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Sati [7]
2 years ago
14

How many solutions are there to the equation below?

Mathematics
1 answer:
romanna [79]2 years ago
3 0
Answer : c
Explanation:
4(x-5)=3x+7
4x-20=3x+7
4x-3x=7+20
x=27
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PLEASE HELP 2 QUESTIONS 45 POINTS!!!!!!!!!
Effectus [21]

Answer:

1. -8x² - 16x - 6      a = -8, b = -16, c = -6

1. 4x² - 1                  a = 4, b = 0, c = -1

Step-by-step explanation:

use the 'foil' method:

(4x + 2)(-2x - 3)

F: -8x²     O: -12x       I: -4x       L: -6

-8x² - 16x - 6

(2x + 1)(2x - 1)

F: 4x²     O: -2x       I: 2x       L: -1

4x² - 1

5 0
2 years ago
I need help I have this problem and I think it either has to be simplified or turned into a fraction but I’m really sure it’s si
Olenka [21]
What are you specifially looking for? simplified it would be 10 and as a fraction 10 over 1
6 0
3 years ago
Wegnerkolmp or someone who can explain maths please<br> I need a proper explanation
umka2103 [35]

Answer: 66 degrees

Explanation:

Check out the attached image below. Figure 1 is the original image without any additions or alterations. Then in figure 2, I extend segment BC to form a line going infinitely in both directions. This line crosses segment DE at point F as shown in the second figure.

Note how angles ABC and DFC are alternate interior angles. Because AB is parallel to DE (given by the arrow markers) this means angle DFC is also 24 degrees

Focus on triangle DFC. This is a right triangle. The 90 degree angle is at C.

So we know that the acute angles x and 24 are complementary. They add to 90. Solve for x

x+24 = 90

x+24-24 = 90-24

x = 66

That is why angle CDE is 66 degrees

6 0
3 years ago
A department store sells a pair of shoes with a 80% markup. If the store bought the pair of shoes for $55.25. Round the price to
AleksandrR [38]

Answer:

$31.00

Step-by-step explanation:

that is the procedure above

6 0
3 years ago
A. x=51, y=63<br>b. x=77, y=63<br>c x=63, y=77<br>d x=77, y=65
vekshin1
The answer is b. x=77, y=63
5 0
3 years ago
Read 2 more answers
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