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Burka [1]
3 years ago
7

PLEASE HELP ASAP!!! ):

Mathematics
1 answer:
stiv31 [10]3 years ago
4 0

9514 1404 393

Answer:

  see attached

Step-by-step explanation:

This is made slightly more difficult by the fact that the given polynomials are not in order of decreasing powers of x. So, you need to be careful what you're adding, to make sure the terms are "like".

__

Add: (-2x² +3x +4) +(x² -4x -5) = (-2+1)x² +(3-4)x +(4-5) = -x² -x -1

Opp: -(3x² -x +1) = 3x² +x -1

Sub: (x² +3x -4) -(-2x² +4x -3) = (1-(-2))x² +(3-4)x +(-4-(-3)) = 3x² -x -1

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Jimmy successfully factors a quadratic $4x^2 + bx + c$ as \[4x^2 + bx + c = (Ax + B)(Cx + D),\]where $A,$ $B,$ $C,$ and $D$ are
saul85 [17]

Answer:

±1, ±2, and ±4

Step-by-step explanation:

4x² + bx + c = (Ax + B) (Cx + D)

Distribute:

4x² + bx + c = ACx² + (AD + BC) x + BD

Matching the coefficients, AC = 4.  So A must be a factor of 4.  Possible values of A are therefore ±1, ±2, and ±4.

3 0
3 years ago
The shape has an area of 60 square inches. Find the value of x.
ahrayia [7]

Answer:

8 inches

Step-by-step explanation:

ROCK is a kite. The area of a kite is denoted by:

A = (1/2) * d1 * d2, where d1 and d2 are the diagonals

Here, the two diagonals are x and 15, and we know the area is 60, so plug these into the equation:

A = (1/2) * d1 * d2

A = (1/2) * 15 * x

60 = (1/2) * 15 * x

x = 120 / 15 = 8

Thus, x = 8 inches.

6 0
3 years ago
Read 2 more answers
A colour palette at a paint store has 6 shades of blue. Kelsie is choosing 2 shades of blue to paint her room. How many pairs of
Law Incorporation [45]

Answer:

B.) 15

Step-by-step explanation:

The order in which the shades are chosen is not important. For example, choosing powder then sky is the same outcome as choosing sky then powder. So we use the combinations formula to solve this question.

Combinations formula:

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

In this question:

2 shades from a set of 6. So

C_{6,2} = \frac{6!}{2!(6-2)!} = 15

So the correct answer is:

B.) 15

8 0
4 years ago
Helpppppppppppppppppp
vaieri [72.5K]
Hey there! :D

When there are two lines (parallel) that are cut by a transversal, corresponding angles form. These are angles that are in the same position on the same side. m<2 is corresponding to the angle that equals 38 degrees. They are congruent and have the same measure. 

m<2= 38 degrees 

Remember, this only works because the problem said that line L and M are parallel.

I hope this helps!
~kaikers
8 0
3 years ago
Each table at a restaurant has six chairs placed around it.
Romashka-Z-Leto [24]

Answer:

4/24

Choice B is correct

Step-by-step explanation:

From the information given, there is 1 table for every 6 chairs at the restaurant. In ratio form this can be expressed as;

1:6

The ratio that is equivalent to this given ratio is 4/24. This can easily be checked through simplification of this ratio;

4/24; If we divide both the numerator and the denominator by 4 we obtain

1/6 which is equivalent to 1:6

3 0
3 years ago
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