Find the vertex of this parabola:
y = -5x2 - 10x - 15
Enter the correct answer.

Answer:

.25

Step-by-step explanation:

8/32 = 1/4

1/4 = .25

Answer:

0.25

Step-by-step explanation:

Answer:

x > -99/4

Step-by-step explanation:

I must assume that you meant (-2/5)x -9<9/10.

This inequality has 3 terms.  The LCD is 10.  Multiply each term by 10 and reduce the result:

10(-2/5)x - 10(9) < 10(9/10), or:

-4x - 90 < 9

Adding 90 to both sides results in:

-4x < 99

Here we must divide by a negative number (that is, by -4).  This requires reversing the direction of the inequality sign:

x > -99/4 is the final solution.

Turtle is closest to the sea level.

In which horizontal straight line, we represent integer numbers from low value to high, from left to right, is called number line.

Zero is in the middle of that line.

If we consider the number line, then in the left side of zero, we have all the negative values, where .... < -5< -4< -3< -2< -1< 0

And in the right side of zero, we have all the positive values, where 0<1<2<3<4<5 and so on....

We know that, Level zero is called the sea level.

So, if we assume number line in vertical way, then the zero will be the sea level.

Here, if we arrange levels of animals from low to high, we get,

Sea lion(-10)<Shark(-7)<Turtle(-6)<0 <Seagull(+24)

We see that, zero is in between -6 & 24

The distance between 0 & -6 is 6 units whereas between 0 & 24 is 24 units.

So, Turtle is closest to sea level.

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Sea Lion has the lowest value indicating its proximity to sea level. Hence, the correct option is second.

Sea Lion is the animal closest to sea level with a value of -10. This means it is approximately 10 meters below sea level. In comparison, the Shark has a value of -7, the Turtle has a value of -6, and the Seagull has a value of 24, making the Sea Lion the closest to sea level.

Its 70%

392/560 = 0.7

0.7 * 100 = 70%

[tex]\bf \qquad \qquad \textit{direct proportional variation} \\\\ \textit{\underline{y} varies directly with \underline{x}}\qquad \qquad \stackrel{\textit{constant of variation}}{y=\stackrel{\downarrow }{k}x~\hfill } \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ \stackrel{\textit{"u" varies directly with "v"}}{u=kv}\qquad \textit{we know that } \begin{cases} k=0.6\\ v=7.8 \end{cases} \\\\\\ u=(0.6)(7.8)\implies u=4.68[/tex]

Answer:

21

Step-by-step explanation:

If she does 3 pushups every morning, than you need to multiply 3x7

3 sets of 8 pushups a day (can't forget that information!! its critical the the problem!!!) 7 days a week

3*8 = 24

24*7 = 168

168 pushups a week

Answer:700000

Step-by-step explanation:

The number of zeros for hundred thousand is five .Thus100,000

So you start by counting the zeros from the right hand side of the figure 672000 to the left till your counting reach 5.

So wen you get to the fifth zero check the number that it falls on . Thus 7 will be that number,And since it's greater than 5 you add 1 to the prefix of the 7 which is 6 to be become 6+1=7 , hence the answer is 700000 to the nearest hundred thousand.

Answer:

700 000

Step-by-step explanation:

Andrew rounded the number 672 726 to the nearest hundred thousand.

   Hth           TH          Th           H             T           O

     ↓               ↓             ↓           ↓             ↓            ↓

    6               7              2           7              2           6

now round the number to nearest hundred thousand.

hundred thousand digit in 672726 is 7

If rounding number is greater than equal to 5 then next number increase by 1.

If rounding number is less than 5 then next number does not change.

here rounding number is 7 > 5

So, next digit 6 change to 7

Rounded number  = 700 000

672 726   → 700 000

Andrew did

672 726   → 672 000

Mistake: Rounded to thousand instead of hundred thousand

Correct rounded number = 700 000

Answer:

Step-by-step explanation:

<1 = <5                              Corresponding angles.

<5 + <6 = 180°                  Angles making up the same straight line are supplementary.

