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2 years ago

Using the quadratic formula to solve x2 = 5 – x, what are the values of x?

Mathematics

1 answer:

Ivenika [448]2 years ago

4 0

Answer:

x²=5-x

x²+x-5=0

1x²+1x²-5=0

[ax²+bx²+c=0]

∆=b²-4ac

∆=1²-4(-5)(1)=1+20=21

x=(-b±√∆)/2a

x=(-1±√21)/2

meaning:

x=(-1+√21)/2 or x=(-1-√21)/2

You might be interested in

The larger of two numbers exceeds twice the smaller by one. Three times the smaller exceeds the larger by six. If y is the large

mestny [16]

Step-by-step explanation:

larger number = y

smaller number=x

y>2x+1

y<3x+6

Probably the first one, if I did this right.

To do this problem, you need to know how to read math, literally. The problem says that y is the larger number, so assume the smaller is x. So, y exceeds 2x by 1 (so, y>2x+1). then, it says 3x exceeds y by 6; therefore, 3x+6>y. I may have interpreted it wrong, though, so tell me if I made a mistake :))

Answer:

first one

6 0

3 years ago

Help plz i’ll give extra points

GarryVolchara [31]

Answer:

6 sets

Step-by-step explanation:

1/9=0.11 rounded

1/3=0.33 rounded

6.11x3=18.33

3.33x3=9.99

18.33+9.99=28.32

7 0

3 years ago

Suppose you want to buy a great pair of designer jeans that were originally priced at $95, but are now on sale for 10% off. When

77julia77 [94]

Answer:

$94.05

Step-by-step explanation:

Original price of jeans=$95

Discount=10%

New price=(100% - 10%) of $95

=90% × 95

=90/100 × 95

=0.9 × 95

=$85.5

Sales tax of 10%

10% of the new price

=10/100 × 85.5

=0.1 × 85.5

=$8.55

Sales tax =$8.55

Total amount paid for the jeans= sales tax + new tax

=$8.55 + $85.5

=$94.05

5 0

4 years ago

What number is 8% of 1,500?

Dima020 [189]

Answer:

120

Step-by-step explanation:

Solution for What is 8 percent of 1500:

8 percent *1500 =

(8:100)*1500 =

(8*1500):100 =

12000:100 = 120

Now we have: 8 percent of 1500 = 120

Question: What is 8 percent of 1500?

Percentage solution with steps:

Step 1: Our output value is 1500.

Step 2: We represent the unknown value with x.

Step 3: From step 1 above, 1500 = 100%

Step 4: Similarly, x = 8%

Step 5: This results in a pair of simple equations:

1500 = 100% (1).

x = 8% (2)

Step 6: By dividing equation 1 by equation 2 and noting that both the RHS (right hand side) of both

equations have the same unit (%); we have

1500 = 100%

x 8%

Step 7: Again, the reciprocal of both sides gives

x = 8

1500 100

x = 120

Therefore, 8% of 1500 is 120

Hope this helps you!!!

Please mark as Brainliest

7 0

3 years ago

The angle ____ is the smallest positive coterminal angle with 915 degrees

olga55 [171]

Step-by-step explanation:

We can find the coterminal angle by simply adding or subtracting 360° to each angle. In this problem, we need to find the smallest positive coterminal angle with 915 degrees.

It can be calculated by adding or subtracting 360° to the given angle. For positive coterminal angle subtract 360° from 915°

915-360 = 555

555-360 = 195

The positive coterminal angles: 195°, 555°, 915°, 1275°, 1635°...

The negative coterminal angles: -165°, -525°, -885°, -1245°...

Hence, the angle 195° is the smallest positive coterminal angle with 915 degrees

8 0

3 years ago