3 years ago

Find an explicit formula for the arithmetic sequence -2,-14,-26,-38,...

Mathematics

1 answer:

slava [35]3 years ago

6 0

Answer:

-12

Step-by-step explanation:

We can just try and find what works! since we can subtract 12 from -2 and get -14, we might try subtracting 12 every time. After we test it out, we see that is is correct!

You might be interested in

Sin^2(alpha) + cos^2(alpha)=? Fast plz sir is asking me rn lol

Crazy boy [7]

Answer:

the answer is 1

hope it helps

4 0

3 years ago

The hourly wage is $7.50. John worked 7 hour. How much did he earn?

serg [7]

Answer:

52.5

Step-by-step explanation:

7.50 x 7

8 0

3 years ago

Please help me with this question image attached

Mumz [18]

Answer: (D) 9

Step-by-step explanation:

This is an isosceles triangle. Since the legs are congruent, then the base angles are congruent.

9x + 3 = 84

- 3 -3

9x = 81

÷9 ÷9

x = 9

8 0

3 years ago

If the diagonal of a square is 11.3 meters approximately what is the perimeter of the square

kupik [55]

Answer:

7.9903

Step-by-step explanation:

If we consider the right angled triangle,

we can use the pythagarus theorem and find the answer.

6 0

3 years ago

Read 2 more answers

Five cupcakes and two cookies cost $19.75. Two cupcakes and four cookies cost $ 17.50.

alina1380 [7]

Answer:

Step-by-step explanation:

Let x and y represent the cost of a cupcake and cookie respectively.

Given that;

Five cupcakes and two cookies cost $19.75.

$5x+2y=19.75 ---------- 1$

Two cupcakes and four cookies cost $17.50.

$2x+4y=17.50 --------------2$

Let's solve the simultaneous equation by elimination;

Multiply equation 1 by 2;

$10x+4y=39.50-------3\\$

Subtract equation 2 from equation 3;

$10x-2x+4y-4y=39.50-8x=22$

$8x=22$

divide both sides by 8

$\frac{8x}{8} =\frac{22}{8} \\x=2.75$

Since we have the value of x, let substitute into equation 1 to get y;

$5x+2y=19.75\\5(2.75)+2y=19.75\\13.75+2y=19.75\\2y=19.75-13.75\\2y=6\\y=\frac{6}{2} \\y=3.00$

therefore , the cost of cupcakes and cookies are;

$cupcakes= 2.75\\cookies= 3.00$

PLEASE MARK ME AS BRAINLIEST

6 0

2 years ago