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dybincka [34]
3 years ago
15

Please helpppppppppp

Mathematics
1 answer:
GaryK [48]3 years ago
7 0

Answer:

D

Step-by-step explanation:

Count the number of places it takes to get one place past  3

There are 5 zeros in the given question. That gets you to just before the 3.

Add one more to get past the 3. That makes 5 zeros + 1 more place = 6

Since you are moving right, the 6 is minus. Your answer is 3 * 10^-6

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If the typical balance on Lucy's credit card is $650 and the interest rate (APR) on her credit card is 18%, how much in interest
mafiozo [28]

General Idea:

Amount \; Charged \; in \; a \; Month \; = \; Monthly \; Interest \; Rate \; \times Typical \; Creditcard\; Balance\\ \\

Amount \; Charged \; in\; a\; month =\frac{18\%}{12} \times 650 \; = 0.015\times650=9.75

Conclusion:

Amount of interest that Lucy to be charged in a typical month is <u>$9.75</u>

7 0
3 years ago
Read 2 more answers
In the right triangle ?ABC, leg AC=6 cm and leg BC=8 cm. Point M and N belong to AB so that AM:MN:NB=1:2.5:1.5. Find area of ?MN
Licemer1 [7]

Given : In Right triangle ABC, AC=6 cm, BC=8 cm.Point M and N belong to AB so that AM:MN:NB=1:2.5:1.5.

To find : Area (ΔMNC)

Solution: In Δ ABC, right angled at C,

AC= 6 cm, BC= 8 cm

Using pythagoras theorem

AB² =AC²+ BC²

      =6²+8²

     = 36 + 64

→AB²  =100

→AB²  =10²

 →AB  =10

Also, AM:MN:NB=1:2.5:1.5

Then AM, MN, NB are k, 2.5 k, 1.5 k.

→2.5 k + k+1.5 k= 10

→ 5 k =10

Dividing both sides by 2, we get

→ k =2

MN=2.5×2=5 cm, NB=1.5×2=3 cm, AM=2 cm

As Δ ACB and ΔMNC are similar by SAS.

So when triangles are similar , their sides are proportional and ratio of their areas is equal to square of their corresponding sides.

\frac{Ar(ACB)}{Ar(MNC)}=[\frac{10}{5}]^{2}

\frac{Ar(ACB)}{Ar(MNC)}=4

But Area (ΔACB)=1/2×6×8= 24 cm²[ACB is a right angled triangle]

\frac{24}{Ar(MNC)}=4

→ Area(ΔMNC)=24÷4

→Area(ΔMNC)=6 cm²

4 0
3 years ago
For two weeks the school librarian recorded the number of library books returned each morning. The data are shown in the dot plo
Veronika [31]
The mean that the library and calculated is not correct. Her mistake was she divided 55 by 8 instead of dividing by 10.

Please see the attached picture for the work in finding the correct mean of 5.5 books.

8 0
3 years ago
Give me the full working and I give you stars ​
kari74 [83]

→ Area of rectangle = Length * Width

Here given:

  • Length = 63 m
  • Width = 17 m

Here area:

  • L * W
  • 63 * 17
  • 1071 m²
4 0
2 years ago
Read 2 more answers
Franco read 5/8 of a chapter of his history book in 2/5 of an hour. At this rate, how many chapters of his history book can he r
LenKa [72]

Answer:

12.5/8 or 1  4.5/8 so the simplified answer could be 1 2.25/4

Step-by-step explanation:

multiply 5/8 by 2.5 becuase 2x2.5=5

so you want to get 5/5 for a full hour

5x2.5=12.5 and keep the donominator the same

then simplify so 1 4.5/8

please mark brainliest:D

7 0
2 years ago
Read 2 more answers
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