Finish solving the system of equations. x - 5y = 6 -x + 2y = -3 -3y = 3 What is the value of y? Substitute the value of y back into one of the original equations to find the value of x. What is the value of x?
Answers
Answer:
y = -1, x = 1
Step-by-step explanation:
-3y = 3
y = 3/-3
y = -1
-x + 2y = -3
-x + 2(-1) = -3
-x - 2 = -3
-x = -1
x = 1
Answer: The answer is -1 and 1.
Step-by-step explanation: I got this correct on Edge, Hope this helps!
Related Questions
Michael is a painter who sells his work through a shop. On average, if he paints 15 small paintings over the course of a month, 3 of them will sell within a week of being taken to the shop. This month Michael plans to paint 90 small paintings. What is a reasonable prediction of how many paintings he will sell in the first week of the next month?
Answers
Answer:
litttle mikey afton sells PAINTINGS?!
Step-by-step explanation:
Can solve this for me please I will give brainliest to who ever answers correctly
Answers
7/10 = 0.7 = 70%
2/5 = 0.4 = 40%
68/100 = 0.68 = 68%
7/20 = 0.35 = 35%
3/5 = 0.6 = 60%
33/50 = 0.6 = 66%
1/20 = 0.05 = 5%
13/50 = 0.26 = 26%
2. a. 49%, 1/2, 0.55, 3/5
b. 0.2, 1/4, 27%, 3/10
c. 9/10, 95%, 97/100, 0.99
d. 0.09, 10%, 11/100, 0.125
3. 0.5 = 50%
50/2=25
100-25=75
3/4=75
= Yes Chris is correct
4. 3/5=6/10=60%
60-10=50%
50/2=25%
10+25=35%
= No, Emily is not correct
The Fernandez family has a square driveway with an area of 210.25 m2. Find the perimeter of the driveway. Round your answer to the nearest foot. There are approximately 3.3 ft in 1 meter. What’s the answer?
Answers
Answer:
191 ft
Step-by-step explanation:
Mathematically, the area of a square is the square of the length of its side
so if the side is l, the area will be l^2
we need the length before we get the perimeter
Thus;
l^2 = 210.25
l = √210.25
l = 14.5 m
We now need to get the perimeter of the drive way
The perimeter of the driveway will be 4 * l
= 4 * 14.5 = 58 m
we now convert this to ft
From the question;
3.3 ft = 1 m
x ft = 58 m
x = 58 * 3.3
x = 191.4 ft
To the nearest foot, this is 191 ft
40 sneezes in 20 minutes as a unit rate
Answers
Answer:
Unit rate = 2 sneezes per minute
Step-by-step explanation:
40 sneezes in 20 minutes.
One quantity is 1 in unit rate with respect to other.
Unit rate = [tex]\frac{40\ sneezes}{20\ minutes}[/tex]
Unit rate = 2 sneezes per minute
40 sneezes
——————- = 2 sneezes
20 minutes
Telephone survey contact rates. Telephone surveys typically have high rates of nonresponse. This can cause bias when the variables being studied are associated with factors that determine the response rate. For mail and home surveys, it is known that advanced-warning letters letting participants know that a survey is on its way increases overall response. A study investigated the utility of leaving messages on answering machines as a means of encouraging participation in telephone surveys. A message was left or not left at random when an answering machine picked up the first call of a telephone survey.
Contacted Not Contacted Household
Advance warning 200 91 291
No advance warning 58 42 100
a. Descriptive statistics: Calculate contact "rates" (proportions) for each of the groups.
b. Hypothesis test: Test the proportions for a significant difference. Show all hypothesis-testing steps.
c. Estimation of the effect size: Calculate the difference in proportions and its 95% confidence interval. Does this effect seem large enough to be important?
Answers
Find the 63rd term of the arithmetic sequence
2
,
9
,
16
,
.
.
.
2,9,16,
Answers
Answer:
443
Step-by-step explanation:
this can be put into the linear equation y = 7x + 2
substitute 63 for x
y = 7(63) + 2
simplify
y = 441 + 2
y = 443
the 63rd term is 443
hope this helps <3
what is the value of a?
Answers
Answer:
answer 3, hope this is right
Step-by-step explanation:
PLEASE HELP DUE IN 20 MINUTES!!!! I will give brainliest for first correct answer
A Jaguar XJ220 is 41 mph slower than a Bugatti Veyron, which can travel 253 mph. How fast does the Jaguar XJ220 travel? How would you write this as an equation with a variable in the middle for the missing number?
Answers
Answer:
212 miles per hour
Step-by-step explanation:
253 - 41 = 212
pls help, basic algebra problem with guidance
Answers
Answer:
x = 43000/9 or 4777.7 (i'm not 100% sure on this, so i apologize if i'm incorrect)
Step-by-step explanation:
The equation you were given was:
amount of solution • rate of concentration = amount of pure acid
By looking at the question, you can conclude that the amount of solution being used is 18%. You need to turn that into a decimal, therefore it'd be 0.18.
