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
ser-zykov [4K]
3 years ago
13

Maria's math test had 25 questions. she got 84% correct. how many problems did she get wrong?

Mathematics
1 answer:
disa [49]3 years ago
4 0
84% of 25 is

0.84 * 25 = 21

this means maria got 21 questions correct

25-21 = 4
and 4 questions wrong
You might be interested in
What is -12x-5(-8)=40​
ololo11 [35]

Answer: 0

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
What two numbers multiply to 54 and add up to 7
k0ka [10]
Xy = 54
x + y = 7

xy = 54
\frac{xy}{x} = \frac{54}{x}
y = \frac{54}{x}

x + y = 7
x + \frac{54}{x} = 7
\frac{x^{2}}{x} + \frac{54}{x} = 7
\frac{x^{2} + 54}{x} = 7
x^{2} + 54 = 7x
x^{2} - 7x + 54 = 0
x = \frac{-(-7) \± \sqrt{(-7)^{2} - 4(1)(54)}}{2(1)}
x = \frac{7 \± \sqrt{49 - 216}}{2}
x = \frac{7 \± \sqrt{-167}}{2}
x = \frac{7 \± i\sqrt{167}}{2}
x = \frac{7 \± 12.9i}{2}
x = 3.5 \± 6.45i
x = 3.5 + 6.45i    or    3.5 - 6.45i

                  x + y = 7
   3.5 + 6.45i + y = 7
- (3.5 + 6.45i)       - (3.5 + 6.45i)
                        y = 3.5 - 6.45i
                  (x, y) = (3.5 + 6.45i, (3.5 - 6.45i)

                          or

                  x + y = 7
   3.5 - 6.45i + y = 7
- (3.5 - 6.45i)     - (3.5 - 6.45i)
                       y = 3.5 + 6.45i
                 (x, y) = (3.5 - 6.45i, 3.5 + 6.45i)

The two numbers that add up to 7 and can multiply to 54 is 3.5 ± 6.45i.
5 0
3 years ago
A tracksuit top costs £12.75 and matching tracksuit bottoms cost £9.50, how much does the tracksuit cost altogether?
andrey2020 [161]

Step-by-step explanation:

£22.25 pls mark brainliest thanks

5 0
3 years ago
B<br>Find all the missing angles - a,b,c, and d​
mart [117]

a=65° d=75° b=25° c=25°

4 0
2 years ago
Read 2 more answers
Select the correct answer.
yuradex [85]

Answer:

A

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Other questions:
  • Identify the common external tangent
    12·2 answers
  • PLZ HELP ASAP SOLID GEOMETRY
    11·1 answer
  • What is 4 2/3 - 1 3/4?
    15·2 answers
  • Can you guys please help me with questions 1-12 I’ll appreciate it and if you do help me can you SHOW YOUR WORK please.
    14·1 answer
  • Identify the vertex of y = x2 + 4x + 5.
    10·2 answers
  • True or false? Causation statement The more you pay for a house makes you spend more for a car
    14·1 answer
  • A cube has a surface area of 294 square cm. Find the length of one side.
    7·1 answer
  • (PART A PART B) PLEASE HELP!!! DUE TODAY!!!! ❤️
    10·1 answer
  • Solve For X. Please add an explanation.
    11·1 answer
  • A shoe store bought a pair of shoes for $50, and sold it for $80. What percentage was the mark-up?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!