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4 years ago

Please help ASAP Questions 1 and 2 plzzzzz

Mathematics

1 answer:

liubo4ka [24]4 years ago

5 0

Take the sequence in 1a

The 10th term is 31

The 20th is 61

If you wanted to find these by continuing the series, you'd have to add 3 to the last number in the series, then 3 more, then 3 more, until you reach the 20th term. By this point, you will have added 3 to the first term 19 times. That's where the formula comes from. So here,

a = 4, the first term

n = 20, the number of the term we need

d = 3, how much we're adding each time between one term and the next

Then, to get the 20th term,

4 + (20 - 1) • 3 = 4 + (19 • 3) = 4 + 57 = 61

Answers

The 10th and 20th terms of each sequences are

a. 31; 61

b. 48; 98

c. 47; 97

(in <em>c</em>, you're adding the same <em>d</em> as in the sequence above, but your first term is one unit less)

d. -25; -75

(same thing as before, but now, <em>d</em> is negative)

e. 11.5; 16.5

(with <em>d</em>=1/2 or 0.5)

f. 6+1/2; 8+1/2

Use these to check your answers after applying the formula, but know that I calculated on the fly and didn't check these.

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4 years ago

Pocahontas wants to buy a tennis racket that is 70% off. The original price is $156.33. What is amount of discount (nearest penn

fenix001 [56]

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3 years ago

An animal shelter spends $1.50 per day to care for each bird and $3.50 per day to care for each cat. Elijah noticed that the she

Blizzard [7]

Answer:

Number of birds = 13

Explanation:

An animal shelter spends $1.50 per day to care for each bird and $3.50 per day to care for each cat.

Let the number of bird be 'a' and number of cat be 'b'.

Total money spent = 103.5

1.5 a + 3.5 b = 103.5 ------------------------equation 1

Total number of birds and cats = 37

a + b = 37 ------------------------equation 2

1.5 x equation 2

1.5 a + 1.5 b = 55.5 ------------------equation 3

equation 1 - equation 3

2 b = 103.5 - 55.5 = 48

b = 24

Substituting in equation 2

a = 37 - 24 = 13

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5 0

3 years ago

Need help due tonight v

Yuri [45]

Answer:

number 2

Step-by-step explanation:

from the original equation you can multiple the m to the x's first.

y-y1=mx-mx1

if you moved mx1 to left the sign will change from - to +

so you y- y1+mx1= mx

then to get x

(y- you + mx1 )/ m = x

hope it helps

7 0

3 years ago

Russell has $38 and is saving $2 per day. cornelius has $64 and is spending $2 per day. after how many days will russell have mo

stira [4]

The equation be 38 + 2x - (64 - 2x) = 0 then the value of x = 6.5.

<h3>How to find the value of x?</h3>

To estimate the value of x, bring the variable to the left side and bring all the remaining values to the right side. Simplify the values to estimate the result.

Let the day be x

38 + 2x - (64 - 2x) = 0

Subtract 38 from both sides

38 + 2x - (64 - 2x) - 38 = 0 - 38

Simplifying the above equation, we get

2x - (64 - 2 x) = -38

Expanding the above equation, 2x - (64 - 2x) = 4x - 64

4x - 64 = -38

Add 64 to both sides

4x - 64 + 64 = -38 + 64

Simplify

4x = 26

Divide both sides by 4

$$\frac{4 x}{4}=\frac{26}{4}$

Simplifying the equation

$$x=\frac{13}{2}$

The value of x = 6.5.

To learn more about the value of x refer to:

brainly.com/question/12862290

#SPJ4

3 0

2 years ago