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RSB [31]
3 years ago
7

7x + 1 by = 1/3 2x + 2y = 28

Mathematics
1 answer:
sweet-ann [11.9K]3 years ago
7 0
7x+1 = (1/3)
2x + 2y = 28

Systems of equations.
Solve equation with single variable first.
7x+1 = (1/3) , x = (-2/21)

Substitute the value of x in second equation and solve for y.
2(-2/21) + 2y = 28, y = (296/21)

I’m assuming that isn’t the correct answer because you wrote the first equation incorrectly.
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Nuetrik [128]
Hello there! The formula for finding slope is y2 - y1 / x2 - x1, meaning you subtract the first x and y-coordinates, from the second x and y-coordinates. In this case, the formula would be set up as -2 - 5 / 2 -1, because (2, -2) is the second point and (1, 5) is the first point. The answer is C: 2 - 1.
8 0
3 years ago
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Find the m < t rounded to the nearest degree
serg [7]

Answer:

28° (Answer A)

Step-by-step explanation:

Note that tan t = 8/15 = 0.533

Applying the inverse tangent function, we get

t = arctan 0.533 = 0.4900 radian

Mult. this by the radian-degree conversion factor results in:  28.072°

and when rounded off to the nearest degree, the measure of angle T is 28°  (Answer A)

5 0
3 years ago
What is the value of x in the proportion ​
siniylev [52]

Answer:

  5 2/5

Step-by-step explanation:

Multiply by (3 3/5)x/(1 1/2):

  x = (2 1/4)(3 3/5)/(1 1/2) = (9/4)(18/5)(2/3) =27/5

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4 0
2 years ago
17. x^2 + 2x + 1
valentina_108 [34]

Answer:

E. This polynomial could be factored by using grouping or the perfect squares methods.

Step-by-step explanation:

x^2 + 2x + 1

There is no greatest common factor

This is a perfect square

a^2 + 2ab+ b^2 = ( x+1)^2

We can factor this  by grouping

x^2 + 2x + 1

(x^2 +x) + (x+1)

x( x+1)  + x+1

Factor out x+1

( x+1)  ( x+1)

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5 0
3 years ago
Whatt is 5/10 times 4/6?
yanalaym [24]

Answer:

5/10×4/6=1/3

Solution with Steps

5/10×4/6=?
For fraction multiplication, multiply the numerators and then multiply the denominators to get

20/60

This fraction can be reduced by dividing both the numerator and denominator by the Greatest Common Factor of 20 and 60 using
GCF(20,60) = 20

(rest is in image)

HOPE THIS HELPED

3 0
2 years ago
Read 2 more answers
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