Reasoning Explain why either a or b must be 0 if ab = 0, but neither a nor b
must be 4 when ab = 4.

Answers

Answer 1
By the zero product property, a or b must be 0 if ab = 0. Or you could solve for each variable.

Divide both sides by b:
b=0/a —> b=0

Divide both sides by b:
a=0/b —> a=0

Hmm A could be 4 and b could be 1 because 4*1=4

Related Questions

Drag the symbol to complete the solution to this inequalities​

Answers

Answer:

x ≤ 13.2.

Step-by-step explanation:

6  ≥  x/2.2

Multiply both sides by 2.2:

6 * 2.2 ≥ x

x ≤ 13.2.

The solution to the inequality is [tex]x \leq 13.2[/tex], the correct symbol used in blank is  ≤.

To complete the solution to the inequality [tex]6 \geq \frac{x}{2.2}.[/tex]

Rearrange the inequality as follows:

[tex]\frac{x}{2.2} \le 6[/tex]

The solution to the inequality is:

[tex]x \leq 13.2[/tex]

Comparing the expression [tex]\frac{x}{2.2}[/tex] to 6, we can see that [tex]\frac{x}{2.2}[/tex] should be less than or equal to 6 in order for the inequality to hold true.

Therefore, the correct symbol to place in the blank is "≤" and solution is [tex]x \leq 13.2[/tex].

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The sum of 7 and Rita's score is 54

Answers

Answer:

the answer to your question is 61

Step-by-step explanation:

54+7=61

Answer:

47

Step-by-step explanation:

54-7=47

I'm assuming we are trying to find Rita's score. We know that the total is 54. "The sum" refers to addition, so we must reverse the problem to find her score

54- 7= 47

Total - 7 = her score

Terri weighed 95 lbs last month. This month she weighed 105 lbs.
What is the percent of increase?

Answers

Answer:

10 Ib. difference so maybe 0.99

Step-by-step explanation:

Twice the sum of three times a number and eight translate this plz

Answers

Answer:

3 x X + 8 x 2 is your expression

I'm pretty sure the key word "and" means addition so your adding 8.

which of the following statements is false about the area of a circle

Answers

Answer:

Step-by-step explanation:

All are true except for the second.  Only the second is false.

(pi)(d) is the circumference (not the area) of a circle.

The incorrect statement is [tex]A = \pi d[/tex].

The correct option is 2.

What is Surface Area?

The area is the area occupied by a two-dimensional flat surface. It has a square unit of measurement. The surface area of a three-dimensional object is the space taken up by its outer surface. Square units are used to measure it as well. The region that includes the base(s) and the curved portion is referred to as the total surface area. It is the overall area that the object's surface occupies. The total area of a form with a curved base and surface is equal to the sum of the two areas.

As per the given data:

We have to find out the incorrect statements out of the given options about the area of a circle.

[tex]A = \pi r^2[/tex]

This statement is correct, as the area of a circle is pi times square of the radius.

[tex]A = \pi d[/tex]

This statement is incorrect, as the area of a circle is given by:

[tex]A = \pi r^2 =\frac{ \pi d^2}{4}[/tex]

The area of a circle determines how much space is covered by the circle.

This statement is correct.

The area of a circle describes the number of square units that fit inside the circle.

This statement is correct.

Hence, the incorrect statement is [tex]A = \pi d[/tex].

To learn more about surface area, click:

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Solve for perimeter. (photo included)

Answers

Answer:

24

Step-by-step explanation:

5+7+5+7=24

Answer:

24 m

Step-by-step explanation:

Add the complete outside of the shape. One side measure is 5 m. The other measure is 7 m. Add 5 + 7 to get 12 m. This is your answer for half of the shape. Double it to find the other completely symmetrical half. To double it, use the equation 12 x 2 = 24.

Hope it helps and is correct!

