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3 years ago

The time it takes Natalie to replace x cell phone screens is given by the equation t =

Mathematics

1 answer:

Alexxx [7]3 years ago

6 0

Answer: 25 hours

Step-by-step explanation:

$t=1+3x$

8 screens

$x = 8$

Replace;

$t=1+3(8)$

$t=1+24$

$t=25h$

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Find the solution(s) of the quadratic equation 2x2 – 3x – 35 = 0

Yuliya22 [10]

Answer: x = 5, x = -7/2

Step-by-step explanation:

2x² - 3x - 35 = 0

Step 1: Find two values whose product = 2(-35) and sum = -3: -10 & 7

Step 2: Replace the b-value of -3x with -10x + 7x:

2x² - 10x + 7x - 35 = 0

Step 3: Factor the first two terms and the second two terms:

2x(x - 5) +7(x - 5) = 0

Step 4: Write the factored form:

Notice that the parenthesis are identical. This is one of the factors. The outside values are the other factor:

Parenthesis: (x - 5)

Outside: (2x + 7)

Factored form: (x - 5)(2x + 7) = 0

Step 5: Set each factor each to zero and solve for x:

x - 5 = 0 2x + 7 = 0

x - 5 $x=-\dfrac{7}{2}$

3 0

3 years ago

A family charges a trip to the zoo on a credit card. The simple interest rate is 12%. The charges are paid after 3 months. What

vodomira [7]

The formula for simple interest is: $A = P(1 + rt)$
$R=12$
We are going to convert the percent (12) into a decimal.
$r = R/100 = 12/100 = 0.12$
Then, we are going to put the months into years.
$3 / 12 = 0.25$
Let's plug in the values:
$A = 175.54(1 + (0.12 * 0.25)) = 180.8062$
$A = 180.81$
The total amount paid for the trip is $180.81

Have a nice day! :)

5 0

3 years ago

Helppppppppppppppppp

JulsSmile [24]

Answer:

The common difference is 6

Step-by-step explanation:

14 - 6 = 8

8 - 6 = 2

7 0

3 years ago

Read 2 more answers