please!!! help, urgent math problem!

Answer:

[tex]y=-2cos (2(x+\pi ))-1[/tex]

Step-by-step explanation:

From the graph, we can see that y = -3 when x  = 0.

So to check whether which of the given options is the equation of the given graph, we will set our calculator to the radian mode and then plug the value of x as 0.

1. y = -2 cos (4(x + pi)) - 1 = -2 cos (4(0 + pi)) - 1  = 3

2. y = 2 cos(x + pi) = 2 cos(0 + pi) = -1

3. y = -2 cos (2(x + pi)) - 1 = -2 cos (2(x + pi)) - 1 = -3

Therefore, the equation of this graph is  y = -2 cos (2(x + pi)) - 1.

Answer:

19 cents per ounce

Step-by-step explanation:

$1 = 100 cent

Amount of corn flakes = 24 oz

Cost of corn flakes = $4.59 = 459 cents

Cost per ounce = 459/24 =19.125 = 19 cents/ ounce

∴ The cost of corn flakes is 19 cents per ounce.

Answer:

Step-by-step explanation:

Given equation [(x-1)/3]=(x+3)/4

Let us first get rid denominators from both sides.

On cross multiplying both sides, we get

4(x-1) = 3(x+3)

4x-4 = 3x+9

Adding 4 on both sides, we get

4x-4+4 = 3x+9+4

4x = 3x +13

Subtracting 3x on both sides, we get

4x-3x = 3x-3x +13

x = 13.

Now, we need to find the value of [ ] fraction We have [(x-1)/3] in given equation.

Plugging x= 13 in (x-1)/3, we get

13-1/3 = 12/3 = 4.

The best first step to solve the given equation is to add the first equation to the second equation.

In the elimination method you either add or subtract the equations to get an equation in one variable. When the coefficients of one variable are opposites you add the equations to eliminate a variable and when the coefficients of one variable are equal you subtract the equations to eliminate a variable.

Given that are two equations, x+y=3 and 4x-y=7

To solve them we will use elimination method, because, in both equations coefficients of y are -1 and +1, if we will add them they will get cancelled, leaving x alone, that will help us find the value of x easily.

Hence, the best first step to solve the given equation is to add the first equation to the second equation.

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Answer:

Mrs. Wong spend $545.76 on tiles.

Step-by-step explanation:

Mrs. Wong has 144 tiles that she is going to place on her square kitchen floor. If the tiles are $3.79 each, how much did Mrs. Wong spend on tile?

we are given

number of ties=144

cost of one tie=3.79 dollar

we have to find

total cost of 144 ties

for this we will multiply 144 by 3.79

multiplying 144 by 3.79 gives=144*3.79

it other words

one tile cost=$3.79

and for 144 ties cost

multiplying 144 on both sides

144 tiles cost=3.79*144=$545.76

Answer:

She will spend $545.76!

Step-by-step explanation:

To get the answer you must multiply 144 by 3.79. You will end up with $545.76

Good Luck

Please mark me BRAINLIEST

Answer:

- 4x² + 10x

Step-by-step explanation:

(f - g)(x) = f(x) - g(x)

= - x² + 6x - 1 - (3x² - 4x - 1) ← distribute

= - x² + 6x - 1 - 3x² + 4x + 1 ( collect like terms )

= - 4x² + 10x

Final answer:

To find f-g (x), subtract g(x) from f(x) and combine like terms. The resulting function is f-g (x) = -4x² + 10x.

Explanation:

To find the difference of the functions f(x) and g(x), denoted as f-g (x), we simply subtract the function g(x) from f(x). In the given problem:

f(x) = -x² + 6x - 1

g(x) = 3x² - 4x - 1

We subtract the expressions:

f-g (x) = (-x² + 6x - 1) - (3x² - 4x - 1)

Removing the parentheses and simplifying, we get:

f-g (x) = -x² + 6x - 1 - 3x² + 4x + 1

Combine like terms:

f-g (x) = -4x² + 10x

Thus, the function f-g (x) is -4x² + 10x.

