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3 years ago

ASAP PLEASE !!!!! The Reflexive Property of Equality says:

Mathematics

1 answer:

Kisachek [45]3 years ago

4 0

Answer:

A. For any numbers a and b, if a = b then b = a.

Step-by-step explanation:

Examples:

1 = 2 ⇔ 2 = 1

2x + 3t ⇔ 3t + 2x

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Caiden wants to use the distributive property to find the value of 28⋅19+28⋅6528·19+28·65. Which expression can he use?

MakcuM [25]

28 times 28 times (19+65)

4 0

4 years ago

ATM personal identification number (PIN) codes typically consist of four-digit sequences of numbers. Find the probability that i

oksian1 [2.3K]

Answer:

(a) 0.0001 or 0.01%

(b) 0.01 or 1%

Step-by-step explanation:

Since there are 10 possible numeric digits (from 0 to 9), and there is only one correct digit, there is a 1 in 10 change of getting each digit right.

The probability that if you forget your PIN, then you can guess the correct sequence

(a) at random:

$P=(\frac{1}{10})^4=0.0001=0.01\%$

(b) when you recall the first two digits.

$P=(\frac{1}{10})^2=0.01=1\%$

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3 years ago

If you know how to do this correctly, please help me!! Thank you. 30 points :)

AleksandrR [38]

Answer:

Step-by-step explanation:

parell lines have same slopes

perpendical line slope product is -1

4 0

3 years ago

Jan walks 2 miles at a constant rate of 3 miles per hour and then runs 1 mile at a constant rate of 8 miles per hour.

stealth61 [152]

Answer:

(a).4.36 mph

(b) No

Step-by-step explanation:

We are given that

Jan covered distance,s1 =2 miles

Speed of Jan, a=3 mph

s2=1 mile

b=8mph

We have to find the Jan' s average speed for the entire trip.

Average speed = $\frac{2ab}{a+b}$

Using the formula

Average speed= $\frac{2(3)(8)}{3+8}=4.36mph$

Average speed with two speed

Average of Jan’s two speeds

$=\frac{a+b}{2}$

= $\frac{3+8}{2}=5.5 mph$

$4.36\neq 5.5$

Hence, the average speed in part (a) is not equal to the average of Jan’s two speeds.

5 0

3 years ago

What's (7.3 x 10^-1) (.004) in standard notation

lions [1.4K]

Answer:

.73(.004) or .00292

Step-by-step explanation:

First, you should look at the equation: (7.3x10^-1). This means you would have to move the decimal to the left one time. So, the equation would be .73(.004).

If you wanted to find the answer to this equation, you would get .00292.

Standard notation: (.73)(.004).

6 0

3 years ago

Read 2 more answers