Answer:
(x-3) (x-7)
Step-by-step explanation:
Yes she is correct because
Break the expressions into groups
= (x^2-3x)+(-7x+21)
Factor out x from x^2 - 3: x (x - 3)
Factor out -7 from -7 + 21: -7 (x - 3)
= x(x-3)-7(x-3)
Factor out common terms x - 3
Answer: = (x-3)(x-7)
Susie filled up at the gas station where it costs $3.06 per gallon. She put 22.5 gallons of gas in her vehicle. She also bought a fountain drink for $1.89. How much did she spend at the gas station?
Answer:
70.74
Step-by-step explanation:
Write an equation with the words below:
Three less than five times a number is 12.
Use x as the variable.
Answer:
5-3x12
Step-by-step explanation:
What is the median of this data set? Shield Darter 1 2 3 4 5 6 7 2 3 4 5 6 7 8 9 10 Number of Shield Darter + AE niminler
Answer:
4
Step-by-step explanation:
The median is the middle number
There are 15 data points
15/2 = 7.5
The middle number is the 8th number
The median is 4
Answer:
4
Step-by-step explanation:
median you need to put the numbers in order
2, 2, 2, 3, 4, 4, 4, 4, 6, 6, 7, 7, 7, 8, 9
then you cancel them out one by one
2, 2, 2, 3, 4, 4, 4, 4, 6, 6, 7, 7, 7, 8, 9
x. x. x. x. x. x. x. x. x. x. x. x. x. x
4 is the median
Mind lending a hand here? (Please answer both)
Which expression is equivalent to 2(y+4)+3(x+2x) The answers I have as multiple choice is
1. 2y+8+9x
2. 2y+4+9x
3. 2y+4+5x
4. 2y+8+5x
Answer:
2y+8+9x
Step-by-step explanation:
2(y+4)+3(x+2x)
times 2 into y and 4 and times 3 into x and 2x
2y+8+3x+6x
add both 3x and 6x x
2y+8+9x
What is the value of x when y = 4?
Answer:
4
Step-by-step explanation:
because when you add y=4 the answer you get is 4
Solve 7 2 3 − ( 1 2 4 + 3 6 8 ) . Choose the number to complete the mixed number. Numbers may be used once or not at all. ASAP pls
Answer:
[tex]2\frac{5}{12}[/tex] is your answer.
Step-by-step explanation:
[tex]7\frac{2}{3} -(1\frac{2}{4} +3\frac{6}{8} )\\\\\frac{23}{3} -(\frac{6}{4} +\frac{15}{4}) \\\\\frac{23}{3} -(\frac{21}{4})\\\\\frac{92-63}{12} \\\\\frac{29}{12} \\\\2\frac{5}{12}[/tex]
help ill give brainlest pls
Answer:
D
Step-by-step explanation:
Label the coordinate plane with the numbers so you can see it, you can also use a coordinate plane from online for a reference
Graph the inequality below on the number line
Answer:
Place a filled in dot on the 8 and make a line to the right.
Step-by-step explanation:
hope this helps you :)
helpppppppppppppppppppppppp
Answer:
approximately 0.577215664901532860606512....
Can you help with this question please
*30* points to anyone who answer correctly and please show the work if u can
Answer:
reflection over y axis
Step-by-step explanation:
it flips over the y axis like a mirror
I need help with this one
Q13
Answer:
x= 2 5/6
Step-by-step explanation:
1/3= 2/6
2 1/2= 2 3/6
2/6+ 2 3/6= 2 5/6
Hope this helps! :)
1. Write a short definition of each statistical term (mean, median, and mode).
2. Provide an example of each statistical term (mean, median, and mode).
3. Then describe how you might use each term in your daily activities, such as grocery shopping.
Answer:
1.
Mean- AverageMedian- the middle number in a sorted, ascending or descendingMode- the most commonly observed value in a set of data2.
Using the example of- 1, 2, 2, 3, 3, 3, 4, 5, 6, 7
Mean- Average, (the sum of every value)/10(# of values)= 3.2
Median- 3 (even though there are 2 3s, but add them up and divide the sum by 2)
Mode- 3
3. Well... you could use these data to do science reports etc, ofc in the world of academics, you would need to use this kind of statistics terms a lot. In normal life, you might have to compare the price of similar products and see which is the best to purchase, seeing the value of the median of the entire set of data.
Step-by-step explanation:
On a piece of paper, use a protractor to construct a triangle with angle measures of 30° and 40°.
Select from the drop-down menu to correctly classify the triangle.
A triangle with angle measures of 30° and 40° is
Acute
obtuse
right
Step-by-step explanation:
The answer is b. an obtuse. This is because if it were a right-angled triangle, then 90 + 30 + 40 would equal 180 and it doesn't. It's obtuse because 30 + 40 = 70, and triangles have to add up to 180° so the last angle would need to be 110°, which is an obtuse angle. I hope this helps!
