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ira [324]
3 years ago
6

= help me please thx so much have a good one

Mathematics
1 answer:
bezimeni [28]3 years ago
3 0

Answer:

2(2x + 5)(2x - 5)

Step-by-step explanation:

2(2x + 5)(2x - 5)

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

= 8x² - 20x + 20x - 50

= 8x² - 50

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Which of the following inequalities are true? Select all of the correct
Scorpion4ik [409]

477>80 is correct

-4.5<3 this one is also correct

8 0
3 years ago
Please urgent!!!!!!!!!!!!
Rus_ich [418]

Answer:

the last one

Step-by-step explanation:

6 0
2 years ago
Indicate whether the statement is true of false.
yawa3891 [41]

The statement is false, as the system can have no solutions or infinite solutions.

<h3>Is the statement true or false?</h3>

The statement says that a system of linear equations with 3 variables and 3 equations has one solution.

If the variables are x, y, and z, then the system can be written as:

a_1*x + b_1*y + c_1*z = d_1\\\\a_2*x + b_2*y + c_2*z = d_2\\\\a_3*x + b_3*y + c_3*z = d_3

Now, the statement is clearly false. Suppose that we have:

a_1 = a_2 = a_3\\b_1 = b_2 = b_3\\c_1 = c_2 = c_3\\\\d_1 \neq d_2 \neq  d_3

Then we have 3 parallel equations. Parallel equations never do intercept, then this system has no solutions.

Then there are systems of 3 variables with 3 equations where there are no solutions, so the statement is false.

If you want to learn more about systems of equations:

brainly.com/question/13729904

#SPJ1

3 0
2 years ago
A jeweler had a fixed amount of gold to make bracelets and necklaces. The amount of gold in each bracelet is 7 grams and the amo
OlgaM077 [116]

Answer:

3 necklaces and 12 bracelets

Step-by-step explanation:

Bracelets = x +4

amount of necklace gold  =   20*x

amount of gold in bracelet = 7*(x+4)    

added together = 109 gm

 20x    +  7(x+4)     =    109    

20x + 7x+28 = 109

27x+28=109

-28        -28

27x= 81

/27   /27

x=3 necklaces

then bracelets = 3+4=12

6 0
3 years ago
A cylindrical tank is filled with 66.85 mm3 of fuel. The area of the base of the cylinder is 15 mm2. What is the height of the f
Rashid [163]
Volume = (Area of the base)x(Height)
66.85 = 15(H)
66.85/15 = H
H = 4.4567

The height is 4.4567mm.
3 0
3 years ago
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