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nlexa [21]
3 years ago
7

PLEASE HELP ME ON THIS ONE​

Mathematics
2 answers:
saveliy_v [14]3 years ago
8 0

Step-by-step explanation:

7×4=28. 3×14=42. the area is 70. 28+42=70. my guess

dalvyx [7]3 years ago
5 0

Answer:

Total area = 70 sq. km

Step-by-step explanation:

We can make it into 2 parts.

Down part)

It is rectangle ;length = 14 km

width = 3 km

Area = length * width

         = 14 * 3 = 42 sq. km

Above part)  It is rectangle

length = 7 km

width = 4km

Area = length * width

          = 7 * 4

           = 28 sq. km

Total area = 42 + 28 = 70 sq. km

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3 years ago
If the 4th and 7th terms of a GP are 250 and 31250 respectively. Find the two possible values of a and r
Over [174]

Answer:

a = 2, r = 5

Step-by-step explanation:

Nth term of a GP = a×r^(n-1)

Where 'a' is the first term and 'r' is the common ratio

4th term = a×r^3 = 250

r^3 = 250/a

7th term = a×r^6 = 31250

a×r^6 = 31250

a×(r^3)^2 = 31250

a×(250/a)^2 = 31250

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since r^3 = 250/a,

r^3 = 250/2 = 125

r = (125)^(1/3)

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Slav-nsk [51]

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G(x)=-x^2/4 +7<br> Over which interval does g have a negative average rate of change?
Sholpan [36]

Answer:

x = 49

Step-by-step explanation:

1- Substitute g ( x ) = 0

Reduce

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2- Move the variable to the left

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3- Simplify the equation

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