Answer:

This is an obtuse scalene triangle.

Step-by-step explanation:

This is an obtuse triangle.  An obtuse triangle has an angle greater than 90 degrees.  It is also a scalene triangle because none of the sides are equal.

Answer:

216/9 or simplified 24

Step-by-step explanation:

4

9

×

54

1

=

4 × 54

9 × 1

=

216

9

=

216 ÷ 9

9 ÷ 9

= 24

The value of the expression is 36

Fractions are simply defined as expressions that are made up of part of a whole number, element, or variable

The different types of fractions in mathematics are;

From the information given, we have that the expression is;

4/9 times 54

Express mathematically, we have;

4/9 ×54

Divide by the common factor

4 × 6

Multiply the values

36

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Answer:

(x ÷ 8) + 3/4 ≥ -1/4

Step-by-step explanation:

Let "x" be a number.

The quotient of "x" and eight means   x÷8

It is increased by 3/4

(x ÷ 8) + 3/4

The expression is at least -1/4

Here "at least" represents ≥

Therefore, (x ÷ 8) + 3/4 ≥ -1/4

Thank you.

Answer:

The easiest way to get this is through divide and conquer.

Therefore take 1, 2, 3, 5, 7, 9, and 11.

1 is a factor obviously.

2 is a factor since 80 is divisible by 80. We found a factor so divide the value 80 by 2 and we get 40. Is 2 a factor of 40? Yep, so divide again and we have 20. Is 2 a factor of 20. Yep. So is 10. So now we are at 5. But 5 is not a factor of 2. 5 is a factor of 5.

So we have the following 1, 2, 2, 2, 2, and 5. Thus 2 and 5 are your prime factors of 80. Note this is NOT the prime factorization of the number 80. That value is 2^4 * 5. You asked the prime factors of 80. Those are 2 and 5.

Hope this helped good luck

-Emily

We must find the common denominator.

The list of multiples of 4: 0, 4, 8, 12, 16, 20, ...

The list of multiples of 3: 0, 3, 6, 9, 12, 15, 18, ...

The common denominator is 12.

[tex]\dfrac{3}{4}=\dfrac{3\cdot3}{4\cdot3}=\dfrac{9}{12}\\\\\dfrac{2}{3}=\dfrac{2\cdot4}{3\cdot4}=\dfrac{8}{12}[/tex]

Therefore:

[tex]\dfrac{3}{4}+\dfrac{2}{3}=\dfrac{9}{12}+\dfrac{8}{12}=\dfrac{9+8}{12}=\dfrac{17}{12}=\dfrac{12+5}{12}=1\dfrac{5}{12}[/tex]

Answer:

38ft

Step-by-step explanation:

wellcut it in two a rectangle 8 by 3

triangle with the base of 7 and the hight of 4

area for a rectangle bxh so 8 times 3 = 24ft

area for a triangle is bxhx1/2 so 7x4= 28 divided by 2= 14

now add 14+24= 38ft

Final answer:

To find out how much dressing remains in the jar, subtract the amount of dressing poured onto the salad from the total amount of dressing made.

Explanation:

To find out how much dressing remains in the jar, we need to subtract the amount of dressing poured onto the salad from the total amount of dressing made.

Dakota combines 6 1/3 fluid ounces of oil and 2 3/8 fluid ounces of vinegar, which gives us a total of 8 17/24 fluid ounces of dressing.

She pours 2 1/4 fluid ounces of the dressing onto her salad. To find out how much dressing remains, we need to subtract 2 1/4 from 8 17/24. Converting the fractions to a common denominator, we have (55/24) - (9/4) = 46/24 - 9/4 = 37/24. This means that 37/24 fluid ounces of dressing remain in the jar.

