Answer:
39.6
Step-by-step explanation:
RE-POST --> BRAINLIEST, THANKS, 5-STAR RATING IF YOU ANSWER! PLEASE HURRY!
Nini's (me) grade average in Science is a 96.7%. She has a project that is due that is worth 10% of her grade. If she gets a 0% on the project, what is her new grade average?
This actually very important that I know immediately, so please answer soon!
Answer:
93.76%
Step-by-step explanation:
93.76% should be your new grade
I'm not 100% sure but what I did is that I divided each percent you have by it's worth. So for example, 96% x 20% = 0.192
I did this with all the possible percents and then I made them into whole number. So the 0.192 became 192. Here I divided it by 5. I should've divided by 4 but since the project is a 0% I didn't have to add it, just use it to divide.
So here I had 117.2 then I multiplied it by 80% because that's the total percent all those grades equaled and got 93.76%
What method can we use to rewrite Quadratic Equation in standard form to a Quadratic Formula? Go ahead and rewrite ax^2 + bx+c = 0 to quadratic formula. (please help. this is urgent.)
Answer:
SOLUTION: Rewrite the quadratic equation in standard form by completing the square. f(x)=x^2+8x+14 Answer (f(x)= (x, plus or minus ___)^2 plus or minus ____ I have worked this to x, 4 a Algebra -> Quadratic Equations and Parabolas -> SOLUTION: Rewrite the quadratic equation in standard form by completing the square.
Step-by-step explanation:
What is the average rate of change for f(x) = -3* + 1 over the interval -2 < x <-1?
A. -1/9. B. -2/9. c. 1/9. d. 2/9
Answer:
B
Step-by-step explanation:
You can check it before choosing the answer.
I think 85% correct.
Which two-dimensional figure results from slicing the sphere with the blue plane?
A square
A circle
A line
A cone
A parabola
Nicole sells T-shirts, t, for $8, and sells sweatshirts, s, for $18. She earns $475
in revenue. Which equation below represents this relationship?
Answer:
Step-by-step explanation:
Cost of t, T-shirts = t*8 = 8t
Cost of s, sweatshirts = s*18 = 18s
Equation:
8t + 18s = 475
Solve the system of equations by substitution.
x+y=18
y=8x
Answer:
x=2, y=16
Step-by-step explanation:
x+y=18
y=8x
x+8x=18
x=2
y=16
Answer:
2
Step-by-step explanation:
x + y = 18
y = 8x
x + 8x = 18
9x = 18
x = 18÷9
x = 2
Evaluate each expression if a=4, b=6 and c=3
7c+8a-5b
Answer: 38
Step-by-step explanation:
To solve this problem, you are simply going to plug in the values for the numbers into the equation so it would look like this:
7(3)+8(4)-5(6)
Answer:
23
Step-by-step explanation:
7(3)+8(4)-5(6)
21+32-30
53-30
23
uuuuLITUNCION
Given the function f(x) = -2x2 + 3 over the closed
interval [-1, 2], what are the extreme values?
Minimum:
Maximum:
Answer:
Step-by-step explanation:
hello :
f(x) = -2x²+3
in : [-1, 2] f'(x) = - 4x
f'(x) = 0 means : -4x=0 so : x=0
f(0) = -2(0)²+3 = 3 (Maximum:) because : a= -2 and a<0
in : [-1, 0] f is crasing
in : [-1, 2] f is decrasing
Answer:
1.-5
2.3
Step-by-step explanation:
just did it
Using the rule of 72, how long will it take for the principal to double with an annual compound interest rate of 6%?
A. 6
B. 9
C. 12
D. 15
Answer:
C. 12
Step-by-step explanation:
With the rule of 72, you would divide 72 by the periodic interest rate to get the number of years for the principal to double
72 ÷ 6 = 12
Find the common difference Ce:-34,-29,-24,-19,...
