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4 years ago

Which statements are true about the rules of multiplication for signed numbers check all that apply

Mathematics

2 answers:

Tcecarenko [31]4 years ago

7 0

Answer:

1,3,4

Step-by-step explanation:

i got it right on the test and i wanna help simplify the other answer give the other answerer brainliest please

Wewaii [24]4 years ago

6 0

Answer:

The product of two negative integers is positive. (-a) *(-b) = ab True

The product of two integers with different signs is positive. (-a) (b) = -ab False

If two numbers are the same sign, then the product is positive.

a*b = ab -a * -b = ab True

The product of a positive and a negative is negative.

-a * b =- ab a * -b =- ab True

If the signs of two integers are different, then the product is positive.

-a * b =- ab a * -b =- ab False

Step-by-step explanation:

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given two values with the same number of decimal places and a significant digits, is it possible for an operation performed with

Akimi4 [234]

Need to see more info jk idk what grade u are after that i will know how to help

5 0

4 years ago

Solve 80% of x = 100 or 0.8x = 100

suter [353]

Answer:

125

Step-by-step explanation:

divide both sides of the equation by 0.8

0.8÷0.8=0.8÷100

any expression divided by 1 is itself

x=100÷0.8

divide the numbers

100÷0.8=125

125 is your answer

7 0

3 years ago

Find four numbers that form a geometric progression such that the third term is greater than the first by 12 and the fourth is g

olchik [2.2K]

If $x$ is the first number in the progression, and $r$ is the common ratio between consecutive terms, then the first four terms in the progression are

$\{x,xr,xr^2,xr^3\}$

We want to have

$\begin{cases}xr^2-x=12\\xr^3-xr=36\end{cases}$

In the second equation, we have

$xr^3-xr=xr(r^2-1)=36$

and in the first, we have

$xr^2-x=x(r^2-1)=12$

Substituting this into the second equation, we find

$xr(r^2-1)=12r=36\implies r=3$

So now we have

$\begin{cases}9x-x=12\\27x-3x=36\end{cases}\implies x=\dfrac32$

Then the four numbers are

$\left\{\dfrac32,\dfrac92,\dfrac{27}2,\dfrac{81}2\right\}$

4 0

3 years ago

The cost of renting ice skates at a skating rink is $1.25. The rink charges $3.25 for each hour, x, of skating. Which graph best

posledela

Answer:

Step-by-step explanation:

Since the total cost at first will not be 5 exactly, it will turn to 4.5 (4.50). And it will be just below the five, at the first hour. And then from there, just add 3.25 each hour and forget about the 1.25 since 1.25 is used for the beginning only, and not the rest.

-By Shamaria Vaughn.

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3 years ago

Read 2 more answers

How many steps does Jamila need to take to walk 120 ft?

KIM [24]

48 steps........ i just know lol

7 0

3 years ago