Answer:
Natalie has $1.11 right now.
Step-by-step explanation:
1. Create an equation that represents Natalie's situation. Let x = the money Natalie has right now.
[tex]x+ 10 = 9(x)^2[/tex]
2. This equation is a quadratic, so we need to factorise to solve for x, the amount of money Natalie has right now.
3. [tex]x + 10 = 9x^2[/tex]
4. [tex]0 = 9x^2 -x - 10[/tex]
5. [tex]0 = 9x^2 + 9x -10x - 10[/tex]
6. [tex]0 = 9x(x+1) -10(x+1)[/tex]
7. [tex]0 = (9x-10) (x+1)[/tex]
8. [tex]x+ 1 = 0\\\\x = -1[/tex]
9. [tex]9x - 10 = 0\\9x = 10\\x = 10/9, 1.11[/tex]
10. The amount of money Natalie has now cannot be negative. Therefore, Natalie has $1.11 right now.
b) if your friend wants to be as happy as possible, how many cheeseburgers should he eat? How do you know ? Answer question B
Answer:
Find out what x should be the apply by the power of 2 then you should be good
Dan gets a senior citizen’s discount of 20% for any purchase at the local auto parts store. He bought an item that was half price. If the item originally cost $43, what did Dan pay?
Answer:
$4.30
Step-by-step explanation
$43 x %50 = $21.50
$21.50 x %20 = $4.30
If the item originally cost $43 then Dan paid $17.20 for the item after the discount.
What is Percentage?percentage, a relative value indicating hundredth parts of any quantity.
Given that Dan gets a senior citizen’s discount of 20% for any purchase at the local auto parts store.
We have to find the amount paid by Dan after the discount.
If the original price of the item was $43 and it was half price, then Dan paid:
$43 / 2 = $21.50
Dan also gets a 20% discount on this price, so the amount he paid after the discount is:
$21.50 - 0.20($21.50) = $17.20
Therefore, Dan paid $17.20 for the item after the discount.
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A carpenter lays 18 square feet of tile in 2/3 of an hour. How many square feet of tile does the carpenter lay per hour?
Answer:
x=24
Step-by-step explanation:
there are different ways to solve the problem
set up a proportion:
16/(2/3)=x/1
cross multiply
(2/3)x=16
(3/2)(2/3)x=(3/2)(16)
x=24 square feet per hour
a carpenter lays 16 square feet in 40 minutes (2/3 of an hour)
this means he lays 4 square feet every 10 minutes
8 square feet in 20 minutes
12 square feet in 30 minutes
24 square feet in 60 minutes
PLEASE SHOW ME HOS TO DO IT!!
Answer:
Ok
Step-by-step explanation:
A coin is tossed. If heads appears, a spinner that can land on any number from 1 to 3 is spun. If tails appears, a second coin is tossed instead of spinning the spinner. What are the possible outcomes?
H1 H2
H1 H2 H3 TH TT
HH HT
H1 H2 H3
Answer:
H1 H2 H3 TH TT
Step-by-step explanation:
Bhavik bought 3 liters of milk and 5 loaves of bread for a total of $11. A month later, he bought 4 liters of milk and 4 loaves of bread at the same prices, for a total of $10
How much does a liter of milk cost, and how much does a loaf of bread cost?
Answer:
Milk costs 75 cents per litre.
Bread costs $1.75 per loaf.
Step-by-step explanation:
Determine if the following system of equations has no solutions, infinitely many
solutions or exactly one solution.
-3x + 2y = -8
3x – 2y = 8
A. No Solutions
B. Infinitely Many Solutions
C.One Solution
Answer:
B) Infinitely Many
Step-by-step explanation:
0 = 0
Answer:
Step-by-step explanation:
Combine the equations
-3x + 2y = -8
3x – 2y = 8
obtaining:
-3x + 2y = -8
3x – 2y = 8
-------------------
0 + 0 = 0
Since this is always true, this system has an infinite number of solutions (B)
An airplane has an airspeed of 500 kilometers per hour (k/hr) in a
northerly direction (N 0˚ E). The wind velocity is 60 k/hr in a southeasterly (S45˚E)
direction. Let Va be the velocity of the plane relative to the air and Vw be the velocity
of the wind (both in terms of i and j).
1. Find vg = va + vw, the path of the plane relative to the ground. Round coefficients to the nearest tenth.
2. Find the actual speed and direction of the airplane relative to the ground. Round to the nearest tenth.
please help I really need this
No links!!
No spams!!
Answer:
725
Step-by-step explanation:
Please answer the question above.
Answer:
d = 12in
r = 6in
r^2 = 36
circumferenece = 37.7
Step-by-step explanation:
c = 2πr
c = 2π6 = 37.69911
Which of the following is the equation of a line in slope-intercept form for a
line with slope = 1 and y-intercept at (0,-1)?
please help
Are the triangles similar ? If so which shortcut (SSS, SAS, AA) proves they are similar?
Answer:
Yes, SAS.
Step-by-step explanation:
3/5 = 0.6 and so does 4.8/8
(a) Solve the equation 4 cos x + 2 = 3 for 0° < x < 360°.
Answer:
divide both sides by cosx
4 sinx/cosx = 1
4 tanx = 1
tanx = 1/4
x = arctan(1/4) = 14.04°
but the tangent is also positive in quad III
so x = 180+14.04 = 194.04°
x = 14.04° or 194.04°
Step-by-step explanation:
do by this step
The value of x is 75.52°.
