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
N76 [4]
3 years ago
14

Sally got 22 questions wrong on her quiz that had 40 questions on it. What is the percentage of the questions she got wrong?

Mathematics
1 answer:
nadezda [96]3 years ago
7 0
First, we have to calculate the percentage that Sally got in the quiz: 22/40x100%=55%
The percentage of the questions she got wrong: 100%-55%=45%
You might be interested in
Bryce ran a race that was 2.5 miles long. How long was the race, in feet? Round your answer to the nearest hundred. A. 2,100 ft
Anna [14]
13200  it is d bud hope this helps u 
3 0
3 years ago
Read 2 more answers
The sum of three consecutive terms in an arithmetic sequence is 27, and their product is 585. find the three terms.
sammy [17]
\text{the three consecutive terms in an arithmetic sequence}\\a;\ a+d;\ a+2d\\\\\text{system of equals}\\\\ \left\{\begin{array}{ccc}a+a+d+a+2d=27\\a(a+d)(a+2d)=585\end{array}\right\\ \left\{\begin{array}{ccc}3a+3d=27&|:3\\a(a+d)(a+2d)=585\end{array}\right\\ \left\{\begin{array}{ccc}a+d=9&\to d=9-a\\a(a+d)(a+2d)=585\end{array}\right\\
\text{substitute to the second equation}\\\\a(a+9-a)(a+2(9-a))=585\\\\a(9)(a+18-2a)=585\\9a(18-a)=585\ \ \ |:9\\a(18-a)=65\\18a-a^2=65\ \ \ |\text{change the signs}\\a^2-18a=-65\\a^2-2a\cdot9=-65\ \ \ |+9^2\\\underbrace{a^2-2a\cdot9+9^2}_{(a-b)^2=a^2-2ab+b^2}=-65+9^2\\(a-9)^2=16\to a-9\pm\sqrt{16}\\a-9=-4\ \vee\ a-9=4\ \ \ |+9\\a=5\ \vee\ a=13\\\\d=9-5=4\ \vee\ d=9-13=-4
Answer:\ a=5;\ a+d=9; a+2d=13\ vee\ a=13;\ a+d=9;\ a+2d=5

5 0
3 years ago
) a 200 gallon tank initially contains 50 gallons in which are dissolved 5 pounds of salt. the tank is flushed by pumping pure w
bulgar [2K]
(a) The 150 gallons of empty space in the tank are being filled at the rate of 1 gallon per minute. The tank will be filled after 150 minutes.

(b) s(0) = 5
.. s'(t) = -2s(t)/(50 +t)
6 0
3 years ago
I need to be walked through this please.
Aleksandr [31]
Https://us-static.z-dn.net/files/dd1/572d05be5373c1dc9c067ca6690a41a1.jpeg

3 0
4 years ago
There is a bag with only milk and dark chocolates. The probability of randomly choosing a dark chocolate is 5 12 . There are 40
Maksim231197 [3]

Answer:

There must be 96 milk chocolates.

Step-by-step explanation:

If you take the original ratio, 5:12, and replace the 5 with 40, you'd discover that 40 divided by 5 is 8. So what do you do? You multiply the 12 by 8 to get 96 so now the ratio is 40:96.

5 0
3 years ago
Other questions:
  • In a 3-digit number, the hundreds digit is four more than the ones digit and the tens digit is twice the hundreds digit. If the
    7·1 answer
  • A mass of 3.25 kg is attached to the end of a spring that is stretched 22 cm by a force of 15 N. It is set in motion with an ini
    8·1 answer
  • Find the value of each trigonometric ratio
    14·1 answer
  • Which is the least number which is divided by 6,9,12 and leaves remainder 4 in each case.​
    12·1 answer
  • The points (8,18) and (24,54) form a proportional relationship. Find the slope of the line through the
    12·2 answers
  • Can someone help me please
    5·1 answer
  • Describe in words the rule to calculate the area of a rhombus based on its<br> diagonals.
    5·1 answer
  • What is the greatest common factor of 10, 30 and 45
    8·1 answer
  • Write a sum in standard form.<br><br> A) h(x)+k(x)
    6·1 answer
  • How do you know if a net will fold into a pyramid?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!