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Alona [7]
3 years ago
13

Need help with this math problem please??

Mathematics
1 answer:
Snezhnost [94]3 years ago
3 0
4 units out of 9 total units = 4/9

Answer: d
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Sandra saves 9% of her salary for retirement this year salary was 1000 more than in her previous year and she saved $4050 what w
allochka39001 [22]

Answer:

$44,000

Step-by-step explanation:

The statement indicates that Sandra saves 9% of her salary and she saved $4,050 this year. That means that the 9% of her salary, x, is equal to $4,050. You can write the following:

x*0.09= 4,050

Now, you can isolate x to find her salary this year:

x=4,050/0.09= 45,000

Then, you have that this year salary was 1000 more than in her previous year. As you have found her salary for this year, you can subtract 1,000 from it to find her salary in the previous year:

45,000-1,000= 44,000

According to this, the answer is that her salary in the previous year was $44,000.

5 0
3 years ago
Factor -4 + 8a - 4a^2
tatiyna

Answer: 4(−a+1)(a−1)

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Whats the circumference of a circle with a radius of 21 meters
Bogdan [553]

Answer:

C =131.88 meters

Step-by-step explanation:

The circumference of a circle is given by

C = 2*pi*r

where r is the radius

C = 2 * pi * 21

C = 42 pi

If we approximate pi by 3.14

C = 42(3.14)

C =131.88 meters

7 0
3 years ago
Read 2 more answers
Please help I don’t understand
Sauron [17]

Answer:

-1.96312>-2.2360

Step-by-step explanation:

first find -\sqrt{5}\\

which is -2.2360679775

now round it to match the lenth of the other problem

-1.96312...

-2.2360...

now remember that the bigger the negitive number, the smaller it really is,

so

-1.96312>-2.2360

7 0
2 years ago
Read 2 more answers
Factorize 81xsquared+180x+100
bekas [8.4K]

Answer:

  • 81x²+180x+100
  • 9x²+180x+10²
  • using (a+b)²=a²+b²+2ab
  • 9x²+2(9x)(10)+10²
  • (9x+2)²=(9x+2)(9x+2)
5 0
2 years ago
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