Answer:
The scale factor for area is found by squaring the scale factor for length. Thus the scale factor for area is s2. If this is reversed, a method is provided for solving the problem being investigated. The scale factor for area is 2.
Step-by-step explanation:
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
It is 10:30pm and my brain is not cooperating with me.
Answer:
[tex]v = 180 {cm}^{3} [/tex]
Step-by-step explanation:
V= lwh or l *w*h
Length: 15
Width: 3
Height:4
V=15*3*4
V=180
Step-by-step explanation:
so, you can't do any basic calculations anymore ? turned into a true couch potato/vegetable ?
the volume of a block is
length × width × height.
similar to the 2 dimensional problem of the area of a rectangle : length × width.
now we have one more dimension. that's all.
V = 15 × 4 × 3 = 180 cm³
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
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
What is the relationship between x and y?
Oy and x stay constant
Oy increases as x increases
Oy decreases as x increases
Oy stays constant as x increases
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).
Find the quotient. 5 1/4 - 15
a. 7/20
b. 78 3/4
c. 2 6/7
d. 3 1/4
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
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:
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
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
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.
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
PLEASE HELP QUICK!
A pencil cup is shaped like a right rectangular prism. It has a base area of 9 square inches and a height of 312 inches.
What is the volume of the pencil cup?
1212 in³
1534 in³
2114 in³
3112 in³
Answer:
i got 2808 in3 which wasn't on the list and i was extremely confused, i redid the problem multiple times and got the same answer, i used a calculator AND searched of the web, it still gave me the same answer, if those are the only options something might be wrong, the answer should be 2808 in3.
Plotting Equivalent Ratios
Mr. Hendricks is plotting equivalent ratios on a coordinate plane. One of the ordered pairs is (3, 5). Which other ordered pair could he plot?
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.
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.
How do you figure out if a shape is similar or not using rectangle diagnols?
Answer:
How do you figure out if a shape is similar or not using rectangle diagnols?
Assuming that diagnols = diagonal, it is not possible to define a similarity relationship without measuring at least one side.
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 /\__/\
| * . * |
Evelyn bought needles, balls of yarn, stitch holders, and patterns for her knitting kit. she bought 3 times as any stitch holders as patterns. 7 less needles than stitch holder, and 2 balls of yarn. She paid $5.25 for each pattern, $0.50 for each stitch holder, $3.25 for each needle, and $7.50 for each ball of yarn. How many of each did Evelyn purchase if she paid $58.25
Answer:
answer is going to be
4 patterns
5 needles
2 balls of yarn
and 12 stitch holders
hope this helped u bro
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.
To learn more about graphs visit
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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.
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.
Learn more about congruent triangle click;
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HELP PLEASE!!!!!!!!!!!!!!!!!!!! I NEED IT ASAP!!!!!!!!!
Hi! I’ll give brainliest to best answer!
Thanks so much in advance!
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
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]
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.
Copy the problems onto your paper, mark the givens and prove the statements asked.
CN=WN, ∠C≅∠W
Prove RN=ON
The statements and reasons for the proof are:
CN ≅ WN [given]∠C ≅ ∠W [given]m∠CNR ≅ ∠WNO [vertical angles theorem]ΔCNR ≅ ΔWNO [ASA theorem]RN = ON [CPCTC]What is the CPCTC and ASA Congruence Theorem?When two triangles have two corresponding congruent angles and one corresponding included sides that are congruent, both triangles are congruent by ASA. By implication, the CPCTC states that since they are congruent triangles, all its corresponding parts are congruent to each other.
The statement for the proof along with the reasons in bracket are:
CN ≅ WN [given]∠C ≅ ∠W [given]m∠CNR ≅ ∠WNO [vertical angles theorem]ΔCNR ≅ ΔWNO [ASA theorem]RN = ON [CPCTC]Learn more about the CPCTC theorem on:
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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?