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irina [24]
3 years ago
7

If 3 students averaged 68 on a test and 4 students averaged 75, what is the average of all 7 students

Mathematics
2 answers:
Andreas93 [3]3 years ago
8 0

Answer:  3 students

68 68 68

4 students

75 75 75 75

Answer: 71.5

insens350 [35]3 years ago
5 0

Answer:13

Step-by-step explanation:

i uave sjfjd

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Which explanation correctly tells whether these ratios are equivalent and why?
Reptile [31]
<h3><u>Answer:</u></h3>

<u>Option A (Yes because 3 x 2 = 6 and 14 x 2 = 28.) is correct.</u>

<h3><u>Step-by-step explanation:</u></h3>

<u>This is because if we simplify 3/6 and 14/28, both of them will get 1/2. This means that only A and C are possible.</u>

  • => Option A is correct because 3 x 2 does equal 6 and 14 x 2 does equal 28.
  • => Option C is incorrect because 3 x 5 does not equal 14 and 6 x 5 does not equal 28.

Hoped this helped.

BrainiacUser1357

6 0
3 years ago
I need to round 16,500 nearest thousand feet
Verizon [17]
17,000 feet is your answer
4 0
3 years ago
Read 2 more answers
BRAINILEST IF ANSWEED QUICKLY AND CORRECT
r-ruslan [8.4K]

Answer:

The answer is B.It is one-half the area of a square of side length 4 units.

Step-by-step explanation:

Given a coordinate grid shown with triangle of measurements with base 4 units and height also 4 units.

We have to find the area of triangle which can be calculated as

⇒  

                 =  

we have to choose the statement describes the area of the triangle evaluate above.

Option A: Not matched ∵equals to [area of rectangle of length 4 units width 2 units]=                                    

Option B: matched : given one-half the area of a square of side length 4 units.

⇒  

Option C : Not matched : It is twice the area of a rectangle of length 4 units and width 2 units

⇒

Option 4 : Not matched : It is twice the area of a square of side length 4 units.

⇒  

So, the correct option is B. It is one-half the area of a square of side length 4 units.

4 0
3 years ago
Read 2 more answers
What is the definition of evaluate? this is for a test please help​
Daniel [21]

Answer:

The definition of evaluate is to find a numerical expression or equivalent for - an equation, formula or function.

Step-by-step explanation:

6 0
4 years ago
Evaluate the indefinite integral. <br> integar x4/1 + x^10 dx
ivann1987 [24]

Answer:

\int\ {\frac{x^4}{1 + x^{10}}} \, dx = \frac{1}{5}( \arctan(x^5)) + c

Step-by-step explanation:

Given

\int\ {\frac{x^4}{1 + x^{10}}} \, dx

Required

Integrate

We have:

\int\ {\frac{x^4}{1 + x^{10}}} \, dx

Let

u = x^5

Differentiate

\frac{du}{dx} = 5x^4

Make dx the subject

dx = \frac{du}{5x^4}

So, we have:

\int\ {\frac{x^4}{1 + x^{10}}} \, dx

\int\ {\frac{x^4}{1 + x^{10}}} \, \frac{du}{5x^4}

\frac{1}{5} \int\ {\frac{1}{1 + x^{10}}} \, du

Express x^(10) as x^(5*2)

\frac{1}{5} \int\ {\frac{1}{1 + x^{5*2}}} \, du

Rewrite as:

\frac{1}{5} \int\ {\frac{1}{1 + x^{5)^2}}} \, du

Recall that: u = x^5

\frac{1}{5} \int\ {\frac{1}{1 + u^2}}} \, du

Integrate

\frac{1}{5} * \arctan(u) + c

Substitute: u = x^5

\frac{1}{5} * \arctan(x^5) + c

Hence:

\int\ {\frac{x^4}{1 + x^{10}}} \, dx = \frac{1}{5}( \arctan(x^5)) + c

7 0
3 years ago
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