Answer:
12x-2
Step-by-step explanation:
10x+5-(-2x+3)
10x+5+2x-3
12x-2
The equation 4x2 + 8x + 15 = 0 is being rewritten in vertex form.
Fill in the missing step.
Given 4x2 + 8x + 15 = 0
Step 1 4(x2 + 2x ___) + 15 ___ = 0
Step 2 blank
Step 3 4(x + 1)2 + 11 = 0
A:4(x2 + 2x + 1) + 15 − 4 = 0
B: 4(x2 + 2x + 1) + 15 − 1 = 0
c: 4(x2 + 2x + 2) + 15 − 2 = 0
D: 4(x2 + 2x + 4) + 15 − 4 = 0
6.) Michael & Melissa both claim to be earning a C average, 70% to 79%, in their Latin Class. Use the table below to explain their reasoning and determine which student is earning a C average.
To figure out the average of Michael and Melissa we must add up all their test scores and divide the by 7; which is the number of tests they took.
Michael:
(80+76+73+70+40+25+10)/7
Melissa:
(88+83+75+70+60+65+62)/7
Michael's average is 53.4
Melissa's average is 71.9
So Melissa is earning a C in Latin.
Ummm, Is this right
Mary brought 500ml of water to school, she drank 400ml herself,and shared the remaining am9unt of wayer equally among 4 friends. What amount of water did each friend drink?
Answer:
[tex]\huge\boxed{\sf 25\ ml}[/tex]
Step-by-step explanation:
Total amount of water = 500 ml
Mary drank = 400 ml
Left:
= 500 ml - 400 ml
= 100 ml
This was divided equally among 4 friends.
So,
Each friend got:
= 100 ml/4
= 25 ml
[tex]\rule[225]{225}{2}[/tex]
PLEASE HURRY IM TIMED, The perimeter of a rectangular swimming pool is 70 yards. Its length is 25 yards. Which of the following can be used to find the width?
A.
width = (70 yd + 50 yd) ÷ 4
B.
width = (70 yd − 50 yd) ÷ 4
C.
width = (70 yd − 50 yd) ÷ 2
D.
width = (70 yd + 50 yd) ÷ 2
I thik the option C should be used.
Answer:
C
Step-by-step explanation:
There are 2 sides for length- 25+25=50
70-50=20. Divide that by 2 sides, 10 yards for width
What is the total amount due after 6 months on an initial loan of $1,400 at 12.5% annual interest.
Answer: $1487.50
Step-by-step explanation:
hey there again!
Facts:
Principal (starting amount): $1,400
Annual interest rate: 12.5% of the principal. Whenever you get an annual interest rate as a percentage, its always that percentage of the starting amount.
Time given: 6 months, 1/2 a year
the question asks "total amount due' in 6 months. Basically, we want to know how much they will have in their account after 6 months.
Step 1: Find how much interest he will get in 6 months as a percentage.
6 months is 1/2 of a year, so find 1/2 of 12.5
1/2 of 12.5
1/2 x 12.5
0.5 x 12.5
6.25%
Step 2: Find how much interest he gets, but as a number.
Principal: $1400
6.25% of 1400= $87.50
Step 3: Find the total amount of money he will have after 6 months.
he starts with 1400, and gets an additional $87.50 added to his account after 6 months. How much does he have now?
To answer this, add to find the total:
87.50+1400= $1487.50
if x equals y what does y equal
Answer:
x
Step-by-step explanation:
If x is y than y is equal to x only
how much will you have to pay back in total if you borrowed $400 from the bank for a year at 12%
You would have to pay back $448 in total after one year.
What is the amount on the loan?The simple interest formula can be expressed as;
I = P × r × t
Where I is interest, P is principal, r is interest rate and t is time.
Given the parameters:
Principal P = $400 (the initial loan amount)
Rate r = 12% = 12/100 = 0.12
Time t = 1 year
Interest = ?
To determine the interest, we can use the above formula for simple interest:
I = P × r × t
Interest = $400 × 0.12 × 1
Interest = $48
Money to be paid back will be:
Amount = Principal + Interest
Amount = $400 + $48
Amount = $448
Therefore, the accrued amount to be paid is $448.
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HELP ASAP!!!!!!!!!!!!!!!!
Answer:
52
Step-by-step explanation:
angle RQS=180-90-34=90-34=56
and then
180-56=x+72
124=x+72
x=52
Question 8(Multiple Choice Worth 5 points)
(01.03 MC)
Which expression is equivalent to 32.3-52
0
3³
Answer:
1/3^3
Step-by-step explanation:
The answer is 1/3^3 or 1/27 because 3^2 is 9 and 3^-5 is 1/243. This results in the equation 9 x 1/243. When simplified you get 1/3^3 or 1/27.
What’s the measure of x?
