MATHEMATICS
MIDDLE SCHOOL

Answer:

Answer:

10x

Step-by-step explanation:

Answer:

Answer:

10x

Step-by-step explanation:

since they both are the same just add them and done

HIGH SCHOOL

What is the factored form? x² - 9x + 20

(x + 10)(x - 1)

(x - 5)(x - 4)

(x + 5)(x + 4)

(x - 10)(x + 1)

The factored form is (x-5)(x-4)

MIDDLE SCHOOL

Shaneeka is saving up to buy a camera that costs $65.50. she already saved 3/4 of the amount she needs for the camera. How much has Shaneeka saved so far?

Answer:

$49.125

Step-by-step explanation:

3/4 of 65.50

= 3/4 × 65.50

= 49.125

HIGH SCHOOL

Felicity set the thermostat in her living room to 68°F. The room temperature t, in degrees Fahrenheit, m minutes after the thermostat is activated, satisfies t = 2cos(0.21m) + 68. Determine the period of the function and explain what it represents. Include the maximum and minimum temperatures in your answer.

Answer with explanation:

Temperature in the living room =68°F

The equation which satisfies ,the room temperature t, in degrees Fahrenheit, m minutes after the thermostat is activated, satisfies

t=2 Cos (0.21 m) +68----------(1)

⇒To determine the period of the function

Z= A cos (sx+q)+r

As period of cos x is 2 π.

So,the given function has period

So, the period of function 1, is given by

⇒The meaning of period of the function is that after every period of the temperature of the room increases or decreases by an integer equal to 2.

⇒Cosine function has maximum value of 1 , and Minimum value of -1.

-1 ≤ Cos x ≤ 1

So, the Maximum value of function = 2 ×1+68°=70°----Maximum Temperature

And, the minimum value of function = 2 ×(- 1)+68°=66°----Minimum Temperature

MIDDLE SCHOOL

How to solve 1.2×7.5-8÷4 with pemdas

Start by multiplying 1.2 and 7.5 which will give you 9.Then you have 9-8/4. so then you do 8 divided by 4 which is 2. so you have 9-2 and that equals 7.

1.2 x 7.5 - 8 ÷ 4

= 9 - 8 ÷ 4

= 9 - 2

= 7

So the answer to your question would be 7.

MIDDLE SCHOOL

The price of a digital camera sold in stores is $129. It is sold on eBay for $65. What is the percent decrease from the store's price to the online price

What i did is multiply 65 times 100, and divided by 129,

(65)(100)= 6500

6500/129= 50.3

then to check i did multiply 50.3 by 129, and divided by 100

(50)(129)= 6450

6450/100= 64.50

I don't think its 50% or either 51%, because 50% gives something less than 65, and 51% gives more than 65. So maybe its in the middle.

to get the right percentage do 50.1 or 5.6 times 129, and then divide by 100

(65)(100)= 6500

6500/129= 50.3

then to check i did multiply 50.3 by 129, and divided by 100

(50)(129)= 6450

6450/100= 64.50

I don't think its 50% or either 51%, because 50% gives something less than 65, and 51% gives more than 65. So maybe its in the middle.

to get the right percentage do 50.1 or 5.6 times 129, and then divide by 100

MIDDLE SCHOOL

Ellie uses 12.5 pounds of potatoes to make mashed potattoes. She uses one tenth as many pounds of butter as potatoes. How many pounds of butter does Ellie use?

Answer: 1.25 pounds of butter

Step-by-step explanation:one tenth of something is the same as dividing that number by 10 so, we divide 12.5 by 10 giving us 1.25

HIGH SCHOOL

The greatest common factor of 3m2n + 12mn2 is

So, is the greatest common factor of

HIGH SCHOOL

Evaluate the function rule for the given value. Y=6*4 for x=-3

Because x does not appear anywhere in the equation y=6*4, evaluate the equation by simply multiplying the numbers on the right side.

y=24

y=24

MIDDLE SCHOOL

PLEASE HELP ASAP: At Lincoln High School, approximately 7 percent of enrolled juniors and 5 percent of enrolled seniors were inducted into the National Honor Society last year. If there were 562 juniors and 602 seniors enrolled at Lincoln High School last year, which of the following is closest to the total number of juniors and seniors at Lincoln High School last year who were inducted into the National Honor Society?

Answer:

The closest number of juniors and seniors who were inducted is 69.

Step-by-step explanation:

At Lincoln High School, approximately 7% of enrolled juniors and 5% of enrolled seniors were inducted into the National Honor Society last year.

There were 562 juniors and 602 seniors enrolled at Lincoln High School last year.

We will calculate the number of students as:

=

= 69.44

Therefore, the closest number of juniors and seniors who were inducted is 69.

Answer:

39.34 juniors and 30.1 seniors