Guest #3834

2 months ago

15t+4t+5t=6-30

24t=-24

t=-1

24t=-24

t=-1

Question

What is the probability of spinning a 4 or an odd number?

Solution 1

Please explain further.

Question

Which of the following is the domain of the function G(F(x))? F(x) = x + 4, G(y) =
G(F(x)) =
A. All numbers less than or equal to 4
B. All numbers less than or equal to -4
C. All numbers greater than or equal to -4
D. All numbers greater than or equal to 4

Solution 1

1) G(F(x)) means

2) Mathematically that is:

G(F(x) = G (x + 4) =

3)Â The the domain is all the numbers for which the expression inside the root are not negative, i.e

That is the option C. all number greater than or equal to - 4.

Question

Josiah has 3 packs of toy animals. Each pack has the same number of animals. Josiah gives 6 animals to his sister stephanie. Then josiah has 9 animals left.how many animals were in each pack?

Solution 1

Let the number of animals in each pack be x.

Total number of animals will be 3x

after Josiah gave 6 animals to his sister the remaining animals were:

3x-6=9

thus sloving for x we have:

3x-6=9

add 6 on both sides

3x-6+6=9+6

3x=15

divide both sides by 3

(3x)/3=15/3

x=5

Answer:Â

There were 5 animals in each pack

Total number of animals will be 3x

after Josiah gave 6 animals to his sister the remaining animals were:

3x-6=9

thus sloving for x we have:

3x-6=9

add 6 on both sides

3x-6+6=9+6

3x=15

divide both sides by 3

(3x)/3=15/3

x=5

Answer:Â

There were 5 animals in each pack

Question

If 12 1/2% of a sum of money is $40 what is the total sum of money?

Solution 1

The total sum of **money **will be **$320.**

Let the *total sum of money* be represented by x.

Based on the information given, the **equation** to solve the question will be:

**12 1/2% Ã— x = 40**

0.125x = 40

**Divide by 0.125**

x = 40/0.125.

x = 320

Therefore, the total sum of** money **will be **$320.**

Read related link on:

Solution 2

12 1/2% = 12.5%

12.5% = $40

1% = 40 Ã· 12.5 = $3.20

100% = $3.20 x 100 = $320

**Answer: $320**

12.5% = $40

1% = 40 Ã· 12.5 = $3.20

100% = $3.20 x 100 = $320

Question

What are the zeroes of 2x squared plus 6x minus 8

Solution 1

(2x-2)(x+4)=0 x=1 x=-4

Question

A ball is launched into the sky at 272 feet per second from the roof of a skyscraper 1,344 feet tall. The equation for the ballâ€™s height h at time t seconds is h = -16t2 + 272t + 1344. When will the ball strike the ground?

Solution 1

**Answer:**

** Time taken to reach the ball to the ground is 21 seconds.** Â Â Â Â Â Â Â Â Â

**Step-by-step explanation:**

**Given : **A ball is launched into the sky at 272 feet per second from the roof of a skyscraper 1,344 feet tall. The equation for the ballâ€™s height h at time t seconds is .

**To find :** When will the ball strike the ground?

**Solution : **

**The equation for the ball's height 'h' at time 't' is given by,**

**When the ball strike the ground the height of the ball became zero.**

**Substitute h=0 in the given equation,**

**Taking 16 common,**

**or **

**Solve by middle term split,**

**Reject t=-4 as time can never be negative.**

**Therefore, Time taken to reach the ball to the ground is 21 seconds.**

Solution 2

The answer is -16(t+4)(t-21)

Question

American cheese 0.45 to 4.26 what is the percent increase

Solution 1

For this case we have the following rule of three:

Â 0.45 ------> 100%

Â 4.26 ------> x

Â Clearing x we have:

Â x = (4.26 / 0.45) * (100)

Â x = 946.6666667%

Â Thus, the percentage of growth is:

Â 946.6666667 - 100 = 846.6666667

Â Rounding:

Â 846.7%

Â**Answer:**

Â**the percent increase is:**

Â**846.7%**

Â 0.45 ------> 100%

Â 4.26 ------> x

Â Clearing x we have:

Â x = (4.26 / 0.45) * (100)

Â x = 946.6666667%

Â Thus, the percentage of growth is:

Â 946.6666667 - 100 = 846.6666667

Â Rounding:

Â 846.7%

Â

Â

Â

Question

The average score on a standardized test is 750 points with a standard deviation of 50 points. What is the probability that a student scored more than 850 on the standardized test ?

Solution 1

The probability that student scored more than 850 we shall proceed as follows:

z=(x-Î¼)/Ïƒ

where:

x=850

Î¼=750

Ïƒ=50

thus

z=(850-750)/50

z=2

thus

P(x>850)=1-P(x<850)=1-P(z<2)=1-0.9772=0.0228

Answer: P(x>850)=0.0228

z=(x-Î¼)/Ïƒ

where:

x=850

Î¼=750

Ïƒ=50

thus

z=(850-750)/50

z=2

thus

P(x>850)=1-P(x<850)=1-P(z<2)=1-0.9772=0.0228

Answer: P(x>850)=0.0228

Solution 2

**Answer:**

2%

**Step-by-step explanation:**

Question

Which of the following terms correctly describes 4:1?

Solution 1

Ratio? i don't know if thats exactly what it's asking but it's a ratio

Solution 2

**Answer:**

The answer is Ratio

**Step-by-step explanation:**

Question

WHAT IS 1/3 OF 97.50

Solution 1

The answer is 32.5. You can also do 97.5 * 0.333 = 32.46 (rounded up is 32.5).

Solution 2

Ans: 32.5 because you multiply it both together.....i really dont know i used the calculator XD sorry

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