would some one please solve part A for me I have been try to solve it for a while thank you very much .​

Answer:

t=2.08 seconds.

Step-by-step explanation:

Well, in this example, H(t)=-0.6cos(2pi/2.5)t+1.5 should be equal to 1.2. If calculated, -0.6cos(0.8pi)t=1.2-1.5 which is equal to -0.6cos(0.8pi)t=-0.3, then cos(0.8pi)t=0.5. The value of cosine in terms of radians when it is equal to 0.5 is pi/3. So, cos(0.8pi)t=cos(pi/3). If simplified, (0.8pi)*t=5pi/3. pi's are cancelled out and t is calculated as 2.08333... If rounded to the nearest hundredth it is 2.08.

Answer:

x = - 9, x = 0, x = 7

Step-by-step explanation:

Given

[tex]\frac{1}{2}[/tex] x(x - 7)(x + 9) = 0 ← in standard form

Equate each factor to zero and solve for x

[tex]\frac{1}{2}[/tex] x = 0 ⇒ x = 0

x - 7 = 0 ⇒ x = 7

x + 9 = 0 ⇒ x = - 9

Answer:

-9, 0, 7

Step-by-step explanation:

Finding the roots of a polynomial equation is the same as solving the equation. So, simply figure out which values make the equation equal 0.

If multiplication is involved, then 0 is always an answer (or root). Because anything multiplied by 0 is always 0.

7 is also a root:

7 - 7 = 0

Same with -9:

-9 + 9 = 0

Answer:

B)12

Step-by-step explanation:

6/x = 4/8

6/x = 1/2

6 * 2 = 1 * x

12 = x

x = 12

Answer:

The co-ordinates of Q' is (5,2).

Step-by-step explanation:

Given:

Pre-image point

Q(-7,-6)

To find Image point Q' after following translation.

[tex](x,y)\rightarrow (x+12,y+8)[/tex]

Solution:

Translation rules:

Horizontal shift:

[tex](x,y)\rightarrow (x+k,y)[/tex]

when [tex]K>0[/tex] the point is translated [tex]k[/tex] units to the right.

when [tex]K<0[/tex] the point is translated [tex]k[/tex] units to the left.

Vertical shift:

[tex](x,y)\rightarrow (x,y+k)[/tex]

when [tex]K>0[/tex] the point is translated [tex]k[/tex] units up.

when [tex]K<0[/tex] the point is translated [tex]k[/tex] units down.

Given translation [tex](x,y)\rightarrow (x+12,y+8)[/tex] shows the point is shifted 12 units to the right and 8 units up.

The point Q' can be given as:

Q'=[tex](-7+12,-6+8)=(5,2)[/tex]

So, the co-ordinates of Q' is (5,2). (Answer)

Answer: 23.548

Step-by-step explanation: The thousandths place is 3 places to the right of the decimal point so in this problem, the digit in the rounding place is 8.

The rules of rounding says that if the digit to the right of the rounding place is greater than or equal to 5, we round down but if the digit to the right of the rounding place is less than 5, we round down.

Since the digit to the right of the rounding place, 1, is less than 5, we round down. This means that the digit in the rounding place which is 8 stays the same and we change all digits to the right of 8 to zero.

So we have 23.5480.

Finally, it's important to understand that when rounding decimals, we can drop any zeroes to the right of the decimal point as long as they're also to the right of the rounding place.

This means that 23.5481 rounded to the nearest thousandth is 23.548.

Answer:

infinately many solutions

Step-by-step explanation:

Answer:

92.056543

Step-by-step explanation:

Let's note the information.

This is what we know:

Every buttons came in packages of 30 per student.

Every bookmark came in packages of 50 per person.

Know, we need to do some multiplying.

30 x 400 & 50 x 400

Now solve.

30 X 400 = 12000.

So we now know that they have an estimated 12000 buttons total.

Now, we find x for bookmarks.

50 x 400 = 20000

That means total that estimated that 20000 bookmarks will be given.

Answer:

15 packages of buttons

9 packages of bookmarks

Step-by-step explanation:

We need to find the least common multiple (LCM) of 30 and 50.

