Answer:
f(2) = 30
Step-by-step explanation:
f(x) = 2x² − 3x + 28
f(2) = 2(2)² - 3(2) + 28
f(2) = 2(4) - 6 + 28
f(2) = 8 - 6 + 28
f(2) = 30
Edge: Which equation has a focus at (–6, 12) and directrix of x = –12?
The solution is, b. x² = 12(y + 3) equation represents a parabola that has a focus of (0, 0) and a directrix of y = −6
What is parabola?The parabola is a plane curve which is mirror symmetrical and is approximately U-shaped. It fits several superficial different mathematical descriptions.
here, we have,
If the focus is (0,0) and the directrix is y=-6, the equation will be found as follows:
Let (x,y) be any point on the parabola. Find the distance between (x,y) and the directrix, then find the distance between (x,y) and the focus. Equate these two distance equations and the simplified equation in x and y is equation of the parabola.
The distance between (x,y) and (0,0) is √(x²+y²)
The distance between (x,y) and the directrix, y=-6 is ly+6l
Equate the two distance expressions and square on both sides
√(x²+y²)=ly+6l
x²+y²=(y+6)²
simplifying and bringing terms together we get:
x²-12y-36=0
make x² the subject:
x²=12y+36
x²=12(y+3)
Hence, Answer :b. x² = 12(y + 3)
learn more on parabola:
https://brainly.com/question/1615961
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complete question:
Which equation represents a parabola that has a focus of (0, 0) and a directrix of y = −6 ?
a. x² = 12y
b. x² = 12(y + 3)
c. x² = −3y
d. x² = −3(y + 3)
Answer:
C
Step-by-step explanation:
help pls. Question 4(Multiple Choice Worth 1 points)
(01.05 MC)
Which shows the expressions in the order they would appear on a number line from least to greatest?
Answer:
Second choose
Step-by-step explanation:
We know that 4^3 is the greatest
And 14/9 is the least
Point A lies on the circle and has an x-coordinate of 1.
Which is the correct calculation of the y-coordinate of
point A?
Answer:
D
Step-by-step explanation:
edg
Answer:
D
Step-by-step explanation:
2 feet to 43 inches type the ratio as a simplified fraction help with question plzz
Answer:
24/43
Step-by-step explanation:
2 feet = 24 inches
The answer is 24/43 or 24:43. I can't be simplified.
I need some help please?
Answer:
38°
Step-by-step explanation:
hope this helps :)
PLS HELP I'LL MARK BRAINLEST
Answer:
each angle measure 60 is answer
Mercury is the closest planet to the sun at a distance of 36 million miles. The closest star to the sun is Proxima Centauri, which is 4.24 light years away. A light year is 5.9 x 10 to the 12th power. How many miles from the sun is Proxima Centauri?
Answer:
2.36 * 10^13 miles
Step-by-step explanation:
Given that :
Proxima centauri is at a distance of 4.24 light years away from the sun.
Distance in miles of Proxima centauri from the sun ;
1 light year = 5.9 * 10^12 miles
Number of light years from the sun * 5.9 * 10^12
= 4 * (5.9 * 10^12)
= 23.6 * 10^12 miles
= 2.36 * 10^13 miles
I WILL GIVE YOU BRAINLYEST!! PLSS HELP ME ASAP!!
write about how you
would find the Lateral Surface
Area vs the Total Surface Area
of the Rectangular Prism shown.
*DO NOT SOLVE*
What is the value of the expression below when Z =7
3z- 3
Answer and explanation
as z= 7
3z -3
3(7) -3 =21-3 =18
42 is 28% of what
whover gets right can get branliest
What is the percentage of sugar in the syrup made of 10 kg of water and 2 kg of sugar. Thx yall :D
The price of a washing machine was decreased by 20% to £640.
What was the price before the decrease?
Answer:
£800
Step-by-step explanation:
Use the percentage formula: NV = m x OV
NV is New Value;
m is Multiplier;
and OV is Old Value.
£640 in the New value, so now we have to convert 20% to a multiplier and find out the Old value.
Make OV the subject of the formula: OV = NV / m
So 20% decrease would mean: 100 - 20 = 80 * 100 = 0.80
Divide 640 (NV) by 0.80 (m) and it will give you:
£800
And it would make sense that the OV is higher, and it matches the statement -> as the NV is the decrease.
Whích system of equations shows a solution of (0.5, -1)?
