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sasho [114]
3 years ago
13

Twenty students in class A and 20 students in class B were asked how many hours they took to prepare for an exam.

Mathematics
1 answer:
d1i1m1o1n [39]3 years ago
6 0
The mean study time is less for class b then class a
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Which is the value of Y in the parallelogram below?
IrinaK [193]

Answer:

9

Step-by-step explanation:

Just like a rectangle, times one length times width

4 0
3 years ago
The number of hours, t, it takes a boat to travel 15 miles upstream is represented
iogann1982 [59]

The equation of c is an illustration of subject of formula

The equation of c in terms of r and t is c = r - 15/t

<h3>How to determine the equation?</h3>

The equation is given as:

t = 15/(r - c)

Cross multiply

t(r - c) = 15

Divide both sides by t

r - c = 15/t

Subtract r from both sides

-c = -r + 15/t

Multiply both sides by -1

c = r - 15/t

Take LCM

c = \frac{rt - 15}{t}

Hence, the equation of c in terms of r and t is c = \frac{rt - 15}{t}

Read more about subject of formula at:

brainly.com/question/10643782

8 0
2 years ago
What’s the largest fraction: 7/8, 5/8, 7/13, and 11/19
garik1379 [7]

Answer:

7/8

Step-by-step explanation:

7/8 = 0.875

5/8 = 0.625

7/13 = 0.538

11/19 = 0.579

So 7/8 is the largest

4 0
3 years ago
2. Use (&lt;, &gt;, =) to compare 23 and 34.
lara31 [8.8K]

Answer:

Step--step explanation:

2/3 = 0.67

3/4= 0.75

So 2/3 < 3/4

8 0
3 years ago
Read 2 more answers
If the area of the blue square is 144 units2 and the area of the pink square is 1225 units2, then the length of the hypotenuse i
navik [9.2K]

Answer: 37 units

Step-by-step explanation:

Blue=144units^2 This also works as the height of the triangle.

Pink=1225units^2 This also works as the base of the triangle.

Let's call pink ''a'', and blue ''b''. The side we're looking for ''c'' is the hypothenuse.

To find the values of a and b, use the area formula of a square and solve for a side. In this case, since we're going to need the squared values, this step can be omitted.

Formula: A=s^2

s=\sqrt[]{A}

Let's work with Blue.

s=\sqrt[]{144units^2} \\s=12units

Now Pink.

s=\sqrt[]{1225units^2}\\s=35units

So we have a triangle with a base of 35 units and a height of 12 units.

Now let's use the pythagoream's theorem to solve.

c^2=a^2+b^2\\c=\sqrt[]{a^2+b^2} \\c=\sqrt[]{(12units)^2+(35units)^2}\\c=\sqrt[]{144units^2+1225units^2}\\ c=\sqrt[]{1369units^2}\\ c=37units

7 0
3 years ago
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