Function B is a linear function that goes through the points shown in the
table
1
x 1 3 4 6
y 1 9 13 21
Which statement correctly compares the rates of change of the two
functions?
O A The rate of change of function A is
-2.
The rate of change of function B is 4.
B. The rate of change of function A is
The rate of change of function B is 8.
-2
C. The rate of change of function A is 1.
The rate of change of function B is 8.
D. The rate of change of function A is 1.
The rate of change of function B is 4
Answer:
D
Step-by-step explanation:
rate of change of function b = (9-1)÷2=4
help me I'll give brainliest to the person with the correct answer
Answer:
Step-by-step explanation:
A=a+b2h=13+312·16=352
Answer:
352
Step-by-step explanation:
If we use the area formula for trapezoid which is A=h((a+b)/2) and we plug in which would be ((13 + 31) /2 )* 16 we get 352
I dont understand this.
Answer:
i dont either.
Step-by-step explanation:
People are randomly chosen from a group of 7 boys and 5 girls. Determine which scenario is more likely to happen.
A.Three boys are chosen in a row and after each boy is picked, he goes back into the group and can be chosen again
B.Two girls are chosen in a row and the first girl who is chosen, cannot be chosen again a second time.
Answer:
A
Step-by-step explanation
Well the boys can be chosen again all in a row but the girls cdan't therfore the answer is A
Hope This Was Helpful!
Inaaya has a jar of coins containing only nickels, dimes, and quarters. A nickel is
worth 5 cents, a dime is worth 10 cents, a quarter is worth 25 cents, and a dollar
is worth 100 cents.
The ratio of the number of quarters to the number of dimes to the number of
nickels in the jar is 9 : 3 : 1. The total value of all the coins in the jar is $18.20.
How many coins does Inaaya have in her jar?
Answer:
91 total coins
63 quarters, 21 dimes, 7 nickels
Step-by-step explanation:
What I did first was did (9 * 0.25) + (3 * 0.10) + (1 * 0.05) to establish a formula. Next, I did trial and error until I met the appropriate number, but since they needed to stay within a ratio, every time I increased the nickels by one, I needed to increase the dimes by 3 and the quarters by 9. I eventually got to (63 * 0.25) + (21 * 0.10) + (7 * 0.05) = $18.20
A dollar is usually divided as nickels, dimes and quarters. The total number of coins Inaaya have in her jar is 91
How to obtain real measurements from the ratio of two measurements?Suppose the real measurements were "a" and "b"
Then their ratio will be formed as
[tex]\dfrac{a}{b} = \dfrac{p \times x}{q \times x} = \dfrac{p}{q}[/tex]
where [tex]x[/tex] is a common factor (not 1)
This shows that to get the real measurements from the given ratio, we need to assume to have some factor possibly cancelled from both the numerator and the denominator.
Thus, a = px, b = qx
For the given case, let Inaaya has got the number of coins per type as:
Number of nickels = xNumber of dimes= yNumber of quarters = zThus, total number of coins she get = x + y + z
Since we know that: a Nickel = $0.05, a Dime = $0.10, and a Quarter = $0.25
Thus,
Total value of money = [tex]$0.05 \times x + 0.10 \times y + 0.25 \times z[/tex] (in dollars)
Since it is given that she has got total amount in dollars as $18.20, thus,
[tex]0.05x + 0.1y + 0.25z = 18.2\\[/tex]
Also, let the ratio given is by cancelling a factor F, then
as it is given that:
Number of quarter : Number of dime : Number of nickel = 9 : 3 : 1
Number of quarters = z = 9FNumber of dimes = y = 3FNumber of nickels = x = 1F = FThen, using the equation we got for x, y, and z, we get:
[tex]0.05x + 0.1y + 0.25z = 18.2\\\\0.05(F) + 0.1(3F) + 0.25(9F) = 18.2\\0.05F + 0.3F + 2.25F = 18.2\\2.6F = 18.2\\F = 18.2/2.6 = 7[/tex]
Thus, number of quarters = 9F = 9 times 7 = 63
Number of dimes = 3F = 3 times 7 = 21
Number of nickels = 1F = F = 7
Total coins = 63 + 21 + 7 = 91
Thus, the total number of coins Inaaya have in her jar is 91
Learn more about solving linear equations here:
https://brainly.com/question/13722693
GIVING BRAINLIEST FOR BEST ANSWER!
Solve two and one third times four fifths.
A) Four sixths
B) Twenty eight fifteenths
C) Twenty seven fifteenths
D) Twenty eight sixths
Answer:
B Twenty eights fifteenths!!
Step-by-step explanation:
Please help!! I literally have no idea what to do here.
