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Annette [7]
3 years ago
9

In a contest each finalist must answer 5 questions correctly .Each question is worth twice as much as the question before it. Th

e fifth question is worth $1,600. How much is the first question worth
A. $800 B.$400. C.$200. D. $100
Mathematics
1 answer:
lilavasa [31]3 years ago
3 0
A $800 because 8+8=16 soo 800+800=1,600
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If f(x)= x/2-3 and g(x)=4x^2+x-4 find (f+g) (x)
svet-max [94.6K]

Answer:

(f+g) (x)=4x^2+3x/2-7

Step-by-step explanation:

f(x)= x/2-3 and g(x)=4x^2+x-4

(f+g) (x)=?

(f+g) (x)=f(x)+g(x)

(f+g) (x)=x/2-3+4x^2+x-4

combining like terms

(f+g) (x)=4x^2+x/2+x-3-4

(f+g) (x)=4x^2+3x/2-7

hope it helps. Brainliest please

6 0
4 years ago
How do you determine whether to use substitution or elimination. give an example of a system that you would solve using each met
nadezda [96]
You determine which one to use by seeing which one would be easier

elimination: 5x + 7y = 2
                  -5x + 6y = 6

substitution: y = 9x + 5
                  2y = 7x + 2
3 0
3 years ago
The sum of the squares of two consecutive positive even integers is 100. find the two integers
liraira [26]
The integers are 6 and 8
6^2= 36
8^2=64
36+64=100
3 0
3 years ago
R^2+7r+10/3 / 3-30/r2-5r-50
kvasek [131]
Multiply r^2+7r+10/3 by 3r-30/r^2-5r-50 
<span>=( r^2+7r+10)/3 (3r-30)/(r^2-5r-50) </span>
<span>=(r+2)(r+5)/3 3(r+10)/ (r-10)(r+5) </span>
<span>=3 (r+2)(r+5)(r+10)/3(r-10)(r+5) </span>
<span>=(r+2)(r+10)/(r-10)</span>
8 0
3 years ago
Read 2 more answers
Given: 1 and 2 are supplements, and 3 and 2 are supplements.
Ronch [10]

The <em><u>correct answers</u></em> are:

Supplementary; ∠2 and ∠3; substitution; 2.

Explanation:

Supplementary angles are angles whose measures sum to 180°.  Thus this is the first answer.  

Since we are told that ∠2 and ∠3 are supplementary, their measures sum to 180° and they are the second answer.

We know that m∠1 + m∠2 = 180° and m∠2 + m∠3 = 180°.  We can substitute "m∠2 + m∠3" for 180° in the first equation; this is the substitution property.

To isolate m∠1 on the right, we will subtract m∠2 from each side, and get that m∠1 = m∠3 and the angles are congruent.


5 0
3 years ago
Read 2 more answers
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