( It’s on khan academy ) thanks :)
50 points!!! and will give brainlyiest
Answer:
[tex]\huge\boxed{\sf x =28 \textdegree}[/tex]
Step-by-step explanation:
Given that,
∠IAK = 62°
∠IAK + ∠IAD = 90° (Complementary angles)
62 + ∠IAD = 90°
Subtract 62 to both sides
∠IAD = 90 - 62
∠IAD = 28°∠IAD = ∠ACB (Corresponding angles are equal)
So,
∠ACB = 28°∠ACB = ∠GCJ (Vertically opposite angles are equal)
So,
28° = x°
OR
x° = 28°[tex]\rule[225]{225}{2}[/tex]
Answer:
28 degrees
Step-by-step explanation:
If two lines cross each other, it makes 4 angles, and 2 angles from opposite sides have the same length. Since line KL and line IJ crossed, angle KAI and angle LAJ will have the same angle.
--> Angle LAJ is 62 degrees
If we look closely, there is a triangle ABC, and since the question said that line KL and line FG is perpendicular, the angle ALG will be 90 degrees.
We know that in a triangle, there are three angles, and the angle measures combined equals 180.
Since we know two angles: 90 and 62, we take them away from 180 to find the last angle BCA.
--> 180 - 90 - 62 = 28
--> Angle BCA = 28 degrees
Like I said at the beginning, if two lines cross each other, opposite angles are the same size. So angle x will also be equal to angle BCA, which is 28 degrees.
Angle x = 28 degrees
PLEASE HELP: What is the sales tax for each item?
Textbook: $20.00
Sales tax: 4%
Answer:
0.8
Step-by-step explanation:
The tax is calculated as the total price of the object multiplied by the amount of sales tax.
Hi! I’ll give brainliest to best answer!
Thanks so much in advance!
Help me please and thank you !
Answer:
Step-by-step explanation:
(A)length of a stamp=1/5foot
wide of a stamp=1/4foot
area of the stamp=?
area of the stamp=length of a stamp *wide of a stamp
=1/5*1/4
=1/20square foot
(B)an area of the room=1/4 square meter
width of the room=1/5meter
length of the room=?
an area of the room=width of the room*length of the room
1/4 =1/5 * length of the room
1/4 = length of the room/5
5/4 =length of the room
length of the room =5/4=1 1/4(C)the area of the canvas=1/5square yard
width of the canvas=1/4 yard
length of the canvas=?
an area of the canvas=width of the canvas*length of the canvas
1/5 = width of the canvas*1/4
1/5 = width of the canvas/4
4/5 =width of the canvas
width of the canvas= 4/5
(D)length of the rectangular course=1/5mile
area of the rectangular course=1/4square mile
width of the rectangular course=?
an area of the rectangular course
=
width of the rectangular course*length of the rectangular course
1/4 =width of the rectangular course*1/5
1/4 =width of the rectangular course/5
5/4 =width of the rectangular course
width of the rectangular course=5/4
Q.3 - The table and the graph each show a different relationship between the same two variables, x and y:
How much more would the value of y be in the table than its value on the graph when x = 11?
Because y=20x in this table, the value of y is worth 20 times as much as the value of 11.
How can I tell which graph represents the function's graph?A feature's graph In a plane of the form (x, f(x)), all factors have the form f. As a side note, the graph of f may also be thought of as the graph of y = f. (x). Because of this, a feature's graph is a particular case in the graph of an equation.
When it comes to graphing, what exactly is the axis?To explain the graph's meaning and the measuring devices, an axis is a line drawn to the graph's aspect or backside. It is possible to provide information about what the graph shows by labeling the x-axis, the horizontal line at its lowest point.
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hello can someone help me with this
Answer:
I am going to answer the ones you haven't answered yet...
Bullet point 2: The Y-intercept is where the graph crosses the y-axis in this case that would be y=0 or (0,0)
Bullet Point 5: the question basically says that for the values of x when they are between 0 and 6 the y values are ___. the answer for this one would be y ≥ 0.
A local gym sells monthly memberships. The function f(x) = −x2 + 18x − 72 models the daily profit in dollars, where x is the number of memberships sold.
Determine the zeros, and explain what these values mean in the context of the problem.
x = 9, x = 18; The zeros represent the number of monthly memberships that produces a maximum profit.
x = 9, x = 18; The zeros represent the number of monthly memberships when no profit is made.
x = 6, x = 12; The zeros represent the number of monthly memberships that produces a maximum profit.
x = 6, x = 12; The zeros represent the number of monthly memberships when no profit is made.
Answer: the zeros are at (6,0) and (12,0) where no profit is made.
option D
Step-by-step explanation: you can find the zeros ( the x-intercepts), by either graphing out the function or factoring it.
in this scenario, there is no y increase, which means 0 profit.
HELP ME ASAP!!!!!!!!!!!!!!!!
Answer:
Step-by-step explanation:
5x+ACB=180
A=33
2x+33 +ACB=180
This means 2x+33=5x
3x=33
x=11
In a regular 52 deck of cards, what is the probability of picking a random spade, a 4 of any suit and then a random diamond with replacement?
