1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Diano4ka-milaya [45]
2 years ago
5

Please help , and explain because i keep getting it wrong and it’s getting on my nerves

Mathematics
2 answers:
skad [1K]2 years ago
8 0

Answer:

Olga's mistake: She did not multiply \frac{1}{4} and \frac{1}{3} in the beginning

Step-by-step explanation:

The main problem is that when a number is outside of the parentheses on the left side, then you have to multiply that number, in this case \frac{1}{4}, by both numbers in the parentheses. After that, continue solving the problem as you usually would. Hope this helped!

Tomtit [17]2 years ago
5 0
I’m sorry I need points I hope you find your answer
You might be interested in
9x+7/2-(x-(x-2/7) )=36<br>​
dalvyx [7]

Answer:

9x +  \frac{7}{2}  - (x - (x -  \frac{2}{7} )) = 36 \\ 9x +  \frac{7}{2}  - x + x  - \frac{2}{7}  = 36 \\ 9x +  \frac{7}{2}  -  \frac{2}{7}  = 36 \\ 9x +  \frac{49 - 4}{14}  =  36 \\ 9x +  \frac{45}{14}  = 36 \\ 9x = 36 -  \frac{45}{14}  \\ 9x =  \frac{504 - 45}{14}  \\ 9x =  \frac{459}{14}  \\ x =  \frac{459}{14 \times 9}  =  \frac{459}{126}  \\ x = 3 . 64 \\ thank \: you

3 0
3 years ago
A toy has an original price of $12. Find the new price after 45% decrease
AnnyKZ [126]

Answer:

New price =$6.60

Step-by-step explanation:

deduction \ percent = 45\% \\\\dedecution \ price = \frac{45}{100} \times12 = \$5.40\\\\\ Therefore , cost \ of \ toy \after \ deduction  = 12 - 5 .40= \$ 6.60

3 0
3 years ago
Read 2 more answers
A company that makes mirrors sends their slightly flawed products to a discount store. This week, the company sent four mirrors
Vedmedyk [2.9K]

Answer:

mirror 4

Step-by-step explanation:i just did the quiz and got it right

5 0
3 years ago
Read 2 more answers
-3(x - 1) + 8(x - 3) = 6x + 7 - 5x<br> Please helppp
Levart [38]

Answer:

x=7

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

6 0
2 years ago
Find the length of the following​ two-dimensional curve. r (t ) = (1/2 t^2, 1/3(2t+1)^3/2) for 0 &lt; t &lt; 16
andrezito [222]

Answer:

r = 144 units

Step-by-step explanation:

The given curve corresponds to a parametric function in which the Cartesian coordinates are written in terms of a parameter "t". In that sense, any change in x can also change in y owing to this direct relationship with "t". To find the length of the curve is useful the following expression;

r(t)=\int\limits^a_b ({r`)^2 \, dt =\int\limits^b_a \sqrt{((\frac{dx}{dt} )^2 +\frac{dy}{dt} )^2)}     dt

In agreement with the given data from the exercise, the length of the curve is found in between two points, namely 0 < t < 16. In that case a=0 and b=16. The concept of the integral involves the sum of different areas at between the interval points, although this technique is powerful, it would be more convenient to use the integral notation written above.

Substituting the terms of the equation and the derivative of r´, as follows,

r(t)= \int\limits^b_a \sqrt{((\frac{d((1/2)t^2)}{dt} )^2 +\frac{d((1/3)(2t+1)^{3/2})}{dt} )^2)}     dt

Doing the operations inside of the brackets the derivatives are:

1 ) (\frac{d((1/2)t^2)}{dt} )^2= t^2

2) \frac{(d(1/3)(2t+1)^{3/2})}{dt} )^2=2t+1

Entering these values of the integral is

r(t)= \int\limits^{16}_{0}  \sqrt{t^2 +2t+1}     dt

It is possible to factorize the quadratic function and the integral can reduced as,

r(t)= \int\limits^{16}_{0} (t+1)  dt= \frac{t^2}{2} + t

Thus, evaluate from 0 to 16

\frac{16^2}{2} + 16

The value is r= 144 units

5 0
3 years ago
Other questions:
  • 1.Which number is prime?<br><br><br> a,37<br><br> b,35<br><br> c,38<br><br> d,36
    12·1 answer
  • A corporation must appoint a​ president, chief executive officer​ (CEO), chief operating officer​ (COO), and chief financi
    15·1 answer
  • sharon is 54 inches tall. A tree in her backyard is 5 times as tall as she is. The floor of her treehouse is at a height that is
    10·2 answers
  • SOMEONE PLEASE HELP ME ASAP PLEASE!!! ​
    5·1 answer
  • PLEASE HELP ME ITS URGENT
    5·1 answer
  • Malik has two pencils. He has four blue pencils and 2 red pencils. What is the radio of red pencils and blue pencils?
    6·2 answers
  • Jacinto está cercando un terreno de forma rectangular. Cuando lleva puesto alambre a dos lados consecutivos de la tierra, se da
    5·1 answer
  • TriangleACB~triangleEFD
    14·1 answer
  • A carpet salesman sold 5,000 yards of carpet in one month at an average of $3 per yard. His commission was 16%. How much money d
    5·1 answer
  • david is ordering a photo book for his mom. The cost for a 7" x 9" book with 10 pages is 20$. Each additional page costs $1.50
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!