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Mazyrski [523]
3 years ago
11

Help please answer fast!!!

Mathematics
1 answer:
Alenkinab [10]3 years ago
6 0
I think it’s 4.5
Hope this helps
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(a) The weight of a package affects the cost to send that package through the mail.
skelet666 [1.2K]

Answer:

<u>cost to mail package</u>

Step-by-step explanation:

the weight is not dependant on the cost to mail the package

the cost depends on how much the package weighs.

7 0
3 years ago
Simplify the following expression:<br> 3[(x^3– 7 x + 1) – (x+ 4)]
Alona [7]

Answer:

15 - 9

Step-by-step explanation:

3[( 3x - 7x plus 1) - (x plus 4)]

3[(-4x plus 1) - x-4

3[-4x plus 1 -x-4

3[-4x-x plus 1-4]

3[fivex -3]

fifteen x - 9

5 0
3 years ago
David and Ashley want to calculate $8.27 – $2.98 by first calculating $8.27 – $3 = $5.27. David says that they must subtract $0.
Ierofanga [76]

Number lines are used to represent numbers on a line at a regular interval.

<em>David's statement is correct, while Ashley is incorrect</em>

The expression is given as:

\mathbf{8.27 - 2.98}

<u>Using number lines</u>

The end result on David's number line is 5.29, while the end result on Ashley's number line is 5.25

The correct result of the expression \mathbf{8.27 - 2.98} is 5.29 shows that David is correct

See attachment for the number lines that illustrate <em>David and Ashley's statements</em>

<u>Another way</u>

David's statement can be expressed as:

\$8.27 - \$3 - \$0.02 = \$5.29

While, the expression for Ashley's expression is:

\$8.27 - \$3 + \$0.02 = \$5.25

The original expression is:

\$8.27 - \$2.98 = \$5.29

By comparing the above expressions, we can conclude that <em>David is correct</em>

Read more about number lines at:

brainly.com/question/18611090

4 0
3 years ago
{8x-10y=20 and -7x+10y-20
lidiya [134]

Write the equations:

8x-10y=20

-7x+10y=20

Add them using elimination

x=40

Now solve for y

8(40)-10y=20

10y=300

y=30

So there you have it: x=40, y=30.

8 0
4 years ago
What is the solution to this system of linear equations?y − 4x = 72y + 4x = 2(3, 1)(1, 3)(3, −1)(−1, 3)
Setler79 [48]

If im understanding your post this is what i get


y − 4x = 72

+ y + 4x = 2

_________


2y= 74


Y= 72/2


Y= 36


y − 4x = 72

35-4x=72


-4x=72-35


-4x=37


X= 37/-4


X= - 37/4 or -9.25


Answer in point (-37/4, 36)

5 0
3 years ago
Read 2 more answers
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