<1 + <6 = 180°                   <1 and <5 are equal.

<6 = 180° - <1                    If we know <1 we can easily find six. It is <1s supplement.

Answer:

  11/18

Step-by-step explanation:

The fraction you spent is the ratio of the amount you spent to the amount you started with:

__

  $11/$18 = 11/18 . . . . fraction spent on movie tickets

$40 will be taken off the bill and you will be paying a total of $120.

Multiply 160 by .25 to find the amount taken off ($40), and then subtract from the total to find the amount that you will be paying ($120).

Have a great day!

Answer:

You will pay $120

Step-by-step explanation:

There are many methods in solving this percentage equation, but this is by far my favorite. Here is how it works.

1.Take 160, the original amount.         160

2.Then take the percent amount        .25

and convert into decimal.           ---------------------

3. Multiply the numbers                   40.00

4. Subtract the product from         160

original amount, 160.                  -    40

                                           --------------------

                                             $120

That is how I would get my answer. I am very sorry if the formatting messes up, but it is this basic problem:     160*.25=40.00 then 160-40=120

Answer:

a = 15

Step-by-step explanation:

Given

3a + b = 54 ← substitute b = 9

3a + 9 = 54 ( subtract 9 from both sides )

3a = 45 ( divide both sides by 3 )

a = 15

An equation is formed when two equal expressions. The value of a in the equation 3a+b=54, when b equals 9 is 15.

An equation is formed when two equal expressions are equated together with the help of an equal sign '='.

The given statement "3 a plus b equals 54" in terms of the equation can be written as,

3a + b = 54

Given an equation 3a+b=54. Also, the value of b in the given equation is 9. Therefore, the value of a in the given equation can be written as,

3a + 9 = 54

Subtract 9 from both sides of the equation,

3a + 9 - 9 = 54 - 9

3a = 45

Divide both the sides of the equation by a,

3a/3 = 45/3

a = 15

Hence,  the value of a in the equation 3a+b=54, when b equals 9 is 15.

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Answer:

Step-by-step explanation:

Answer:

The solution to 10m -28 = 6 -7m​ is m = 2.

Step-by-step explanation:

Given 10m - 28 = 6 - 7m ⇒ 10m + 7m = 6 + 28 ⇒ 17m = 34 ⇒m= 34/17

⇒ m = 2.

Answer:

8 Cups of Sugar.

Step-by-step explanation:

3x4=12 cups of water.

2x4=8 cups of sugar

Answer:

[tex]x^3-5x^2-2x+24[/tex]

Step-by-step explanation:

the polynomial function of least degree whose only zeros are -2, 3, and 4

Factors are -2,3 and 4

First we write the polynomial in factor form

If 'a' is a zero of the polynomial then (x-a) is a factor

Factors are -2,3 and 4

Polynomial is [tex](x-(-2))(x-3)(x-4)[/tex]

[tex](x+2)(x-3)(x-4)[/tex]

Now we multiply all the parenthesis

[tex](x+2)(x-3)(x-4)[/tex]

[tex](x^2-3x+2x-6)(x-4)[/tex]

[tex](x^2-x-6)(x-4)[/tex]

[tex]x^3-4x^2-x^2+4x-6x+24[/tex]

[tex]x^3-5x^2-2x+24[/tex]

Answer: 1 1/2

Step-by-step explanation: 5/8 + 7/8

= 12/8

simplifies to 1 1/2

Hey!

--------------------------------

Polygon: Heptagon

Vertices: 7

Sum of angles: 900°

--------------------------------

Solution:

158 + 120 + 139 + 121 + 125 + 126 = 789

900 - 789 = 111°

--------------------------------

Answer:

x = 111°

--------------------------------

Hope This Helped! Good Luck!

Answer: $12

Step-by-step explanation:

0.05 x 240 = $12

Hope this helps!

Answer:

9w−7x−1

Step-by-step explanation:

Simplify the expression.