Answer:
D i think
Step-by-step explanation:
What is the midpoint of the line segment With end points 0,4 and -4,-6?
Answer:
(-2,-1)
Step-by-step explanation:
PLS HELP I'LL MARK BRAINLEST
Answer: B.x = 52
we have;
2x + 76 = 180
⇔ 2x = 104
⇔ x = 52
Step-by-step explanation:
Answer:
I think C but im not 100% sure so don't take my word
help me!
Define the opposite and the absolute value of -15.
The opposite of -15 is -15. The absolute value of -15 is -15.
The opposite of -15 is -15. The absolute value of -15 is 15.
The opposite of -15 is 15. The absolute value of -15 is 15.
The opposite of -15 is 15. The absolute value of -15 is -15.
Answer:
The opposite of -15 is 15. The absolute value of -15 is 15.
Ansbsbxuhsbxbwaszbwihxbiybxcscbyqsbciasbhicbxshbabxh
Step-by-step explanation:
If x+6>2x+4, which of the following is NOT a possible value for x?
245
Step-by-step explanation:
b
Answer:56
Step-by-step explanation:
plz help ignore the 14 though
Answer:
x=66
Step-by-step explanation:
Answer:
sorry i don't know
Step-by-step explanation:
Almost done~!
❤️❤️❤️❤️❤️❤️❤️❤️✨✨✨✨✨✨✨✨✨✨
Answer:
<
Step-by-step explanation:
Hope this helps!
Can someone help me please
Answer:
c
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
All they do is swap the order of what is in the parentheses which means the result will stay the same, on all the other ones they changed which numbers were in the parentheses which means the result would of been different!
I hope this helps, and have a great day!
Find the value of x, y, and z
Answer:
Step-by-step explanation:
x + 28 + 39 = 180
x + 67 = 180
x = 113
y + 113= 180
y = 67
z + 67 + 64 = 180
z + 131 = 180
z = 49
Maria wants to know if the number of words on a page in her earth science book is generally more than the number of words on a page in her math book. She takes a random sample of 25 pages in each book, then calculates the mean, median, and mean absolute deviation for the 25 samples of each book.
Mean Median Mean Absolute Deviation
Earth science 48.9 41 9.2
Math 34.5 44 1.9
She claims that because the mean number of words on each page in the earth science book is greater than the mean number of words on each page in the math book, the earth science book has more words per page. Based on the data, is this a valid inference?
Answer:
No, because there is a lot of variability in the earth science book data.
Step-by-step explanation:
I just took the test and the explanation is that the earth book has more pages and more variability so that is why her answer is wrong.
Answer:
No, because there is a lot of variability in the earth science book data.
Step-by-step explanation:
You pick a card at random. Without putting the first card back, you pick a second card at random.
What is the probability of picking a 5 and then picking an even number?
Answer:
1/10 or 10%Step-by-step explanation:
Probability = favorable outcome / total number of outcomes
p(5) = 1/65 numbers left and 3 of them are even.
p(even) = 3/5So combined probability is:
p(5 and even) = 1/6*3/5 = 1/10What is the simplified value of the expression below? 1/3 ÷ 2/3 simplified
Answer: 1/2
Step-by-step explanation:
Glad I could Help Its 1/2
Answer:
1/2
Step-by-step explanation:
Keep change flip!
1/3 / 2/3
1/3 x 2/3
1/3 x 3/2
Which equals...
3/6
Which also equals...
1/2!
Hope this helped!
<
3/12 -
>
33. Find the mzi if m25 = 134º. (TEKS 8.8D-S)
A 46°
B
440
K
C 470
D
178°
1
5
4
8.3 Pts
M
A
B
С
D
E
Answer:
8
Step-by-step explanation:
mom
15 x -3=?
5
45
-45
-5
Answer:
- 45
hope it's helpful ❤❤❤❤
THANK YOU.
Which fraction is closest to the benchmark 1?
A. 1/5
B. 1/3
C. 4/9
D. 8/9
Answer: D
Step-by-step explanation:
The larger the denominator gets, the smaller the parts are split, therefore 8/9 is the closest to 1
Pls help
I can’t fail
Shhsvshdbdhhr
Please
Can someone please help me it's due by tomorrow.
Answer:
Yea I can help you
was there supposed to be a picture included.
Step-by-step explanation:
What is the area of the triangle shown below?
|
1
10
Answer:
[tex] \frac{1}{2} \times 10 \times 8 \\ \\ = 40[/tex]
this is the explanation.