Answer:
1 1/8
Step-by-step explanation:
Divide 2 1/4 by 2.
Suppose you are interested in testing whether the mean earning of men in California differs significantly from the mean earning of men in New York. If the number of men from California in the sample is 123 and the number of men from New York in the sample is 88, how many degrees of freedom are there?
Answer:
(123+88)-2= 209
Step-by-step explanation:
Which expression represents the factored form of 6x2-13-5 ?
Answer:
For the quadratic trinomial the following formula
, where are trinomial roots, holds.
1. For trinomial find the roots
2. The factoring form is
Answer: correct option is B.
Step-by-step explanation:
Answer:
(2x - 5)(3x + 1)
Step-by-step explanation:
Do you mean 6x^2 - 13x - 5?
6x^2 factors into 6x, x or 3x, 2x
-5 factors into -1, 5 or -5, 1
Use combinations of the factors until you get the correct trinomial.
6x^2 - 13x - 5 = (2x - 5)(3x + 1)
Find the measure of each numbered angle.
angle 1 is
angle 2 is
angle 3 is
Answer: 360
253
Step-by-step explanation:
Drag the tiles to match each equation to its number of solutions. Each tile may be used only once.
Answer:
Hello! Brainly is used for help on homework not for joking around. Next time you ask a question please make sure to add something your confused with you will most likely get help!
BrainlyMiddleSchool
Answer:
1- one solution 2- many solutions 3- no solution
Step-by-step explanation:
Need ASAP
....................
Answer:10/15
Step-by-step explanation:10 divided by 5=2
15 divided by 5=3 in words 10/15 is simplified to 2/3
Solve for m. -5m=-35 m=
Answer:
m = 0
Step-by-step explanation:
Solve: Add -35m to -5m
-5m = -35m
+35m
30m = 0 *note: its okay to have 0 in this spot*
divide 0/30
m=0 because you can't divide by 0
The value of m is 7 for the given statement -5m = -35.
What are mathematical operations?The term "operation" in mathematics refers to the process of computing a value utilizing operands and a math operator. For the specified operands or integers, the math operator's symbol has predetermined rules that must be followed. In mathematics, there are five basic operations: addition, subtraction, multiplication, division, and modular forms.
Given an expression
-5m = -35
Divide by -5 on both sides
m = 7
Therefore, For the given expression -5m = -35 the value of m is 7.
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HELP!! ASAP!! Will mark Brainliest to first correct answer !!
Answer:
A. -13 + i
Step-by-step explanation:
(5 - 9i) + (-4 + 7i) = 1 - 2i(1 - 2i) - (14 - 3i) = -13 + iI hope this helps!
-66/22 to a decimal PLEASE I NEED THE ANSWER!!! I'LL MARK BRAINLIEST
Answer: -3
Step-by-step explanation:
Answer:
-3
Step-by-step explanation:
To turn a fraction into a decimal, all we need to do is divide the numerator by the denominator. But first, we can simplify! -66/22 simplifies to -3/1 when you divide by 22 on the top and bottom. Now, it's a lot easier to divide. -3/1=-3. -3 is technically already a decimal...you just can't see the decimal point. The decimal point is actually behind -3, so it looks like this: -3.0
Have a great day! Hope this helps!!! ^^
Which is a correct interpretation of the slope of the line in this graph? (2,8) (7,6)
The volume of water in the tank is decreasing by 2 L per hour.
The volume of water in the tank is decreasing by 0.2 L per hour.
The volume of water in the tank is decreasing by 2.5 L per hour.
The volume of water in the tank is decreasing by 0,4 L per hour
Answer:
The volume of the water in the tank is decreasing by .4 an hour
Step-by-step explanation:
A town has a population of 17,000 and grows at 3% every year. what will be the population after seven years, to the nearest whole number
Answer:
20570
Step-by-step explanation:
3% of 17,000 is 510 so 17,000+7(510)=20570
Answer:
3570
Step-by-step explanation:
A 40-degree angle is translated 5 inches along a vector. What is the angle measurement, in degrees, of the Image?
Answer:
40°
Step-by-step explanation:
As clarified in an online document, a translation along a vector (which is a line in a plane) of a figure, is equivalent to a translation along a coordinate grid, and therefore, given that a translation is a form of rigid transformation, the the dimensions and inclinations of the rays forming the preimage are the same as those in the image and the angles measurement in the preimage and the image are equal.
Therefore, given that the angle measurement of the image is 40-degrees, the angle measurement of the image is also 40-degree (40°) angle.
What is the geometric mean of 3 and 6
Answer:
The mean is 4.5
Step-by-step explanation:
u add the numbers and divide by how many numbers there are
In isosceles ABC, AB=AC. if B=55,calculate A
Answer:
Two base angles of an isosceles triangles are equal.
55 + 55 + a = 180
110 + a = 180
a = 180-110
a = 70
20
16
12
Cost (dollars)
8
4
0
4 8 12 16 20
Amount of Tea (ounces)
Which equation models this relationship?
Oy=
Oy = 40
#thisisacryforhelp!!!