Answer:
4.9y² + 2y + 4.7
Distributive property
Step-by-step explanation:
[tex]3.9y^2+5.8+4y-1.1-2y+y^2[/tex]
collect and combine like terms:
[tex]\implies 4.9y^2 +2y+4.7[/tex]
Distributive property
The distributive property states that an expression which is given in form of A (B + C) can be solved as A x (B + C) = AB + AC. Similarly, A (B - C) can be solved as A x (B - C) = AB - AC
11. (05.05 MC)
The length of a rectangle is shown below:
If the area of the rectangle to be drawn is 90 square units, where should points C and D be located, if they lie vertically below A and B, to make this rectangle? (1 point)
A. C(4, −5), D(−3, −5)
B. C(5, −4), D(−4, −4)
C. C(5, −5), D(−4, −5)
D. C(−5, 5), D(−5, −4)
Answer:
the answer is D
Step-by-step explanation:
i just eliminated A B and C and the only answer it remained was D so your welcom
jk + 4m/2 Can somone explain this to me please
Answer:
Since J = 3, K = 6, and M = 12, the equation means:
(3 • 6) + (4 • 12 ÷ 2) = ???
Step-by-step explanation:
This is because when variables are next to each other and we know what they are equal to, it is the same as saying 3 • 6. So, when two variables are next to each other, they are being multiplied. Same with 4m/2. / can also mean division. And since 4 is next to m, the two are being multiplied. All together, the answer to this equation is 42. Hope this helped!
Answer:
(3*6) +((4*12)/2)
Step-by-step explanation:
j=3 k=6 M=12
two variables next to each other is multiplication
and use order of operations (PEMDAS)
42 is the answer
A rational number is a number that can be written as a ratio
( Can you show your work please thank you! )
True
or
False
Answer: True.
Step-by-step explanation:
A rational number can be written as a ratio because a rational number is a number that is written as a ratio of 2 integers. A rational number is written in pq format where p and q are the integers. The numerator and denominator are integers.
Help, I need to figure this out.
Answer:
1) y = -1/2x - 1
2) y = -1
3) y = -2/4
4) y = 5/2 - 3
Step-by-step explanation:
1)
use rise (up or down) over run (left or right)
the rise is -1
the run is 2
therefore, the slope is -1/2
the y intercept is -1 (y intercept is when it touches the Y line)
y = -1/2x - 1
2)
y = -1
3)
y = -2/4
4)
y = 5/2 - 3
Let me know if this helps
What multiplies to give you 15, and adds to give you -10?
The answer to this question is: 15
Write (5y) *3 without exponents.
*Power of Three.
If the problem is (5y)³ then the following is true,
Answer:
(5y)(5y)(5y)
Step-by-step explanation:
(5y)³ means that (5y) is being multiplied by itself three times. This can be written as (5y)(5y)(5y).
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly.
- Heather
Answer:
5y × 5y × 5y
Step-by-step explanation:
What is a constant of proportionality?
The unit rate between the two quantities is directly proportional.
The interval through which a variable changes concerning time.
The relationship between two quantities where the ratio comparing them is always constant.
The ratio between two quantities is simplified so that the denominator is one.
c
The constant of proportionality is the ratio that relates two given values in what is known as a proportional relationship. Other names for the constant of proportionality include the constant ratio, constant rate, unit rate, constant of variation, or even the rate of change.
An example is 4/6 or 6/9
what are the four parts of mathematical system?
Answer:
Structure of Mathematical Systems Mathematics can be divided into four major areas- higher arithmetic, algebra, geometry, and analysis.
Answer:
Sorry I didn't get the answer option first
Step-by-step explanation:
higher arithmetic, algebra, geometry, and analysis.
Arithmetic: It is the oldest and the most elementary among other branches of mathematics. It deals with numbers and the basic operations- addition, subtraction, multiplication, and division, between them.
Algebra: It is a kind of arithmetic where we use unknown quantities along with numbers. These unknown quantities are represented by letters of the English alphabet such as X, Y, A, B, etc. or symbols. The use of letters helps us to generalize the formulas and rules and also helps you find the unknown missing values in the algebraic expressions and equations.
Geometry: It is the most practical branch of mathematics that deals with shapes and sizes of figures and their properties. The basic elements of geometry are points, lines, angles, surfaces and solids.
There are some other branches of mathematics that you would deal with in the higher classes.
Trigonometry: Derived from two Greek terms, i.e., trigon (means a triangle) and metron (means measurement), it is the study of relationships between angles and sides of triangles.
Analysis: It is the branch that deals with the study of the rate of change in different quantities. Calculus forms the base of analysis.
HELP ASAP!!! 3 2/5 + 5 1/5 + 2 4/5
Answer: c
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
covert all to fractions
3*5 to get 15 and then add 2 to get 17/5
5*5 to get 25 and then add 1 to get 26/5
2*5 to get 10 and then add 4 to get 14/5
remember your signs and get
17/5 + 26/5 - 14/5