You can also conclude that the amount of pure acid being used is 860 milliliters. So, from this, you're able to fill in 2 parts of the equation:
0.18 • x = 860 mL
Now, all there's left to do is solve for x! To do this ,you'll need to rearrange the multiplication problem into a division problem.
860 / 0.18 = x
x = 43000/9 or 4777.7
How can we write 2.7 in words
Answers
Answer:
Two and seven-tenths.
Step-by-step explanation:
How long is 10% of 60 minutes. Explain how you know.
Answers
Answer:
6 minutes
Step-by-step explanation:
60 * 10% =
60 * 0.1 =
6
Answer6
Step-by-step explanation:
You would divide it by 10
Marcia is 11 years old now. 9 years ago Winona was three times as old as Marcia was then. How old is Winona now?
Answers
Answer:
11-9=2
2*3=6
6+9= 15
so 15? Is that right
3 x 2 = 6
6 + 9 = 15
Winona is 15 years old.
Identify each equation as linear function, quadratic, or neither?
The equations:
Y=3x-15
Y=3(x-15)^2 its a power of 2
F(x)=2.56-(x-4.78)^2power of 2
F(x)=4(x-7)+9
F(x)=17(x-7)^3+9 power of 3
F(x)=13x^2-16x+14
Answers
Consider the scale drawing of a skate park.
A skate park has side lengths of 2 feet, 4 feet, 1.5 feet, and 3 feet.
The 2 ft side length of the scale drawing corresponds to a side length of 120 feet for the actual skate park.
What is the scale factor?
What operation will find the dimension of the actual skate park that corresponds to 4 ft on the scaled drawing?
Answers
Answer:
The scale factor is 1/60
we know that
The scale factor is equal to the ratio between the side length of the scale drawing to the corresponding side length in the actual
so
2/120 = 1/60
The scale factor is 60 and the dimension of the actual skate park that corresponds to 4 ft on the scaled drawing is 240 feet.
What are Similar Triangles?Two triangles are said to be similar if their corresponding angles are congruent and the corresponding sides are in proportion .
Given that a skate park has side lengths of 2 feet, 4 feet, 1.5 feet, and 3 feet.
The 2 ft side length of the scale drawing corresponds to a side length of 120 feet for the actual skate park.
We need to find the scale factor
scale factor = actual length / corresponding length in the scale drawing
scale factor = 120 ft / 2 ft
scale factor = 60
Therefore, the scale factor is 60.
The dimension of the actual skate park that corresponds to 4 ft on the scaled drawing, we can multiply the length in the scale drawing by the scale factor:
actual length = length in the scale drawing × scale factor
actual length = 4 ft × 60
actual length = 240 ft
Hence, the scale factor is 60 and the dimension of the actual skate park that corresponds to 4 ft on the scaled drawing is 240 feet.
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Chef Leon is making 14 dozen cookies for the school bake sale. He uses 712 cups of pecans to make the cookies. How many cups of pecans, to the nearest hundredth, are in each cookie?
A. 22.4 cups
B. 0.44 cup
C. 168 cups
D. 0.04 cup
Answers
Answer:
D
Step-by-step explanation:
Easy peasy
Answer:
D
Step-by-step explanation:
What is the other name for continuous variables?
Nominal variables.
Scale variables.
Dummy variables.
Categorical variables
Answers
Answer:
Nominal variables.
Step-by-step explanation:
In Mathematics, a random variable can be defined as any variable whose values are determined by the outcome of a random experiment.
Basically, random variables are classified into two (2) main categories and these are;
1. Discrete variable: a discrete variable is a data set in which the number of possible values are either finite or countable. For instance, the value of a fair die, number of sweets in a jar, number of eggs in a crate etc.
2. Continuous variable: a continuous variable is a data set having infinitely many possible values and those values cannot be counted, meaning they are uncountable. Any quantity such as height, volume, weight, density, length, pressure, temperature, speed, distance, time are generally a continuous random variable.
Hence, the other name for continuous variables is nominal variables because they are numerical in nature.
Ummmmmmmmmmm...Halp.......IM KINDA DESPERATE
Answers
Answer:
1 and 4 and maybe 2 the conversions are below in order
Step-by-step explanation:
12.6>8
-4.5<.3
3<2.2
3.1<9
1.3<1.2
hope this helps im not positive about the second one being true or not
- 7х +4y = 24
Чx - чу = 0
Answers
Answer:
(-8,-8) or x = -8 & y = -8
Step-by-step explanation:
add both equations to get:
-3x=24
x = -8
now substitue x = -8 into the fisrt equation:
-7(-8) + 4y = 24
56 + 4y = 24
4y = 24 - 56
4y = -32
y = -8
now the answer would be in (x,y) form:
(-8,-8)
Jill is making a long cape. She needs 7 1/3
yards of blue fabric for the outside of the cape. She needs 6 2/3
yards of purple fabric for the lining of the cap
How much more blue fabric than purple fabric should Jill buy?
