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scoundrel [369]
3 years ago
6

Evaluate the expression below: n +n + n for n = -1 Ez points for anyone

Mathematics
2 answers:
Andreas93 [3]3 years ago
6 0

Answer:

-3

Step-by-step explanation:

  1. Plug -1 in: -1^{2} + -1^{2} + -1^{2}  
  2. Simplify: -1 + -1 + -1
  3. Simplify: -1 - 1 - 1
  4. -1 - 1 - 1 = -3

I hope this helps!

Vikentia [17]3 years ago
6 0

Answer:

3

Step-by-step explanation:

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A baseball team has 13 players; how many possible batting orders can the coach make if there are 9 players in the batting lineup
mote1985 [20]
The answer to this question would be: <span>C. 259,459,200 
</span>To answer this question, you will need to understand how to use permutation in probability. In this question, there will be 9 people out of 13 people that make an order for batting. In this case, if same people used but the batting order is different that could be considered different ways. Then the answer would be: P(13,9)= 13! / (13-9)!= 13!/4!= <span>259,459,200 </span>
4 0
3 years ago
Read 2 more answers
A construction crew is lengthening a road that originally measured 47 miles. The crew is adding one mile to the road each day. L
Dmitry_Shevchenko [17]

Answer:

78 miles

Step-by-step explanation:

Given that:

Original length, L = 47 miles

Additional length (miles) added per day, = 1 mile

Representing as an equation :

L(D) = original length + additional length per day * number of days

Let, D = number of days

L(D) = 47 + D

Length after 31 days :

L(31) = 47 + 31

= 78 miles

3 0
3 years ago
the frame of a picture is 28 cm by 32 cm outside and is of uniform width.What is the width of the frame if 192 cm2 of the pictur
natita [175]

Answer:

The width of the frame is equal to 8\ cm  

Step-by-step explanation:

Let

x-------> the width of the frame picture

we know that

(28-2x)(32-2x)=192    

896-56x-64x+4x^{2} =192

4x^{2}-120x+704=0  

Simplify

x^{2}-30x+176=0

The formula to solve a quadratic equation of the form ax^{2} +bx+c=0 is equal to

x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}

in this problem we have

x^{2}-30x+176=0

so

a=1\\b=-30\\c=176

substitute in the formula

x=\frac{30(+/-)\sqrt{(-30)^{2}-4(1)(176)}} {2(1)}

x=\frac{30(+/-)\sqrt{196}} {2}

x=\frac{30(+/-)14} {2}

x=\frac{30+14} {2}=22\ cm  ----> this solution is not logic

x=\frac{30-14} {2}=8\ cm  

The width of the frame is equal to 8\ cm  

8 0
3 years ago
Please help! It’s late! (One question)
SVETLANKA909090 [29]
Answer: Both

Explanation: The triangles all have corresponding congruent angles. We can tell this by finding the third angle of the original problem: 96.

Then you can read each triangle by what it states. Angle A is congruent to the corresponding angles in the other triangles, which are Q and T. Angle B is congruent to the corresponding angles in the other triangles, which are R and U. Angle C is congruent to the corresponding angles in the other triangles, which are S and V.

We know heard similar since they have congruent angle measures in corresponding spots.
3 0
3 years ago
Question 4(Multiple Choice Worth 4 points)
artcher [175]

Answer:

\sqrt{1}

Step-by-step explanation:

We know that a rational number cannot have roots. All of the answer choices cannot be simplified except for \sqrt{1}, which can become 1. Therefore, our answer is \sqrt{1}.

3 0
2 years ago
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