What does a siren have a lower pitch

!!!!!(Help me please)!!!!!

Zarrin [17]

okey no i don't speak english jsjsj ._.

4 0

2 years ago

Read 2 more answers

Carson uses cubes to make a pattern of shapes. The first shape has a height of

KIM [24]

Answer:

The length of each shape will alternate between even numbers and odd

numbers.

Step-by-step explanation:

A cube is a 3 dimensional object that has equal length, width and height. It is has area of a cube.

Carson uses 2 cubes for the height and length for a start. He adds 1 cube to the length and height with respect to each stage. Since the length of each cube is the same, then consistent addition increases the length by same factor.

The length of each cube equals 1 unit, then he starts with 2 (length equals 2 units), next stage add 1 to make up 3(length equals 3 units). He add another 1 more for another stage to make up 4 (length equals 4 units)... This addition continues depending on the number of stages required.

Therefore, it can be deduced that the length of each shape will alternate

between even numbers and odd numbers.

8 0

2 years ago

10 pounds of rice are distributed equally into 6 bags to give out at the Food Bank. how many pounds of rice are in each bag

Usimov [2.4K]

You would divide 10/6. Your answer would be 1.66

6 0

3 years ago

Chiko bought 75 shares of stock at $19.58 per share. He received dividends of $73.42 during the year. At the end of the year, hi

alekssr [168]

Answer:

nm vbjh gbj vjhcvggh

Step-by-step explanation:

8 0

2 years ago

Juan and Lizzy are in the final week of their training for a marathon. Juan's goal is to run one mile on the first day of the we

miss Akunina [59]

Answer:

1. Juan's marathon training schedule is an example of a geometric sequence

2. Lizzy's marathon training schedule is an example of an arithmetic sequence

3. Lizzy will be better prepared for the marathon

Step-by-step explanation:

In the arithmetic sequence there is a common difference between each two consecutive terms

In the geometric sequence there is a common ratio between each two consecutive terms

Juan's Schedule

∵ Juan's will run one mile on the first day of the week

∴ $a_{1}$ = 1

∵ He will double the amount he runs each day for the next

6 days

- That means he multiplies each day by 2 to find how many miles

he will run next day

∴ $a_{2}$ = 1 × 2 = 2 miles

∴ $a_{3}$ = 2 × 2 = 4 miles

∴ $a_{4}$ = 4 × 2 = 8 miles

∴ $a_{5}$ = 8 × 2 = 16 miles

∴ $a_{6}$ = 16 × 2 = 32 miles

∴ $a_{7}$ = 32 × 2 = 64 miles

That means there is a common ratio 2 between each two consecutive days

1. Juan's marathon training schedule is an example of a geometric sequence

Lizzy's Schedule

∵ Lizzy's will run 10 miles on the first day of the week

∴ $a_{1}$ = 10

∵ She will increase the amount she runs by 3 miles each day for

the next six days

- That means she adds each day by 3 to find how many miles

she will run next day

∴ $a_{2}$ = 10 + 3 = 13 miles

∴ $a_{3}$ = 13 + 3 = 16 miles

∴ $a_{4}$ = 16 + 3 = 19 miles

∴ $a_{5}$ = 19 + 3 = 22 miles

∴ $a_{6}$ = 22 + 3 = 25 miles

∴ $a_{7}$ = 25 × 3 = 28 miles

That means there is a common difference 3 between each two consecutive days

2. Lizzy's marathon training schedule is an example of an arithmetic sequence

The rule of the sum of nth term in the geometric sequence is $S_{n}=\frac{a_{1}(1-r^{n})}{1-r}$

∵ $a_{1}$ = 1 , r = 2 and n = 7

∴ $S_{7}=\frac{1(1-2^{7})}{1-2}$

∴ $S_{7}$ = 127

∴ Juan will run 127 miles in the final week

The rule of the sum of nth term in the arithmetic sequence is $S_{n}=\frac{n}{2}[a_{1}+a_{n}]$

∵ n = 7, $a_{1}$ = 10 and $a_{7}$ = 28

∴ $S_{7}=\frac{7}{2}(10+28)$

∴ $S_{7}$ = 133

∴ Lizzy will run 133 miles in the final week

∵ 133 miles > 127 miles

∴ Lizzy will run more miles than Juan

3. Lizzy will be better prepared for the marathon

7 0

2 years ago