Answer:
1:4
Step-by-step explanation:
84-63=21
there are 21 milk chocolates in the box
ratio of milk chocolates to total number of chocolates=21:84
simplify that=1:4
Every year, the value of a car decreases by 15% of its value in the previous year. If the value of the car was $86,700 in 2012, find its value in 2010.
Answer:
$112,710
Step-by-step explanation:
so first we have to find what is 15% of 86700
so 15/100×86700=$13005
so it is written that 86700 is in 2012 means 2010 it will be
2 times more which means 30% that means just have to do is multiply it two times which makes it $26010
so $86700+$26010=$112710
hope it helps you
please mark me as brainlist
Cari simplifies the expression (5 + 4) 2− 5 × 2. Part A Cari shows her work on the board. Use numbers and words to explain her mistake. (5 + 4) 2− 5 × 2 (5 + 16) − 5 × 2 21 − 5 × 2 16 × 2 32
Answer:Please see explanation for answer.
Step-by-step explanation:
Simplifying the expression
5 + 4) 2− 5 × 2
Carl's method
(5 + 4) 2− 5 × 2 -----first error was taking only 4 from the bracket and squaring it.
Instead of solving the bracket as a whole before solving outside. And once she got it wrong from the start, every other solving would be wrong
(5 + 16) − 5 × 2
21 − 5 × 2
16 × 2
32
The right method
In simplifying the expression, we must bring in Mind our Bodmas
Which means we tackle Brackets before division, then multiplication , then addition and lastly subtraction.
(5 + 4) 2− 5 × 2
Solving the bracket first we have
(9)2-5x2
Since there is no division, we move to multiplication and we can see two sites for multiplication(9 x 2 and 5x2)
18-10
Subtracting will give us 8 as our answer.
Juanita studied 3/2 hours on Saturday and 5/4 hours on Sunday. How many total hours did she study those two days?
Answer:
11/4
Step-by-step explanation:
3/2 can be re-written as 6/4. they now have the same denominator. 6/4 + 5/4 = 11/4
Help me! giving brainliest and lots o' points!
Answer:
2. $76.5
3. $10.12
Step-by-step explanation:
2. 110 × .35 = 38.5
110 - 38.5 = 71.5
71.5 × 1.07 = 76.50
3. 9 × 1.04 = 9.36
9.36 × 1.04 = 9.73
9.73 × 1.04 = 10.12
good luck, i hope this helps :)
2)76.5 110*0.35= 38.5, 110-38.5=71.5*0.07=5.005 or 5, 71.5+5=76.5
3)10.12 y1:9.36, y2:9.73, y3:10.12
4)28 minutes 32*0.08=2.56, 32-2.56=29.44*0.05=1.472, 29.44-11.472=27.968
5)$84 875*0.2=175, 875+175=1050*0.08=84
6)$467.04 562*0.2=112.4, 562-112.4= 449.6*0.06=26.976+449.6=
476.576*0.02=9.53152, 476.576-9.53152=476.04
7)store A, $12.24 a)612*0.3=183.6, 612-183.6=428.4
b)612*0.2=122.4, 612-122.4=489.6*0.1=48.96 489.60-48.96=440.64
440.64-428.4=12.24
8)$37.51 tip:32.57*0.18=5.86
32.57*0.1=3.26, 32.57-3.26=29.31*0.08=2.34, 29.31+2.34+5.86=37.51
9) going of $100 as the price the overall 25% discount to get a final price of $75 would be of a better value, because when you calculate the other 2 options you get the same answer of $76.5.
2) Find the number that makes the ratio equivalent to 1:4.3:
2 points
4
3
оооо
12
16
9514 1404 393
Answer:
12
Step-by-step explanation:
Maybe you want the equivalence ...
1 : 4 = 3 : 12
(Multiply both reduced ratio numbers by 3.)
The system of equations y = -2x+4 and
y = $x-3 is graphed below. What is the
solution to the system of equations?
Y
2
-1
Plsss help anyone
Answer:
The answer is (3,-2)
Step-by-step explanation:
[tex] \frac{1}{3} x - 3 = - 2x + 4 \\ \frac{1}{3} x + 2x = 7 \\ \frac{7}{3} x = 7 \\ x = 3 \\ then \: \\ y = - 2[/tex]
Megan ran 1 3/4 miles. What is this as an improper fraction?
Answer:
Yes it is improper fraction
how many ml in 0.006
Answer:
6ml
Step-by-step explanation:
Answer:
if 0.006 l= 6ml
Step-by-step explanation:
Aaliyah puts 42 gal of water into her
fish tank. This is 60% of the total
number of gallons the fish tank can
hold.