Answer:
d = 5
Step-by-step explanation:
The common difference d is the difference between consecutive terms in the sequence
- 29 - (- 34) = - 29 + 34 = 5
- 24 - (- 29) = - 24 + 29 = 5
- 19 - (- 24) = - 19 + 24 = 4
Thus the common difference is d = 5
The common difference between consecutive terms in the given sequence is 5.
Explanation:The given sequence is {-34, -29, -24, -19, ...}
To find the common difference, we need to look for a pattern between consecutive terms. So, let's observe the differences between consecutive terms:
-29 - (-34) = 5
-24 - (-29) = 5
-19 - (-24) = 5
As we can see, the common difference between consecutive terms is 5.
If ↔w||↔v, find the measurement of angle b.
∠b =
Answer:
∠ b = 132°
Step-by-step explanation:
Since v and w are parallel.
The angle vertically opposite 48° is congruent , thus = 48°
b and 48° are same- side interior angles and supplementary, thus
b = 180° - 48° = 132°
Plot V2 and V3 on the number line.
Which statements are true? Check all that apply.
O v2 <2
O v2 < V3
o 12 > 1.5
o 13 <3
o v is about 0.5 less than 13.
O v3 is about 0.3 greater than v2.
Answer:
Step-by-step explanation:
0.........................1.......V2..1.5..V3.....2........................3....................
V2 <2
V2<V3
12>1.5
V3 is about 0.3 greater than V2 (V3 =1,7...and V2=1,4...)
V? is about 0.5 less than 13 ( it is not complete)
Answer:A, B, D and F
Your welcome
Step-by-step explanation:
I just took it
The measure of central angle RST is pi radians. What is the area of the shaded sector? 4pi units^2 8pi units^2 16pi units^2 20pi units^2
Answer:
8π units²
Step-by-step explanation:
Area of the circle can be defined as pi 'π' times the radius squared 'r²'
A= πr²
radius given is 4 (see attachment for the figure)
r=4
A = π4²
A= 16π
Now, if you look at the figure, you can see that the shaded area of the circle is 'half' of the whole circle.
We will half the Area which we have found it above in order to determine the area of shaded sector
Therefore,
area of the shaded sector = 16π/2 => 8π units²
Answer:
8[tex]\pi[/tex] [tex]units^{2}[/tex]
Step-by-step explanation:
did it on edge
Does the following list represent a complete probability model? Explain.
P(red) = 16 , P(yellow) = 13 , P(blue) = 112 , and P(green) = 12
Answer:
No
Step-by-step explanation:
No, the given list does not represent a complete probability model because the sum of the probabilities is not equal to 1.
The sum of probabilities should always equal to 1 in a complete probability model. In this case, the sum of probabilities is 16 + 13 + 112 + 12 = 153, which is not equal to 1. Therefore, it is not a complete probability model.
Final answer:
The provided list does not form a complete probability model because the probabilities do not sum up to 1, and some values exceed 1, which is not possible for probabilities.
Explanation:
The list provided does not represent a complete probability model because the probabilities of all possible outcomes of a probability model must sum up to 1. However, the sum of the probabilities listed (P(red) = 16, P(yellow) = 13, P(blue) = 1/12, and P(green) = 1/2) does not equal 1. The values for P(red) and P(yellow) seem to be mistakes or typos, as probabilities cannot be greater than 1. If these values were supposed to represent fractions and perhaps there are typos, they may need correcting to ensure the probabilities would sum up to 1. An example of a complete probability model can be seen in the jelly bean question mentioned, where the probabilities of selecting each color are fractions that sum up to 1.
Find the sum and product of the roots.
3x^2 - 4x-7 = 0
x1,x2(-1, 7/3)
to slove this you need the formula
from equation a=3 b=-4 c=7;
x=(-b±√b²-4ac)/2a
x=(4±√-4²-4×3×7)/2×3
x=(4±√100)/6
x=(4±10)/6
x1=4-10/6 x2=4+10/6
x1=-6/6 x2=14/6
x1=-1 x2=7/3
The sum of roots is 4/3, and the product of roots is -7/3 for the quadratic equation [tex]3x^2[/tex] - 4x - 7 = 0.