30 = 2×3×5

50 = 2×5²

LCM = 2×3×5²

LCM = 150

Now we need to find a multiple of LCM that is greater than 400.

3LCM = 450

The committee needs at least 450 of each, which means they need at least 15 packages of buttons and 9 packages of bookmarks.

Answer:

Step-by-step explanation:

 This is a simple proportion problems.

7 kilogram weight attache to a spring stretches  = 6 meters

 1 kilogram would stretch                                       =  6/7 m

Therefore 42 kilograms would  stretch                  = (6/7 x 42)meters

                                                                                 =  36 meters.

Answer:

D

Step-by-step explanation:

You can see, MN consists of the three lines in the picture. So you just need to sum them tougher in an equation with it's original value 81.

5 + 3x - 8 + 4x = 81

7x = 81 + 3

7x = 84 / : 7

x = 12

The value x from the given line segment is 12 units. Therefore, option D is the correct answer.

A line segment is a path between two points that can be measured. Since line segments have a defined length, they can form the sides of any polygon.

Given that, MN=81.

Here, MN=5+3x-8+4x

MN=7x-3

7x-3=81

7x=81+3

7x=84

x=84/7

x=12

Therefore, option D is the correct answer.

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Answer:

y=-1/3x+2/7

Step-by-step explanation:

y=-3x+6/7

x=-3y+6/7

-3y=x-6/7

y=-1/3x+(6/7)/3

y=-1/3x+(6/7)(1/3)

y=-1/3x+6/21

y=-1/3x+2/7

Answer:

[tex]\large \boxed{\text{A. }\dfrac{13}{7}\text{; B. }\dfrac{17}{14} \text{; C. 507 in}^{2}}[/tex]

Step-by-step explanation:

A. Scale factor

When you dilate an object by a scale factor, you multiply its line lengths by the same number.

If EF/AB = 13/7, the scale factor is 13/7.

B. Length of EF

[tex]\begin{array}{rcl}\dfrac{EF}{AB} & = & \dfrac{13}{7}\\\\\dfrac{EF}{\frac{17}{26}} & = & \dfrac{13}{7}\\\\EF & = & \dfrac{13}{7}\times\dfrac{17}{26}\\\\ & = &\dfrac{1}{7}\times\dfrac{17}{2}\\\\ & = & \mathbf{\dfrac{17}{14}}\\\end{array}\\\text{The length of EF is $\large \boxed{\mathbf{ \dfrac{17}{14}}}$}[/tex]

C. Area of EFGH

If the lengths in a shape are all multiplied by a scale factor, then the areas will be multiplied by the scale factor squared.

ABCD is dilated by a scale factor of 13/7, so its area is dilated by a scale factor of

[tex]\left(\dfrac{13}{7} \right)^{2} = \dfrac{169}{49}[/tex]

The area of its dilated image EFGH is

[tex]\text{Area of EFGH} = \text{147 in}^{2} \times \dfrac{\text{169}}{\text{49}} = 3 \times 169\text{ in}^{2} = 507 \text{ in}^{2}\\\\\text{The area of EFGH is $\large \boxed{\textbf{507 in}^{\mathbf{2}}}$}[/tex]

Step-by-step explanation: To compare decimals such as 18.4 and 18.04, first line up the decimal points of the numbers.

Next, we compare the digits place by place starting on the left.

1 and 1 are the same, 8 and 8 are the same, but notice that 4 is greater than 0.

This means that 18.4 is greater than 18.04.

So to answer your question, 18.04 is less than 18.4

Answer:

the answer is 3

Step-by-step explanation:

Final answer:

The multiplication property of equality states that multiplying or dividing both sides of an equation by the same number does not change the equality. The reciprocal of 1/3 is 3/1 or 3. So, if you multiply or divide both sides of an equation by 3/1 (the reciprocal of 1/3), you will maintain the equality.