Answer:

The relationship between the volume of a cylinder and its radius. To see that as the radius changes, the volume changes in proportion. Be able to comfortably use the volume of a cylinder formula. π is a constant and height, h, is a constant in this task.

Answer:

9.106

Step-by-step explanation:

The circumference of a circle with a given diameter is: [tex]C=\pi d[/tex]

We are given the diameter of 2.9 units.

Using 3.14 for pi:

[tex]C=3.14 * 2.9\\\\\boxed{C=9.106}[/tex]

The circumference is about 9.106 units.

Answer:

A

Step-by-step explanation:

Monday he ran the highest because 4.5 is greater than the other numbers given.

Answer:

Monday.

Step-by-step explanation:

We want to know on which day he ran the greatest number of miles.  The largest number is the greatest number of miles.  4.5 is the largest number and that is on Monday

Answer: 17.6x +30.9

Step-by-step explanation:

the constant is 30.9

1) you distribute the 2 to 8.8. and 17.6

2) then you combine like terms

Answer:

brainliest plsssss

Step-by-step explanation:

Let's simplify step-by-step.

2(8.8x+17.6)−4.3

Distribute:

=(2)(8.8x)+(2)(17.6)+−4.3

=17.6x+35.2+−4.3

Combine Like Terms:

=17.6x+35.2+−4.3

=(17.6x)+(35.2+−4.3)

=17.6x+30.9

Answer:

$1,325

Step-by-step explanation:

All we have to do is to identify which amount is the goal, and which amount(s) are taken steps toward that goal. Once you identify those, deduct whatever amount(s) that have got you closer to the goal and you will get what is still left to achieve. Or as stated in this example, the open-to-buy amount.

Goal:

$3,500 (as planned)

Steps made toward reaching planned goal:

Orders Received: $975

Merchandise ordered: $1,200

Compute the goal minus the steps achieved so far and Voila! You will get your open-to-buy amount.

$3,500-$975-$1,200=$1,325

Answer: A is the answer

Step-by-step explanation: 6(10 + 4). 6(10 + 4) = 6 × 10 + 6 × 4 =60 + 24

To solve this problem, we first need to figure out how much tax will be applied to Neil's purchase.  To do this, we need to multiply the tax rate (5%) by the cost of the washing machine ($445).  But, we can't multiply percentages unless we change them to decimal form first.  To do this, we need to divide the percentage by 100 (because 5 percent is a fraction out of a  total 100 percent) or move the decimal point two spots to the left.  This gives us the following:

0.05 * 445

If we compute this expression, we get:

$22.25

This means that Neil will be charged $22.25 in tax.  However, the question asks for the total cost including tax, so we must add the original cost of the washing machine to the tax.  

$445 + $22.25 = $467.25

Therefore, your answer is $467.25.

Hope this helps!

Answer:

A. 23 cm3

Step-by-step explanation:

V= mass ÷ density

12 g/cm3 is the density

276g is the mass.

So, 276 ÷ 12

= 23 cm3

Answer: 14 cm3

Step-by-step explanation:

Answer:

Correct choice is A

Step-by-step explanation:

Two vertices of the rectangle have coordinates A(-1, 5) and B(2, 1). If rectangle sides are parallel to the axes, then two remaining vertices have coordinates C(-1,1) and D(2,5) (see attached diagram for details).

Find the length and the width:

[tex]AC=\sqrt{(-1-(-1))^2+(5-1)^2}=4\ units,\\ \\AD=\sqrt{(2-(-1))^2+(5-5)^2}=3\ units.[/tex]

Then the length is 1 unit longer than the width.

Answer:

x=9

Step-by-step explanation:

-9x + 1 = -80

-9x = -81           substract 1 from both sides

x= 9                  divide both sides by -9

The solution to the equation -9x + 1 = -80 is x = 9

To solve the equation -9x + 1 = -80, we aim to isolate the variable x on one side of the equation.