To find the sum and product of the roots of the quadratic equation [tex]\(3x^2 - 4x - 7 = 0\)[/tex], we can use Vieta's formulas.
Vieta's formulas state that for a quadratic equation of the form [tex]\(ax^2 + bx + c = 0\),[/tex] the sum of the roots [tex](\(r_1\) and \(r_2\))[/tex] is given by [tex]\(-\frac{b}{a}\),[/tex] and the product of the roots is given by [tex]\(\frac{c}{a}\).[/tex]
In your equation, [tex]\(a = 3\), \(b = -4\), and \(c = -7\).[/tex]
So, the sum of the roots [tex](\(r_1\) and \(r_2\)) is:[/tex]
[tex]\[r_1 + r_2 = -\frac{b}{a} = -\frac{-4}{3} = \frac{4}{3}\][/tex]
And the product of the roots [tex](\(r_1\) and \(r_2\)) is:[/tex]
[tex]\[r_1 \cdot r_2 = \frac{c}{a} = \frac{-7}{3}\][/tex]
So, the sum of the roots is [tex]\(\frac{4}{3}\)[/tex], and the product of the roots is [tex]\(\frac{-7}{3}\).[/tex]
the midpoint of AB is M (6,3). If the coordinates of A are (7,4) what are the coordinates of B
Answer:
B(5,2)
Step-by-step explanation:
Solve -4x ≥ -8. Graph the solution.
Answer: x is less then or equal to 2
Step-by-step explanation:
divide -4x and -8 both by -4 to get x is greater then or equal to 2 and flip the sign to less then or equal then because your dividing by a negative number
Which of the following is a prime number? 99, 53, 117, 121
Answer:
53
Step-by-step explanation:
99 can be divisible by 9, 11, 3, and 33. 117 can be divisible by 11 (11x11)
and 117 can be divisible by 1, 3, 9, 13, and 39.
110/12 = 55/z
a.6
b.8
c.10
d.400
Answer:
a. 6
Step-by-step explanation:
110/12 = 55/z
z = 55 × 12/110
z = 6
The ratio of dogs to cats at the local pet store is 5:3
If there is 12 cats at the pet store, how many dogs
are at the pet store?
Answer:
20 dogs
Step-by-step explanation:
Answer:
20 Dogs.
Step-by-step explanation:
5:3=x:12
12/3=4
5x4=20
A jar contains 2 caramels, 7 mints and 16
dark chocolates. What is the probability of
choosing a dark chocolate, eating it, then
choosing a caramel?
Answer:
Answer A: 16/25
Answer B: 2/24
Step-by-step explanation:
There are 16 dark chocolates, so the probability of choosing one is 16/25. the total number of candies is 25, so when one is eaten, the number changes to 24. There are 2 caramels, so the number is 2/24.
use the pythagorean theorem to prove whether or not each set of numbers represent the side length of a right triangle in your final answer, include your proof A. 6,12,15 B. 5,,12, and 13
Answer:
a. no, it is not a right triangle
b. yes, it is a right triangle
Step-by-step explanation:
A square's diagonal (hypotenuse) is 28V2. What is the length of each side?
In a square, all four sides are the same length. Imagine a square that has been cut by a diagonal. We have two triangles, each with the same length hypotenuse (diagonal length) and two equal side lengths. To find the length of each side, we can use the Pythagorean theorem.
I used x in place of a and b, as both side lengths are equal.
x^2 + x^2 = (28 [tex]\sqrt{2}[/tex])^2
2x^2 = 1568
x^2 = 784
x = 28
The length of each side is 28 units.
Hope this helps!! :)
Answer:
Once it is a square, the lengths are the same. Considering that
a square's diagonal is [tex]s\sqrt{2}[/tex], thus, each length measures 28.
