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2 years ago

Consider the sequence: -7, -2, 3, 8…. What is f(7)?

Mathematics

1 answer:

wlad13 [49]2 years ago

5 0

You are adding by 5 in the sequence.
If f(1) is -7
f(2) = -2
f(3)= 3
f(4)=8
f(5)=13
f(6)=18
Therefore, f(7)=23

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9.5x - 2.5 for x = 9 What is the solution

Oksana_A [137]

Just substitue $9$ for $x$ in the expression.

$= 9.5(9) - 2.5$

$= 85.5 - 2.5$

$= 83$

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2 years ago

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Need help on 7,8,9,10,11 and 12 DUE TOMORROW

Dennis_Churaev [7]

7) (12 + 6)/(2 +4)
(18)/(6) = 3

8) (42 - 24)/6
(18)/6 = 3

9) (9 + 16) - (2 x 4)
25 - 8 = 17

10) 60 - (3 + 2) x 5
60 - 5 x 5
60 - 25 = 35

11) 18 + (9/3)
18 + 3 = 21

12) 5 x (2 + 4 + 3)
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3 years ago

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For every quarter he spends, Reggie receives 50 food pebbles to feed the fish. Reggie has thrown 350 food pebbles into the fish

deff fn [24]

Answer:

7 quarters are spent for throwing 350 food pebbles in pond.

Step-by-step explanation:

Given:

Reggie receives 50 food pebbles for every quarter he spends.

Number of food pebbles he has = 350

Let the number of quarters spent for 350 pebbles be 'x'.

Now, using proportion and cross multiplication method, we can find 'x'.

1 quarter is equivalent to 50 pebbles thrown in pond.

So, 'x' quarters is equivalent to 350 pebbles thrown in pond.

$\frac{1}{50}=\frac{x}{350}\\\\Cross\ multiplying\\\\50x=350\\\\x=\frac{350}{50}\\\\x=7$

So, 7 quarters are spent for throwing 350 food pebbles in pond.

6 0

2 years ago

How to solve the exponential equation for 3^k2 • 3^-k+2 = 81

wariber [46]

Answer:

k=2

Step-by-step explanation:

3^k*2 * 3^-k+2 = 81

Factor out 81 to be : 3^4

Rewrite the equation:

k*2 - k+2 = 4

k^2 - 2k = 4

Simplify : k+2 = 4

- 2 - 2

k = 2

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2 years ago

PLS HELP I WILL GIVE BRAINLY THINGY

VashaNatasha [74]

Answer: The y is going to be 7

Explanation: Because 5y/35 divide 5 both sides cancel the both 5's and y stays by itself and 35/5 equals 7. 7*5= 35

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3 years ago