Answer:

125-(-114)=239

Step-by-step explanation:

Change the subtraction to addition and change the negative in the second number to a positive (it's the opposite). Then add them. 125+114=239

CAN EXPLAIN FURTHER

Answer:

After these reflections, the coordinates of P' will be P'(4,-4)

Step-by-step explanation:

The question is

After these reflections, the coordinates of P' will be?

we have

Triangle PQR, with coordinates P(-4, -4), Q(-1, -3), and R(-3, -1)

Part 1) Reflect triangle PQR across the x-axis

we know that

The rule of the reflection of a point across the x-axis is

(x,y) -----> (x,-y)

Applying the rule of the reflection across the x-axis at the coordinates of triangle PQR

P(-4, -4) -----> P'''(-4,4)

Q(-1, -3) -----> Q'''(-1, 3)

R(-3, -1) ----> R'''(-3, 1)

Part 2) Reflect triangle P'''Q'''R''' across the y-axis

we know that

The rule of the reflection of a point across the y-axis is

(x,y) -----> (-x,y)

Applying the rule of the reflection across the y-axis at the coordinates of triangle P'''Q'''R'''

P'''(-4,4) -----> P''(4,4)

Q'''(-1, 3) ---> Q''(1, 3)

R'''(-3, 1) ---> R''(3, 1)

Part 3) Reflect triangle P''Q''R'' across the x-axis again

we know that

The rule of the reflection of a point across the x-axis is

(x,y) -----> (x,-y)

Applying the rule of the reflection across the x-axis at the coordinates of triangle P''Q''R''

P''(4,4) ---->  P'(4,-4)

Q''(1, 3) ----> Q'(1, -3)

R''(3, 1) ----> R'(3, -1)

therefore

After these reflections, the coordinates of P' will be P'(4,-4)

Answer:

$58.50

Step-by-step explanation:

It is given that the the student council pays

For per french fry = $0.85

For per soda fry = $1.20

Discount on the combo of  fries and soda = $0.75

Total revenue for one combo = $0.85 + $1.20 - $0.75 = $1.30

Since the total revenue for one combo is $1.30, therefore the total revenue for 45 combo is

Total revenue for 45 combo = 45 × $1.30 = $58.50

Therefore, they will make $58.50 if they sell 45 combos.

Answer:

The quantity sold by Annette was $600

The quantity sold by Barb was $480

The quantity sold by Carlita was $400

Step-by-step explanation:

Let

x ----> quantity sold by Annette

y ---> quantity sold by Barb

z ---> quantity sold by Carlita

we know that

[tex]x+y+z=1,480[/tex] ----> equation A

[tex]x=y+120[/tex] ----> equation B

[tex]y+z=x+280[/tex] ----> equation C

substitute equation C in equation A and solve for x

[tex]x+(x+280)=1,480[/tex]

[tex]2x=1,480-280[/tex]

[tex]2x=1,200[/tex]

[tex]x=\$600[/tex]

Find the value of y

[tex]x=y+120[/tex]

[tex]600=y+120[/tex]

[tex]y=600-120=\$480[/tex]

Find the value of z

[tex]x+y+z=1,480[/tex]

[tex]600+480+z=1,480[/tex]

[tex]1,080+z=1,480[/tex]

[tex]z=\$400[/tex]

therefore

The quantity sold by Annette was $600

The quantity sold by Barb was $480

The quantity sold by Carlita was $400

The solution involves setting up a system of three linear equations based on the given problem. By solving these equations methodically, we find that Barb, Annette, and Carlita sold $400, $520, and $560 of clothing respectively.

The problem involves setting up and solving a system of linear equations. Here's how we approach it:

So, Barb sold $400 of clothing, Carlita sold $560, and Annette sold $520.

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Answer:

x>48/5 or x<-3/2

Step-by-step explanation:

Solve for x

a) 12x + 7 < -11

12x < -11-7

12x < -18

x < -18/12

⇒ Simplify: divide the numerator by 6

x < -3/2

b) 5x – 8 > 40

5x > 40+8

5x > 48

x > 48/5

Therefore, x>48/5 or x<-3/2.

