12(x + 2y)
Answer:
15x-18y
Step-by-step explanation:
Distribute then combine like terms
write the equation of the line fully simplified slope-intercept form.
Answer:
y=-1/2x-8
Step-by-step explanation:
The slope is -1/2 and the y-intercept is -8.
Evaluate abc2 if a = −3, b = 6 and c = −8.
Answer:
288
Step-by-step explanation:
-3*6*-8*2=288
.002 centimeters=_____ mm
Help?
Answer: 0.02
Step-by-step explanation:
Customers at the palace pro shop receive a 10% discount if they are members. all customers must pay 7% in sales tax. The function f(x)=0.9x is used to determine the price of an item after the 10% member discount, where x is the regular price of the item. the function g(x)=1.07x is used to determine the total amount customers Pay for a purchase after all discounts are applied. Which function can be used to determine T(x), the total amount a member pays for an item with regular price of x dollars?
Answer: 0.963
Step-by-step explanation:
The function used to determine the total amount a member pays for an item with regular price of x dollars is T (x) = 0.963x.
What is discount?A discount is a reduction made from a regular or list price.
This is subtracted from the regular price of an item.
Now it is given that,
The function used to determine the price of an item after the 10% member discount,
f(x) = 0.9x,
where x is the regular price of the item.
The function used to determine the total amount customers Pay for a purchase after sales tax is applied.
g(x) = 1.07x
Now, total amount to be paid by customer for an item with regular price of x dollars
T(x) = regular price* discount * sales tax
⇒T(x) = x*0.9* 1.07
⇒T(x) = 0.963x
Hence, The function used to determine the total amount a member pays for an item with regular price of x dollars is T (x) = 0.963x.
More about function :
https://brainly.com/question/15357700
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Which group contains numbers that all round most closely to 1/2?
A: 1/5, 2/9, 4/8
B: 3/5, 2/4, 4/7
C: 3/4, 5/6, 7/9
D: 1/2, 2/7, 9/10
pls help
Answer:
I think that B is the best answer
If the maglev train travels at a constant speed of 480 kilometers per hour for 1/4 hour how far does the train travel ?
Answer:
120 km
Step-by-step explanation:
Multiply the distance traveled by the speed of the train.
1/4 hr × 480 km/hr = 120 km
QUICKKK!!! Lance's bowling score was 28 pins more than Jim's score. Lance's bowling score was 205. (a) Write an equation to determine Jim's score (j), (b) What was Jim’s score?
30 points!
Answer:
177
Step-by-step explanation: 205-28=177 ~
Find the slope of 3x+4y=-4
8 + 11x
12x + 1
What’s the value of X?
Answer:
x = 7
Step-by-step explanation:
8 + 11x = 12x + 1
-x + 8 = 1
-x = -7
x = 7
Answer:
Step-by-step explanation:
NEED HELP
what is the range?
|80 - 5x| = 4
Answer:
please be more specific
PLSSSSSS HELPPPPP ON NUMBER 6 ASAP TY TY TY
Answer:
The width is 4
Step-by-step explanation:
You would divide the area (24) by the length (6). So, 24/6=4.
Answer:
The answer is 4.
Step-by-step explanation:
You divide the area with the length.
24/6=4.
Help with this please?????
If the diameter of a circle is 50 yards, the radius is
Answer:
r = 25 yds
Step-by-step explanation:
The diameter is twice the radius, so the radius is 1/2 of the diameter
r = 1/2 d
r = 1/2 ( 50 yds)
r = 25 yds
answer: r=25yd
Hope this helps!
Plzzz help me
Suppose your business has a special checking account used just for paying the phone bill. The balance is $1530.00 this month. Next month the balance will be $1496.30, after that it will be $1432.60, and on the third month the balance will be $1428.90. Write an explicit formula to represent the balance in the account as an arithmetic sequence. How many months can you pay your phone bill without depositing any more money in the account?