HELP WITH QUESTION 14 AND 15 IF I GET THEM RIG U WILL GIVE BRAINLIEST

Answers

Answer:

333 meters per second

Step-by-step explanation:

Answer:

14) 333 meters per second

15) True

Step-by-step explanation: hope this help :)

If an object falls 40 meters in 4 seconds,how far will it fall in6 seconds​

Answers

Answer:

60 seconds

Step-by-step explanation:

step 1.) find how many meters it falls per second

          40m / 4sec = 10m/s

step 2.) use the equation above to find in terms of the question

          10m/s for 6sec = 10 x 6 ====> 60 seconds

A shirt has a retail price of $25.00. If the tax rate is 8%, what will the tax amount be?

Answers

Answer:

2

Step-by-step explanation:

25 x 0.08 = 2

It would be 2 if you turned them into a decimal

What is the measure of _Y, in degrees?
y
A. 116°
B. 32°
C. 640
D. Cannot be determined

Answers

Answer:

C. 116º

Step-by-step explanation:

Both sides are congruent, so the triangle is an isosceles triangle. So angle Z will have to be congruent to angle X. Add together the two angles, (32 + 32) and subtract the sum from 180º since all triangles add up to 180º.

32 + 32 = 64

180 - 64 = 116

PLEASE HELP ME I BEG OF YOU IF YOU HELP ME I WILL GIVE YOU BRAINTLIEST JUST PLEASE HELP ME "Julie goes to the sports store and spends $40.50 before tax. She buys a pair of shorts for $21.75 and 3 pairs of socks that each cost same amount. How Much does each pair of socks cost?" Please help me

Answers

Answer:

$6.25

Step-by-step explanation:

Find the value of x: x/6 = 16/48

PLEASE HELP

Answers

Answer:

x = 2

Step-by-step explanation:

multiply (16/48) by 6 to get rid of the fraction and then you get x = 2

2, bc you’d set up a ratio. And then solve for x which would set the equation up as 48x= 96 and would leave you w 2

this is iready please helpppppppp.cries

Answers

Answer:

umm okay

Step-by-step explanation:

Answer:

There is nothing

Step-by-step explanation:

Evaluate help please!

Answers

ABSOLUTE VALUE

The absolute value of a number is the distance from 0 to that number. The distance is positive, hence, the absolute value is always a positive number.

Exercise

Replace the value of x:

[tex]| x - 8 |[/tex]

[tex]| -4 - 8 |[/tex]

[tex]| -12 | = \large{\boxed{12}}[/tex]

The absolute value of a number is the numerical value of the number, without regard to its sign.

Answer. 12

Jalen charges $25.50 for every 3 hours of yard work he does for his neighbors. Ralph charges $34 for every 4 hours of work that he does. Who charges less?
They charge the same amount.
Ralph
Jalen

Answers

25.50/3= 8.50
34/4= 8.50

They charge the same. $8.50 an hour

Answer:

They charge the same

Step-by-step explanation:

i hope this helps

The least common multiple of 20 and 12 is

Answers

Answer:

60

Step-by-step explanation:

fIND the measurement of angle 2​

Answers

Answer:

121is your answer

<1+<2=180(linear pair)

4x-1+9x-14=180

13x-15=180

13x=180+15

x=195/13=15

:.<2=9×15-14=121

What is the measure of angle N?

Answers

Answer:  A) 61 degrees

=========================================================

Work Shown:

Apply the law of sines

sin(N)/MO = sin(O)/MN

sin(N)/18 = sin(17)/6

sin(N) = 18*sin(17)/6

sin(N) = 0.87711511416821 ................. which is approximate

N = arcsin(0.87711511416821)

N = 61.296295678111

N = 61 degrees approximately

----------------------

Notes:

Arcsine is the same as inverse sine. Your calculator is likely to have a button labeled [tex]\sin^{-1}[/tex] to indicate inverse sine.There are two solutions to sin(N) = 0.877; however, the other solution for N is larger than 90. This triangle your teacher is showing appears to be an acute triangle where every angle is less than 90 degrees. Technically two triangles are possible with these current given sides and angle.