[tex]sample \: space = 52 \: cards \\ spades = 13 \: cards \\ number \: 4s = 4 \: cards \\ diamonds = 13 \: cards \\ note \: that = \\ there \: is \: replacement \\ order \: does \: matter[/tex]
[tex]P( \gamma ) = \frac{13}{52} \times \frac{4}{52} \times \frac{13}{52} = \frac{1}{208} [/tex]
PLEASE HELPPPPPP!!!!!!!!
Jane read 1/4 of a 400-page book. How many pages are left to read?
Answer: 300 pages are left to read.
Step-by-step explanation: There are 300 pages left to read, as 1/4 of 400 is 100. So far, Jane has read 100 pages.
I hope this helps!!
Answer: 300 pages
Step-by-step explanation: 1/4 of 400 is 100. 400-100=300. Thus, we arrive at our answer.
PLEASE HELP ME ASAP!!!!!!
Answer:
Triangles are congruent due to SAS
Angles are congruent due to CPCTC
Step-by-step explanation:
In order to prove the congruency of the angles, we have to prove the congruency of the triangles.
ME=MR is given so that is a side
They share angle M so that is an angle
And, MA=MN which is given so that is a side.
The two triangles are congruent due to SAS postulate
So the angles are equal due to CPCTC
Angles E and R are congruent as they are the corresponding parts of two congruent triangle.
Given is a figure which shows two connected triangles ΔEMA and ΔRMN,
We need to prove ∠E ≅ ∠R.
Considering the triangles,
ME = MR [given]
MA = MN [given]
∠M is common angle in both triangles,
So, ΔEMA ≅ ΔRMN by SAS postulate.
So, ∠E ≅ ∠R by CPCTC.
Hence proved.
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PLEASE: Find The Ending Balence
1. $939 at 8% for 6 years
2. $823 at 3% for 9 years
3. $269 at 1# for 3 years
Answer:
$450.72$222.21$8.07Step-by-step explanation:
Heather is planning a dessert display. She needs 4 ounces of strawberries for each dessert.
Part A: Heather is not sure how many desserts she will make. Write an expression with a variable that represents the amount of strawberries Heather needs for the desserts. Identify what the variable represents.
biscuits sweet strawberry
Rolled oats is packaged in a right circular cylindrical container that has a radius of 6 centimeters and a height of 12 centimeters.
What is the surface area of this container in terms of pi?
Maybe that I'm wrong, Only one way to find out.
There were 35 students in a school. 20 of the students passed a test. The rest were shared equally among 3 teachers for extra classes. How many students did each teacher receive?
Answer:
5 students
Step-by-step explanation:
35-20=15
15/3=5
Answer:
35 kids 20 students pass the test 35 -20 = 15 divided by 3 =5 students per teacher.
Step-by-step explanation: hope this helps can I be brainlyest. This is a bunny /\__/\
| * . * |
Which of the following is a random sample of the population of people who subscribe to a particular magazine?
A) the first 20 names on the list of subscribers
B)the first name on the list of subscribers and every 10th person's name after that.
C) the list of subscribers separated into two groups, males and females, and the first 10 names from each group.
D) the 20th name on the list of subscribers and every 10th name after that
Answer:
B is the answer of that question
I HOPE IT HELP YOU
Evaluate the given algebraic expressions replacing x with -2 and y with 1
[tex]3x^{2}[/tex]
Answer: -6
Step-by-step explanation: -2^1 = -2
3 x -2 = -6
100 POINTS+BRAINLIEST 8TH GRADE MATH PT 6: SIMPLIFY THE GIVEN EXPRESSION -I know how to do the distributive property but i don't know the rules to remember when dealing with rearranging subtraction sings like the one in the first set of parenthesis. please tell me how to accurately simplify an expression with those subtraction signs
thanks so much!!
Answer:
[tex]-x + 9[/tex]
Step-by-step explanation:
Hello!
We want to combine any like terms and distribute the signs properly to the terms in the parentheses.
First, remove the parentheses by distributing the signs:
[tex]-(2x - 1) + 3(x + 4) - 2(x + 2)[/tex][tex]-(2x) - (-1) + 3(x) + 3(4) - 2(x) - 2(2)[/tex]The simplified form is [tex]-x + 9[/tex].
Another way to think about the negative sign is by replacing it with -1, so essentially you are multiplying the whole parentheses by -1.
Option D
Karl has 5 blue pencils, 3 yellow pencils and 2 black pencils. If Karl selects 2 pencils at random from his pencil case, without replacement, what is the probability that both pencils are not yellow?
Q.2 - The graph shows the number of paintballs a machine launches, y, in x seconds:
Which expression can be used to calculate the rate per second at which the machine launches the balls?
Answer:
c
Step-by-step explanation:
John drew a trapezoid ABCD on a coordinate plane. The coordinates are as follows
A(8,4)
B(10,4)
C(13,-1)
D(8,-1)
What is the length of the side AD?
Answer: 5
Step-by-step explanation:
If the sides of A is (8,4) and the coordinates of D is (8-1), the same value in both coordinates are 8 and the different values are 4 (A) and -1 (D). We will take the absolute values (AV) of both when added: |4 + -1|.
The answer will be 5 grids (or whatever measurements the question uses).