2 years ago

Please help!! Giving brainliest and extra points!

Mathematics

1 answer:

alexgriva [62]2 years ago

6 0

Answer:

radius of circle is 11 cm

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(-5i)(-3i) ASAP!!! Brainlest <br> Solving quadratic equations<br> Simply

yKpoI14uk [10]

Answer:

15i^2

Step-by-step explanation:

a negative times a positive is a negative and a negative times a negative is positive

-5×-3=15 and i×i=i^2

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2 years ago

Annalise charges a certain rate per hour to tutor. The number of hours she tutored last week are listed below. Monday 3.5 hours,

jeyben [28]

31.5 hours for $135
$135 \div 31.5 = 4.286$
Annalise charges about 4.29 per hour.

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3 years ago

1000 was invested at 5.5% interest, compounded annually. After sometime the amount had grown to 1550. How long was the money inv

scZoUnD [109]

compound interest equation for annually compounded

$A=P(1+r)^t$

A=final amount

P=principal

r=rate in decimal

t=time in years

given that

A=1550

P=1000

r=5.5%=0.055

find t

$1550=1000(1+0.055)^t$

divide both sides by 1000

$1.55=1.055^t$

take ln of both sides

$ln(1.55)=ln(1.055^t)$

use ln rule $ln(a^b)=b(ln(a))$

$ln(1.55)=t(ln(1.055))$

divide both sides by ln(1.055)

$\frac{ln(1.55)}{ln(1.055)}=t$

using a calculator, we get that t=8.18544 yrs

so about 8.2yrs

4 0

2 years ago

What is the relationship between the segments PQ and P’Q’

cupoosta [38]

Answer:

$\frac{PQ}{P'Q'}=2.5$

Step-by-step explanation:

we know that

If two figures are similar, then the ratio of its corresponding sides is equal

In this problem Triangles OQP and OQ'P' are similar by AA Similarity Postulate

$\frac{PQ}{P'Q'}=\frac{OP}{OP'}$

we have

$OP=12-2=10\ units$

$OP'=6-2=4\ units$

substitute

$\frac{PQ}{P'Q'}=\frac{10}{4}=2.5$

5 0

3 years ago

.......................

Step2247 [10]

Answer:

32 degrees

Step-by-step explanation:

If lines r and t are parallel then it would be 180-148

3 0

2 years ago