Answers
Answer:
25%
Step-by-step explanation:
To solve this, we can use the percent change formula shown in the picture attached below. [tex]x_{2}[/tex] is the new value, [tex]x_{1}[/tex] is the old value, and [tex]C[/tex] represents the change. For this problem, 80 is the new value and 64 is the old value. Let's plug those numbers into the formula and solve for the percent change:
[tex]C = \frac{(80-64)}{64} \\[/tex] × [tex]100[/tex]
[tex]C = \frac{16}{64}[/tex] ×[tex]100[/tex]
[tex]C = 0.25[/tex] ×[tex]100[/tex]
[tex]C = 25%[/tex]
Thus, the answer is 25%.
Related Questions
State the slope. Interpret the slope. What foes it mean in the context of this problem
Answers
Answer:
Step-by-step explanation:
SLOPE IS M
A forest covers 68,000 acres. A survey finds that 0.8% of the forest is old-growth trees. How many acres of old-growth trees are there?
Answers
Answer:
544 acres
Step-by-step explanation:
There is 100% in a whole.
1% is 1/100th of the whole, or 0.01 of it. We get this because 1/100 = 1/100 = 0.01
Similarly, 0.8/100 = 0.008. We then multiply the decimal by the total to get
(0.008) ( 68000) = 544 acres
please help find them
1 AB
2 BC
Answers
Answer:
AB ≈ 15.7 cm, BC ≈ 18.7 cm
Step-by-step explanation:
(1)
Using the Cosine rule in Δ ABD
AB² = 12.4² + 16.5² - (2 × 12.4 × 16.5 × cos64° )
= 153.76 + 272.25 - (409.2 cos64° )
= 426.01 - 179.38
= 246.63 ( take the square root of both sides )
AB = [tex]\sqrt{246.63}[/tex] ≈ 15.7 cm ( to 1 dec. place )
(2)
Calculate ∠ BCD in Δ BCD
∠ BCD = 180° - (53 + 95)° ← angle sum in triangle
∠ BCD = 180° - 148° = 32°
Using the Sine rule in Δ BCD
[tex]\frac{BC}{sin53}[/tex] = [tex]\frac{BD}{sin32}[/tex] = [tex]\frac{12.4}{sin32}[/tex] ( cross- multiply )
BC × sin32° = 12.4 × sin53° ( divide both sides by sin32° )
BC = [tex]\frac{12.4sin53}{sin32}[/tex] ≈ 18.7 cm ( to 1 dec. place )
Margaret is a waitress at The Seafood Bonanza. She earns $3 an hour plus 90% of her tips. Write an equation for her salary, S, if she works h hours and earns d dollars
in tips.
Answers
Answer: 3h + 0.9s
Step-by-step explanation:
90% is the same as 0.9 of..
What is the area of the triangle?
7
5
4
Answers
A watch was on sale for 70% off. The sale price is $60. What was the original price?
Answers
Answer:
78 dollars
Step-by-step explanation:
Which expressions have a value of 49 when w = 4? Choose the correct answers and show your work.
A) 3w2+ 25
B) 7(w2- 9)
C) w3/8+ 41
Answers
Answer:
Step-by-step explanation:
Simplify the expression given below.
X+2/x^3+2x^2-9x-18 divided by 3x+1 / x^2-9
A. 1 / (x+3)(x-3)
B. 3x +1
C. 1 / 3x+1
D. 3x + 1 / (x+3) (x-3)
Answers
Answer:
D
Step-by-step explanation: your welcome have a good day
Answer:
C. [tex] \dfrac{1}{3x + 1} [/tex]
Step-by-step explanation:
[tex] \dfrac{x + 2}{x^3 + 2x^2 - 9x - 18} \div \dfrac{3x + 1}{x^2 - 9} = [/tex]
Factor all polynomials.