Explanation:

The multiplication property of equality states that multiplying or dividing both sides of an equation by the same number does not change the equality. In this case, we have the fraction 1/3. The reciprocal of 1/3 is 3/1 or 3. Multiplying both sides of an equation by 3 is equivalent to dividing both sides by 1/3. So, if you multiply or divide both sides by 3/1 (the reciprocal of 1/3), you will maintain the equality.

Answer:

y=2x-13

Step-by-step explanation:

m=(y2-y1)/(x2-x1)

m=(-7-(-1))/(3-6)

m=(-7+1)/-3

m=-6/-3

m=2

y-y1=m(x-x1)

y-(-1)=2(x-6)

y+1=2x-12

y=2x-12-1

y=2x-13

Answer:

The solution is y> -1

Step-by-step explanation:

y- 6 > -7

y> -7+6 (add 6 on both sides)

y> -1

The graph should the the first option from the right, with the dot above -1.

Since y is greater than -1, the dot should be on -1 and the arrow should be pointing towards the right. It shouldn't be a coloured dot because the sign is 'greater than' (>) not 'greater or equal to' (≥)

Answer:

You forgot to attach the image

Answer:

[tex]\displaystyle 36\:units[/tex]

Step-by-step explanation:

Split up this Isosceles, Right Triangle into two congruent smaller right triangles. The reflexive side [the line that splits them apart] is 6 units, and both legs are 8 units, leaving the hypotenuses to AUTOMATICALLY be 10 units, according to the Pythagorean Theorem:

[tex]\displaystyle a^2 + b^2 = c^2 \\ \\ 6^2 + 8^2 = 10^2 \\ \\ 36 + 64 = 100 \\ \\ 100 = 100[/tex]

With this Pythagorean Triple, we know that our dimensions are correct. Now, to find the perimeter, just add up all the sides EXCEPT for the divider:

[tex]\displaystyle 2[10] + 2[8] = 20 + 16 = 36[/tex]

I am joyous to assist you anytime.

Answer:All the answers were correct but her calculating was wrong.

Step-by-step explanation: Jordana could not find the scale factor she was looking in the wrong place but the answer was correct and when she calculated she it wrong but the answer was correct.

Answer:

C

Step-by-step explanation:

The perimeter of the triangle is: 13x+6

Step-by-step explanation:

The perimeter is the length of the outer boundary of any closed geometrical shape.

So,

Given

[tex]Side\ 1 = s_1 = 5x+3\\Side\ 2 = s_2 = 5x+5\\Side\ 3 = s_3 = 3x-2[/tex]

The perimeter will be:

[tex]P = s_1+s_2+s_3\\= (5x+3)+(5x+5)+(3x-2)\\=5x+5x+3x+3+5-2\\=13x+6[/tex]

The perimeter of the triangle is: 13x+6

Keywords: Perimeter, geometry

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Answer:

Step-by-step explanation:

y=mx+b

Answer:

Step-by-step explanation:

A) 1/3 of 5

1/3 of 5 = (1/3)*5 = 1*5/3 = 5/3

Answer:

The total payment Janie have to make is $5466 .

Step-by-step explanation:

Given as :

The loan principal = $4850

The rate of interest applied = 13.8% compounded monthly

Let The time period of loan = t years

The monthly payment she make = $455.50 each month

I.e She make payment for t years = $455.50 × n

where n is the number of terms

From Compound Interest

Amount = Principal × [tex](1+\dfrac{\textrm rate}{12\times 100})^{12\times time}[/tex]

Or,  $455.50 × n  = $4850 × [tex](1+\dfrac{\textrm 13.8}{12\times 100})^{12\times time}[/tex]

Or, [tex]\dfrac{455.50}{4850}[/tex] × n  = [tex](1.0115)^{12\times 1}[/tex]

Or, 0.0939 × n  = [tex](1.0115)^{12}[/tex]

Or, 0.0939 × n = 1.14707

∴ n = [tex]\dfrac{1.14707}{0.0939}[/tex]

I.e n = 12.21 ≈ 12

So, The number of terms Janie she will pay = 12

So, The total payment she have to make = $455.50 × 12 = $5466

Hence The total payment Janie have to make is $5466 . Answer

Answer:

She will have to make 12 payments

Step-by-step explanation:

64 is 8 times as many as w

There are 7 times as many balls V as bats

The phrase "times as many" signals multiplication.

