This graph represents a quadratic function. What is the value of a in this functions equation?
A. -1
B. 2
C. -2
D. 1

Answer:

(-3,-6)

Step-by-step explanation:

Answer:

(-3, -6)

Step-by-step explanation:

No my brain hurts from looking at that, maybe tomorrow...

Answer:

f(3) = 37

Step-by-step explanation:

If the formula for this arithmetic sequence is f(n)  = 19 + 6n, then the value of f(3) is 19 + 6(3), or f(3) = 37

Answer:

Step-by-step explanation:

Given triangle is equilateral since all three angles marked as congruent.

It means each interior angle measures 60°.

The angle (5x + 15)° is exterior angle.

We know exterior angle measure is same as the sum of non-adjacent interior angles:

Answer:

f(x)=3(-13)^x

Step-by-step explanation:

since we know that our x=0 then y=3(-13)^0

=3

put it in mind that during the indices we learnt that any number to the power zero is 1 and any number to the power 1 it is the number itself so we can continue to say

y=3(1)

=3

The speed of the plane is the rate of change of distance over time

The speed of the plane should be 453.65 mph southwest

The speed of the wind is given as:

[tex]\mathbf{S_w = 38.7mph}[/tex]

The expected speed of the plane is:

[tex]\mathbf{S_s = 452mph}[/tex]

So, the actual speed is calculated using the following Pythagoras theorem

[tex]\mathbf{S_{sw}^2 = S_w^2 + S_s^2}[/tex]

This gives

[tex]\mathbf{S_{sw}^2 = 38.7^2 + 452^2}[/tex]

[tex]\mathbf{S_{sw}^2 = 205801.69}[/tex]

Take square roots of both sides

[tex]\mathbf{S_{sw} = 453.65}[/tex]

Hence, the speed of the plane should be 453.65 mph southwest

Read more about speed at:

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Answer:

D: [tex]5x-8y=40[/tex]

Step-by-step explanation:

At a glance: Last one, it's the only one with different signs for x and y coefficient, and the graph is growing.

Some more reasoning: Write all of them in slope-intercept point:

[tex]A: y= -\frac58x +\frac52\\B: y= -\frac85x+4\\C: y= -\frac85x+8\\D:y=-\frac58x-5[/tex]

The only one with a compatible slope and intercept is D

Number crunching: replace the coordinates of either [tex](8;0)[/tex]or[tex](0;-5)[/tex]. As soon as the equality stops holding, that option isn't valid anymore.

Example: A w/ [tex](0;-5)[/tex]: [tex]\frac 52(0) +4(-5) = 10 \rightarrow -20 = 10[/tex] which isn't true, so A is out.

Answer:

192

Step-by-step explanation:

Given,

a = 8

b = 24

To find : ab = ?

ab

= 8 x 24

= 192

Answer:

192

Step-by-step explanation:

...................

Answer:

no.

It is because 5*5=25

Answer:

A)60°

B)140°

Step-by-step explanation:

Hope it can help you lovelots

#LEARN WITH BRAINLY

Answer:

$58,560

Step-by-step explanation:

First step: set up your proportion equation. Keeping the percents on the bottom, I set it up as $48,000/100% = $x/122%. I'm writing it as 122% rather than 22% so we don't have to add the increase in price to the original price later. You can see that, in order to get from 100 to 48,000, you need to multiply by 480, so you can do this to 122 to get x. Your teacher might, instead, want you to cross multiply. Do what's expected of you. Either way, your result should be $58,560. Check that it makes sense by checking that it's an increase and that it looks reasonable for the amount of the increase and you're done.