What is trigonometry?Trigonometry is mainly concerned with specific functions of angles and their application to calculations. Trigonometry deals with the study of the relationship between the sides of a triangle (right-angled triangle) and its angles.
For the given situation,
The equation is 4 cos x + 2 = 3 for 0° < x < 360°.
⇒ [tex]4cosx=3-2[/tex]
⇒ [tex]4cosx=1[/tex]
⇒ [tex]cosx=\frac{1}{4}[/tex]
⇒ [tex]x=cos^{-1} (\frac{1}{4} )[/tex]
⇒ [tex]x=75.52[/tex]
Hence we can conclude that the value of x is 75.52°.
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Work out the answers of the following:
1) −2 - 7 + 4=
2)−20 + 11 − 6=
3)−5 + 14 − 8=
4)−13 − 4 + 6=
5)−30 − 80 + 40=
HELPPP PLEEEAAAASSSSEEE!!!! :(
Answer:
1)-5
2)-15
3)1
4)-11
5)-70
if negative use () for example
(-2)-7+4
Answer:
1. -5
2. - 15
3. 1
4. - 11
5. -70
x+7=15
help me fasttttttt
Answer:
x=8
Step-by-step explanation:
x+7=15
-7 -7
x=8
Mark me Brainliest?
Answer:
Its 8
Step-by-step explanation:
x+7=15
Subtract 7 from both sides.
x=8
PLSSSSSS HELPPPP 20 POINTSSS PLSSS
Please help me asap i need help quickly
Step-by-step explanation:
Volume of cuboid is length* breadth" height
Volume of cuboid is length* breadth" height=10*8*6= 480cm³
volume of traingular prism= this I don't know
okay wait...imagine there is other half of the traingle such that it becomes cuboid...now find area of cuboid = 5*5*4= 100
now divide by 2 to get half volume ( one triangular prism)
which is 100/2= 50
Volume of traingular prism= 50cm³
Total volume of figure= 480+50= 530cm³
if y=12 when x=3, find y when x =15 ( Y varies directly as x)
Lena made a scale drawing of an arcade. She used the scale 1 inch : 4 feet. If an air hockey table is 2 inches long in the drawing, how long is the actual air hockey table?
Answer:
it's 8ft
Step-by-step explanation:
1=4 2=8just put 2and2 together
Sally rides her bike to the store to get some Skittles. The store is 5 km away. If it takes her 10 minutes to get to the store what is her average speed?
PLEASE HELP!!!!!
What is the value of x? *
31°
53°
Answer:
X = 96
Step-by-step explanation:
This one is pretty simple
So we're dealing with angles here.
So what we want to do is add the two angles and it =180
Here's the equation so it makes more sense:
[tex]A+B=180[/tex]
so we'd place in those numbers
[tex]53+31=180[/tex]
add the two angles together
[tex]53+31=84[/tex]
than we'd subtract from 180 getting the value of X
[tex]180-84=96[/tex]
[tex]x=96[/tex]
I NEED HELP ASAP PLEASE
Answer:
[tex]P = \frac{A}{1 + rt}[/tex]
Step-by-step explanation:
We can simply divide both sides of the equation by (1 + rt) and we get the answer.
find the quotient
7 ($49.56
1. Andy's little brother has a toy box that contains 2 blue race cars, 1 green race cars, and 1 red race car. Andy removes 2 race cars from the toy box without looking. If Andy remove a blue car first and does not replace it, which best represents the sample space for the cars Andy Removes? *
10 points
A{ ( blue, green), ( blue, red) }
B{ ( blue, blue), (blue, green), ( green, red)}
C{ ( blue, blue), ( blue, green), (blue, red) ]
D{ (blue, red), ( green, red), (blue, blue)}
Answer:
I believe it’s A bc there are only 4 cars in the toy box
Step-by-step explanation:
Brainliest if correct?
thanks have a good day!
Answer: a........ I think im not sure sorry
Step-by-step explanation: it might be a because it is the only answer with four cars. All of the others i dont know.
Find the measure of the angle indicated (x). Round to the nearest tenth. Show your work to support your answer.
Answer:
solution:
relation between perpendicular and base is given by tan angle
so
[tex] \tan(ø) [/tex]=perpendicular/base=4/13
ø=tan-¹ (4/13)=17.10°
angle indicated =ø=17.10°
i need 17 thanksssssssss
What is the 109th term of the arithmetic sequence {963, 936, 909, 882, …}?
a.3,879
b.2,674
c.-1,980
d.-1953
Answer:
D. a109=-1,953
PLEASE HELP ME ASAP!
Answer:
B
Step-by-step explanation:
because its collecting the data, asking the 6th graders how they get to school
Please answer correctly!! I’ll mark as brainliest!
No links no fake answers
Answer:
8.
The sides given relative to angle x is the adjacent and opposite side. We can find x by using a trig function.
When using the adjacent and opposite sides, we use tangent.
The tan. of an angle, in this case x, is the opposite side over the adjacent side.
tan x=6/15
x=arc tan 6/15≈22
9.
cos 33°
You can use a calculator for this
10.
Because sin and cos are cofunctions, you can get x by doing 90-35=55°
z=55°
Find the area of a regular hexagon with apothem 15. The answer should be 18 square root 3 but I don’t know how to get there.
Answer:
36 because you got to add