Answer:
y=-3x
Step-by-step explanation:
David was thinking of a number. David doubles it, then adds 3 to get an answer of 81.6. What
was the original number?
Answer:
39.3
Step-by-step explanation:
81.6 - 3 = 78.6
78.6 ÷ 2 = 39.3
It costs $16 for 8 specialty chocolates for Valentines Day. Find the unit rate 5 per item (how much for 1 chocolate).
Answer:
Unit Rate: 2$ per chocolate
If you're buying 5, it will cost $10
Step-by-step explanation:
Finding the unit rate:
16 ÷ 8 = 2
2 x 5 = $10
If you're talking about what happens if each chocolate cost $5 per item it would be
$5 x 8 chocolates = $40
I hope this helped! :)
What is the Inverse operation for sin
Answer:
arcsin function
Step-by-step explanation:
John buys a 25 ounces of liquid detergent for $10.75. How much does it cost per ounce?
Answer:
0.43 cents per once
Step-by-step explanation:
25ounces = 10.75
(divide 10.75 by 25)
ounces = .43
Kim drew a map of the Mississippi river the scale was 5 centimetres represents 120 miles the actual length of the Mississippi river is 2,320 miles approximately what is the length in centimeters of the Mississippi river on the map
A-19cm B-11,600cm
C-97cm D-600
Answer:
Step-by-step explanation:
2320mi(5cm/120mi)=96.66cm
So the length is rounded to 97cm
cmon and help dis is my last question
What question I don't see anything?
please help me iffffffffffffffff
Answer:
x=10
Step-by-step explanation:
6^2+8^2=x^2
36+64=x^2
100=x^2
x=10
Answer:
10
Step-by-step explanation:
The pythagorean theorem states that a^2+b^2=c^2. a and b are the shorter sides and c is the hypotenuse, or the longest side. You can tell the hypotenuse because it is opposite to the right angle.
Therefore, a=6, b=8 and c=x. You can switch a and b if you like, it doesn't really matter.
using the pythagorean thm. 6^2+8^2=x^2. You simplify the exponents and combine like terms to get x^2=100. You take the square root of both sides and get 10.
Mark had three bags of
jelly beans. If he ate 1/5 of a
bag each day, how long
would his jelly bean supply
last?
Plane
Answer:
Marks stash of jelly beans would last him 15 days.
Step-by-step explanation:
if you do 3 divided by 1/5 you would get 15.
I really need some help with this whoever helps I will give you the brainliest answer
Answer:
standard form: y = -x^2 + 15x
The table below displays the amount of sugar packets needed to sweeten cups of lemonade (number of sugar packets: 12, 16, 20, 24) (total cups of lemonade: 8, 10, 12, x) what is the total number of cups of lemonade that can be made with 24 packages of sugar.
Answer:
X=16
Step-by-step explanation:
you multiply 8 and 24 then get 192 and then you divide by 12 which gives you 16
The Gomez family left a 22% tip on their bill of $75.40. How much money
did they leave for a tip?
O $17.87
O $16.58
O $10.00
Answer:
$16.58
Step-by-step explanation:
22% of 75.40 = 0.22 × 75.40 = 16.588
Find the values of x and y.
help please work has to be shown ..
Answer:
x = 7 and y = 17
Step-by-step explanation:
16x + 9x + 5 = 180 cuz they are supplementary
25x = 175
x = 7
We also know that 16x + 4y = 180
so 16(7) + 4y = 180, so 4y = 180 - 112, so 4y = 68. y = 17
hope this makes sense
Find the slope of the line shown on the graph to the right (-4,-3) and (2,3)
Answer:
y=x+1
Step-by-step explanation:
to do this we have to use the slope formula, Rise/Run which is (y2-y1)/(x2-x1) so (3-(-3) or 3+3 divided by (2-(-4) or 2+4, so the slope would be 6/6 or 1. so it is up one over one, and since at the x coordinate of 0 it is y=1 we know the formula must be y=x+1
Answer:
m = 1
Step-by-step explanation:
Use the equation [tex]m=\frac{y2-y1}{x2-x1}[/tex] to find the slope.
next, the equation should look like: [tex]y=\frac{3+3}{2+4}[/tex]
Next you should get the equation: [tex]m = \frac{6}{6}[/tex]
Finally, just divide 6/6 and the answer will be m = 1
An adult leatherback turtle weighs 750 kilograms.
