True or false: (a) If A2 is defined then A is necessarily square. (b) If AB and BA are defined then A and Bare square. (c) If AB and BA are defined then AB and BA are square. (d) If AB

Hello.

First, let's convert 4 into a fraction.

Here's how we do it:

[tex]\mathrm{4=\displaystyle\frac{4}{1} }[/tex]

Now, what is [tex]\displaystyle\frac{4}{1}[/tex] divided by [tex]\displaystyle\frac{1}{8}[/tex]?

In order to figure that out, we need to flop the second fraction over:

[tex]\displaystyle\frac{4}{1} : \frac{8}{1}[/tex]

Now, multiply:

[tex]\mathrm{\displaystyle\frac{4}{1} *\frac{8}{1} }[/tex]

[tex]\mathrm{\displaystyle\frac{32}{1} }[/tex]

[tex]\mathrm{32}[/tex]

Therefore, the final answer is [tex]\mathrm{32}[/tex].

I hope this helps.

Have a nice day.

[tex]\boxed{imperturbability}[/tex]

Answer:

Solution By Gauss jordan elimination method

x = 3, y = 2 and z = 4

Answer:

50°

Step-by-step explanation:

The missing angle would equal the formula:

180°- a - b= x

a and b are the two angles given.

180- 110 -20 = 50

So the missing angle is 50 °

Answer:

I think maybe associative property of addition?

Answer:

[tex]\frac{1}{5^{9} }[/tex]

Step-by-step explanation:

[tex]\frac{5^{-6} }{5^{3} }[/tex]

Rewrite [tex]5^{3}[/tex] as [tex]5^{-6}[/tex] × [tex]5^{9}[/tex]. Cancel out [tex]5^{-6}[/tex] in both numerator and denominator.

= [tex]\frac{1}{5^{9} }[/tex]

Hope it helps and have a great day! =D

~sunshine~

Answer:

[tex]\mathrm{The\:first\:option}:\quad\dfrac{ 1 }{ { 5 }^{ 9 } }[/tex]

Step-by-step explanation:

[tex]\dfrac{ { 5 }^{ -6 } }{ { 5 }^{ 3 } }[/tex]

[tex]\mathrm{Apply\:exponent\:rule}:\quad \dfrac{ { x }^{ a } }{ { x }^{ b } } = { x }^{ a-b }[/tex]

[tex]= { 5 }^{ -6-3 }[/tex]

[tex]\mathrm{Subtract\:the\:numbers:}\:-6-3=-9[/tex]

[tex]=5^{-9}[/tex]

[tex]\mathrm{Apply\:exponent\:rule}:\quad \:{ a }^{ -b } = \dfrac{ 1 }{ { a }^{ b } }[/tex]

[tex]\dfrac{ 1 }{ { 5 }^{ 9 } }[/tex]

So the correct answer would be:

[tex]\mathrm{The\:first\:option}:\quad\dfrac{ 1 }{ { 5 }^{ 9 } }[/tex]

Answer:

2369.86

Step-by-step explanation:

f(36)=3700(1−0.06) ^36/5

2369.857704098921

The value of the quantity after 36 minutes is approximately 3701.5.

percentage, a relative value indicating hundredth parts of any quantity.

We can use the formula for exponential decay to find the value of the quantity after 36 minutes:

[tex]A =A_{0} e^-^r^t[/tex]

where:

A₀ = initial value = 3700

r = decay rate per unit time = 6% = 0.06

t = time in minutes

We want to find A after 36 minutes, so:

t = 36

Substituting these values into the formula, we get:

[tex]A = 3700e^(^-^0^.^0^6^\times^ 3^6^/^5)[/tex]

A=3701.5

Therefore, the value of the quantity after 36 minutes is approximately 3701.5.

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Answer:

Jeez this is a big question

Step-by-step explanation:

1. if they are rounded to the nearest 10 that would mean that it is actually

40 * 40

40 * 40 is 1600. The answer for #1 is 1600

2. its just asking what 21 x3 is, 21x3 is 63

3. All you do for this is 20*23

20 * 23 is 460

4. 42 * 31 is 1302

5. 22 * 95 = 2090

6. You do 20x2 which is 40 and then you do 8x2 which is 16

Adding

then you have 40 + 16 = 56

Subtracting

40 - 16 = 24

Multiplying

40 * 16 = 640

Dividing

40/16 = 2.5

7. 33x2 is 66

8. 57* 4 is 228

9. 128 * 11 is 1408 but if you round the 11 to the nearest 10, that would be 10, then if you round the 128 to the nearest 10, that would be 130, and then 130 * 10 is 1300

38 × 41 can be estimated by rounding 38 and 41 to the nearest ten, which gives us 40 and 40. Multiplying these two numbers gives us 1600. So the answer is 1,600.

21 × 3 is equal to 63.

Yusef wants to buy 20 pairs of sneakers to donate to a local shelter. Each pair costs $23. How much money will Yusef spend on all the sneakers? The answer is $460.

The product of 42 × 31 is 1,262.

A basketball team has 22 games this season. At each game, 95 raffle tickets are sold. How many raffle tickets are sold during all 22 games? The answer is 2,090.

Carter rewrites 28 × 2 in expanded form to find the product.

28 × 2

= (20 × 2) + (8 × 2)

The next step to find the product is to multiply the product of 20 × 2 by the product of 8 × 2.

= 20 × 2 + 8 × 2

= 40 + 16

= 56

What is the product of 33 × 2? The answer is 66.

What is the product?

