-(pi/4)sin(pix/4) solve for x, x >(or equal to) 0 x <(or equal to) 10

Answers

Answer 1

Answer: say y = pi*x/4

we know
sin(y) = 0 at y=0,pi,2piso set up three equationpi x/4 = 0 or pi or 2pi and solve for x

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If 1.3of a gallon of paint covers 1.8
of a wall, how much paint is needed to cover the entire wall?

i need this asapp!

Answers

Answer: pretty sure it is 1 1/2 gallons

Step-by-step explanation:

There are 3 times as many pears are oranges. If a group of children receive 5 oranges each,there will be no left over.If the same group of children receive 8 oranges each, there will be 21 pears left over. How many oranges are there?

Answers

There are 15 oranges

Solution:

Let "x" be the number of oranges

Let "y" be the number of pears

Let "c" be the number of children

There are 3 times as many pears are oranges

Number of pears = 3 times the number of oranges

y = 3x -------- eqn 1

If a group of children receive 5 oranges each, there will be no left over

So, "c" children receives 5 oranges each, there will be no left over

number of oranges = 5(number of children)

x = 5c ------- eqn 2

If the same group of children receive 8 oranges each, there will be 21 pears left over

number of pears = 8 oranges(number of children) + 21

y = 8c + 21

Substitute eqn 1

3x = 8c + 21 ---- eqn 3

Substitute eqn 2

3(5c) = 8c + 21

15c - 8c = 21

7c = 21

c = 3

Substitute c = 3 in eqn 2

x = 5(3)

x = 15

Thus there are 15 oranges

Answer:

15 orangs

Step-by-step explanation:

There are 15 oranges

Solution:

Let "x" be the number of oranges

Let "y" be the number of pears

Let "c" be the number of children

There are 3 times as many pears are oranges

Number of pears = 3 times the number of oranges

y = 3x -------- eqn 1

If a group of children receive 5 oranges each, there will be no left over

So, "c" children receives 5 oranges each, there will be no left over

number of oranges = 5(number of children)

x = 5c ------- eqn 2

If the same group of children receive 8 oranges each, there will be 21 pears left over

number of pears = 8 oranges(number of children) + 21

y = 8c + 21

Substitute eqn 1

3x = 8c + 21 ---- eqn 3

Substitute eqn 2

3(5c) = 8c + 21

15c - 8c = 21

7c = 21

c = 3

Substitute c = 3 in eqn 2

x = 5(3)

x = 15

Thus there are 15 oranges

Pablo drove 23.1 miles to his aunt’s house, then drove 19.24 miles to his friend’s house. Which estimate can Pablo use to determine the distance he drove altogether?

Answers

Answer:

I think the answer is 42.

Step-by-step explanation:

I estimated 23.1 to 23 miles then I estimated 19.24 to 24 and added 23+19=42. But I don't know if that is correct because there was no specification if we round to the whole number.

Find the 168th term of arithmetic sequence {a_{n}, n = 1, 2, 3, . . .} with common ifference d = 1.5 and first term a_{1} = 2.

Answers

$a_1=2;\ d=1.5\n\na_n=a_1+(n-1)d\n\na_n=2+(n-1)\cdot1.5=2+1.5n-1.5=0.5+1.5n\n\na_(168)=0.5+1.5\cdot168=0.5+252=252.5$

To solve a problem, we often _________ the given information into algebraic expressions and equations.

Answers

Answer – Translate
To solve a problem, we often translate the given information into algebraic expressions and equations; in doing so, the variable (unknown value) is represented with a letter. For instance, the information, “6 less than twice a number" is translated to '2n – 6'.

In a bag of gum balls, 30% of the gum balls are blue. There are 12 blue gum balls in the bag. How many total gum balls are in the bag?4-
38
36
22

Answers

Answer:

Step-by-step explanation:

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