A) An= 1530 + (n-1) ( -33.70); 46 months
B) An = 1530 + (n-1) (-33.70); 45 months
Please explain for me how you got the answer. Thank you so much
Answer:
B
Step-by-step explanation:
this month=1530
first month=1530-33.70=1496.30
Second =1496.30-63.70=1432.60
Third=1432.60-3.70=1428.90
Apps Managed bookmarks
Write an expression for the perimeter of the rectangle with a length of 2x and width of x.
Step-by-step explanation:
2x + 2x + x + x = Perimeter
6x = Perimeter
x = Perimeter ÷ 6
Gianna, Jada, and Brittney and a bunch of other friends had a horseshoe competition. Jada and Brittney were eliminated after two rounds because they were too busy texting but Gianna went onto round eight to win 47 pieces of gum. Later, she gave two to each of her friends. She only has 1 remaining. How many friends does she have?
Answer:
23 friends
Step-by-step explanation:
Let the number of friends she has = x
Total number of gum = 47 pieces
She gave 2 each to her friends, hence:
2x + 1 = 47
2x = 47 - 1
2x = 46
x = 46/2
x = 23
Therefore, the number of friends she has is 23
(-5, -4); y = -2x + 4
Answer:
y= -2x squared +4x+66
Step-by-step explanation:
Answer:
y= -2x squared +4x+66
Step-by-step explanation:
if 9/24 = 3/x then x is what?
Answer:
24
Step-by-step explanation:
Answer:
x=8
Hope this helps! Please mark Brainliest!
Jordan is purchasing a summer home. The home he wanted to buy was originally $227,000.
When he looked today, the home is selling for 12% less. What is the home selling for today?
Answer:
$199,760
Step-by-step explanation:
$227,000
- 12%
---------------------
$199,760
What is the area of the pentagon shown?
Answer:
The area of the pentagon is: 354
Step-by-step explanation:
First draw two auxillery lines in the upper left hand corner to make a rectangle, and a right triangle.
Now that we have a rectangle we can find its area:
18·20=360
To find the lengths of the triangle sides:
20-16=4
18-15=3
Area of a right triangle formula: (leg a · leg b)/2
3·4=12 12/2=6
Now subtract the area of the triangle from the rectangle:
360-6=354
Answer:
354
Step-by-step explanation:
A student solved the given equation and justified every step except one. What is the missing reason? A) Associative property of addition B) Commutative property of addition C) Multiplicative property of equality D) Distributive property of multiplication over addition
Given:
The statements and reasons to solve an equation.
To find:
The missing reason.
Solution:
If a, b and c are three real number, then
Associative property of addition : [tex](a+b)+c=a+(b+c)[/tex]
Commutative property of addition : [tex]a+b=b+a[/tex]
Multiplicative property of equality : [tex]a=b\Leftrightarrow ca=cb[/tex]
Distributive property of multiplication over addition : [tex]a(b+c)=ab+ac[/tex]
In the given step, [tex](x+-3)+3[/tex] is written as [tex]x+(-3+3)[/tex].
It means, only parenthesis are changed, which is possible by Associative property of addition.
So, the missing reason is Associative property of addition.
Therefore, the correct option is A.
In June, Clarissa used 115 gigabytes of data on her cell phone. Given that June has 30 days, how much data did she use on average per day?
Answer:
3.8333333333...
Step-by-step explanation:
you take how many gigabytes (115) and divided it by the 30 days, giving you 3.833333333...
The point-slope form of a line that has a slope of -2 and passes through point (5,-2) is shown below.
y+2=-2(x-5)
What is the equation in slope-intercept form?
Oy=-2x+ 12
O y=-2x+8
y=-2X-7
O y=-2x-3
Answer:
y=-2x+8
Step-by-step Explanation:
could you vote me brainliest plz? thx :)
Below is the table of values of a function. Write the output when the input is n .
Input: 4,5,8,n
Output:16,20,32
9514 1404 393
Answer:
4n
Step-by-step explanation:
We observe that each output is 4 times the corresponding input. Then 4 times n will be ...
Input: n
Output: 4n
Which part of this graph shows a nonlinear relationship?
Answer:
3
Step-by-step explanation:
