Answer:
Step-by-step explanation:
1) $399 = 84% of the original amount
Divide both sides by 84 to get what one percent would be
$4.75 = 1%
Then multiply both sides to get one hundred percent [the original price]
$475 =100%
Use this method to do the second question
$450.50 = 85%
Divide by 85
$5.30 = 1%
Multiply by 100
$530 = original price
Ava is in a hot air balloon that has just taken off and is floating above its launching point. Mary is standing on the ground 4 meter away from the launching point. If ava and mary are 5 meters apart, how high up is ava ?
Answer:
Ava's altitude is 3 meters.
Step-by-step explanation:
The position of Ava and Mary can be described by the sides of a right angled triangle. Let Ava's altitude be represented by x.
So that applying the Pythagoras theorem, we have;
[tex]/hyp/^{2}[/tex] = [tex]/Adj 1/^{2}[/tex] + [tex]/Adj 2/^{2}[/tex]
[tex]5^{2}[/tex] = [tex]4^{2}[/tex] + [tex]x^{2}[/tex]
25 = 16 + [tex]x^{2}[/tex]
[tex]x^{2}[/tex] = 25 - 16
= 9
x = [tex]\sqrt{9}[/tex]
= 3
x = 3 meters
Thus, Ava's altitude is 3 meters.
Find the value of x. Show your work on a piece of paper."
1)
3
12
х
20
What are the y-intercept and axis of symmetry of this quadratic function?
5
X
5
Select two answers: one for the y-intercept and one for the axis of symmetry.
PLS HELP WILL GET BRAINLIEST
Answer:
A and C
Step-by-step explanation:
Eight burgers and three orders of fries cost $79.49. Six orders of fries and twelve burgers cost $125.82.Find the price of one burger and one order of fries .
Answer:
Burgers - $8.29 and fries - $4.39Step-by-step explanation:
Let burgers - b, fries - f
8b + 3f = 79.4912b + 6f = 125.82Double the first equation and subtract the second equation:
16b + 6f - 12b - 6f = 2(79.49) - 125.824b = 33.16b = 33.16/4b = 8.29Find f:
8(8.29) + 3f = 79.493f = 79.49 - 66.323f = 13.17f = 13.17/3f = 4.39how many cups of flour would u need to bake 7 batches of cookies?
If 1/2 cup of flour makes a batch of cookies, to make 7 batches you would need 3 and a half cups of flour :D
find the length of side a
Answer:
a = 4
Step-by-step explanation:
a² = 5² - 3²
a² = 25 - 9 = 16
√16 = 4
a = 4
Answer:
a = 4
Step-by-step explanation:
Using Pythagoras' identity in the right triangle.
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is
a² + 3² = 5²
a² + 9 = 25 ( subtract 9 from both sides )
a² = 16 ( take the square root of both sides )
a = [tex]\sqrt{16}[/tex] = 4
HELP PLEASE!!
If Jocelyn missed the target 5 times in 40 shots, what is the probability that her next shot will miss?
Answer:
Not 100% sure but I think that would be 12.5% hit rate. Meaning it is a 87.5% chance that she misses her next shot if her accuracy continues.
Step-by-step explanation:
Answer:
5:40 I think????????
Step-by-step explanation:
x^2 - 36x -6 factorization
Answer:
cannot factor further
Step-by-step explanation:
step 1: search online for factoring calculator
step 2: pick a site to use
step 3: enter problem and hit enter
step 4: see full solutions.
sorry I couldn't help more
What is the Surface Area of the cone?
Answer:
716.48
Step-by-step explanation:
Use the cone area theorem
Find the measure of.. (image included)
I need help please! My teacher changed the due date to today and I don't understand it.
Answer:
B) 50
Step-by-step explanation:
<A = x + 53
x + 53 + x + 83 + 50 = 180
2x + 186 = 180
2x = -6
x = -3
<A = x + 53
-3 + 53
50
Factorise fully
81 + 9p
Answer:
9(p + 9)
Step-by-step explanation:
9p + 81
Lets take 9 common from the expression.
⇒ 9(p + 9)
Answer:
9(9+p)
Step-by-step explanation:
9(9+p) = 81 + p
f(x) = –x^2 – 4x
Find f(-1)
Answer:
3
Step-by-step explanation:
Evaluate F(x) = –x^2 – 4x by substituting -1 for x:
F(-1) = –(-1)^2 – 4(-1)
This becomes:
F(x) = –1 + 4 = 3
I need help with these questions plz help
Answer:
1.A=bh/2
2A=bh
2A/b=h
answer check
2.f(x)=21-6x f(5)=21-6(5)
g(x)=2x/5-11 f(5)=21-30
21-6x=2x/5-11 f(5)=-9
21=32x/5-11 g(5)=2(5)/5-11
(5)32=32x/5(5) g(5)= 10/5-11
160=32x g(5)=2-11
5=x g(5)=-9
3. f(7)=3(7)-7
f(7)= 21-7
f(7)= 14
Step-by-step explanation:
An advertising flyer shows address labels as 4.3 cm by 1.2 cm. The ratio of the flyer label to the actual label is 2:3. What are the dimensions of the actual address labels?
Answer:
6.45 cm by 1.8 cm
Step-by-step explanation:
Ratio of label to actual measurement ; 2 : 3
For a flyer label size of 4.3
Actual label size equals :
(Flyer ratio / total ratio) * total size = flyer size
2/5 * x = 4.3
2x / 5 = 4.3
2x = 21.5
x = 21.5 / 2
x = 10.75
Actual size =. 10.75 - 4.3 = 6.45 cm
2/5 * x = 1.2
2x / 5 = 1.2
2x = 6
x = 6 / 2
x = 3
Actual size = 3 - 1.2 = 1.8 cm
6.45 cm by 1.8 cm
What's the answer pleaseeeww
Answer:
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Step-by-step explanation:
Answer:
The initial number of bacteria is 250 and the colony is increasing in size.
Step-by-step explanation:
Xian plans to run 14 laps around a track, each lap is 400 yards which would make his run a total of 5600 yards. So far Xian has run 1,680 yards around the track. What percentage of the run has Xian completed?
Answer:
4.2 laps
Step-by-step explanation:
because 4 laps is 1600+ the 80 which is a 1/5 of 400 causing it to be .2
100x² + 180x + 81
Solve this PLZ
Answer:
[tex]\huge\boxed{\sf (10x+9)^2}[/tex]
Step-by-step explanation:
[tex]\sf 100x^2 + 180x+81\\\\= (10x)^2 + 2(10x)(9)+ (9)^2\\\\Using \ Formula \ a^2 +2ab+b^2 = (a+b)^2\\\\= (10x+9)^2\\\\\rule[225]{225}{2}[/tex]
Hope this helped!
~AH1807Answer:
[tex](10x + 9 {)}^{2} [/tex]
Step-by-step explanation:
1) Rewrite it in the form a² + 2ab + b², where a = 10x and b = 9.
[tex](10x) ^{2} + 2(10x)(9) + {9}^{2} [/tex]
2) Use square sum: ( a + b )² = a² + 2ab + b².
[tex](10x + 9 {)}^{2} [/tex]
Hence, the answer is (10x + 9)².
please help me im giving you a lot of points
Answer:
7w13 times4y2
Step-by-step explanation:
Determine the surface area from the folllowing nets. Type the answer in the space provided (no units needed). If the answer is correct a mystery picture will appear. (Zo om in for bigger picture of dimensions)
Answer:
1.) 138
2.) 55
Step-by-step explanation:
1.) 8 x 6 = 48 x 2 = 96
(middle) 8 x 3 = 24
(triangles) 6 x 3 = 18 divided by 2 = 9 x 2 = 18
96 + 24 + 18 = 138
2.) (middle) 5 x 5 = 25
(triangles) 5 x 3 = 15 divided by 2 = 7.5 x 4 = 30
30 + 25 = 55
Hope this helped!!
pls answer asap and pls no wrong answers ;-;
Answer:
y = 7
Step-by-step explanation:
on that equation there is the point (-5 , 7)
Plssss i need your helpppp huhuhu
Answer:
136 cm²
Steps:
LA = π × 8 × √(15²+8²)
LA = π × 8 × √(225+64)
LA = π × 8 × √(289)
LA = π × 8 × 17
LA = π × 136 cm²
A map of a highway has a scale of 2 inches=45 miles. The length of the highway on the map is 9 inches. There are 7 rest stops equally spaced on the highway, including one at each end. You are making a new map with a scale of 1 inch=30 miles. How far apart are the rest stops on the new map?
Answer:
25.7 miles apart
Step-by-step explanation:
this may not be right, if its not im sory
PLEASE HELP URGENT!!!!!!
Answer:
a, b & c are possible solutions.
Answer:
I'm no mathematician but I'd say yes. If I'm wrong, I'm sorry
A forest covers 58,000 acres. A survey finds that 0.7% of the forest is old-growth trees. How many acres of old-growth trees are there?
Answer:
406
Step-by-step explanation:
0.7 % / 100 = 0.007
58000 * 0.007 = 406 acres
1. Anne had 1 hour for lunch.
She played for of an hour and read for to of an hour
a) How many minutes did she have left to eat lunch?
A sandbox in the shape of a trapezoid is show below. If a cover is to be made for the sandbox, what if the minimum amount of fabric needed?
The minimum amount of fabric needed for a sandbox is,
⇒ 72 feet²
We have to given that;
A sandbox in the shape of a trapezoid is show below.
And, a cover is to be made for the sandbox.
Hence,
The minimum amount of fabric needed for a sandbox is,
⇒ Area of fabric = 9 × 7 + (1/2 × 9 × 2)
= 63 + 9
= 72 feet²
Thus, The minimum amount of fabric needed for a sandbox is,
⇒ 72 feet²
Learn more about the multiplication visit:
https://brainly.com/question/10873737
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i have no idea what to do please answer!! i will give the brainyist !!
Answer:
Hey mate.....
Step-by-step explanation:
This is ur answer.....
Measure angle 2 = 125M.A 1 = 180 - 125 ( Supplementary angle)
M.A 1 = 55
M.A 3 = 125 (Vertically Opposite Angles)
M.A 4 = 55 (Vertically Opposite Angles)
M.A 5 = 55 ( Corresponding Angle)
M.A 6 = 125 ( Corresponding Angle)
M.A 7 = 125 ( Vertically Opposite Angle)
M.A 8 = 55 ( Vertically Opposite Angle)
Hope it helps!
mark me as the brainliest.......
Follow me! :)
Answer:
∠1 = 55°
∠3 = 125°
∠4 = 55°
∠5 = 55°
∠6 = 125°
∠7 = 125°
∠8 = 55°
Step-by-step explanation:
This is the detective case for vertical angles!!(dun-dun-dun!!!!)
Ok the info we have is that Angle 2 is 125°
Ok, quick, take ten seconds, the other group might take the victory coin. What is the vertical angle for angle 2?
-----
3! Correct
3 is the vertical angle because it is one part of the pair of opposite angles made by two intersecting lines.
3 is now 125°
The sum of all angles 1,2,3,4 is 360°
360° - 125° - 125° = 110°
110° / 2 (because 1 and 4 are vertical, they are equal) = 55°
1 = 55° and 4 = 55°
Lets do this for 5,6,7, and 8
Angle 1 = angle 5 because it is the law of same side interior(corresponding) angles, or they are the same because the lines are parallel to each other.
So angle 5= 55°
then angle 8 = 55°
6 = 125° and 7 = 125°
Yay you beat the other team. Great job you win a victory coin(which basically is something that is absolutely nothing)
pls help, due asap!
Find X to the nearest tenth.
A) 7.0
B) 6.1
C) 7.5
D) 6.8
Answer:
A) 7.0
Step-by-step explanation:
By angle bisector property:
[tex] \frac{x}{7.9} = \frac{18}{20.4} \\ \\ x = \frac{18 \times 7.9}{20.4} \\ \\ x = \frac{142.2}{20.4} \\ \\ x = 6.97058824 \\ \\ x \approx \: 7.0[/tex]
simplify (2x+1)(x+8) - (x-3)(2x+1)
Answer:
22x+11 is your answer
Step-by-step explanation:
(2x+1)(x+8) - (x-3)(2x+1)
(2x+1)(x+8-x+3)
(2x+1)(11)
=22x+11
The mean temperature for the first 4 days in January was 7°C.
The mean temperature for the first 5 days in January was 5°C.
What was the temperature on the 5th day?
Answer:
3c
Step-by-step explanation:
If the temperature is seceding everyday I can only guess the next day it decreases.