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seraphim [82]
3 years ago
10

3) 92 students were surveyed about their elective classes for the first semester. The

Mathematics
1 answer:
vredina [299]3 years ago
8 0

Answer:

I believe that the answer is that 13 students don't take any of the three classes.

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Find the value of x. If necessary, round your answer to the nearest tenth. The figures are not drawn to scale.
Veseljchak [2.6K]
10•24=240
240=9•x
240=9x
240/9=x
x=26 2/3
6 0
2 years ago
Solve the system of equations<br> X=11+y<br> 2x+y=19
raketka [301]

Answer:

Step-by-step explanation:

To solve this system of equations, let's first find the value <em>y</em>. We can replace the x in the second equation with 11 + y, since we are told in the <em>first</em> equation that x is equal to 11 + y. So, let's replace x:

2(11 + y) + y = 19

22 + 2y + y = 19

22 + 3y = 19

3y = -3

y = -1

And look at that - we've found our y-value! Now, we can replace the y in the <em>first</em> equation with -1 to find the value of x.

x = 11 + (-1)

x = 10

So, the solution to this system of equations is (10, -1). Hopefully that's helpful!

6 0
2 years ago
Read 2 more answers
Tanya wants to find the height of the tree. She walks away from the base of the tree so the tip of her shadow coincides with the
shtirl [24]
Refer to the diagram attached.

TRIANGLE ABC
The height of the tree is the segment AB. The shadow of the tree is BC.

TRIANGLE DEC
Tanya's height is 5 feet 3 inches (since there are 12 inches in one foot that is (5)(12)+3 = 63 inches).
Tanya's shadow is EC

Since both triangles are right triangles (the both have a right angle) and they share the angle at C, they are similar triangles. That means that their corresponding angles are congruent and their corresponding sides are in proportion.

We can set up the following proportion:
(tree height / tree shadow) = (Tanya's height / Tanya's shadow)

BE is 2.5 times EC. This means that BE is (2.5)(EC). It also means that BC = 2.5EC + EC = 3.5EC

The shadow of the tree is 3.5 times Tanya's shadow. That means that the height of the tree must be 3.5 times Tanya's height.

The height of the tree is (3.5)(63) = 220.5 inches. If we divide this by 12 we get 18.375 which means 18 feet and some inches.  (18)(12)=216 and the tree is 220.5. That means the tree is 18 feet and 4.5 inches.

4 0
2 years ago
Need help plzzzzz need it
Deffense [45]

Answer:

  • 1/4

Step-by-step explanation:

<u>From the graph we can get the intercepts:</u>

  • The y-intercept (0, - 1)
  • The x-intercept (4, 0)

<u>The rate of change (slope) is:</u>

  • m = (0 - (-1)) / 4 = 1/4
8 0
1 year ago
Use the graph. Which equation is true from the information in the graph?
borishaifa [10]
Answer: A

because: I believe that the right answer not sure
5 0
2 years ago
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