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ANEK [815]
3 years ago
8

Solve −3x2 + 30x − 90 = 0. x equals 5 plus or minus 2i square root of 5 x equals 5 plus or minus i square root of 5 x equals 10

plus or minus 2i square root of 5 x equals 10 plus or minus i square root of 5
Mathematics
2 answers:
Tcecarenko [31]3 years ago
5 0
The x in your equation is 16/5 or 3 1/5 or 3.2 if you want it simplified 
aliina [53]3 years ago
5 0

Answer:

x = 5 +/-<em> i</em> √5

(took the test just now)

Hope this helps !

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Kayla saves $110 to purchase a new outfit. She decides to but a skirt for $29.65, a sweater for $38.32, and a purse for $31.00
Blizzard [7]

Answer:

$98.97

Step-by-step explanation:

3 0
3 years ago
Calculate the average speed (tin km/hr) of charlie who run to the store 4 km away in 30 minutes
Galina-37 [17]

ANSWER

8km/hr

EXPLANATION

The average speed

=  \frac{distance}{time}

Distance=4km

Time=30mins

Convert time to hours.

Time =0.5hrs

The average speed

=  \frac{4}{0.5}

= 8km/hr

8 0
3 years ago
Veronica is choosing between two health clubs. After how many months will the total cost for each health club be the​ same? Yoga
sergiy2304 [10]

Answer:

14.02

Step-by-step explanation:

You'd have to write equations for the price per month for each club.

Let  x  equal the number of months of membership, and  y  equal the total cost.

Club A's is  y = 24x + 21.50 and Club B's is  y = 17.25 x + 41.00 Because we know that the prices,  y , would be equal, we can set the two equations equal to each other.

24x + 21.50 =17.25 x+ 41.00

subtract 21.50 both sides

. We can now solve for  x  by isolating the variable.

24x=17.25x+19.5

divide 17.25x

1.39x=19.5

divide 1.39 both sides

x=14.02

After five months, the total cost would be the same.

4 0
3 years ago
A right triangle has a leg that measures 15 ft and the hypotenuse measures 24 ft. What would the
Serhud [2]

Answer:

x=19

Step-by-step explanation:

First, you place the numbers in place of the variables in their relative positions using the pythagorean theorem:

15^{2} +x^{2}=24^{2}

Then you square the numbers that you currently have:

225+x^{2}=576

Then subtract 225 from both sides to isolate the x:

x^{2} =576-225

This gives you the equation:

x^{2} =351

Then take the square root of both sides which gives you:

x=18.7349939952

Then round to the nearest whole number which gives you x=19

3 0
2 years ago
I need help with this one
Gwar [14]
Factors always multiply each other.

The only option that multiplies something is (y^3 + 3)
So the answer is B.
8 0
3 years ago
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