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2 years ago

Match the reasons with the statements in the proof.

Mathematics

2 answers:

polet [3.4K]2 years ago

8 0

Same here I can’t read it

kobusy [5.1K]2 years ago

6 0

Answer:

for some reason i cant see ur attachment. lo siento

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A prime number less than 100 is selected randomly. what is the probability that its square has units digit $7$?

liberstina [14]

Any number ends with 0, 1, 2, 3, 4, 5, 6, 7, 8 or 9

Given any number. The square of this number is the last digit of square of the original numbers units digit.

For example

23*23 ends with 9 (3*3=9)

149*149 ends with 1 (9*9=81)

2564*2564 ends with 6 (4*4=16)

and so on

so all the possible unit digits of a square number are {0, 1, 4, 5, 6, 9}

because:

0*0= 0 ; 1*1=1; 2*2=4; 3*3=9; 4*4=16; 5*5=25, 6*6=36; 7*7=49; 8*8=64, 9*9=81

Thus, the probability that the square of a number selected from any set of numbers being 7, is 0.

Answer: 0

4 0

2 years ago

Which expression represents the following calculation? Add the product of 7 and 5 to the quotient of 288 and 18.

Nataly_w [17]

Answer: 288/18+7x5

Step-by-step explanation:

6 0

2 years ago

The following table shows the number of innings pitched by each of the Greenbury Goblins' starting pitchers during the Rockbotto

Lady_Fox [76]

Answer:

The number of innings Brantley pitched is 7.

Step-by-step explanation:

We are given that the table shows the number of innings pitched by each of the Greenbury Goblins' starting pitchers during the Rockbottom Tournament below;

Pitcher Number of innings pitched

Calvin 11

Thom 12

Shawn 7

Kris 3

Brantley x

Let the number of innings Brantley pitched be 'x'.

The mean of the following data set is given by the following formula;

Mean = $\frac{\text{Sum of all data values}}{\text{Total number of observations}}$

$8 = \frac{11+12+7+3+x}{5}$

$8\times 5 =33+x$

$40 = 33+x$

x = 40 - 33 = 7

Hence, the number of innings Brantley pitched is 7.

8 0

3 years ago

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What is the least common multiple of 8, 12, 7

shepuryov [24]

Ur answer will be 168 because it’s the smallest number that all of the numbers divide into evenly

3 0

2 years ago

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HELP!!!

ki77a [65]

Length of the outer frame: 4+2x
width of the outer frame: 3+2x
area of the outframe: (4+2x)(3+2x)=15
expand the equation: 12+8x+6x+12x^2=15
combine like terms: 4x^2+14x-3=0

4 0

2 years ago

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