This is approximately 1.5 x 10^4 times its weight when it hatched.
To express the weight of the turtle when it hatched so that the number of units will possible whole number value, which of the following units of measure should be used?
(Note: 1 metric ton = 1,000 kilograms.)
A) Metric tons
B) Kilograms
C) Grams
D) Milligrams
Answer:
the answer is C)
Step-by-step explanation:
answer
B is the answear
Step-by-step explanation:
What is the value of x?
pls help ;-;
Answer:
39 degrees
Step-by-step explanation:
A triangle sums up at 180 degrees.
Therefore, 102+39=141.
Subtract 180 by 141 and you get 39!
To know if your answer is correct, add all angles and
make sure to get 180 in total!
Convert Decimals to Percent
0.241=
0.17=
0.66=
1.92=
0.286=
0.12=
Answer:
24.1%
17%
66%
192%
28.6%
12%
What are the zeros of f(x) = x2 + x - 12?
O A. x= -4 and x = 3
O B. x=-2 and x = 6
O C. =-3 and x = 4
O D. X=-6 and x = 2
Answer:
(x+4)(x-3) or A
Step-by-step explanation:
I'm going to assume that you meant to write x² and not x2
which means we have
x²+x-12
and we need to factor this
to do this we need two numbers that add up to 1 (b) but mulitply to -12 (a*c)
our two numbers are
4, -3
Which means the answer is
(x+4)(x-3)
[tex]{ \large{ \bf{f(x) = x {}^{2} + x - 12}}}[/tex]
[tex]{ \large{ \bf{zeros = \dfrac{ - b± \sqrt{b {}^{2} - 4ac } }{2a} }}}[/tex]
[tex]{ \large{ \bf{zeros = \dfrac{ - 1± \sqrt{1 {}^{} + 48 } }{2} }}}[/tex]
[tex]{ \large{ \bf{zeros = \dfrac{ -1± 7 }{2} }}}[/tex]
[tex]{ \large{ \bf{➢ \: \: zeros = - 4 \: \: and \: 3 }}} \: \: \: \: \: \: (ans)[/tex]
Opt A.) is the answerSolve it step by step using substitution.
y = 2x - 1
y = 5x - 7
Answer: look at the picture
Step-by-step explanation: hope this help
You are buying movie tickets online for a group of friends. You have to enter the number of tickets you want on the screen shown. You are using a debit card to pay for the tickets and you have a total of $45 to spend. How many tickets can you buy?
Answer:
I dont think there is enough info
im guessing 9 or 5
Step-by-step explanation:
reasoning: 45 factors are 1,3,5,9,15,45
so if it is 5 people then $9 per ticket or the other way around
While studying a population of porcupines, a group of scientists caught and tagged 95 porcupines. A week later, the scientists counted 640 porcupines and saw that 38 of them had tags. To the nearest whole number, what is the best estimate for the porcupine population?
Answer:
Step-by-step explanation:
95/p=38/640
p=95(640)//38
p=1600
10. The length of the radius of a bicycle wheel is 14 inches. Which of the following is closest to the circumference of the wheel?
Answer:
87.92
Step-by-step explanation:
you have your radius 14 inches to get the answer is
1: pie is 3.14
2: circumference is 2× 3.14×14
3: 3.14×14
4: 43.96 × 2
15% of what number is 72
Answer:
480
Step-by-step explanation:
Answer:
480
Step-by-step explanation:
PLEASE HELP ILL GIVE BIRRELANTIST
Answer:
A.) 555 in.^2
Step-by-step explanation:
When solving these types of things, I usually like to cut it up into smaller, easier to manage shapes.