Answer:  314 -(112)

-314 -(112)= -314 * -112

Step-by-step explanation:

Answer:

the answer  is 8

Step-by-step explanation:

yes Ezra can plant 8 sunflowers

hope this helpsss :)

Answer:

B) 5 gallons

Step-by-step explanation:

4 quarts = 1 gallon

multiply each number by 5

20 quarters = 5 gallons

Answer:

5

Step-by-step explanation:

If there are 4 quarts in a gallon and you are given 20 quarts divide 20 by 4 and you get 5

Answer:

D) 5

Step-by-step explanation:

To find the unit rate or the amount of shoes per hour. Take the amount of shoes sold and divide by how many hours. On Monday he sold (15/3) or 5 shoes per hour and on Tuesday he sold (20/4) or 5 shoes sold per hour again.

[tex]\large\underline{\sf{Solution-}}[/tex]

[tex]\sf \dfrac{x + 1}{10} - \dfrac{3(x - 1)}{5} = 2[/tex]

[tex]\sf\longmapsto \dfrac{x + 1}{10} - \dfrac{3x - 3}{5} = 2[/tex]

[tex]\sf\longmapsto \dfrac{(x + 1) - 2(3x - 3)}{10} = 2[/tex]

[tex]\sf\longmapsto \dfrac{x + 1 - (6x - 6)}{10} = 2[/tex]

[tex]\sf\longmapsto \dfrac{x + 1 - 6x + 6}{10} = 2[/tex]

[tex]\sf\longmapsto \dfrac{ - 5x + 7}{10} = 2[/tex]

[tex]\sf\longmapsto - 5x + 7 = 20[/tex]

[tex]\sf\longmapsto - 5x = 20 - 7[/tex]

[tex]\sf\longmapsto - 5x = 13[/tex]

[tex]\sf\therefore x = - \dfrac{13}{5} [/tex]

Hence, the value of x will be -13/5 respectively.

[tex] \huge \boxed{\mathfrak{Question} \downarrow}[/tex]

[tex]\frac{x + 1}{10} - \frac{3(x - 1)}{5} = 2 \\ [/tex]

[tex] \large \boxed{\mathfrak{Answer \: with \: Explanation} \downarrow}[/tex]

[tex]\frac { x + 1 } { 10 } - \frac { 3 ( x - 1 ) } { 5 } = 2 \\ \frac { x + 1 } { 10 } - \frac { 3 ( x - 1 ) } { 5 } = \frac{2}{1} [/tex]

Take a look at the denominators. The denominators are 10, 5 & 1. Their LCM is 10. So, multiply the fractions on both the sides of the equation by 10.

[tex]\frac { x + 1 } { 10 } - \frac { 3 ( x - 1 ) } { 5 } = \frac{2}{1} \\ \frac{x + 1}{10} \times \frac{1}{1} - \frac{3x - 3}{5} \times \frac{2}{2} = \frac{2}{1} \times \frac{10}{10} \\ \frac{x + 1}{10} - \frac{6x - 6}{10} = \frac{20}{10} [/tex]

Now cancel the denominators (as they have the same value) & take the numerators.

[tex]x + 1 - (6x - 6) = 20 \\ [/tex]

Now, simplify it.

[tex]x + 1 - (6x - 6) = 20 \\ x + 1 - 6x + 6 = 20 \\ x - 6x + 1 + 6 = 20 \\ - 5x + 7 = 20 \\ - 5x = 13 \\ x = -\frac{13}{5} \\ \boxed{ \boxed{ \bf x = - \frac{13}{5} =\: - 2 \frac{3}{5} = - 2.6}}[/tex]

__________________

Hope it'll help you!

ℓu¢αzz ッ

Answer:

x < -3

Step-by-step explanation:

its correct that the answer.

Step-by-step explanation:

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Answer:

Y= 5x-6

Step-by-step explanation:

The slope intercept form is y=mx+b. The m stands for your slope. The b stands for the y-intercept. So, plug in the slope of 5 for m, then plug in -6 of b and then your equation should end up as y=5x-6. Hope this helps :)

Answer:

here is the answer x= 5/3

Step-by-step explanation:

Answer:

10

Step-by-step explanation:

f(x)=f(6) means x=6

Now, as 6>3 we use the formula for x>3

Substituting 6 into 1/2x+7 we get,

1/2(6)+7

=3+7

=10

The value of function at x= 6 is 10.