Answer:
the total is 70 gallons
hope this helped :)
Step-by-step explanation:
Last year Emily invested some money and had gained 8% profit and her friend, Samira invested some money and gained 9% profit. Their total profit on the two investments was $1720. This year they each decided to invest the same amount of money as last year. Emily gained 7% profit this year and Samira gained 6%. If they receive a total profit of $1280, how much money did Emily invest? Answer.
Answer:
Emily's investment = $8,000
Step-by-step explanation:
Let Emily's invested amount = x
Let Samira's amount = y
8% of Emily's amount = 8/100 × x = 0.08x
9% of Samira's amount = 9/100 of y = 0.09y
∴ 0.08x + 0.09y = 1720
multiplying through by 100
8x + 9y = 172000 - - - - - (1)
7% of Emily's amount = 0.07x
6% 0f Samira's amount = 0.06y
0.07x + 0.06x = 1280
multiplying through by 100
7x + 6y = 128000 - - - - - - (2)
Next, let us subtract eqn 2 from eqn 1
equation (1) - equation 2
8x + 9y = 172000
-
7x + 6y = 128000
= x + 3y = 44000 - - - - (3)
from eqn (3) x = 44000 - 3y - - - - - (4)
putting this value of x into eqn 1
8x + 9y = 172000
8 (44000 - 3y) + 9y = 172000
352000 - 24y + 9y = 172000
-15y = 172000 - 352000 = -180000
y = 180000 ÷ 15
y = $12,000
finding x using eqn (4)
x = 44000 - 3y
x = 44000 - 3(12000)
x = 44000 - 36000
x = $8,000
∴ Emily's investment = $8,000
A function has cheating x's.
True
False
Find the missing sides and leave answers as radicals in simplest form!! I need help
Answer:
21\deg 17'34"
Step-by-step explanation:
21\deg 17'34" i thin k
Help pls, answer choices listed!
Answer:
C
Step-by-step explanation:
Brainliest please
I need help!! please help
Answer:21
Step-by-step explanation:
Please help me!!! I need soooo much help
Answer: option 3
Step-by-step explanation:
What is the average of 4 1/2, 3 1/3, 2 , 2 1/6
Answer:
3
Step-by-step explanation:
To find the average add all these numbers together, then divide by how many numbers you have.
[tex]4\frac{1}{2} +3\frac{1}{3} +2+2\frac{1}{6} =12[/tex]
[tex]\frac{12}{4} =3[/tex]
[tex]Answer: 3[/tex]
I appreciate if y’all help me ^^
Answer:
24 ft²
Step-by-step explanation:
The formula to solve for area of a triangle is: [tex]\frac{1}{2} bh[/tex]. First multiply the base x height: 12 x 4 = 48. Now multiply by 1/2: 48 x 1/2 = 24. Your answer is 24 ft².
Hope it helps and is correct!
What is the degree of 4x^3 + 2x^2 + 3x -1 *
Answer:
Hello, and welcome to brainly im gonna be your personal assistant for today your awnser to this question is easy here it is 1.
The degree is 4
2. x^3 - 4x =0
3. x-1/2=0 x-2/3=0
Step-by-step explanation:
The outside temperature at midnight today in Polina’s hometown was 18 degrees Fahrenheit. The temperature increases by 1.2 degrees Fahrenheit each hour over the next 15 hours. Polina’s school does not send students outside for recess if the outside temperature is 32 degrees Fahrenheit or lower. Recess at her school always starts on the half hour or hour. Which statement is true about recess at Polina’s school?
Answer:
Just read and study on you lesson/book and take notes
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
Which set of ordered pairs represent y as a function of x?
a) {(-5,3) (6,2) (8,-9) (-5,4)}
b) {(9,4) (8,4) (9,5) (8,5)}
c) {(6,8) (7,8) (8,8) (9,9)}
d) {(-7,4) (-7,5) (-7,10) (-7,6)}
Answer:
The quadratic equations and their solutions are;
9 ± √33 /4 = 2x² - 9x + 6.
4 ± √6 /2 = 2x² - 8x + 5.
9 ± √89 /4 = 2x² - 9x - 1.
4 ± √22 /2 = 2x² - 8x - 3.
Explanation:
Any quadratic equation of the form, ax² + bx + c = 0 can be solved using the formula x = -b ± √b² - 4ac / 2a. Here a, b, and c are the coefficients of the x², x, and the numeric term respectively.
We have to solve all of the five equations to be able to match the equations with their solutions.
2x² - 8x + 5, here a = 2, b = -8, c = 5. x = -b ± √b² - 4ac / 2a = -(-8) ± √(-8)² - 4(2)(5) / 2(2) = 8 ± √64 - 40/4. 24 can also be written as 4 × 6 and √4 = 2. So x = 8 ± 2√6 / 2×2= 4±√6/2.
