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3 years ago

How many minutes are there in 4 and a half hours?

2 answers:

7 0

$1 \ hour=60 \ minutes \\\\ a \ half \ an \ hour = \frac{1 \ hour}{2}=\frac{60min}{2}=30 minutes \\\\ 4 \ hurs \ and \ a half = 4*60+30= \\\\ =240+30=\\\\ =\boxed{270}$

fiasKO [112]3 years ago

6 0

One hour is 60 minutes, so 4 and a half hours is:

60 * 4,5 = 270 minutes

Answer: There are 270 minutes in 4 and a half hours.

I hope it will help you :)

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Which of the following would best be solved using factoring the difference of squares? 2² + 3x - 10 = 0 O 3r² + 12x = 8 2³ +52²

IgorC [24]

Given: Different equations

To Determine: Which would be best solved using difference of two squares

Solution

The factorization of a difference of two squares is given below

$a^2-b^2=(a-b)(a+b)$

Let us examine each of the given equation

$\begin{gathered} x^2+3x-10=0 \\ x^2-2x+5x-10=0 \\ x(x-2)+5(x-2)=0 \\ (x-2)(x+5)=0 \end{gathered}$ $\begin{gathered} 3x^2+12x=8 \\ 3x^2+12x-8=0 \end{gathered}$ $\begin{gathered} x^3+5x^2-9x-45=0 \\ x^2(x+5)-9(x+5)=0 \\ (x+5)(x^2-9)=0 \\ x^2-9=x^2-3^2=(x+3)(x-3) \\ Therefore \\ (x+5)(x+3)(x-3)=0 \end{gathered}$ $\begin{gathered} x^2-25=0 \\ x^2-5^2=0 \\ (x+5)(x-5)=0 \end{gathered}$

From the above,

$\begin{gathered} x^3+5x^2-9x-45=0 \\ AND \\ x^2-25=0 \end{gathered}$

The two equation above can be solved by difference of two square, but the equation below is the easiest solved using differnce of two square

x² - 25 = 0

3 0

1 year ago

You are feeding a baby alligator named Joseph with 11 pounds of fresh meet in per week.how many grams of meat does Joseph eat pe

laiz [17]

Answer:

<u>The correct answer is C. 5,000</u>

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

Amount of fresh meat Joseph eat per week = 11 pounds

2. How many grams of meat does Joseph eat per week?

Let's answer the question this way:

Conversion of pounds to kilograms

Number of kilograms = 11/2.2

Number of kilograms = 5

Conversion of kilograms to grams

Number of grams = 5 * 1,000

Number of grams = 5,000

<u>The correct answer is C. 5,000</u>

5 0

3 years ago

Lynn Jude and Anne were given the function f(x)=2x^2+6, and they were asked to find f(-4). Lynns answer was 38, Judes answer was

Cerrena [4.2K]

Answer:

Lynn's answer 38 is correct

2(-4)^2+6

2(16)+6

32+6=38

Step-by-step explanation:

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3 years ago

Read 2 more answers

From the topic:areas and volumes

Serggg [28]

this question is unambiguous.

6 0

2 years ago

The temperature was -6°F. It rose so that the temperature was 0°F. What integers represents the change in temperature.

Flauer [41]

Answer:

Step-by-step explanation:

Just do $0 -(-6)$ .

3 0

3 years ago