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olga55 [171]
3 years ago
13

What equivalent expression was used 3y+4y​

Mathematics
2 answers:
Irina18 [472]3 years ago
8 0

Answer:

7y²

Step-by-step explanation:

First u group them like 4+3+y+y=7y²

timama [110]3 years ago
8 0
3y+4y is equivalent to 7yto two
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Can someone help me? I know I'm doing something wrong but I'm not sure what.
Natasha2012 [34]

Answer:

Step-by-step explanation:

CI = 624 x 1.05 ^3 =722.358 for whole investment   722.36-624 =98.36 for interest only

or for interest only do 624 x .05^3 = 98.36

Standard interest is done like this

year 1 = 624 x 1.05 = 655.20

655.20-624 = 31.20

year 2 = 655.20 + 31.20 = 686.40

year 3 = 686.40 + 31.20 = 717.60

total interest = 717.60-624 = 93.60

So standard interest is the method you have done they may be asking for either compound interest which is the first one or asking for whole investment which means you need to also add 624 at end for Standard interest.

if you need CI interest do the top one.

8 0
3 years ago
5+3.2n-4.8n=simplify the expression
dmitriy555 [2]

Answer:

5-1.6n

Step-by-step explanation:

5+3.2n-4.8n=5-1.6n

8 0
3 years ago
Determine whether the pair of equations represent parallel lines, perpendicular lines, or neither.
Ivahew [28]

Answer:

Parallel

Step-by-step explanation:

Parallel lines have the same slope but different y-intercepts. If you multiply the top equation by 2, you get:

2(12x + 4y = 16)

24x + 8y = 32

This shows that both lines have the same slope, but then you find the y-intercepts, they are different:

1st equation y-int = 4

2nd equation y-int = 9/2 or 4.5

6 0
3 years ago
1. r - 29 = -2r + 19
Sphinxa [80]

Answer: r=16

Step-by-step explanation:

r-29=-2r+19

r=−2r+19+29

r=−2r+48

r+2r=48

3r=48

r=48/3

r=16

Hope this helps, now you know the answer and how to do it. HAVE A BLESSED AND WONDERFUL DAY! As well as a great Valentines Day! :-)  

- Cutiepatutie ☺❀❤

7 0
3 years ago
What 's the radius of a circle with an area of 64 square feet
SVEN [57.7K]

Answer:

5.09 ft

Step-by-step explanation:

Use the formula 4πr^2 = 64

6 0
4 years ago
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