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Fofino [41]
3 years ago
10

Identify the percent of change as an increase or a decrease

Mathematics
1 answer:
bezimeni [28]3 years ago
6 0

Answer:

The percent of decrease is 56.7%

Step-by-step explanation:

There is a change from 120 meals to 52 meals.

This is a decrease.

The percent of decrease is given by:

\frac{decrement}{original \: value}  \times 100\%

We substitute the values to get:

\frac{52 - 120}{120}  \times 100\%

We subtract the numerator to get:

\frac{ - 68}{120}  \times 100\%

=  - 0.566667 \times 100\%

This simplifies to:

- 56.67\%

To the nearest tenth, the percent of decrease is :

56.7\%

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If x^2 = 50, what is the value of x?
SIZIF [17.4K]
X^2 = 50 

Square both sides

x= √50

x= (√25)(√2)

x = 5√2

Final answer: x = 5√2 and since x is to the power of 2 you can have x = + or - <span>x = 5√2</span>
5 0
3 years ago
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Please help me with this again
dimaraw [331]

( {x}^{2}  -2x + 3)(x + 1) \\  {x}^{3}  - 2 {x}^{2}  + 3x +  {x}^{2}  - 2x + 3 \\  {x}^{3}  -  {x}^{2}  + x + 3

Therefore, the answer is the first choice.

3 0
3 years ago
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(a) How many integers from 1 through 1,000 are multiples of 2 or multiples of 9?
DENIUS [597]

Answer:

(a)There are 500 integers from 1 through 1,000 are multiples of 2.

There are 111 integers from 1 through 1,000 are multiples of 9.

(b)0.611

Step-by-step explanation:

Given the set of Integers from 1 through 1000

The least multiple of 2 is 2 and the highest multiple of 2 in the interval is 1000.

To determine the number of terms, we use the formula for the nth term of an Arithmetic Progression, since 2,4,6,... is an Arithmetic Progression,

where first term, a =2, common difference, d =2

Nth term of an A.P,

U_n= a+(n-1)d\\1000=2+2(n-1)\\1000=2+2n-2\\1000=2n\\n=500

  • There are 500 integers from 1 through 1,000 are multiples of 2.

Similarly,

Given the set of Integers from 1 through 1000

The least multiple of 9 is 9 and the highest multiple of 9 in the interval is 999.

To determine the number of terms, we use the formula for the nth term of an Arithmetic Progression, since 9,18,27,... is an Arithmetic Progression,

where first term, a =9, common difference, d =9

Nth term of an A.P,

U_n= a+(n-1)d\\999=9+9(n-1)\\999=9+9n-9\\999=9n\\n=111

  • There are 111 integers from 1 through 1,000 are multiples of 9.

(b)Probability that an integer selected at random is a multiple of 2 or a multiple of 9.

There are a total of 1000 numbers between from 1 through 1,000

n(S)=1000

n(Multiples of 2)=500

n(Multiples of 9)=111

Therefore:

P(\text{Multiples of 9}) \:OR\: P(\text{Multiples of 2})=\frac{111}{1000} + \frac{500}{1000} \\=\frac{611}{1000} \\=0.611

7 0
3 years ago
How much longer will it take a car traveling at an average speed for 2 miles per hour to make the trip from San francisco to New
lbvjy [14]

Answer:

1445.6 hours

Step-by-step explanation:

Distance between New York and San Francisco = 2902.8 miles (checked online)

Average speed of car = 2 mi/hr

Average speed of jet = 500 mi/hr

Time taken by Jet:

Time taken = Distance / speed

Time taken = 2902.8 / 500

Time taken = 5.8056 = 5.8 hours

Time taken by Car :

Time taken = Distance / speed

Time taken = 2902.8 / 2

Time taken = 5.8056 = 1451.4 hours

Time difference :

1451.4 - 5.8 = 1445.6 hours

7 0
2 years ago
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leonid [27]

Answer:

6 2/3 or 20/3

Step-by-step explanation:

Brainliest pls?

5 0
2 years ago
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