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2 years ago

Could someone please help me :) its easy I think - not to me though...

Mathematics

1 answer:

lara [203]2 years ago

3 0

Lets find the unit rate of both of the shirts.

5 for 63

4 for 54

63/5 = 12.60

54/4 = 13.50

Now we have our unit rates!

Greg = $12.60 per shirt
Zachary = $13.50 per shirt

Greg's shirt were cheaper than his brothers, so it has a better cost.

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The first number of three consecutive even integers equals the sum of the second and third. Find the three numbers.

Arlecino [84]

The first integer (x) is equal to the consecutive even integers, x+2, x+4.

x = (x+2) + (x+4)

x = 2x + 6

x - 6 = 2x

x = -6 (First integer)

-4 (Second integer)

-2 (Third integer)

Integers: -6, -4, -2

Equation: x = (x+2) + (x+4)

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worty [1.4K]

Answer:

Step-by-step explanation:

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2 years ago

What is the 23rd term of the arithmetic sequence where a1 = 8 and a9 = 48?

joja [24]

Answer:

23rd term of the arithmetic sequence is 118.

Step-by-step explanation:

In this question we have been given first term a1 = 8 and 9th term a9 = 48

we have to find the 23rd term of this arithmetic sequence.

Since in an arithmetic sequence

$T_{n}=a+(n-1)d$

here a = first term

n = number of term

d = common difference

since 9th term a9 = 48

48 = 8 + (9-1)d

8d = 48 - 8 = 40

d = 40/8 = 5

Now $T_{23}= a + (n-1)d$

= 8 + (23 -1)5 = 8 + 22×5 = 8 + 110 = 118

Therefore 23rd term of the sequence is 118.

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3 years ago

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