Answer:
y=4x
Step-by-step explanation:
you just have to find the slope!
What equation in slope-intercept form represents the line that passes through the points (1, -6), (-3, 10).
Answer:
y = −4x − 2
Step-by-step explanation:
Hope This Helps!
Plz Mark Brainliest!
Have a Happy Thanksgiving!
molly bought a lunch special that was originally $14 today it is on sale for 20% off what is the sale price of the lunch special
hurry please!!
You drive a delivery truck. This week, your daily mileage totals were 215, 183, 258, 192, and 75 miles. The standard deviation for the data is 60.6, and the range is 183.
Which measure of center is most appropriate, and what is the value of the measure of center?
mean; 140
mean; 145
median; 192
mean; 258
median; 258
Answer:
Median is 192! because medians are the numbers right in the middle after the numbers are out in numerical order
9. What is the domain of the relation {(−2, 4), (1, 3), (0, −4), (3, 2)}?
Answer:
{-2, 0, 1, 3}.
Step-by-step explanation:
First of all domain is the x- coordinates. The domain of the relation is
{-2, 0, 1, 3}.
Hope this helped! If so, plz mark brainliest.
The domain of the given relation i.e. {(−2, 4), (1, 3), (0, −4), (3, 2)} should be considered as the (2,1,0,3).
What is the domain in relation?It is the set of all x values and the range represent the set of all y values with respect to the set of ordered pairs. It should be written as the (x,y) at the time when the set of ordered pairs, so first we have to find the domain for x values from the relation.
hence, The domain of the given relation i.e. {(−2, 4), (1, 3), (0, −4), (3, 2)} should be considered as the (2,1,0,3).
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What is the first step in simplifying the expression 11x - 2 - 3(1 -7x)^2
Answer:
multiply 3 by the one and -7x
can you put this as the brain list because i need one more to level up
Step-by-step explanation:
Answer: Apply the exponent
Step-by-step explanation: Remember the acronym PEMDAS. Since you can't simplify the parentheses, move on to applying the exponent 2 to (1 - 7x)
Mr. G drove a total of 252 miles and used 12 gallons of gas last weekend. What is the unit rate of miles to 1 gallon?
Answer:
21 miles per gallon
Step-by-step explanation:
252 miles to 12 gallons
= 252/12
= 21
The unit rate of miles to 1 gallon is 21 miles to 1 gallon.
Henry can type 3500 words in 70 minutes. Colin can type 1500 in 30 minutes. Brian can type 2200 words in 40 minutes. Who types at the fastest rate of words per minute?
Given:
Henry can type 3500 words in 70 minutes.
Colin can type 1500 in 30 minutes.
Brian can type 2200 words in 40 minutes.
To find:
The person who types at the fastest rate of words per minute.
Solution:
We know that,
[tex]\text{Rate of words per minute}=\dfrac{\text{Number of words}}{\text{Number of minutes}}[/tex]
Using this formula, we get
[tex]\text{Henry's rate of words per minute}=\dfrac{3500}{70}=50[/tex]
[tex]\text{Colin's rate of words per minute}=\dfrac{1500}{30}=50[/tex]
[tex]\text{Brian's rate of words per minute}=\dfrac{2200}{40}=55[/tex]
Since 55>50, therefore Brian's types at the fastest rate of words per minute.
Use the information on the right to determine which students will have positive z-scores. Aaliyah, who completed the exam in 55 minutes Benjamin, who completed the exam in 86 minutes Cynthia, who completed the exam in 72 minutes
Answer:
B and C, Benjamin and Cynthia.
Step-by-step explanation:
Next part (Cynthia's score) is 0.2
Answer:
Here's all the answers to the assignment! This is here to help future people in order to get a good grade on e2020! :)
Use the information on the right to determine which students will have positive z-scores.
Answer(s):
B) Benjamin, who completed the exam in 86 minutes
C) Cynthia, who completed the exam in 72 minutes
Cynthia’s z-score is
Answer) 0.2
A newborn who weighs 2,500 g or less has a low birth weight. Use the information on the right to find the z-score of a 2,500 g baby.
Answer) -2
What is the z-score of a newborn who weighs 4,000 g?
Answer) 1
What weight would give a newborn a z-score of −0.75?
Answer) 3125
In the United States, birth weights of newborn babies are approximately normally distributed with a mean of ? = 3,500 g and a standard deviation of ? = 500 g.
According to the empirical rule, 68% of all newborn babies in the United States weigh between
Answer(s) 3000 g and 4000 g
95% of all newborn babies in the United States weigh between
Answer(s) 2500 g and 4500 g.
99.7% of all newborn babies in the United States weigh between
Answer(s) 2000 g and 5000 g.
According to the empirical rule, 68% of 7-year-old children are between
Answer(s) 47 inches and 51 inches tall.
95% of 7-year-old children are between
Answer(s) 45 inches and 53 inches tall.
99.7% of 7-year-old children are between
Answer(s) 43 inches and 55 inches tall.
Use the information given in the table on the right to complete each of the following statements.
