Answer:
[tex]\$498.75[/tex]
Step-by-step explanation:
Let [tex]x[/tex] be the original price of the item. We can set up the following equation:
[tex]x\cdot (1-0.2)=399[/tex].
Solving for [tex]x[/tex], we get:
[tex]x\cdot 0.8=399,\\x=\frac{399}{0.8},\\x=\fbox{$\$498.75$}[/tex].
Solve the following quadratic equation by factoring.
f (x) = -x^2-11x – 28
Answer:
(-x-7)(x+4)
Step-by-step explanation:
plz help me math work question in photo
the answer is C.
the exponent of 10 is -2, so the decimal point will move to the left two spaces which makes .0254 mm
11. Jeremy ran 14 races. Each race was 5 kilometers long. Approximately
how many miles did Jeremy run altogether in the races? (1 kilometer
0.62 mile)
A 43 miles
B. 70 miles
C 113 miles
D
200 miles
Answer: B
Step-by-step explanation:
3z - 3
when z = 7
pls respond asap
Determine if the solution set for the system of equations shown is the empty set, contains one point or is infinite.
x+y = 6
x - y = 0
I’ve been stuck for almost a hour pls help . if not it’s cool
The area of Neil's sqaure bedroom is 256 feet2. what is the length of any sidewall in his bedroom
Answer: 64 ft for each wall in his bedroom..
Step-by-step explanation: 256 divide 4 = 64.
What is the decimal equivalent of 1/18
The decimal equivalent of 1/18 is 0.125
Find the circumference of a circle with the radius 13.4 feet. Round your answer to two decimal places.
Step-by-step explanation:
circumference = 2πr
π = 3.14
r = 13.4
2 × 3.14 × 13.4 = ¯\_(ツ)_/¯
yoooo i need help lmk the answers
HELP PLEASE ASAP!!!!!
Answer:
1 1/2 cups of flour :))
Step-by-step explanation:
Answer:
2 5/8 cups ur welcome
you convert 1 3/4 to improper fraction so 7/4. then divide 7/4 by 2 which is 0.875. 0.875+7/4= 2.625 which is 2 2/3.
Need as soon as possible
Answer: 136 square feet
=======================================================
Explanation:
The front face is a triangle with base 6 and height 4.
The area is 0.5*base*height = 0.5*6*4 = 12 square feet
The back face is also 12 square feet since the front and back faces are identical triangles.
So far we have 12+12 = 24 square feet of surface area.
--------------------
The bottom face, that runs along the floor or ground, is a rectangle that is 6 ft by 7 ft. So we have 6*7 = 42 square feet of surface area here. This adds onto the 24 we found earlier to get 24+42 = 66 square feet so far.
To find the left and right upper faces, we'll need to find the length of the hypotenuse first. The 6 ft cuts in half to 3 ft. The right triangle on the left has side lengths of 4 ft and 3 ft as the two legs. Use the pythagorean theorem to find the hypotenuse is 5 ft. We have a 3-4-5 right triangle.
This means the upper left face is 5 ft by 7 ft leading to an area of 5*7 = 35 square feet. The same can be said about the upper right face.
So we add on 35+35 = 70 more square feet to the 66 we found earlier to get a grand total of 70+66 = 136 square feet of surface area.
M is a directly proportional to r cubed when r=4 M=160
1) work out the value of M when r=2
2) work out the value of r when M=540
Answer:
1) When r = 2, M = 20.
2) When M = 540, r = 6.
Step-by-step explanation:
M is a directly proportional to r cubed
This means that the equation for M has the following format:
[tex]M = ar^3[/tex]
In which a is a multiplier.
When r=4 M=160.
We use this to find a. So
[tex]M = ar^3[/tex]
[tex]160 = a(4^3)[/tex]
[tex]64a = 160[/tex]
[tex]a = \frac{160}{64}[/tex]
[tex]a = 2.5[/tex]
So
[tex]M = 2.5r^3[/tex]
1) work out the value of M when r=2
[tex]M = 2.5*2^3 = 2.5*8 = 20[/tex]
When r = 2, M = 20.
2) work out the value of r when M=540
[tex]M = 2.5r^3[/tex]
[tex]540 = 2.5r^3[/tex]
[tex]r^3 = \frac{540}{2.5}[/tex]
[tex]r^3 = 216[/tex]
[tex]r = \sqrt[3]{216}[/tex]
[tex]r = 6[/tex]
When M = 540, r = 6.
Part B Write an expression based on Hayley’s method to find the total number of pieces of fruit.
Answer:
3x + 3y
Step-by-step explanation:
3x (x being the number of apples)
3y (y being the number of bananas)
Which answer choice shows an inequality that represents the problem below? Marcus needs more than 550 tickets to get the prize he wants at the arcade. He already has 125 tickets and can earn 24 tickets each time he plays an arcade game. How many games will he have to play in order to have enough tickets to win the prize he wants?
24x + 125 > 550
24x + 125 >_ 550
24x + 125 < 550
125x + 24 > 550
Answer: 24x + 125 > 550
Step-by-step explanation:
there are 8 playing cards in a bag. 2 of those cards are spades. what is the probability of picking a spade randomly from a bag?
answer as a simplified fraction in form a/b
Answer:
thanks for the points
Step-by-step explanation:
Answer:
1/4
Step-by-step explanation:
Help pleasee needed
Answer:
Yes
AA similarity
DCE
Step-by-step explanation:
plz give thx and brainliest!
