helppppppppp :)))

plss :))))

Answer:

need more info

Step-by-step explanation:

what are we sloving

The expression that represents the month of the year, in which months will the temperature be 17°C is x = 2π

The function is given as:

f(x) = 5sin(x/12) + 14.5

When the temperature is 17°C, the equation becomes

5sin(x/12) + 14.5 = 17

Subtract 14.5 from both sides

5sin(x/12) = 2.5

Divide both sides by 5

sin(x/12) = 0.5

Take the arc sin of both sides

x/12 = π/6

Multiply both sides by 12

x = 2π

Hence, the expression that represents the month of the year, in which months will the temperature be 17°C is x = 2π

Read more about sinusoidal functions at:

https://brainly.com/question/14168604

Answer:

See below.

Step-by-step explanation:

1) Piece lengths are:

=> 4 cm

=> 8 cm

=> 16 cm

2) Meters of curtain in bundles are :

=> 120 m

=> 300 m

=> 420 m

[tex]\bold{\huge{\underline{ Solution 1 }}}[/tex]

Let the given ratios be 1x, 2x and 4x

According to the question,

[tex]\sf{ x + 2x + 4x = 28}[/tex]

[tex]\sf{ 7x = 28}[/tex]

[tex]\sf{ x = }{\sf{\dfrac{28}{7}}}[/tex]

[tex]\sf{ x = }{\sf{\cancel{\dfrac{28}{7}}}}[/tex]

[tex]\bold{ x = 4}[/tex]

Thus, The value of x is 4

Length of first piece = 4 cm

Length of second piece

[tex]\sf{ = 2}{\sf{\times{4}}}[/tex]

[tex]\bold{ = 8\: cm }[/tex]

Length of third piece

[tex]\sf{ = 4}{\sf{\times{4}}}[/tex]

[tex]\bold{ = 16 \:cm }[/tex]

Hence, The length of each piece of board is 4 cm , 8cm and 16cm .

[tex]\bold{\huge{\underline{ Solution 2 }}}[/tex]

Let the given ratios be 2x, 5x and 7x

According to the question,

[tex]\sf{ 2x + 5x + 7x = 840}[/tex]

[tex]\sf{ 14x = 840}[/tex]

[tex]\sf{ x = }{\sf{\dfrac{840}{14}}}[/tex]

[tex]\sf{ x = }{\sf{\cancel{\dfrac{840}{14}}}}[/tex]

[tex]\bold{ x = 60}[/tex]

Thus, The value of x is 60

Length of the first bundle of curtains

[tex]\sf{ = 2}{\sf{\times{60}}}[/tex]

[tex]\bold{ = 120\: m }[/tex]

Length of the second bundle of curtains

[tex]\sf{ = 5}{\sf{\times{60}}}[/tex]

[tex]\bold{ = 300\ : m }[/tex]

Length of the third bundle of curtains

[tex]\sf{ = 7 }{\sf{\times{60}}}[/tex]

[tex]\bold{ = 420\: m }[/tex]

Hence, The length of each bundle of curtains is 120m, 300 m and 420 m

Answer:

$12.95

Step-by-step explanation:

25.9 divided by 2 = 12 .95

Answer:

$12.95

Step-by-step explanation:

since it is half price it will be divided by two

therefore the price you will pay will be

$25.90÷2=$12.95

Answer:

There are 4 possible ways to put the fruits into the basket.

Thanks!

Answer:

new price: $2.9295

Explanation:

original price: 100%

new price: 100% + 5% = 105%

solve:

$2.79 * 105%

$2.9295

Answer: 77/100

Step-by-step explanation:

Answer:

115.42 is the answers for the question

Step-by-step explanation:

please mark me as brainlest

Answer:

If I were to estimate it I would have to say at least 110 to 115

Step-by-step explanation:

Now that I calculated the answer it actual is 115.42 and rounded down 115.4

Hope this helps have a great day:)

Answer:

Multiply , add and then you get your solution.

Step-by-step explanation:

y=2(-3)+3

y= -6+3

y= -3

Answer:

it is a geometrical net

Answer:

the 1st

Step-by-step explanation:

no need to explain

Answer:

B) Positive liner association

Answer:

x = 64 weeks

Step-by-step explanation:

Based on the quantity of water in the tanks and the leakage rate, the two tanks will be equal after 64 weeks.

The first tank has 256 gallons and is leaking at 3 gallons per week. Assuming the number of weeks is x, the expression is:

= Water in tank - (Gallons leaking per week x No. of weeks)

= 256 - (3 × x)

= 256 - 3x

The second tank:

= 384 - 5x

To find the number of weeks they would be equal, equate both tanks:

384 - 5x = 256 - 3x

384 - 256 = -3x + 5x

128 = 2x

x = 128 / 2

Answer:

area= 78.5 cm²

circumference= 31.4 cm

Step-by-step explanation:

[tex]\boxed{Area \: of \: circle= πr²}[/tex]

Given that the radius is 5cm, r= 5. Substitute r= 5 and π as 3.14 into the equation:

Area of circle

= 3.14(5²)

= 78.5 cm²

[tex]\boxed{circumference \: of \: circle =2πr }[/tex]

Circumference of circle

= 2(3.14)(5)

= 31.4 cm

For another question on area of circle, you might want to check out this question here: https://brainly.com/question/14068861

Answer:

x = ± 6

Step-by-step explanation:

1: Subtract both sides by -54

[tex]-1.5x^2=-54[/tex]

2: Divide both sides by -1.5

[tex]x^2=36[/tex]

3: Take both sides to the 1/2 power

[tex]x= 6, -6[/tex]

Step-by-step explanation:

the usual line equation is

y = mx + b

I personally rather write it

y = ax + b

but really, all letters are possible as needed (particularly, if certain letters are already used for other parts of the problem definition).

what is important is to understand the messaging of the parts of such equations independently of what letter is used for what.

the factor of x (usually m in these equations) is the slope of the line, its incline. it is expressed as the ratio "y coordinate change / x coordinate change" when going from one point on the line to another.

the constant term (often called b in these equations) is the y-intercept (the y value when x = 0, indicating where the line is intercepting the y-axis).

