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zubka84 [21]
3 years ago
9

Complete the equation so that it has solutions of –5 and 7 x2 + __ x +__ = 0

Mathematics
2 answers:
Mkey [24]3 years ago
5 0

Step-by-step explanation:

{x}^{2}  + ( - 5 + 7)x + ( - 5) \times 7 = 0 \\  {x}^{2}  + 2x - 35 = 0

Katarina [22]3 years ago
4 0

Answer:

-2x, -35

x2 +   -2x +  -35 = 0

Step-by-step explanation:

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The expression 7+3x+4 represents the perimeter of the triangle. Simplify the expression.
anyanavicka [17]

Answer:

-3.6

Step-by-step explanation:

Simplifying

7 + 3x + 4 = 0

Reorder the terms:

7 + 4 + 3x = 0

Combine like terms: 7 + 4 = 11

11 + 3x = 0

Solving

11 + 3x = 0

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-11' to each side of the equation.

11 + -11 + 3x = 0 + -11

Combine like terms: 11 + -11 = 0

0 + 3x = 0 + -11

3x = 0 + -11

Combine like terms: 0 + -11 = -11

3x = -11

Divide each side by '3'.

x = -3.666666667

Simplifying

x = -3.666666667

4 0
3 years ago
Jessica needs to make a necklace for 3 of her friends, including her. she wants to use 4.5 inches of string for each necklace. s
hoa [83]

Answer:

She can make two necklaces with 10 inches. 8 more inches

Step-by-step explanation:


5 0
3 years ago
Read 2 more answers
Gary learned that the value of his car depreciates by 15% percent per year. Which of the following functions best describes the
Sever21 [200]
For this case we have that the original value of the car is:
 m dollars
 For the following year we have the value is:
 ((100-15) / (100)) m
 Rewriting we have:
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 0.85m
 Answer:
 
the value of his car the year after the car is worth m dollars is:
 
B.f (m) = 0.85m
5 0
3 years ago
Which graph represents this system?<br><br> y=1/2x+3 <br> y=3/2x-1
Zigmanuir [339]
It’s neither of the graphs that are showed in the photo

7 0
3 years ago
What is the value of a+b?
MissTica

Answer:

125

Step-by-step explanation:

a =  \frac{1}{2}  \times 90 \degree \\  \\ a = 45 \degree \\  \\ b =\frac{1}{2} (360\degree - 200\degree) \\  \\ b = 80\degree \\  \\ a + b = 45 + 80 \\  \\ a + b = 125 \degree

6 0
3 years ago
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