You can cut that trapezoid into two triangles and one rectangle.Since both triangles are the same size, you don't need to divide the base and height by two, so you'll get the area of both triangles combined (which saves some work). We know the length of the rectangle and bases of the triangle combined is 44 inches, and that the length of just the rectangle is 30 inches, so we can just subtract 30 from 44 and divide it by two for the base of a triangle.44 - 30 = 14
14/2 = 7
Now that we filled in the information not listed, we can finally solve:
The base of one triangle is 7 inches, and the height is 15 inches.
Now, we just multiple and divide it by 2 for one triangle (it would be 52.5 inches).
But, we don't need to divide it by two because both triangles are the same size, so we can just get the sum of the area of both triangles combined by skipping that step (because triangles are half a square and two of those triangles make a full square).
7 x 15 = 105
The area of both triangles combined: 105 in.^2
Next, we need to solve the area of the rectangle. This is easy considering all you have to do is multiply 15 by 30 (length times width).
15 x 30 = 450
The area of the rectangle: 450 in.^2
Now, the final step. Addition. All you need to do is add up all the sums, and you're done.
450 + 105 = 555
The area of entire figure: 555 in.^2
NOTE: the symbol '^' represents exponents, so when you see 555 in.^2, it means inches squared (or to the power of 2)
help me please , I appreciate it :))
someone please help. we are using the Pythagorean theorem for this question.
for the first question you put the right answer, well done!
for the second question:
the missing side is 14.1 ft.
c²= a²+b²
16.7² = x² +8.9²
278.89= x²+79.21
x²=278.89-79.21= 199.68
we want to find x not x² so we square root x² and that gives us the value for x
x=Square root of 199.68
x= 14.1 ft
Fireworks are set off from a hill 80 feet above the Mississippi. The outer
shells will fall after exploding at its maximum height. The firework's height
about the surface of the river is given by the function h(t) = -16t^2 + 64t +
80. What is the height of the rocket after 1.5 seconds?
Answer:
752 ft
Step-by-step explanation:
Assuming t represents time, and the time we are trying to find is how high the rockets go after 1.5 seconds, we must take the equation and put 1.5 in wherever t occurs, this looks like:
-16(1.5)²+64(1.5)+80
solving this, we get:
-24²+96+80
576+96+80
752
5-1.
You now have a lot of experience working with equations that compare two quantities. For example, while working with the height of a tree, you found the
relationship y = 41+5. which compared 2 (the number of years after it was planted) with y (its height in feet). Use the equation for this tree to answer the
questions below
a. What was its starting height? How can you tell from the equation?
Answer:
If you mean y = 4x + 5, then the answer is 5 (the height would be 5 feet)
Step-by-step explanation:
Dillon is hooked on a new book series, The Galaxy. Each book in the series is the same length
and chronicles a different year in the Waka Waka Galaxy. Dillon has cleared off the top shelf
of his bookcase to leave room for each of the books as they come out. Each book takes up 1
inch of space along the shelf.
There is a proportional relationship between the number of books on the shelf, x, and how
much shelf space the books take up (in inches), y.
Graph this relationship. Select two points to draw a line.
Answer:
Sammy namana eh eh waka waka eh eh
What is the sum of this expression 9x+3 and 6x
Answer:
15x+3
Step-by-step explanation:
its simple math
Answer:
15x+3
Step-by-step explanation:
If 420 = 120%, what would 100% equal?
Answer:
350
Step-by-step explanation:
Introduction. Percent, p%
'Percent (%)' means 'out of one hundred':
p% = p 'out of one hundred',
p% is read p 'percent',
p% = p/100 = p ÷ 100
120% = 120/100 = 120 ÷ 100 = 1.2
100% = 100/100 = 100 ÷ 100 = 1
Percentage of 120% of what number = 420?
120% × ? = 420
? =
420 ÷ 120% =
420 ÷ (120 ÷ 100) =
(100 × 420) ÷ 120 =
42,000 ÷ 120 =
350
ProofHow do we check the result?If 120% × 350 = 420 =>
Divide 420 by 350...
... And see if we get as a result: 120%
Note:Multiply a number by the fraction 100/100,
... and its value doesn't change.
100/100 = 100 ÷ 100 = 1
n/100 = n%, any number.
Hope it is helpful....