Brenda is 50 inches tall. Her z-score is
Answer) 0.5
Zach has a z-score of –1.5. His height is
Answer) 46 inches.
Approximately 16 % of 7-year-old children are taller than 51 inches.
In the United States, birth weights of newborn babies are approximately normally distributed with a mean of μ = 3,500 g and a standard deviation of σ = 500 g.
What percent of babies born in the United States are classified as having a low birth weight (< 2,500 g)? Explain how you got your answer.
(Answers)
The z-score for 2,500 g is –2.
According to the empirical rule, 95% of babies have a birth weight of between 2,500 g and 4,500 g.
5% of babies have a birth weight of less than 2,500 g or greater than 4,500 g.
Normal distributions are symmetric, so 2.5% of babies weigh less than 2,500g.
What survival rate in the 10th year would make the average rate of loss over the 10-year period equal to 38.0%?
Answer: 63%
Step-by-step explanation:
First find the rate of loss that would cause the average rate of loss over the 10-year period equal to 38.0%.
Assume that rate is x.
38 = (36.2 + 29.0 + 46.2 + 37.5 + 40.9 + 40.0 + 32.6 + 40.5 + 40.1 + x) / 10
38 = (343 + x ) / 10
380 = 343 + x
x = 380 - 343
x = 37%
The survival rate is the opposite of the rate of loss which means that the survival rate is;
= 1 - rate of loss
= 1 - 37%
= 63%
a restaurant starts with 10 dozen pieces of cornbread.every order receives 2 piece of cornbread.At the end of their lunch rush,there are 28 pieces of cornbread left.How many orders did the restaurant take?
Twelve less than two-thirds a number is 48.What is the number?
Can you please help me with those two questions and don’t only do 1 if you don’t know the answer dont comment
Answer:
32 ordersStep-by-step explanation:
10 dozen = 120120 - 28x2=28x2=56120 - 56=6464 divided by 2= 32Is 0.752 a rational number?
Step-by-step explanation:
yes indeed it is rational
At a certain bookstore, you get a $5 coupon for every 4 books you buy. What is the least number of books you could buy to get $15 in coupons? Show your work.
Answer:
You need to buy 12 books to get a $15 coupon.
Step-by-step explanation:
Giving the following information:
You get a $5 coupon for every 4 books you buy.
First, we need to structure the total coupon formula:
Total coupon= 5*x
x= pack of four books
Now, for $15
15 = 5x
15/5= x
3= x
4*3= 12
You need to buy 12 books to get a $15 coupon.
explain how you would find the sign of the quotient 32÷(-2)
/
-16÷4
Answer:
PLEASE ANSWER MY QUESTION! In how many ways 3 different numbers can be chosen from 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 such that the sum of 3 numbers can be divisible by 3. Here (a, b, c); (b, c, a)...... are considered to be the same.
Step-by-step explanation:
PLEASE ANSWER MY QUESTION! In how many ways 3 different numbers can be chosen from 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 such that the sum of 3 numbers can be divisible by 3. Here (a, b, c); (b, c, a)...... are considered to be the same.
Chad washes windows after school to make some extra money. He charges $5.50 to wash each window. If the customer provides the supplies, Chad deducts $3.25 from the total cost. One customer paid a total of $27.50 and did not provide supplies. Which equation could be used to find the number of windows, w, that Chad washed for this customer?
*5.5w - 3.25 = 35.25
The 5.5w part shows that its $5.50 times each window. The -3.25 is because he deducted 3.25 from the total. And then you have the price that he got on the other side.
Here's the work to find the windows in case you want it:
5.5w-3.25=35.25
5.5w=38.50
w=7
He washed 7 windows
Answer:
5.5 w - 3.25 = 27.5
Step-by-step explanation:
Cameron is signing up for a gym membership with a one-time fee to join and then a monthly fee to remain a member. Let C represent the total cost of the gym membership over t months. A graph of C is shown below. Write an equation for C then state the y-intercept of the graph and determine its interpretation in the context of the problem. C=? The y-intercept of the function is _____ which represents?
Answer:
C= 100+25t
Step-by-step explanation:
The y-intercept of the function is 100 which represents the one-time joining fee.
that is the correct answer, hope it helped!
The y-intercept of the function is 100 which represents a one-time fee to join.
Given that,
Cameron is signing up for a gym membership with a one-time fee to join and then a monthly fee to remain a member. Let C represent the total cost of the gym membership over t months.
The graph of the function C = 100 +25m is given,
the equation is the relationship between variables and represented as y = ax + b is an example of a polynomial equation.
Here,
C= 100+25t
Where C represents the total charge,
t represents the number of months as of 25 per month,
And 100 represents the one-time chargeable fee to join.
Thus, the y-intercept of the function is 100 which represents a one-time fee to join.
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Use square roots to solve the equation x^2 = −25 over the complex numbers. Enter your answers in numerical order.
Answer:
Step-by-step explanation:
x^2= -25
x=5i and -5i
Answer:
The answer is 5
Step-by-step explanation:
x^2= -25
x=√-25
x=5