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Oksanka [162]
3 years ago
6

a test has 40 questions. denise finished 2/5 of the questions in the first 10 minutes and 1/2 of the remaining questions in the

next 15 minutes. how many questions had denise answered after 25 minutes?
Mathematics
1 answer:
timofeeve [1]3 years ago
3 0
That would be 28 questions. Hope I helped!
You might be interested in
The width of a rectangle is x. Its length is 3x. How long is the diagonal of the rectangle? Express your answer in simplified ra
nikklg [1K]

Answer:

The length of the diagonal is x√10

Step-by-step explanation:

Here, we want to find the length of the diagonal

The diagonal will represent the hypotenuse of a triangle formed with the width and length of the triangle being the measure of the other sides

Mathematically, we then apply Pythagoras’ theorem to get this

we have this as that the square of the diagonal equals the sum of the squares of the two other sides

d^2 = x^2 + (3x)^2

d^2 = x^2 + 9x^2

d^2 = 10x^2

d = √(10x^2)

d = x√10

7 0
3 years ago
A die is rolled. The set of equally likely outcomes is {1, 2, 3, 4, 5, 6}. Find the probability of getting a 9.
mrs_skeptik [129]

Answer:

you are only rolling 1 dice the probability of getting 9 is 0 there are only 6 sides to one die

8 0
2 years ago
What is the solution to this system of linear equations?<br><br> x + y = 4<br><br> x − y = 6
Amiraneli [1.4K]
X+y = 4, therefore y = 4-x when you rearrange the equation.
You can subsitute this in: x-(4-x) = 6
-4+x = 6-x
x=10-x
2x = 10
x = 5
Substitute x into the previous equation:
5+y = 4
y = 4-5
y = -1
5 0
3 years ago
Read 2 more answers
I need help please!!!!
Luba_88 [7]
The first two is wrong, the last two is one of the right ones, I think it’s c
3 0
3 years ago
5 ÷ x for x = 1/3 solve
WARRIOR [948]
So if x is equal to 1/3, then our equation would be 5/(1/3). When dividing by a fraction, you can multiply by the reciprocal to find the answer, meaning that if you divide by 1/3, you can multiply by 3/1. So your answer would be 15.
5/(1/3)=x
5*3=x
15=x

6 0
3 years ago
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