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
sammy [17]
3 years ago
10

I have 30 question test and need 70% to pass how many questions can be wrong

Mathematics
1 answer:
alekssr [168]3 years ago
3 0
Total questions are 30.

70% of 30
=30(70/100)
=21

So, the questions can be wrong are 30-21.
=9 questions..

Thanks!
You might be interested in
Trigonometric identities assignment 4
kykrilka [37]

Answer:

<em>Answer: choice D.</em>

Step-by-step explanation:

<u>Trigonometric Functions</u>

We need to recall some properties and definitions of the trigonometric functions.

\displaystyle \tan \theta=\frac{\sin\theta}{\cos\theta}

\displaystyle \sec \theta=\frac{1}{\cos\theta}

We need to simplify the following expression:

5\sin\theta\sec\theta

Substituting the identity for the secant:

\displaystyle 5\sin\theta\sec\theta=5\sin\theta.\frac{1}{\cos\theta}

Operating:

\displaystyle 5\sin\theta\sec\theta=5\frac{\sin\theta}{\cos\theta}

Substituting the definition of the tangent:

\displaystyle 5\sin\theta\sec\theta=5\tan\theta

Correct choice D.

6 0
2 years ago
Find the value of each variable.<br> 105°<br> 86°<br> 106°/2°
forsale [732]

Answer:

z = 74 degrees

y = 115 degrees

Step-by-step explanation:

Explanation in the attachment.

5 0
2 years ago
A family has two cars. the first car has a fuel efficiency of 30 miles per gallon of gas and the second has a fuel efficiency of
jeka57 [31]
X : the gas used by first car in 1 particular week
y : the gas used by second car in 1 particular week
x + y = 60 \\ x = 60 - y
30x + 35y = 1975 \\ 30 \times (60 - y) + 35y = 1975 \\ ... \\ y = 35 \\ x = 60 - y = 60 - 35 = 25

5 0
3 years ago
If there are 30 boys and 50 girls in a room, fill out all of the possible ratios of boys to girls that could be made. They alrea
goldfiish [28.3K]

Answer:

3:5

60:100

90:150

120:200

15:25

150:250

180:300

210:350

7 0
3 years ago
Garrett can order stickers from two companies. Company A charges a $30 design fee plus $0.80 per sticker. Company B charges a $1
siniylev [52]

Answer:

Garrett can order stickers from two companies. Company A charges a $30 design fee plus $0.80 per sticker. Company B charges a $14 design fee plus $1.20 per sticker. How many stickers would Garrett have to order for the cost at both companies to be the same?

Step-by-step explanation:

i got it right

8 0
2 years ago
Other questions:
  • Walter is making a 300-mile trip from Wichita Falls, Texas to Austin, Texas. After the first 120 miles, he continues driving at
    13·2 answers
  • 8.96 is what percent of 112
    11·2 answers
  • What are all of the real solutions of the equation
    10·1 answer
  • What is the missing term?
    15·1 answer
  • The sum of the interior angles of Michael’s polygon equals 180°. The sum of the interior angles of Cary’s polygon equals 360°. H
    7·1 answer
  • Find the value x<br><img src="https://tex.z-dn.net/?f=3x%20%2B%2016%20%2B%208x%20%2B%203%20-%2010x%20-%2028" id="TexFormula1" ti
    5·2 answers
  • Nicole receives 40 likes in 25 minutes assuming that the relationship is proportional how many like would she receive in 45 minu
    8·1 answer
  • Si un proyectil asciende verticalmente, y después de 3 segundos alcanza su altura máxima, calcule la velocidad que lleva a la mi
    9·1 answer
  • The diagram shows a triangle.<br> 490<br> 880<br> What is the value of v?<br> V =
    7·2 answers
  • What are some state services?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!