I guess the equation in your problem actually looks like

2 + 3x + 5 - 2x = y

so, let's combine similar terms

3x - 2x + 2 + 5 = y

x + 7 = y

and now compare this to the general line equation, and we find

m = 1

b = 7

Step-by-step explanation:

100% = X

50% = 100%/2 = X/2

X decreased by 50 means X - 50% = X - X/2 = X/2

now,

100% = X/2

50% = 100%/2 = X/2 / 2 = X/(2×2) = X/4

increasing the previous result by 50% means

X/2 + 50% = X/2 + X/4 = 2X/4 + X/4 = 3X/4

so, comparing this to the original X (= 4X/4), we are X/4 short.

The reading of the books are illustrations of linear equations

The term that describes the scenario is linear equations

From the question, we have:

Logan

Books = 14

Rate = 1 per week

Mariko

Books = 12

Rate = 1 per week

So, the equations that represent the number of books read in x weeks are:

Logan: y =14 + x

Mariko = 12 + x

The above equations are linear equations

Hence, the term that describes the scenario is linear equations

Read more about linear equations at:

https://brainly.com/question/4074386

Answer:

A, B, E

Step-by-step explanation:

Using a geometric sequence, it is found that the rule for the number of matches played in the nth round is given by:

[tex]a_n = 64\left(\frac{1}{2}\right)^n[/tex]

The rule makes sense for values of n of at most 6, as in the last round, which is the 6th and final round, 1 game is played.

A geometric sequence is a sequence in which the result of the division of consecutive terms is always the same, called common ratio q.

The nth term of a geometric sequence is given by:

[tex]a_n = a_1q^{n-1}[/tex]

In which [tex]a_1[/tex] is the first term.

In this problem, we have that:

Thus, the rule is:

[tex]a_n = 64\left(\frac{1}{2}\right)^n[/tex]

The last round is the final, in which 1 game is played, hence:

[tex]1 = 64\left(\frac{1}{2}\right)^n[/tex]

[tex]\left(\frac{1}{2}\right)^n = \frac{1}{64}[/tex]

[tex]\left(\frac{1}{2}\right)^n = \left(\frac{1}{2}\right)^6[/tex]

[tex]n = 6[/tex]

Hence, the rule makes sense for values of n of at most 6, as in the last round, which is the 6th and final round, 1 game is played.

More can be learned about geometric sequences at https://brainly.com/question/11847927

Answer:

c or 4 3/8

Step-by-step explanation:

Just multiplied

Please mark brainlest

Answer:

decrease of 80%

Step-by-step explanation:

See image.

Use variables for the fraction.

Numerator means the top number.

Denominator means the bottom number.

Change percents to decimals to calculate.

.8 is 80%.

80% will make the whole fraction smaller.

see image

Answer:

The fraction will decrease by 20%.

You can suppose other fractions too you will get the same answer though.

Step-by-step explanation:

Let the fraction be 1/2

Now,

1/2

=> 1 + 20% of 1 => 1 + 20/100 => 6/5

=> 2 + 50% of 2 => 2 + 1/2 * 2 => 2 + 1 => 3

so,

6/5/3 => 2/5

Now,

1/2 - 2/5 => 1/10

Now,

1/10/1/2 * 100%

= 1/5 * 100%

= 20%

it is 10 first subtract 40 from 25 percent and then subtract 15 from 5

Answer:The y intercept would be 55.

Step-by-step explanation:Wherever the y-axis is touched at with the x-value at 0 (in this case, its 55) that would be the y-intercept.

Answer:

[tex]\huge\boxed{\sf{55}}[/tex]

Step-by-step explanation:

Hello.

In order to determine the y-intercept, just look at the y-coordinate (If we have a point like (0, b)

b --> y-intercept

Therefore, b (the y-intercept) is equal to 55.

I hope it helps.

Have a great day.

[tex]\boxed{imperturbability}[/tex]

Answer:

8

Step-by-step explanation:

1÷one eighth=1÷[tex]\frac{1}{8}=1\times{8}=8[/tex]

Answer:

-6 5/7

Multiply the denominator by the number that doesn't exceed -47. Here, it would be -6.

7 x (-6) = -42

Then, subtract the difference to get the mixed number.

-42-5 = -47

The numbers used are found in the improper fraction: -6 5/7

Answer:

[tex]-6\frac{5}{7}[/tex]

Step-by-step explanation:

Given the following question:

[tex]-\frac{47}{7}[/tex]

To convert an improper fraction into a mixed number we simply have to divide the numerator by the denominator.

[tex]-\frac{47}{7}[/tex]
[tex]-\frac{47}{7}=47\div7=-6\frac{5}{7}[/tex]
[tex]=-6\frac{5}{7}[/tex]

Let 6 represent how many times 7 does into 47
Let 5 represent the remainder
Let 7 represent the denominator which remains the same.

Hope this helps.

Answer: D

Step-by-step explanation:

21/17.5 = 18/15

So the triangles are similar by SAS.

the surface area of a cone: πr²+πLr

L = the slant height

r = radius of the base

r = 40 in : 2 = 20 in

L = 50 in

The surface area:

=π.20² + π.50.20

=1256+3140

=4396 in²