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vivado [14]
3 years ago
15

I need help on this question

Mathematics
1 answer:
pogonyaev3 years ago
5 0

Answer:

315

Step-by-step explanation:

1. This is not a scale rectangle and it angers me.

2. All you have to do is draw proportions.

5x7=35

15x21=315

Youll notice that 5x3=15 and 7x3=21 so it’s just proportions!

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Consider this sequence: -81.-54, 36, -24....
Murljashka [212]

Answer:

See below in bold.

Step-by-step explanation:

It looks like the third term  should be -36.

The sequence is geometric.

The common ratio is -54/-81 =  -36/-54 = -24/-36 = 2/3 .

The sum of the first 5 terms is

(-81) * (1 - (2/3)^5) / (1 - 2/3)

= -81 * 211/243 * 3

= -211.

         

5 0
3 years ago
I can't seem to figure this out
Ivanshal [37]

Answer:

50

Step-by-step explanation:

→ Evaluate n as 1, 2, 3 and 4 in 5n

5, 10, 15 and 20

→ Find the sum of these numbers

5 + 10 + 15 + 20 = 50

7 0
2 years ago
The surface area of 2 spheres are in ration of 1:16 what is the ratio of their volume
crimeas [40]
S1/S2 = 1/16
Thus R1/R2 = 1/4
So V1/V2 = 1/64
Answer: 1/64
4 0
3 years ago
John's grade increased from a 77 to an 85. What is the approximate percent increase of John's grade
pentagon [3]

Answer:

10.4  hope this help  ;)  77 x 10.4

Step-by-step explanation

turn the 10.4 into .10 then multiply like this

77 x .10 =7.7

77+ 7.7 = 84.7

7 0
3 years ago
Read 2 more answers
The dimensions of a storage container in the shape of a rectangular prism are 54 in x 32.25 in x 24.5 in. Choose True or False f
AlladinOne [14]

GIVEN

the dimensions ofrectangular prism are

length = 54 in

breadth = 32.25in

height = 24.5 in

formula

volume of the rectangular prism = length×breadth×height

                                                   = 54 ×32.25×24.5

                                                   = 42997.5 in³

first statement is false because the volume of the rectangular prism in two significant digit.

Second statement is false because the volume of the rectangular prism in two significant digit.

FORMULA

surface area of a rectangular prism = 2(wl+hl+hw)

by putting the value of the length , breadth & height

we get

= 2 (54×32.25 + 32.25×24.5 + 24.5×54)

= 7709.25 in²

= 7709.3 in²(approx)

Third statement is true the surface area of the container is rounded  to ones place.

Hence proved

3 0
4 years ago
Read 2 more answers
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