3 years ago

Find an explicit formula for the arithmetic sequence -5,13,31,49,...

Mathematics

1 answer:

nadezda [96]3 years ago

6 0

Step-by-step explanation:

b(n) = b(1) + (n-1) d, where d is the difference,

d = 13-(-5) = 18

b(n) = (-5) + (n-1)(18)

= -5 +18n -18

b(n) = 18n -23

You might be interested in

Solve the equation. |4r - 16| = 12<br> i need help asap

soldi70 [24.7K]

I believe the answer is 7

3 0

4 years ago

Find the mode of the data.

mixer [17]

The mode is a term that is repeated the most.
And the one which is the repeated is 30.

6 0

4 years ago

If you spend $99.79, in how many ways can you receive change from a one hundred-dollar bill?

MAXImum [283]

Answer:

3 different ways

Step-by-step explanation:

100 - 99.79 = 0.21

.21 = 2 dimes and 1 penny

.21 = 4 nickels and 1 penny

.21 = 1 dimes, 2 nickels and 1 penny

3 0

3 years ago

Find the area of a trapezoid Q Is 4 cm S is 7 cm are is 3 cm

a_sh-v [17]

Answer:67

Step-by-step explanation:

7 0

3 years ago

Find the measure of ∠C if ∠A = 3 2 x + 20 ∠B = 7 2 x + 20 ∠C = 5 2 x + 40 ∠D = 3 2 x + 10 A) 65° B) 76° C) 95° D) 115°

Rudiy27

The sum of the angles of a quadrilateral is 360°.
$\left(\dfrac{3}{2}x+20\right)+\left(\dfrac{7}{2}x+20\right)+\left(\dfrac{5}{2}x+40\right)+\left(\dfrac{3}{2}x+10\right)=360\\\\9x+90=360\\\\x=\dfrac{270}{9}=30$

Given that x=30, the measure of ∠C is
∠C = (5/2)×30 +40 = 115

The appropriate choice is ...
D) 115°

5 0

4 years ago

Read 2 more answers