[tex] = \dfrac{x + 2}{x^2(x + 2) -9(x + 2)} \div \dfrac{3x + 1}{(x + 3)(x - 3)} [/tex]
[tex] = \dfrac{x + 2}{(x^2 - 9)(x + 2)} \div \dfrac{3x + 1}{(x + 3)(x - 3)} [/tex]
[tex] = \dfrac{x + 2}{(x + 3)(x - 3)(x + 2)} \div \dfrac{3x + 1}{(x + 3)(x - 3)} [/tex]
To divide by a fraction, multiply by its reciprocal.
[tex] = \dfrac{x + 2}{(x + 3)(x - 3)(x + 2)} \times \dfrac{(x + 3)(x - 3)}{3x + 1} [/tex]
Cancel out common factors in the numerator and denominator.
[tex] = \dfrac{1}{3x + 1} [/tex]
¿Qué es una semirrecta numérica?
Answers
Answer:
La respuesta está abajo
Step-by-step explanation:
Un rayo numérico es una línea con un extremo. Un rayo comienza en un punto dado y se va en una dirección determinada para siempre, hasta el infinito. El punto donde comienza el rayo se llama el punto final.
por favor marca me brainliest con la corona
Help ill mark u brainliest
Answers
Answer:
m∠ONB = 81°
Step-by-step explanation:
If angle MNJ and angle ONB are congruent and MNJ is 81 degrees and OJ is a straight line then ONB should also be 81 degrees in which the other side is 99 degrees.
I need help I don’t get it
Answers
You need to show the question to get the answer. All you can see is the lines...
write the equation of a line that has a m= -5 and passes through the point (-1,4)
write a paragraph describing the steps taken to find the linear equation and include the answer the the question in your response.
at least 6 sentences plz
Answers
Answer:
We have a slope and a point, this way, we do not need to find the slope using two points. We can find the line using the Slope Form to turn it into Slope-Intercept Form, also known as "y = mx + b". We can use the Slope Form which is "y - y1 = m(x - x1)". A coordinate is "(x,y)", so that means, "(-1,4)" means that x = -1 and y = 4. We can substitute y1 for 4 and x1 for -1, and m for -5 since m is the slope. Plugging that information into the Slope Form Formula we get "y - 4 = -5(x - (-1))". We know that a negative with a negative turn positive, so we can use this information to change the formula to "y - 4 = -5(x + 1)". Now we distribute and simplify, these steps are shown below.
y - 4 = -5(x + 1)
y - 4 = -5x -5
y - 4 + 4 = -5x - 5 + 4
y = -5x - 1
Now that we have simplified it, we can see that the slope is -5 and the -1 is the y-intercept. To check this is a linear equation is to graph it, or substitute three x-coordinate or y-coordinates and draw a line. In conclusion, the equations is y = -5x - 1.
Step-by-step explanation:
Lucas has a goal to practice his violin for 300 minutes per week. How many more minutes does Lucas needs to practice in order to meet his goal ? On Saturday he practice for 45 minutes On Sunday he practice for 50 minutes
Answers
Answer:
205 minutes
Step-by-step explanation:
Step one:
given data
We are told that Luca's goal is to practice violin for 300 minutes in a week
He has practiced 45 minutes and 50 minutes for Saturday and Sunday already
that is in all, 45+50= 95minutes
Required
The remaining minutes of practice
Step two:
the deficit in practice is
300-95= 205 minutes
need a correct answer
A B C D E F
Answers
Answer:
B and D
F also has vertical angles however they haven't been numbered like the others
Jim has $50 to spend at an office supply store. He wants to buy $1.69 per pen and S5
each note pad. Jim buys pens and a note pad. Write an equation
Answers
this dosent make sense
Step-by-step explanation:
7(m+5) = 21
What is it?
Answers
Answer:
m = -2
Step-by-step explanation:
Look at the attached image. First, we divide both sides by 7 to get m + 5 = 3. Now, we subtract 5 from both sides to get m = -2. Now, we substitute m for -2. As we can see, it checks out.
