Due urgently if not done I’m gonna failllll Pre-Algebra Due TODAY

Mathematics

2 answers:

Westkost [7]1 year ago

4 0

2v+7=3
2v=3-7
2v=-4
v=-4:2=>v=2

4b+3=-9
4b=-9-3
4b=-12
b=-12:4=> b=-3

17=5k-2
17+2=5k
19=5k
k=19:5
k=3.8

-6t-7=17
-6t=17+7
-6t=24
t=24:(-6)
t= -4

8n + 16.2=1.6
8n=1-6-16.2
8n=-14.6
n=-14.6:8
n=-1.8

-5g+2.3=-18.8
-5g=-18.8-2.3
-5g=-21.1
g= -21.1:(-5)
g=4.2

2t-5=-10
2t=-10+5
2t=-5
t=-5:2
t=-2.5

-4p + 9=-5
-4p=-5-9
-4p=-14
p=-14:(-4)
p= 3.5

11=5x-2
11+2=5x
13=5x=>5x=13
x=13:5
x=2.6

4+2.2h=-3.7
2.2h=-3.7-4
2.2h=-7.7
h=-7.7:2.2
h=-3.5

-4.8f+6.4=-8.48
-4.8f=-8.48-6.4
-4.8f=-14.88
f= -14.88:(-4.8)
f=3.1

7.3y-5.18=51.9
7.3y=51.9+5.18
7.3y=57.08
y=57.08:7.3
y=7.8

Oduvanchick [21]1 year ago

3 0

Answer:

x = -2

Step-by-step explanation:

2x + 7 = 3

Cancel the 7 by subtracting from both sides

2x + 7 - 7 = 3 - 7

2x = -4

2x / 2 = -4 / 2

x = -2

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OleMash [197]

Yes. Changing the the word problem into a function, you get 30x=y.

30 = Fixed Length

x = width

y = area

No matter what width (x) you choose, the area (y) is going to be a multiple of 30 (the fixed length) because with two numbers being multiplied, if there is a fixed number that will always be the multiple and not the multiplier. For example, 10 multiplied by every number 1-10 is going to be a multiple of 10.

10x1=10, 10x2=20, 10x3=30, etc

So if Tom chooses any of these widths (x) 5, 10, or 15, y (the area) will be a multiple of 30.

30(5)=150

30(10)=300

30(15)=450

So as we double 5 to get 10, our outcome is doubled 150 to 300 and so forth. Hope this helps.

7 0

3 years ago

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Marianna [84]

10×4,000=40,000 because all u do is add an extra zero everything you multiple something by ten

5 0