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allochka39001 [22]
3 years ago
11

Please help please??i need this doneee please

Mathematics
2 answers:
goldfiish [28.3K]3 years ago
4 0

Answer:

18.84

Step-by-step explanation:

Arc length = r × theta

4 × 3pi/2

4 × 3 × 3.14/2

18.84

dolphi86 [110]3 years ago
3 0

Answer:

6pi

Step-by-step explanation:

First find the circumference of the entire circle

C = 2*pi*r

C = 2*pi*4

C = 8pi

We have 3/4 of the circle so multiply the circumference by the fraction of the circle

3/4*8pi

6pi

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Determine the correct scientific notation form of the number. 327,000,000,000
aalyn [17]

So this "327,000,000,000" needs to be converted into scientific notation, in which the answer that I will get would be 3.27 10^11, in calculation (as in calculator), you will get 3.27E+11.

Hope this helped!

Nate

7 0
3 years ago
Isabelle is mixing red paint with blue paint to make purple paint. She adds 3/10 of a fluid ounce of red to 11/15 of a fluid oun
MAXImum [283]
40\13 that what she needs
6 0
3 years ago
Read 2 more answers
Evaluate.<br><br><br> 2 • {390 – [5 • (10 – 4 ÷ 2)] + 15} • 2
otez555 [7]
The correct answer is 1460

8 0
3 years ago
Two students, Carlos and Sophie, factored the trinomial -4x2 − 10x + 6. Sophie factored it as -2(2x − 1)(x + 3) and Carlos facto
damaskus [11]

Sophie has factored the term completely while Carlos has not factored the term completely.

Step-by-step explanation:

We need to factor the trinomial:

-4x^2-10x + 6

Factoring:

-4x^2-10x + 6\\Taking\,\,-2\,\,common:\\-2(2x^2+5x-3)\\Now\,\,factoring:\\-2(2x^2+6x-x-3)\\-2(2x(x+3)-1(x+3))\\-2(2x-1)(x+3)

So, the factored form of -4x^2-10x + 6 is -2(2x-1)(x+3)

So, Sophie has factored the term completely. The terms are factored when we cannot further simplify it. Since Carlos factored (x+3)(-4x+2) 2 can be taken common from the term (-4x+2) so, it is not factored completely.

Keywords: Factoring the terms

Learn more about Factoring the terms at:

  • brainly.com/question/1464739
  • brainly.com/question/1464739
  • brainly.com/question/2568692

#learnwithBrainly

7 0
3 years ago
Phyllis invested 50000 dollars, a portion earning a simple interest rate of 5 percent per year and the rest earning a rate of 7
Elodia [21]

Answer:

The amount invested at 5% was $39,000 and the amount invested at 7% was $11,000

Step-by-step explanation:

we know that

The simple interest formula is equal to

I=P(rt)

where

I is the Final Interest Value

P is the Principal amount of money to be invested

r is the rate of interest  

t is Number of Time Periods

Let

x-----> the amount invested at 5%

50,000-x -----> the amount invested at 7%

so

t=1\ year\\ I=\$2,720\\r_1=0.05\\r_2=0.07\\P_1=\$x\\P_2=\$(50,000-x)

substitute in the formula above

2,720=x(0.05*1)+(50,000-x)(0.07*1)

solve for x

2,720=0.05x+3,500-0.07x

0.07x-0.05x=3,500-2,720\\0.02x=780\\x=\$39,000

(50,000-x)=\$11,000

therefore

The amount invested at 5% was $39,000 and the amount invested at 7% was $11,000

5 0
3 years ago
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