Final answer:

The answer provides examples of sentences that describe a comparison using multiplication from the options given.

Explanation:

Select the sentence that describes a comparison using multiplication:

64 is 8 times as many as w.

There are 7 times as many balls V as bats.

An ant can carry 50 times its own weight.

Answer:

$5.75

Step-by-step explanation:

3.45 divided by 3 is 1.15. 1.15 times 5 is 5.75.

The cost of 5 pounds of oranges at a unit rate of 1.15 dollars is 5.75 dollars.

A unitary method is a mathematical way of obtaining the value of a single unit and then deriving any no. of given units by multiplying it with the single unit.

Given, Mrs. Alveres purchased 3 pounds of oranges for $3.45.

∴ The cost of 1 pound of orange is (3.45/3) dollars.

= 1.15 dollars.

If the cost of 1 pound of orange is 1.15 dollars,

∴ The cost of 5 pounds of oranges is,

= (5×1.15) dollars.

= 5.75 dollars.

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Answer:

[tex]V=\frac{49}{2}\ cm^3[/tex]

or

[tex]V=24.5\ cm^3[/tex]

Step-by-step explanation:

we know that

The volume of the rectangular prism is

[tex]V=LWH[/tex]

where

L is the length

W is the width

H is the height

substitute the given values in the formula

[tex]V=(\frac{7}{5})(5)(\frac{7}{2})[/tex]

[tex]V=\frac{245}{10}\ cm^3[/tex]

Simplify

[tex]V=\frac{49}{2}\ cm^3[/tex] ---> fraction form

or

[tex]V=24.5\ cm^3[/tex] ----> decimal form

The volume of the rectangular prism is 24.5 cm³.

To find the volume of a rectangular prism, you use the formula Volume = length × width × height. Given the dimensions of the prism are 7/5 cm by 5 cm and 7/2 cm, we calculate the volume by multiplying these three dimensions together.

Volume = (7/5) cm × 5 cm × (7/2) cm

First, simplify the calculation by multiplying the whole numbers: Volume = (7 × 5 × 7) / (5 × 2) cm³, which simplifies to Volume = 49/2 cm³. Then, divide 49 by 2 to get Volume = 24.5 cm³.

Answer:

(8m^7n^6)/3.

Step-by-step explanation:

(2mn)^4/6m^-3n^-2

= 16m^4n^4 / 6m^-3n^-2

= (8m^7n^6)/3

Answer:

Ans is 30.................

College can be expensive, but it is worth the expense. Students should consider financial aid when applying for colleges. Here are common ways to fund a college education: earn scholarships, obtain loans, and find a job. Therefore, the correct answer choice is: C. are.

In English language, a sentence is a group of words or phrases that comprises a subject and predicate, which are typically used by an author or speaker in order to convey a logical information about a subject matter to an audience (readers or listeners).

A verb is one of the parts of speech in English language and it refers to any word that describes an action, occurrence, or a state of existence.

In this context, we can reasonably infer and logically deduce that the most appropriate word to complete the sentence is "are" because it is a linking verb and it connects the subject with objects in plural form.

Answer:

2!

Step-by-step explanation:

To find out what fraction of 2 1/2 is 4/5, convert 2 1/2 to a fraction (5/2), then multiply 4/5 by the reciprocal of 5/2 which gives 8/25. So, 4/5 is 8/25 of 2 1/2.

The question is asking about what fraction of 2 1/2 is 4/5. In order to solve this, we should firstly convert the mixed number 2 1/2 to a fraction, which is 5/2. Then we have to divide 4/5 by 5/2 to find out the fraction. To divide fractions, we multiply the first fraction (the dividend) by the reciprocal of the second fraction (the divisor).

So, the problem becomes 4/5 * 2/5, and the solution is 8/25. Therefore, 4/5 is 8/25 of 2 1/2.

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