57 × 4

= 228

Marta has 128 stamps. Kelli has 11 times as many as Marta. Marta estimates the total they have altogether by rounding each amount to the nearest ten and then multiplying.

What is the best estimate of 128 × 11 using this method? The answer is 1,300.

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Answer:

4 quarts constitute for 1 gallon.

Let's convert quarts into gallon.

Explanation: A quart contains 4 cups or 2 pints while a gallon contains 16 cups or 8 pints. Hence, a liquid gallon is equal to 4 liquid quarts.

Step-by-step explanation:

[tex]hope \: it \: helps \: you[/tex]

Answer:

$89.79

Step-by-step explanation:

156.87-21.58-45.5 = $89.79

Answer:

15° , 45°, 120°

Step-by-step explanation:

sum the parts of the ratio, 1 + 3 + 8 = 12 parts

the sum of the 3 angles in a triangle = 180° , then

180° ÷ 12 = 15° ← value of 1 part of the ratio, then

3 parts = 3 × 15° = 45°

8 parts = 8 × 15° = 120°

the 3 angles are 15° , 45° , 120°

Answer:

C= $25 x 6 = $150

Step-by-step explanation:

Answer:

9 and 1 fourths

Step-by-step explanation:

Answer:

10 9/16

Step-by-step explanation:

For this equation, we are going to need to multiply these mixed numbers to get our answer. The quickest and easiest way to solve this would be to turn these mixed numbers into improper fractions.

(Important:) To make an improper fraction, multiply the denominator by the whole number, then add the numerator. This becomes your new numerator for your improper fraction.

With that said, we can now turn these into improper fractions. So:

3 1/4 = 13/4 and 13/4.

To find area, we need to multiply L x W (length x width) to get our answer. So:

13/4 x 13/4 = 169/16 = 10 9/16.

I hope that this helps.

Step-by-step explanation:

the standard slope-intercept form is

y = ax + b

the factor of x (here "a") is always the slope of the line. b is the y-intercept (the y value when x = 0).

the slope of the other line is 5/6.

ok.

perpendicular to this means in a right angle (90°).

and that means that the fraction of "y coordinate change / x coordinate change" turns upside-down, and the sign has to flip.

so, the slope of our line is then -6/5.

and b ?

we use the given point.

1 = -6/5 × -9 + b = 54/5 + b

5/5 = 54/5 + b

b = -49/5

and our line equation is

y = (-6/5)x - 49/5

Answer:

17/40

here! hope this helps!

[tex] \huge{ \rm{Question:}}[/tex]

7. If a figure measures 7 centimeters high, 3 centimeters wide and 2 centimeters deep, what is the volume of the figure?

[tex] \huge{ \rm{Answer:}}[/tex]

The volume of the figure is 42.

Step-by-step explanation:

= 2 x 7 x 3

= 14 x 3

= 42

HOPE THIS HELPS^^

Answer:

your answer would be 520

Step-by-step explanation:

13 x 40 = 520

Answer:

it could be 42.25

Step-by-step explanation:

I know this because 310-145=165/4=42.25

(you MIGHT need to round it)

Answer:

1) 38

2) 49

Step-by-step explanation:

1) 10 + 8 ÷2（4 + 3）

Knowing Pemdas, we do the expression in the parentheses first.

4+3 = 7

The new expression is: 10 + 8 ÷ 2 · 7

Using Pemdas, 8 ÷ 2 is 4.

10 + 4 · 7

10 + 28 = 38.

The answer to #1 is 38.

2)  21 ÷ ( 1 ) ( 3 ) + 0 - 14

21 ÷ 1 = 21

21 · 3 = 63

63 + 0 = 63

63 - 14 = 49

The answer to #2 is 49.

Answer:

1 yard is equal to 3 feet

6 feet(total)

___________ = 2 yards

3 feet(equal to one yard)

Answer:

correct statements are #1,3,5

Step-by-step explanation:

second check box represents the cost of 7 gallons

fourth check box is incorrect because the unit price of gas is 3 dollars for each gallon

Answer:

1=1/2

2=8 times the square root of 3 over 25     8xsuare root 3/25

3=16

4=7 times square root of 3 over 4    7x square root 3/4

5=square root of 2 over 2

6=square root 3

7=square root 2

8=1/3

9=10/7

Step-by-step explanation:

you can also use algebrator square root calculator!!

Answer: 2052

Step-by-step explanation: 684 times 3 equal to 2052

Answer:

Step-by-step explanation:

4x+6x+2x=180

12 x=180

x=180/12=15

angles are 4×15=60°,6x=6×15=90°,2x=2×15=30°

so angles are 60°,90°,30°

it is a right angled triangle.

Step-by-step explanation:

Step 1 total number of person =450

Step 2 number of people who are alcholic =200

Step 3 now subtract them like: 450 - 200

Answer=200 people are non alcholic

Multiply the area of the circle by the percentage:

60 square units x 50% = 60 x 0.50 = 30

50% 0f the circle id 30 square units.

Answer:

Slope: 1/2

Y-int: -4

[tex]\tt slope=\dfrac{y_2-y_1}{x_2-x_1}[/tex]

point 1 = -1,-6

point 2 = 0,-4

slope:

[tex]\tt \dfrac{-4+6}{0+1}=2[/tex]

y intercept when x = 0, so y intercept from table = -4

Answer:

-15

Step-by-step explanation:

Answer:

50 cents

Step-by-step explanation:

Since 1 dollar is too much, then try 50 cents. Then it worked.