To practice for an Ironman competition, John swam 0.86 kilometer each day for 3 weeks. How many meters did he swim in those 3 weeks?
Step-by-step explanation:
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Answer:
18,060
Step-by-step explanation:
0.86 kilometers is the same as 860 meters. If he swam 860 meters a day for twenty-one days, (860 times 21) he'd end up with 18,060 meters in total.
(That's about 722 1/2 lengths of a pool, but you didn't need to know that :P )
ANSWER FAST PLS HAVE 5 MIN FOR THIS
Employees of a painting service paint the interior walls of homes and office buidings.
The following table shows the number of cons of point the employees use, and the
number of square feet they cover.
Cans of paint
3
Area painted (square feet) 375
1125 1500
Which equation describes the relationship between the number of cons of paint
used, and the number of square feet that are covered?
1
2
750
A
y = 375x + 375
B
y=+*
375
y = 50x + 325
D
y = 375x
Answer:
Y=375x
Step-by-step explanation:
thats the answer
SUPER EASY QUESTION!!! HOW SMART ARE YOU? Which number has a 3 with a value that is 100 times greater than the value of the 3 in 20.342? Here are the answer choices choose wisely : 36.25 108.173 423.06 or 307.18
Answer:
36.25 ez I’m big brain
Step-by-step explanation:
As per MBTI personality people work
based on hunches and feelings use
their imagination and get the main
idea while missing some of the facts
are
Select one:
a. Thinking
b. Sensing
c. Introversion
d. Intuition
= Intuition
Step-by-step explanation:
As per MBTI personality people work
based on hunches and feelings use
their imagination and get the main
idea while missing some of the facts
are intuition
If the ratio between boys and girls is 3 to 2 if there are 12 boys how many girls are there
Answer:
the ratio is 12:8 boys to girls
Step-by-step explanation:
if the amount of boys is 12 then multiply the 3 by 4 and using distribution multiply the 2 by 4 as well to get 8 girls
You receive an inheritance of $15,500, and you place the full amount into a bank account. The bank pays a simple interest rate of 7.5% per year. How much interest have you earned after three years? Give your answer in dollars to the nearest dollar.
Answer:
348,750 dollars in 3 years
Step-by-step explanation:
You inheritanced 15,500 dollars. You put that into a account which has a 7.5% interest rate for one year. 15,500 x 7.5 = 116,250 a year. now you want to know how much that'll be in 3 years multiply 116,250 x 3 = 248,750.
(I'm sorry if this is incorrect i tried doing the math correctly!)
Answer:
Step-by-step explanation:
I = P x r x t
p=15500
i=7.5% must change to decimal of 0.075
t= 3 (years)
In this case
I= 15,500 X 0.075 X 3= 3,487.5
(1, 162.5 x 3)= 3487.5
Solved to nearest dollar of 3,488
Help Fast Please!!!!!!!!
Answer:
answer is -8.4 if you add 3.6 and two it's 5.6 times 1.5 it will be -8.4
Answer:
2.4
Step-by-step explanation:
It should be 2.4 based on what I see here. Distribute -1.5 into -3.6 + 2 to get 5.4 - 3. You should get 2.4 as your answer in which it is the second option, the picture needs to be in standing position next time because it is upside down though but it can be flipped either way.
PLEASE HELP!!!! WILL GIVE POINTS
Answer:
3.0
Step-by-step explanation:
what is the decimal equivalent to 5/7
Answer:
0.714286
Step-by-step explanation:
yes
Ski rental at Swinter a mountain resort is $40, and S is the price of the lift ticket. Write an expression to show the cost you lift tickets without ski rental and three left tickets with ski rental. Simplify your expression
Answer:
100
Step-by-step explanation:
Answer:95.12
Step-by-step explanation:trust me
Look at the arrows in the drawings below. Indicate whether the arrows are parallel, perpendicular, or neither.
Answer:
In A and D the arrows are perpendicular, in B they are parallel and in C they are neither parallel nor perpendicular.
Step-by-step explanation:
PLEASE HELP 8 ml of a 80% acid solution was mixed with 12 ml of a 20% acid solution. What is the percentage of acid in the new solution?
Answer:
44%
Step-by-step explanation:
So you have 2 bottles. One bottle is 8ml and is 80% acid. the other is 12 ml and is 20% acid.
This means there's 6.4 ml of acid in bottle 1(8*0.8) and 2.4 ml of acid in the other one(12*0.2).
The total amount of liquid is 8+12 = 20
The total amount of acid is 6.4+2.4 = 8.8
Percentage of acid in the new solution is 8.8/20 = 0.44 = 44%
If the exchange rate is 1 Euro to .80 pounds, how many pounds would you spend to purchase something that costs 30 Euros
Step-by-step explanation:
If the exchange rate is 1 Euro to 0.80 pounds
So,
30 Euro=0.8×30=24.0=24 pounds.
so,
24 pounds would you spend to purchase something that costs 30 Euros
If a is a positive integer such that a =
?
(-16) *(-16) * (-16) * (-16), what is the value of va