Kari has 20 points. This is 4 times as many points as Shane has.
How many points does Shane have?

Answers

Answer:

80

Step-by-step explanation:

20 × 4 = 80

Answer:it is five

Step-by-step explanation:just divide 20 by 4

Please help i really need help on a b and c

Answers

The equation is y=5x+25
It will take 72 cars for the class fund to be $385. Work shown is in the picture attached.

please help me with this

Answers

Answer:

hard core question

Step-by-step explanation:

PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!

Answers

simplified it should be 4x^10y^8

Which ordered pair is the solution to this system of equations?
2x - y = 10
x+y=2
A) (4,-2)
B) (4,2)
C) (2,-4)
D) (-4,2)

Answers

Answer:

A) (4, -2)

Step-by-step explanation:

Let f be the function defined by f(x)=x^3+x^2+x. Let g(x)=f^-1(x), where g(3)=1. What is the value of g'(3)?

Answers

Answer:

1/6

Step-by-step explanation:

Given the function

f(x)=x^3+x^2+x

Get the inverse. Let y = f(x)

y = x^3+x^2+x

Replace y with x

x = y³+y²+y

Differentiate with respect to x

1 =3y²dy/dx + 2ydy/dx + dy/dx

1 = (3y²+2y+1)dy/dx

dy/dx = 1/3y²+2y+1

g'(x) = 1/3(g(x))²+2g(x)+1

If x = 3

g'(3) = 1/3(g(3))²+2g(3)+1

g'(3) =1/3(1)²+2(1)+1

g'(3) = 1/3+2+1

g'(3) = 1/6

Hence g'(3) = 1/6

∆ABC is an equilateral triangle. Point P is on base BC such that
PC = 1 /3 BC. If AB = 12 cm, find AP

Answers

Answer:

15 I just stared so I am bad but I think I am correct

HELP


Which equation represents a line parallel to y = 3x - 4?

1) y=-3x + 4
2) 6x-2y = 12
3) x + 3y = 9
4) y = 1/3x - 2

Answers

1 because it is reveresed
It’s 1 becuase it’s reversed

Marianna draws a rectangle with a width of 2/5 inch and a length of 3/5 inch. What is the area of the rectangle

Answers

Answer:

[tex]A = \frac{6}{25} in^{2}[/tex]

Step-by-step explanation:

area = length • width

[tex]A = \frac{2}{5} *\frac{3}{5}\\A = \frac{6}{25} in^{2}[/tex]

Answer:

6/25

Step-by-step explanation:

i dont feel like explaning what a draaaaaggggg

all rational numbers are integers trure or false​

Answers

True.

The rational numbers include all the integers, plus all fractions, or terminating decimals and repeating decimals. ... All natural numbers, whole numbers, and integers are rationals, but not all rational numbers are natural numbers, whole numbers, or integers.
The answer is false.

All rational numbers are not integers. Rational numbers are of the form p/q, where p and q are integers with non-zero q.

pls helpppp asapppp with the question above

Answers

Answer:

the answer should be B

Step-by-step explanation:

i do apologize if its wrong im like 99.9% sure it correct

Answer:

0

Step-by-step explanation:

4(m+2) = -4(m-2)

by dividing over 4 :

m+2 = -1(m-2)

= m+2 = -m+2

by subtracting 2 :

m = -m

by adding "m" :

2m = 0

So

m = 0

I hope that the explanation is clear for you.

My son has an assignment, and he doesn't know what
l-3l means. Can someone explain what it is?

Answers

That is the absolute value of -3, when you take the absolute value of something, you would get rid of everything in front of the number. The absolute value of -3 is 3.
Hope this helps.
It absolute value it is asking what is the absolute value meaning-opposite which is -3 turns to a positive number so it would be |3|
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