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4 years ago

Plzzzz someone help me 30 points

Mathematics

2 answers:

VARVARA [1.3K]4 years ago

3 0

Um idk the answer but I’m sure your friends or teachers can help you?

PIT_PIT [208]4 years ago

3 0

So u have to narrow the equation down so that you are left with a variable and a number. The number will represent the variable. To narrow it down, subtract or divide. If you do one of these to one side, you HAVE to do it to the other.

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If s and t are integers greater than 1 and each is a factor of the integer n, which of the following must be a factor of n st ?

yulyashka [42]

Answer:

A) None

Step-by-step explanation:

1) $s^t$ shoudnt neccesarily be a factor of nst, for example, if s = 3, t = 4, and n = 12, then both s and t are factors of n, but $3^4 = 81$ is not a factor of nst = 144.

2) $(st)^2$ shoudnt neccesarily be a factor of nst. Let s be 4, let t be 6, and let n be 12. Then n is a factor of both s and t, but $(st)^2 = 24^2$ is not a factor of nst = 12*24. In fact, it is a greater number.

3) Again, s+t isnt necessarily a factor of nst, let s be 2 and t be 3. Then both s and t are factor of n = 12. However 5 = s+t is not a factor of nst = 72.

So, neither of the three options is guaranteed to be a factor of nst. In fact, for s = 4, t = 6, and n = 12, none of the three options are valid.

4 0

3 years ago

Can someone help with 11-15

lozanna [386]

Answer: -4

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

the wilsons back yard is rectangular plot that has a length of 100 feet and a width of 80 feet .the family planted a garden with

Irina-Kira [14]

the area in square feet is 4400. (because to find the area of the rectangle you multiply the 2 side lengths, 100 and 80 which gives you 8000, then you find the area of the square, multiply 60 by 60 which is 3600, then you subtract the total area of the backyard by the area taken up by the garden, 8000-3600, which gives you your total of 4400.)

8 0

3 years ago

Arianna went running for 0.75 hours and ran 5.55 miles. What was her speed, in miles per hour, if Arianna

Nataliya [291]

Answer:

7.4 miles per hour

Step-by-step explanation:

To find her speed in miles per hour, divide the amount of miles she ran by the number of hours:

5.55/0.75

= 7.4

So, her speed is 7.4 miles per hour

6 0

3 years ago

a local school has a gymnasium that is 48ft long, 36ft wide with an 18ft high ceiling. the school maintenance staff is painting

pshichka [43]

Answer:

Step-by-step explanation:

Let's first measure the four walls. We'll have 2 walls 48 ft wide x 18 ft high (the longer walls), then 2 walls 36 ft x 18 ft high.

These are rectangles we can easily calculate the area:

longer walls: 2 (48 * 18) = 2 * 864 = 1,728 sq ft

shorter walls: 2 (36 x 18) = 2 * 648 = 1,296 sq ft

Total of the walls: 1,728 + 1,296 = 3,024 sq ft.

Now, we assume they'll paint everything and that there are no windows.

Each can covers 400 sq ft.

If we divide 3,024 by 400 we get 7.56

So, they'll need to buy 8 cans of paint to do the job. In such problems, we always round up, otherwise they wouldn't have enough paint.

8 0

3 years ago