Guest #3839

2 months ago

21 cents =75%

divide both sides by 3

7cents= 25%

multiply each side by 4

28=100%

Answer=28

divide both sides by 3

7cents= 25%

multiply each side by 4

28=100%

Answer=28

Question

Mara ran 3km north ad then 4km east. she will finish her run by running directly home. What is the total distance of her run

Solution 1

So we need to find the length of the hypotenuse of a right triangle with sides of 3 and 4, then add So we need to find the length of the hypotenuse of a right triangle with sides of 3 and 4, then add that distance to 3 and 4.

By the Pythagorean Theorme, the hypotenuse squared is equal to the sum of the sides squared...

d^2=3^2+4^2

d^2=9+16

d^2=25

d=âˆš25

d=5

So the total distance of her run is 5+4+3=12 km

By the Pythagorean Theorme, the hypotenuse squared is equal to the sum of the sides squared...

d^2=3^2+4^2

d^2=9+16

d^2=25

d=âˆš25

d=5

So the total distance of her run is 5+4+3=12 km

Solution 2

You can solve this with the Pythagorean theorem.

9+16=25, and the square root of 25 is 5. This is your answer.

9+16=25, and the square root of 25 is 5. This is your answer.

Question

15t+30+5t=-4t+6 please show step by step

Solution 1

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:**

Mathematics
2647929

History
842281

English
748681

Biology
586256

Social Studies
406852

Chemistry
368373

Business
348603

Physics
324927

Health
199835

Spanish
130075

Geography
112100

Computers and Technology
106146

Arts
77164

Advanced Placement (AP)
23675

World Languages
23213

French
22589

Engineering
19607

Law
17108

Medicine
13966

SAT
10987

German
3389

High School
3423409

Middle School
2092250

College
1518097