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
Olenka [21]
3 years ago
14

Samantha answered 90% of the questions on her math test and 80 % of the questions on her history test correctly. If each test ha

d 50 questions , how many questions in all did she answer correctly ?
Mathematics
2 answers:
uranmaximum [27]3 years ago
4 0

Answer:

Samantha got 85 questions right.

Step-by-step explanation:

90% of 50 is 45.

80% of 50 is 40.

40 + 45 = 85

:)

ICE Princess25 [194]3 years ago
3 0

Answer:

95

Step-by-step explanation:

Im pretty sure It's 95 because if you get a 90% on a test with 50 questions, you would've gotten 45 correct. If you get an 80% on a test with 50 questions, you would've gotten 40 correct. Then add them.

You might be interested in
You know that
spayn [35]
So remember that percent means parts out of 100 so
52%=52/100=0.52

26%=26/100=0.26
'of' means multily

0.52 times x=65
divide both sides by 00.52
x=125




26% of a number is 39
0.26 times y=39
divide both sides by 0.26
y=150


x=125
y=150
y is greater


you know that becuase we know that 52% is exatly twice of 26% so therefor, if x=y then 52% of x is half of 26% of y so to compare them, we just divide the 65 number by 2 to find 26% of that number to get 65/2=32.5
32.5<39 so x is smaller number
7 0
3 years ago
The contour plot of is shown below. determine if the given quantity in each part is positive, negative, or zero.
Reptile [31]
There is no contour plot shown below.
7 0
4 years ago
Suppose that Sin(θ)=5/13 and cos(θ)=-12/13. Find the value of tan(θ), cot (θ), CSC (θ), and sec (θ). Find the value of tan(2θ)
horrorfan [7]

Answer:

Because θ lies in quadrant II, 2θ must lie in quadrant IV. This means the tangent of 2θ is negative.

The adjacent side to θ is 7 because √(25²-24²)=7, so tanθ=7/24.

The double angle formula for tangent is tan 2θ = (2 tan θ) / (1 − tan² θ).

Substituting the value for tanθ in and keeping in mind that this is in quadrant IV, we get tan 2θ = -(2(7/24)/(1-(7/24)²)).  

Simplified, this becomes tan 2θ = -336/527.  

Therefore, the answer is C. -336/527.

5 0
3 years ago
Question D- If the area of a square is 121 square centimeters, what is its side length?
Ipatiy [6.2K]
The formula for the area of a square is the side squared, or multiplied together.

Basically, if the side length is x, the area is x*x or x^2.

We can use that to set up an equation.

x^2=121
x=square root of 121=11

Hope this helps!
3 0
3 years ago
Solve the inequality showing all steps needed to justify your answer. State your solution in interval notation
dybincka [34]
<span>Which two measures did the United States take to counter terrorism after the September 11 attacks?

</span>
5 0
4 years ago
Other questions:
  • Classify the soild figure
    15·1 answer
  • Three thousand dollars are invested in an account paying 6% interest, and half that amount is invested at 4%
    15·1 answer
  • General solution of equation sin x + sin 5x = sin 2x + sin 4x is
    12·1 answer
  • A survey found that 39% of the population owned dogs, 22% owned
    7·2 answers
  • Factor each of the following using differences of squares
    5·2 answers
  • Please help..........
    7·2 answers
  • Please help! Correct Answers only!
    5·1 answer
  • 1. The first bus stop on a bus route is 4 miles from school. How many yards is the first bus stop from school? A) 12 yards B) 17
    6·2 answers
  • Don't know this please help me
    7·1 answer
  • What is the answer of this? 4x²-9y²+36y-36=0 ​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!