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Gwar [14]
3 years ago
13

The absolute value of the sum of -7 and twice a number is 23 . find the number

Mathematics
1 answer:
cestrela7 [59]3 years ago
8 0
The absolute value of a number is the opposite so -7 = 7

23- 7 = 16 * 2= 32+ 7= 39.

Hope this helped!
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Mr.Lash has 42 pounds of dog food divide among his dogs. If each dog receives 7/8 pound of food for each feeding, how many times
igor_vitrenko [27]

Answer:

  48 times

Step-by-step explanation:

(42 pounds)/(7/8 pounds/feeding) = 42·(8/7) feedings = 48 feedings

Mr Lash can feed 48 meals to his animals.

4 0
3 years ago
2 tens 3 tenths 1 thousandth _____ 20.31
Aleks04 [339]

Answer:

20.31

Step-by-step explanation:

2 tens = 20

3 tenths = 0.3

1 thousandths = 0.01

20.31

8 0
3 years ago
Let n be any natural number greater than 1. Explain why the numbers n! 2, n! 3, n! 4, ..., n! n must all be composite. (This exe
bagirrra123 [75]

Answer:

Because each term of the sequence generates numbers with more than 1 and itself as dividers

Step-by-step explanation:

Just for the sake of correction.

1. Explain\: why\: the\: numbers\: n! +2, n!+ 3, n!+ 4, ..., n! \\n \:must\: all\: be\: composite.

1) Let's consider that

n! =n(n-1)(n-2)(n-3)...

2)And examine some numbers of that sequence above:

n!+2

Every Natural number plugged in n, and added by two will a be an even number not only divisible by two, but in some cases by other numbers for example,n=4, then 4!+2=26 which has four dividers.

3) Similarly, the same happens to

n!+3 and n!+4

Where we can find many dividers.

There's an example of a sequence, let's start with a prime number greater than 1

Let n=11

\left \{ n!+2,n!+3,n!+4,n!+5,n!+6,...n!+n. \right \}\\\left \{ 11!+2,11!+3,11!+4,11!+5,11!+6,11!+7,11!+8,...11!+11 \right \}\\\\

That's a long sequence of consecutive composite numbers, n=11.

\left \{39916802, 39916803,39916804,39916805,39916806,39916807,...,39916811,39916812 \right \}

4 0
3 years ago
15 metre long ladder reached the a window 12 metre height from the ground and placing it against a wall and distance a find the
Alla [95]

Answer:

this is the answer of the required questions

thank you

please Mark this as brainlist answer

4 0
3 years ago
A diagonal of a square tile is 10 mm. What is the area of the tile?
olchik [2.2K]

Answer:

A=5×10-5m²

Step-by-step explanation:

Unit Conversion:

d=0.01m

Using the formulas

A=a2

d=2a

Solving forA

A=1

2d2=1

2·0.012=5×10-5m²

3 0
3 years ago
Read 2 more answers
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