All categories

3 years ago

Identify the property of equality that justifies the missing step in solving the equation below

Mathematics

1 answer:

PtichkaEL [24]3 years ago

5 0

Answer:

property of equality that justifies the missing step is Division property of equality

Step-by-step explanation:

We need to Identify the property of equality that justifies the missing step

$28=4x-8\\28+8=4x\\36=4x$

Now, we divide both sides by 4 using division property of equality as it states that $\frac{a}{c}=\frac{b}{c}$

$\frac{36}{4}=\frac{4x}{4}\\9=x$

So, The property of equality that justifies the missing step is Division property of equality

You might be interested in

PLEASE HELP WITH QUESTION, MARKING BRAINLIEST + POINTS!!!

JulijaS [17]

1. This is a very easy question as you can just plug in 2 x-values and get the y-value, run a line through it, and you are done.

For example,
x = 2t
x = 2(2) = 4
x = 2(3) = 6

Now, you know there are points at (2, 4) and (3, 6).

2. This one is a little tricky, but all it's saying is that it has a specified domain. The parametric equation only works for values -2 ≤ t ≤ 3. So, you can do the exact same thing, except your line will only exist for points through the x-values -2 and 3. Let's plug in numbers:

y = t + 5
y = -2 + 5 = 3
y = 1 + 5 = 6

Now you know that this line runs through (-2, 3) and (1, 6). Remember, your line starts at -2 and ends at 3. It can't go any further than that.

8 0

3 years ago

N<br> What is the range for this set of data?<br> 38, 17, 55, 40<br> оооо

Alex_Xolod [135]

Answer:

range = 55-17

= 38

Step-by-step explanation:

to find the range, subtract the smaller number in the data from the bigger number.

6 0

4 years ago

A company that makes hair-care products had 9 comma 000 people try a new shampoo. Of the 9 comma 000 people, 72 had a mild all

Olegator [25]

Answer:

The percent of people with mild allergic reaction is 0.8%

Step-by-step explanation:

The company has 9000 people, and 72 people have mild allergic reaction.

The fraction of people with mild reaction is 72 over 9000, i.e. 72/9000

72 and 9000 are multiple of 9, therefore reducing both by 9, we will have 8/1000.

8 and 1000 are both multiple of 4, so we will reduce both by 4, we will have

2/250.

2/250 can still be reduced by to, therefore we will have 1/125

To get the percentage, we will now multiply the fraction 1/125 by 100, we will have 100/125

Reduce both 100 and 125 by 25 which will make 4/5

then, turning 4/5 to decimal, we will have 0.8%

Therefore 0.8% of people had a mild allergic reaction

8 0

4 years ago

The total cost, including shipping, for ordering five uniforms is $61. The total cost, including shipping, for ordering nine uni

Tems11 [23]

Answer:39/4

Step-by-step explanation: What I'd do first is set the question up as an ordered pair, for example (x,y) have the uniforms be represented by x and the cost be represented by y. We know that the cost of five uniforms is $66, so we can substitute (x,y) into (5,66). We can then do the same for nine uniforms which is 105 (9,105). The equation we are going to use to find the slope is y2-y1/x2-x1 = 105-66/9-5.

This should result in 39/4. Make sure to always simplify when needed, in this case we don't have to.

Hope this helped.

6 0

4 years ago

-9+6-(-2)= Evaluate the expression

Sunny_sXe [5.5K]

Answer:

Step-by-step explanation:

do the stuff inside the parentheses

*double negatives become positives*

6*2=12

-9+12

pls mark me brainliest

3 0

4 years ago

Identify the property of equality that justifies the missing step￼ in solving the equation below

Identify the property of equality that justifies the missing step in solving the equation below