X measures 30°, Y measures 67°, and Z measures 83°.

Since the sum of the measures of the angles of a triangle is 180, and the sum of the measures of the second and third angles is five times the measure of the first angle, and the third angle is 16 more than the second, for find the measures of the three angles, the following calculation must be performed, posing linear equations:

Therefore, X measures 30 °, Y measures 67 °, and Z measures 83 °.

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Let x, y, and z represent the measures of the first, second, and third angles of the triangle. We can create a system of equations to find the values of x, y, and z. Solving this system, we find that x = 28, y = 32, and z = 48.

Let's use x, y, and z to represent the measures of the first, second, and third angles, respectively.

The sum of the measures of the second and third angles is five times the measure of the first angle, so we have the equation y + z = 5x.

The third angle is 16 more than the second, so z = y + 16.

Since the sum of the measures of the angles of a triangle is 180, we have the equation x + y + z = 180.

Now we can solve these equations to find the measures of the three angles.

Substituting z = y + 16 into the equation y + z = 5x, we get y + y + 16 = 5x, which simplifies to 2y + 16 = 5x.

Substituting z = y + 16 into the equation x + y + z = 180, we get x + y + y + 16 = 180, which simplifies to x + 2y + 16 = 180.

Now we have a system of equations:

2y + 16 = 5x

x + 2y + 16 = 180

Solving this system, we find that x = 28, y = 32, and z = 48.

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The factor outside the parentheses is -1. Distribute using that factor.

2 - (4 - x) = 7x - 5x

-1 * 4 = -4 and -1 * -x = x

2 - 4 + x = 7x - 5x

Simplify.

-2 + x = 2x

x = 2x + 2

-x = 2

x = -2

x = -2

Answer:

B. 60.03 meters.

Step-by-step explanation:

We use the equation of motion under gravity:

h = ut - 0.5gt^2      where h = height, t = time and u = initial velocity.

h = (0)(3.5) - 0.5 * -9.8 * 3.5^2

= 60.025 m.

The height of the tower is found by utilizing the equation of motion for free fall. When the given values are input into the equation, the result is 60.03 meters. Hence, the correct answer is option B (60.03 meters).

This is a question about the physics of free fall motion. In problems of free fall, we consider the motion under the gravitational force alone. We disregard air resistance to simplify our calculations. The height (h) of the tower can be calculated using the equation of motion: h = 0.5 * g * t^2, where g is the acceleration due to gravity and t is the time taken for the ball to reach the ground.

Plugging the values into the formula, h = 0.5 * -9.8 m/s^2 * (3.5 s)^2 = -0.5 * -9.8 * 12.25 = 60.03 meters. The distance is positive, because we are considering the magnitude of the height, rather than the directional displacement. So, option B (60.03 meters) is the correct answer.

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Answer:

The statement is false. 12 ≠ -18

Step-by-step explanation:

2(3x + 6) = 3(2x - 6)

6x + 12 = 6x - 18

-6x           -6x

12 ≠ -18

[tex]\bf ~\hspace{7em}\textit{negative exponents} \\\\ a^{-n} \implies \cfrac{1}{a^n} ~\hspace{4.5em} a^n\implies \cfrac{1}{a^{-n}} ~\hspace{4.5em} \cfrac{a^n}{a^m}\implies a^na^{-m}\implies a^{n-m} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ \cfrac{(3^{-2})^2}{3^{-3}}\implies \cfrac{3^{-2\cdot 2}}{3^{-3}}\implies \cfrac{3^{-4}}{3^{-3}}\implies \cfrac{1}{3^{-3}\cdot 3^4}\implies \cfrac{1}{3^{-3+4}}\implies \cfrac{1}{3^1}\implies \cfrac{1}{3}[/tex]

The range is the y-values.

Let r = range

r = {0, -3, -9, 5, 7}

Answer:

the answer is

x′ = x − 3

y′ = y − 2

Step-by-step explanation:

Answer:

x′ = x − 3

y′ = y − 2

Sample Answer for Edmentum and Plato users

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