2x² - 10x + 3, here a = 2, b = -10, c = 3. x =-b ± √b² - 4ac / 2a =-(-10) ± √(-10)² - 4(2)(3) / 2(4) = 10 ± √100 + 24/4. 124 can also be written as 4 × 31 and √4 = 2. So x = 10 ± 2√31 / 2×2 = 5 ± √31 /2.
2x² - 8x - 3, here a = 2, b = -8, c = -3. x = -b ± √b² - 4ac / 2a = -(-8) ± √(-8)² - 4(2)(-3) / 2(2) = 8 ± √64 + 24/4. 88 can also be written as 4 × 22 and √4 = 2. So x = 8 ± 2√22 / 2×2 = 4± √22/2.
2x² - 9x - 1, here a = 2, b = -9, c = -1. x = -b ± √b² - 4ac / 2a = -(-9) ± √(-9)² - 4(2)(-1) / 2(2) = 9 ± √81 + 8/4. x = 9 ± √89 / 4.
2x² - 9x + 6, here a = 2, b = -9, c = 6. x = -b ± √b² - 4ac / 2a = -(-9) ± √(-9)² - 4(2)(6) / 2(2) = 9 ± √81 - 48/4. x = 9 ± √33 / 4 .
Step-by-step explanation:
Answer with Explanation:
To qualify as a function, each x value may not have more than 1 Y value.
This rules out A, B, and D.
The answer is C.
Why is A incorrect? -5 (the x value) has more than one y value so it is wrong.
Why is B incorrect? 9 (the x value) has more than one y value so it is wrong.
Why is D incorrect? -7 (the x value) has more than one y value so it is wrong.
You can also use the vertical line test to graph these pairs. Then, test by drawing a vertical line through the graph. If the vertical line goes through more than 1 pair, it is not a function.
Please help due in 19 minutes
Answer:
42 yd
Step-by-step explanation:
Formula for the area of a rhombus is the length times the width, all divided by 2. A is given as 26, and the total is 546, so the equation is set up like this:
[tex]\frac{26d}{2} =546[/tex]
(Solving for d)
First, multiply both sides by 2 to get:
26d = 1,092
Then, divide both sides by 26 to isolate the variable d:
d = 42
What is the area of a triangle with a base of 24 inches and a height of 8 inches? Remember the formula to find the area of a triangle is 1/2bh (1/2 x b x h). Also, remember how to label your answer!
Answer:
96inches
Step-by-step explanation:
24*8=192
192/2=96
Hi :)))))))))))))))))
Answer:
Answer:
Step-by-step explanation:
Hello!
Have a great day!
Kate is painting a ceramic paperweight shaped like a rectangular prism, as shown here. She wants to find the surface area of the paperweight so she can determine how much paint she needs.
The area of one of the bases is .
The area of each lateral rectangular face is .
The surface area of the paperweight is .
Answer:
area of one of the basses is 1.44 square feet
area of each lateral rectangular face is 0.96 square feet
SURFACE AREA OF THE PAPERWEIGHT IS 6.72 square feet.
Step-by-step explanation:
Answer:
The other person is 100% right! Give them brainliest :)
Step-by-step explanation:
Simplify( (-4/5)^-2)^2
value of x
plz answer correctly
Answer:
it is 80°
cause it is coming from the same cord AB
O and C will be same
Answer:
x = 40
Step-by-step explanation:
x = 80÷2 = 40
Central angle theorem
Linear or non linear?
Answer:
nonlinear
Step-by-step explanation:
Express the ratio below in its simplest form
1/2 : 1/3
Answer:
3 : 2
Step-by-step explanation:
Given
[tex]\frac{1}{2}[/tex] : [tex]\frac{1}{3}[/tex] ( multiply both parts of the ratio by 6 , the LCM, of 2 and 3 )
= 3 : 2
1/2:1/3
multiply the first fraction by the inverse of the second
1/2×3/2=3/2
the answer is 3:2
75.854 expanded form
Answer:
70+5+0.8+0.05+0.004
Step-by-step explanation:
DEF, find the length of d, to the nearest tenth, given that ∠D=110o, e = 10cm and f = 14cm.
Answer:
d = 19.8 cm
Step-by-step explanation:
Use the law of cosines
[tex]d^{2} = e^{2} + f^{2} -2ef cos D\\d^{2} = 10^{2} + 14^{2} -2(10)(14) cos 110\\[/tex]
= 100 + 196 - 280 cos 110
= 296 - (-95.765640)
= 391.765640
[tex]d = \sqrt{391.7656401}[/tex]
d = 19.8 cm