First, we can subtract 1 from both sides to get rid of the constant term:

-9x + 1 - 1 = -80 - 1

This simplifies to:

-9x = -81

Next, we divide both sides by -9 to solve for x:

(-9x) / -9 = (-81) / -9

This gives us:

x = 9

Therefore, the solution to the equation -9x + 1 = -80 is x = 9. When we substitute x with 9 in the original equation, we get -9(9) + 1 = -80, which is true, confirming the solution.

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The correct measure of angle 2 is [tex]\( m\angle2 = 130\°\)[/tex].

To find the measure of angle 2, we need to use the properties of parallel lines and the angles formed when a transversal intersects them. When a transversal intersects two parallel lines, corresponding angles are equal, and alternate interior angles are also equal.

In the given scenario, lines b and c are parallel, and we assume that the transversal intersects these parallel lines at points not shown in the conversation. Let's denote the angles formed by the intersection of the transversal with line b as angles 1, 2, 3, and 4, and with line c as angles 5, 6, 7, and 8, respectively.

Since lines b and c are parallel, we have the following relationships:

1. [tex]\( m\angle1 = m\angle5 \)[/tex] (corresponding angles)

2. [tex]\( m\angle2 = m\angle6 \)[/tex] (corresponding angles)

3. [tex]\( m\angle3 = m\angle7 \)[/tex] (corresponding angles)

4. [tex]\( m\angle4 = m\angle8 \)[/tex] (corresponding angles)

5. [tex]\( m\angle1 = m\angle8 \)[/tex] (alternate interior angles)

6. [tex]\( m\angle2 = m\angle7 \)[/tex] (alternate interior angles)

7. [tex]\( m\angle3 = m\angle6 \)[/tex] (alternate interior angles)

8. [tex]\( m\angle4 = m\angle5 \)[/tex] (alternate interior angles)

From the given options, we can eliminate [tex]\( m\angle2 = 31\° \)[/tex] and [tex]\( m\angle2 = 50\° \)[/tex] because these options would imply that [tex]\( m\angle6 \) and \( m\angle7 \)[/tex] are also [tex]\( 31\° \) and \( 50\° \)[/tex], respectively. This would mean that the sum of the angles in the triangle formed by the transversal and line c would be less than [tex]\( 180\° \)[/tex], which is impossible.

Next, we consider [tex]\( m\angle2 = 120\° \)[/tex]. If this were true, then [tex]\( m\angle7 \)[/tex] would also be [tex]\( 120\° \)[/tex]. However, this would imply that the sum of the angles in the triangle formed by the transversal and line c would be [tex]\( 120\° + 60\° \)[/tex] (since [tex]\( m\angle6 \) and \( m\angle8 \)[/tex] would be supplementary, adding up to [tex]\( 180\° \)[/tex]), which again is impossible because the sum of angles in any triangle is [tex]\( 180\° \).[/tex]

Finally, we consider [tex]\( m\angle2 = 130\° \)[/tex]. This option is possible because if [tex]\( m\angle2 = 130\° \)[/tex], then [tex]\( m\angle7 \)[/tex] would also be [tex]\( 130\° \)[/tex]. The remaining angle in the triangle formed by the transversal and line c (which is [tex]\( m\angle6 \) or \( m\angle8 \)[/tex]) would be [tex]\( 180\° - 130\° = 50\° \)[/tex]. This satisfies the triangle angle sum property, as [tex]\( 130\° + 50\° = 180\° \)[/tex].

Therefore, the correct measure of angle 2 is [tex]\( m\angle2 = 130\° \)[/tex].

The complete question is:

Lines b and c are parallel. What is the measure of 2?

m2 = 31°

m2 = 50°

m2 = 120°

m2 = 130°

Answer: 5/4

Step-by-step explanation:

I reciprocal of a number can be found if you flip the upper and bottom numbers. Example: the reciprocal of 8 is 1/8

The reciprocal of 4/5 is 5/4.

