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3 years ago

Which of the following equations has one real solution?

Mathematics

1 answer:

erastovalidia [21]3 years ago

4 0

Answer:

4x2−12x+9=0

Step-by-step explanation:

The equation, 2x2+x+3=0, does not have a solution

The equation, x2+5x−3=0, equals -5/2+1/2√37 and -5/2+-1/2√37

The equation, x2−5x+4=0, equal 1 and 4

The equation, 4x2−12x+9=0, equals only 3/2

Hope this Helps

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Negative plus positive=?

grin007 [14]

If you are adding a positive number to negative number. You are just bringing the negative number closer to zero, if not above zero.
Examples:
-1+1=0
-2+1=-1
-3+1=-2
-4+1=-3

7 0

3 years ago

Nathan is buying a cell phone for his business. The regular price of the cell phone is $179. If he buys the phone in the next 2

m_a_m_a [10]

20% off
100-20=80

find 80% of 179

percent mean psarts ouf o 100
80%=80/100=0.8

'of' means mutipy

80% of 179=
0.8*179=143.2

saleprice=$143.20

4 0

3 years ago

Read 2 more answers

Hans bought 3 CDs that were each the same price. Including sales tax, he paid a total of $53.40. Of that total, $3.60 was tax. W

Jet001 [13]

Answer:

$16.6

Step-by-step explanation:

x is the price of each CD before tax

so 3x + 3.60 = 53.40

3x = 53.40 - 3.60 = 49.80

x = 49.80/3 = 16.6

3 0

3 years ago

What is the area of this figure? 7 km 6 km 12 km 4 km 4 km 5 km 3 km 3 km

aleksandrvk [35]

Answer:

105.5664, or 93 + 4 pi

Step-by-step explanation:

84 + 9 + 4 pi

equals 105.5664, or 93 + 4 pi

Break the shape into common shapes.

12 times 7 (rectangle) = 84

3 times 3 (square) = 9

7 0

3 years ago

What is the solution to the equation?

ki77a [65]

Answer:

Step-by-step explanation:

$3 {(x + 9)}^{ \frac{3}{4} } = 24 \\ \\ {(x + 9)}^{ \frac{3}{4} } = \frac{24}{3} \\ \\ {(x + 9)}^{ \frac{3}{4} } = 8 \\ \\ {(x + 9)}^{ \frac{3}{4} } = {2}^{3} \\ \\ (x + 9) = {2}^{3 \times \frac{4}{3} } \\ \\ x + 9 = {2}^{4} \\ \\ x + 9 = 16 \\ \\ x = 16 - 9 \\ \\ x = 7$

7 0

3 years ago