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Blizzard [7]
3 years ago
7

HELP PLEASEEEEE!!!!!!!!!

Mathematics
2 answers:
Sever21 [200]3 years ago
7 0
B 
Hope this helped :)

Citrus2011 [14]3 years ago
4 0
The answer is B.........
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Mr. rodriguez, a college instructor, can grade his class papers in 3 hours while it takes his assistant 4.5 hours. if mr. rodrig
NeTakaya

The rate of mr Rodriguez to complete 1 job is 1/3 while that of his assistant is 1/4.5.

So if mr Rodriguez works for 1 hour, the job left would be 2/3 of the job. So the total time needed by assistant is:

(2/3) / (1/4.5) = 3 hours

 

Answer:

<span>3 hours</span>

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4 years ago
Which triangle defined by three points on the coordinate plane is congruent with the triangle illustrated, and why?
jekas [21]
Check the picture below.

the "red" pair of sides are congruent, notice, both are 3 and 5 units in length respectively.

7 0
3 years ago
Read 2 more answers
F(x) = 4x – 10<br> g(x) = -8x2 + 6x – 10<br> Find: f(x) · g(x)
Lilit [14]

Answer: f(x) · g(x)=-32x³+104x²-100x+100

Step-by-step explanation:

Since we are given f(x) and g(x), all we have to do is multiply them together.

f(x) · g(x)=(4x-10)(-8x²+6x-10)                              [distribute by FOIL]

f(x) · g(x)=-32x³+24x²-40x+80x²-60x+100         [combine like terms]

f(x) · g(x)=-32x³+104x²-100x+100

Now, we have multiplied them together, we have f(x) · g(x)=-32x³+104x²-100x+100.

8 0
3 years ago
The following equation has denominators that contain variables. For this equation write the value or values of the variable that
jarptica [38.1K]

Answer:

X = 3/5

Step-by-step explanation:

2/x=4/5x+2

Find the LCM of the denominator 5x and 1

2/x =4/5x + 2/1

2/x = (4 + 10x)/5x

Cross multiply the equation

2× 5x = (4+ 10x) × x

10x = 4x + 10x^2

Collect like term of the mixed number

10x - 4x = 10x^2

6x = 10x^2

Divide both side by 2x

6x/2x = {10x^2 } / 2x

3 = 5x

Divide both side by the coefficient of x

3/5 = 5x/5

X = 3/5

7 0
4 years ago
Which equation and variable would be easiest to solve for in order to solve the system by substitution? y + x = 3 5x + 3y = -1
notsponge [240]

Answer:

Use y + x = 3 and solve for either x or y.

Step-by-step explanation:

Substitution is a method to solve a system of equations by substituting an expression from one equation into the other.

To begin, first solve one equation by isolating for one variable. Choose the equation which will have the least number of steps to do so.

y + x = 3 can be solve for x or y by subtracting the other variable. Since this only requires one step use this equation. Either variable can be used.

4 0
4 years ago
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