The reciprocal of a number is when the fraction is turned upside down. This means that the denominator becomes the numerator and the numerator becomes the denominator.

The numerator is 3 and the denominator is 5. IN order to determine the reciprocal 4 becomes the denominator and 5 becomes the numerator. The reciprocal is 5/4.

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Answer:

15 hours

Step-by-step explanation:

Because you have to divide 72 by 5 to find out much money she makes per hour. You then find out that he makes $14.40 an hour and then you mutliply it bu different numbers until you get 216 and 14.40 times 15 is 216

Answer: 9

Step-by-step explanation:

The factors of 18: 1, 2, 3, 6, 9, 18

The factors of 27: 1, 3, 9, 27

The GCF of 18 and 27 is 9. This means that 9 is the largest number that can evenly divide both 18 and 27 without leaving any remainder.

Step 1: Find the Factors of Each Number

To find the factors of a number, you identify all the whole numbers that divide that number without leaving a remainder. Here are the factors of 18 and 27:

Factors of 18: 1, 2, 3, 6, 9, 18

Factors of 27: 1, 3, 9, 27

Step 2: Identify the Common Factors

Next, we look for the common factors between the two sets of factors. These are the numbers that appear in both lists:

Common factors of 18 and 27: 1, 3, 9

Step 3: Determine the Greatest Common Factor (GCF)

The GCF is the greatest or largest number among the common factors. In this case, the greatest common factor among 1, 3, and 9 is 9.

Therefore, the GCF of 18 and 27 is 9. This means that 9 is the largest number that can evenly divide both 18 and 27 without leaving any remainder.

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Answer:

$2.29

Step-by-step explanation:

She spent the $50.00 gift certificate plus $0.33.

$50.00 + $0.33 = $50.33.

She spent a total of $50.33.

The pajamas cost $17.97.

The necklace cost $25.49.

The total cost of the pajamas and necklace is:

$17.97 + $25.49 = $43.46.

Since she spent a total of $50.33, we now subtract the amount she spent on the pajamas and necklace to find out the cost of the three pairs of socks.

$50.33 - $43.46 = $6.87

The three pairs of socks cost a total of $6.87.

Since all pairs of socks cost the same amount, we now divide $6.87 by 3 to find the price of each pair of socks.

$6.87/3 = $2.29

Each pair of socks costs $2.29.

Answer: False

equilateral triangle means all the sides are the same so each one be 60 degrees

Answer:

FALSE.

Step-by-step explanation:

In an equilateral triangle, all angles are equal.

Since they add up to 180°, tke measure of each angle is

180/3 = 60°

Your triangle has two equal angles, so it is an isosceles triangle.

Answer:

the correct answer is c

Step-by-step explanation:

Answer:

Step-by-step explanation:

We now that Brian wants the piece of fabric between 49 and 53 inches, this range is expressed like this

[tex]49<x<53[/tex]

Now, to choose the right answer, we have to transform the from feet to inches and see which one falls into this interval.

We know that 1 ft equals 12 in. If we have [tex]4\frac{3}{4}=\frac{19}{4} ft[/tex], how much inches would be?

[tex]\frac{19}{4}ft\frac{12in}{1ft}=57in[/tex]

As you can see, the choice A is not the right answer because is more than 53.

We do the same process. We know that,  [tex]4\frac{1}{2}=\frac{9}{2}ft[/tex] how much inches would be?

[tex]\frac{9}{2}ft\frac{12in}{1ft}=54in[/tex]

Choice B is not the answer neither, because it's outside the interval.

[tex]4\frac{1}{4}=\frac{17}{4}ft[/tex] how much inches would be?

[tex]\frac{17}{4}ft\frac{12in}{1ft}=51in[/tex]

As you can observe, choice C is in the interval. Therefore, the right answer is choice C, because 51 inches is between 49 and 53 inches.