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kotykmax [81]
2 years ago
14

Simplify the expression using order of operations. 15−7×2+23

Mathematics
2 answers:
ZanzabumX [31]2 years ago
8 0

Answer: 24

Step-by-step explanation:

astra-53 [7]2 years ago
8 0

Answer:

24

Step-by-step explanation:

Multiplication first:

15 - 14 + 23

Addition and Subtraction:

15 - 14 + 23 = 24

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A runner compared how long it took him to run 200 meters to the record time held by a friend. In his first heat, his time was 2.
Rasek [7]

Answer: it took him 0.075 seconds lesser

Step-by-step explanation:

In his first heat, his time was 2.45 seconds greater than his friend's record time. In his second heat, his time was 2 3/8 seconds greater than his friend's record time. Converting 2 3/8 seconds to decimal, it becomes 2.375 seconds

Therefore, he was fastest in the second heat.

The difference between the time he used to run in the second heat than in the first heat is

2.45 - 2.375 = 0.075 seconds

4 0
3 years ago
PLEASE HELP!!!! The problem is in the photo below.
Ratling [72]
Answer :36 explanation: (39x39)-(15-15)=1296 then square root that and get 36
7 0
2 years ago
For any positive integer n, prove that n^3-n is divisible by 6.please answer ​
ikadub [295]

Answer:

yes it is true

Step-by-step explanation:

if we take n=2 then

2°3-2=8-2=6

3 0
2 years ago
A 2-row table with 9 columns. The first row is labeled x with entries negative 4, negative 3, negative 2, negative 1, 0, 1, 2, 3
Margarita [4]

Answer:

x    -4    -3  -2  -1    0    1   2   3    4

y  -54 -20  -4   0   -2  -4  0   16   50

at 4 it is  maximum .

maximum value=50

hope that helps

7 0
3 years ago
Read 2 more answers
Please help I asked this question earlier and nobody answered! :(​
tatiyna

Answer:

B

Step-by-step explanation:

One way to tell is to put both equations into slope-intercept form.  That form is usually written y=mx+b where  <em>m</em>  is the slope and  <em>b</em>  is the y-intercept.

Solve the first equation for y.

6x+2y=5 \\ 2y=-6x+5 \\ y=-3x+5/2

The slope of this line is -3, and its y-intercept is 5/2.

Solve the second equation for y.

y+3x=2\\y=-3x+2

The slope of this line is -3 and its y-intercept is 2.

The lines are parallel because they have the same slope and <u>different</u> y-intercepts.  There is no solution to the system.

8 0
3 years ago
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