Answers
Answer: 2/3yards
Step-by-step explanation:
From the question, we are informed that Jill is making a long cape and that she needs 7 1/3yards of blue fabric for the outside of the cape and that she needs 6 2/3yards of purple fabric for the lining of the cap.
To calculate the yards of blue fabric that'll be needed more than purple fabric,, we subtract 6 2/3 from 7 1/3. This will be:
= 7 1/3 - 6 2/3
= 2/3
She needs 2/3yards of blue fabric more.
34. If () = x + 3x-2 , find f(-2).
Answers
PLEASE HELP THANK YOU ILL MARK BRAINLESS
Answers
Answer:
m = 3/4
Step-by-step explanation:
We have the points (-2,2) and (2,5). We can use those to calculate the slope:
m = 5 - 2 / 2 - (-2)
m = 5 - 2 / 2 + 2
m = 3/4
help with this question
Answers
Answer: choice D) [tex](y-x)(y-z) \le 0[/tex]
=====================================================
Explanation:
Unfortunately, we don't have enough info to determine what x,y, and z are.
However, we do know that x < y < z is the case. Though to be more technical, x = y or y = z could be possible, but for now we'll ignore these cases.
So we'll focus on x < y < z.
This is true because 25% of the values are below x and 50% of the values are below y. So naturally x is smaller than y. Also, 75% of the values are smaller than z, so z is the largest of the three values.
Since x < y, this makes 0 < y-x when you subtract x from both sides. This is the same as saying y-x > 0. So y-x is positive.
On the other hand, because y < z, this leads to y-z < 0. So y-z is negative.
We have
y-x is some positive valuey-z is some negative valuetherefore, (y-x)(y-z) = (positive)*(negative) = negative
Overall,
(y-x)(y-z) < 0
So far, we can see that we have strict inequality. However, it is possible to have x = y or y = z be possible. Consider a set like {5,5,5,7,9}. You should find that Q1 = 5 and Q2 = median = 5 also. This example is one of infinitely many where x = y. Due to something like this, we must update (y-x)(y-z) < 0 into [tex](y-x)(y-z) \le 0[/tex]
A guitar is originally priced at $150. The online retailer gives a discount and the guitar is now priced at $75. Enter the percentage discount for the cost of the guitar.
Answers
Answer:
50%
Step-by-step explanation:
75 is half of 150.
150/2 = 75 --> 50%
Find the length of the unknown side. Round your
answer to the nearest tenth.
A. 20 cm
B. 400 cm
C. 10 cm
D. 29.2 cm
Answers
Explanation:
Perform the indicated operation.
2 −3
4 −1
−
−2 7
11 0
=
a b
c d
a = , b = , c = , d =
Answers
Answer:
a= 4
b= -10
c= -7
d= -1
Step-by-step explanation:
Answer:
a= 4
b= -10
c= -7
d= -1
Step-by-step explanation:
simplify :
7/6 ÷ (8/3 - (7/4 - 1/2) ) × 4/21
Answers
Answer:
The correct answer is
[tex] \frac{8}{51} [/tex]
The diameter of a circle is 8 cm. Find its circumference in terms of pi
Answers
Answer:
25.13 or 8 × pi
Step-by-step explanation:
diameter × pi = circumference
Answer:
8π
Step-by-step explanation:
formula for circumference of a circle=
C=2πr, r= radius
the radius is the diameter divided by 2
radius= 8/2=4
plug into formula
C=2π4
multiply 2 and 4
C=8π
Solve for u.
64 = 0 + 36
U =
Answers
Answer:64=36
Step-by-step explanation:
What is 2x + 9 < 16; 4
Answers
Answer:
16 I think
Step-by-step explanation:
Tyrone’s hourly wage is $18 and his net pay is 72% of his earnings. Tyrone spends about $1,800 on his monthly expenses. If Tyrone works 40 hours per week and has no other sources of income, what is his total monthly cash inflow? (Hint: Assume that there are 4 pay periods per month.)
a.
$273.60
b.
$1,080.00
c.
$1,800.00
d.
$2,073.60
Answers
His total monthly cash inflow is $2073.6 which is the correct answer would be option (D).
What are Arithmetic operations?
Arithmetic operations can also be specified by subtracting, dividing, and multiplying built-in functions. The operator that performs the arithmetic operation is called the arithmetic operator.
We have been given that Tyrone’s hourly wage is $18
And he spends about $1,800 on his monthly expenses
Since Tyrone works 40 hours per week
So Monthly hours worked would be: 40 × 4 = 160
To determine the total wage
We have multiplied the hours worked by the wage rate
So total wage = hours worked × wage rate
Total Wage = 160 × 18 = 2880
Tyrone's net salary is 72% of his total income, as determined by the formula below:
Tyrone's net salary = 72% of the total Wage
Tyrone's net salary = 0.72× 2880
Tyrone's net salary = 2073.6
Therefore, His total monthly cash inflow is $2073.6 which is the correct answer would be an option (D).
Learn more about Arithmetic operations here:
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