The solution of expression is,
m = - 2
We have to give that,
An expression to solve,
7 (m + 5) = 21
Now, simplify the expression as,
7 (m + 5) = 21
Divide both sides by 7,
m + 5 = 21 / 7
m + 5 = 3
Subtract 5 both side,
m = 3 - 5
m = - 2
So, The solution is, m = - 2
Learn more about the equation visit:
brainly.com/question/28871326
#SPJ6
.
What is (4x2-9X+1) -(5x2-x-7) written in standard form?
Answers
Answer:
(9-9x) - (3-x)
Step-by-step explanation:
(4x2 -9x +1) - (5x2 -x -7)
4x2+1= 9. 5x2-7= 3
(9-9x) - ( 3-x)
Can yall find EB? Round the the nearest hundred. AD=8.98, AB=6.47. ABCD is a rectangle
Answers
Answer:
5.53408980773 or 5.534
Step-by-step explanation:
Let's take AD as a, AB as b and DB as c
a2+b2 =c2
(8.98)2 + (6.47) 2 =c2
80.6404 + 41.8609 =c2
The number 2 is square . take it like square
122.5049 =c2
[tex] \sqrt{c \: \: } = \sqrt{122.5049 } [/tex]
C=11.0681796155
this valse is DB but the question say EB so dividend by 2 because rectangle diagonal are equal
So EB =11.0681796155/2
EB =5.5340890773
Help show work please
Answers
Answer:
8x squared
Step-by-step explanation:
all you do is multiply the 4 and 2 to get the 8 and the x's multiply together causing it to square it making it 8x squared
2.5×10^3 times what number is equal to 5×10^6?
Answers
Answer:
2.5x10^3= 2,500
5x10^6= 5,000,000
Step-by-step explanation:
Here is a great trick that I always keep in mind whenever you are squaring 10 you add that many zeros for example.
10^4= 10000 (there are 4 zeros).
Help I will mark brainliestttt
Answers
Answer:
c
Step-by-step explanation:
its c
Which value is not equivalent 0.37 0.370 37/100
Answers
Unless of course you are getting into significant digits, in which case the second one is different from the first.
Otherwise, they all equal 37/100
Anyone able to help ?
Answers
Answer:
Step-by-step explanation:
Infinity solutions
On a math exam containing 36 questions, there are
8 questions on geometry and 6 questions on
statistics. The other questions are on numeration.
Which part of the exam is on numeration?
Answers
Answer:
22
Step-by-step explanation:
Зу – х = -5
-7х + 4 = –18
Solve each system of equation using elimination
Answers
Answer:
(1)xy=-5-3
-8ans
Step-by-step explanation:
(2) -3x =-18
-15ans
The measures of the angles of a triangle are shown in the figure below. Solve for x.
(5x-3)°
(x+9)°
Answers
Answer:
14
Step-by-step explanation:
5x-3+ x+9 + 90= 180
6x+ 96=180
6x=180-96
6x=84
x=84/6
x=14
Derek has $54 to spend for Christmas presents. He wants to spend an equal amount of his money on his Mom, Dad, and 2 sisters. How much can he spend on each family member? (Do it in Long division pls)
Answers
the price of a toy usually costing £50 is increased to £65.
Answers
Answer:
I am assuming you want the percentage increase in the price.
Step-by-step explanation:
The percentage increase is ( 15/50) * 100
= 15 * 2
= 30%.
FAST
Work out using calculator
a) 122
b) 142
c) 62
Find the square root of
a) 121
b) 900
c) 729
Answers
Answer:
Find square root
a 11×11
B 30×30
C 27×27
Hayden had 2 1/2 gallons of water in his watering can. The seed packet said to use 1/4 of a gallon for peppers and 5/8 of a gallon for tomatoes. Hayden then used some of the water for lettuce. If Hayden had 3/4 of gallons of water left, how much water did he use for lettuce?
Answers
Answer:
he used 3\4 im guessing
Step-by-step explanation:
Answer:
Around 7/8 of a gallon
Step-by-step explanation: