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Andre45 [30]
3 years ago
14

Factor 15z^2+17z-18 please show work

Mathematics
1 answer:
siniylev [52]3 years ago
7 0

There is no common factor between 15, 17 and 18 because 17 is prime.  

15z² +17z - 18 =  

d = 17² - 4.15.-18  

d = 289 + 1080  

d = 1369  

z = (-17 +/- \/1369) : 2 * 15  

z = (-17 + 37) : 30  

z' = 20 : 30 = 2/3  

z" = (-17 - 37) : 30  

z" = -54 : 30 = -1.8  

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Crazy boy [7]

We will use the amount Jermaine used to determine the admission price, since that is not given to us. The total amount he paid is equal to the sum of the price of the tickets and the admission price, a. We get the equation 48.75 = 1.50 * 20 + a (a = $18.75). Now, if a person comes to the fair and pays for only the rides and admission, we can form an equation in x, the number of ride tickets, and y, the total cost incurred by that person. y = 1.50x + 18.75. Here, y is the total cost, 1.50 is the price per ticket, x is the number of tickets and 18.75 is the admission cost.

7 0
3 years ago
Just a little bit of math hw
blsea [12.9K]

Answer:

Put 0 in the box.

Step-by-step explanation:

The value x = 0 if replaced in the given equation will always make the denominator zero.

Best Regards!

7 0
4 years ago
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Humans have a normal body temperature of 98.6 F A temperature, x, that differs from normal by at least 2°F is considered unhealt
Romashka-Z-Leto [24]

Answer: 98.6 - x ≥ 2 or x - 98.6 ≥ 2  

Step-by-step explanation:

Since, the normal temperature = 98.6° F

Also, the temperature that differs from normal by at least 2°F is considered unhealthy.

If the temperature is x degree F,

Then, we have two conditions,

Condition 1 : x > 98.6,

The difference between 98.6 and x = x - 98.6

Then the inequality be,

x - 98.6 ≥ 2

Condition 2 : x < 98.6

The difference between 98.6 and x = 98.6 - x

Then the inequality be,

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3 0
3 years ago
27. Reason Adam invests $8,000 in an account that
USPshnik [31]

Answer:

Jacinta will have more money

Step-by-step explanation:

  • For the same amount of investment and interest rate, compound interest is greater with greater number of compounds.
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The interest amount is provided below for quarterly and daily compound:

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Jacinta will have more money

7 0
3 years ago
•GIVEN : - 9a - 16 + 3 = 4 a<br> •Solve for a<br> •Show your work and check your work
jeka94

Answer:

-1

Step-by-step explanation:

-9a<u>(-16+3)</u>=4a ; solve for whole numbers first.

-9a-(13)=4a ; A negative 16 plus a positive 3 is 13.

-9a-4a=13 ; Switch 13 and 4a to make it easier to solve.

-13a=13 ; Now divide each side by -13.

a=-1

3 0
3 years ago
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