You may use the pythagorean theorem:
[tex](28\sqrt{2} )^2=s^2+s^2\\28\sqrt{2} =\sqrt{s^2+s^2} \\28\sqrt{2} =s\sqrt{2} \\[/tex]
Will mark brainlist
Given. QR I PT and
Prove: APQR – ATSR
Angles
Segments
Triangles Statements Reasons
ZQPR
ZQRP
The mathematics question involves proving two triangles congruent in geometry, likely using congruence criteria such as SSS, SAS, or ASA, with the given information that line QR is parallel to PT.
Explanation:The subject of this question is Mathematics, specifically it involves geometry and the proof of congruent triangles. The statement 'QR I PT' suggests that line QR is parallel to line PT. To prove triangles APQR and ATSR are congruent, one would need to demonstrate that they satisfy the criteria for congruence such as side-side-side (SSS), side-angle-side (SAS), or angle-side-angle (ASA). The angles mentioned, such as ∠QPR and ∠QRP, are likely parts of the required congruence criteria. However, additional information and a specific criteria of congruence need to be applied in a step-by-step explanation.
mathhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
Answer:
21
Step-by-step explanation:
2³ = 8
8/2
= 4
3.4(5)
= 17
4 + 17
= 21
Answer:
Your answer is going to be: 21.
Step-by-step explanation:
In this problem, we're going to be using PEMDAS.
[tex]\frac{1}{2} x^{3} +3.4y[/tex]
Now, we have to fill the blanks:
[tex]\frac{1}{2} 2^{3} +3.45[/tex] [tex](5)\\[/tex]
There's no parenthesis (3.45(5) is just another way of multiplying so that doesn't count). So, we move to the exponent part.
[tex]\frac{1}{2} 8+3.4(5)[/tex]
Everything else is just multiplication.
[tex]\frac{8}{2} + 17[/tex] = 4+ 17
Add it all together and your answer is going to be:
21.
P.S. Good luck with the rest of your assignment!!
What is the 30th term of the linear sequence below?
−
5
,
−
7
,
−
9
,
−
11
,
−
13
,
.
.
.
Answer:
63
Step-by-step explanation:
5,7,9,11,13
common factor= adding by 2
2n+3
find the 30th term
2×30+3=63
answer= 63
The 30th term of the linear sequence −5, −7, −9, −11, −13, . . . is -63. This is found using the formula for the nth term of a linear sequence, which is expressed as nth term = first term + (n - 1)*common difference.
Explanation:The 30th term of a linear sequence can be found using the formula: nth term = first term + (n - 1)*common difference. In this sequence, the first term is -5 and the common difference (distance between each term) is -2 (since -7 minus -5 equals -2).
By substituting the appropriate values into the formula, we get: 30th term = -5 + (30 - 1)*(-2) = -5 - 58 = -63. Therefore, the 30th term of the sequence is -63.
Learn more about Linear Sequence here:https://brainly.com/question/30379010
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25 % of __is 30
I forgot who do slove this bc of quartine :
Answer:
120
Step-by-step explanation:
its easy 25 might as well be 1/4 so 30+30+30+30=120
is x greater than, less than, or equal to 50*
Answer:
c
Step-by-step explanation:
because they are opposites
The mean of 44, 47, y, 58 and 55 is 52. Find the value of y
Answer:
[tex] y= 56[/tex]
Step-by-step explanation:
[tex] \frac{44 + 47 + y + 58 + 55}{5} = 52[/tex]
[tex] \frac{204 + y}{5} = 52[/tex]
[tex]204 + y = 260[/tex]
[tex]y = 56[/tex]
The value of y is 56.
What is arithmetic mean?Arithmetic mean is often referred to as the mean or arithmetic average. It is calculated by adding all the numbers in a given data set and then dividing it by the total number of items within that set. Mean is the most commonly used measure of central tendency. It represents the average of the given collection of data.
Given here, the observations are 44,47,y,58,55 and the given mean is 52
then we can construct the equation:
44+47+y+58+55 /5 = 52
(y + 204) / 5 = 52
y + 204 =260
y = 56
Hence, The value of y is 56
Learn more about the arithmetic mean here:
https://brainly.com/question/15323584
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convert the following decimal into a percentage 0.4973