A piecewise-defined function in mathematics is one that is composed of several smaller functions, each of which has a certain interval of the domain it applies to. Instead of being a property of the function itself, piecewise definition is a means to express the function.

We have,

f(x) = 3x -1 , x<3

1/2x + 7, x>3

Now, for x = 6 which falls in condition x>3

f(6) = 1/2(6)+ 7

f(6) = 3 + 7

f(6)= 10

Learn more about Piecewise function here:

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Step-by-step explanation:

x = -2

y = -3

= x² - y²

= (-2)² - (-3)²

= 4 - 9

= -5

Answer:

24,25,26

Step-by-step explanation:

Answer:

Step-by-step explanation:

25

Answer:

D. The axis of symmetry is x = 1.5 and the vertex is (1.5, 0).

Step-by-step explanation:

y=4x^2-12x+9:\quad \mathrm{Parabola\:with\:vertex\:at}\:\left(h,\:k\right)=\left(\frac{3}{2},\:0\right),\:\mathrm{and\:focal\:length}\:|p|=\frac{1}{16}

To find the vertex of this parabola, "complete the square:"  Rewrite y = 4x2 - 12x + 9 in the form y = 4(x - h)^2 + k:

y = 4x^2 - 12x + 9  =>  y = 4(x^2 - 3x) + 9.

Now complete the square of x^2 - 3x:  Take half of -3 and square the result, obtaining (-3/2)^2, or 9/4.  Add 9/4 to x^2 - 3x and then subtract 9/4 from the result:  We get x^2 - 3x + 9/4 - 9/4.  Substitute this result back into

y = 4(x^2 - 3x) + 9:  y = 4(x^2 - 3x + 9/4 - 9/4) + 9

and then rewrite the perfect square x^2 - 3 + 9/4 as the square of a binomial:

                                y = 4(x - 3/2)^2 - 9/4) + 9.  This simplifies to:

                                y = 4(x - 3/2)^2 + 0.

Thus, the vertex is at            (3/2, 0) and the axis of symmetry is x = 3/2.  This agrees with Answer B.

Given : equation y = 4x^2 − 12x + 9

To Find  :

A) The axis of symmetry is x = 0 and the vertex is (0,9).

B)The axis of symmetry is x= 1.5 and the vertex is (1.5, 0).

C)The axis of symmetry is x = 4 and the vertex is (4, -12).

D)The axis of symmetry is x = -1.5 and the vertex is (-1.5, 36).

Solution:

y =  4x² - 12x  + 9

=> y = (2x)² - 2(2x)3  + 3²

=> y = (2x - 3)²

=> y = 4(x - 3/2)²

=> y = 4(x - 1.5)²

Axis of symmetry is x= 1.5  

Vertex  = (1.5 , 0)

The axis of symmetry is x= 1.5 and the vertex is (1.5, 0).

Answer:

y=1/2-2

Step-by-step explanation:

Answer:

[tex](2 + \sqrt{3}) - (1 + \sqrt{3})i[/tex]

Answer:

  (b)  (2+√3) -(1+√3)i

Step-by-step explanation:

Add like terms. Real terms are added; imaginary terms are added.

  (√3 -i) + (2-√3i) = (√3 +2) +(-i -√3i)

  = (√3 +2) -i(1 +√3) . . . . . the common factor of -i can be factored out

  = (2 +√3) -(1 +√3)i

Step-by-step explanation:

we have one large rectangle and 2 small right-angled triangles to add.

the area of the rectangle is easy : 15×25 = 375

the right-angled triangle on the long side has one side = 5, and the "invisible" side is 25 - 12 - 5 = 8.

these 2 sides are hitting each other in a right angle and can therefore be used as baseline and height of the triangle.

the area of a triangle is baseline×height/2.

so, the area of the this triangle is 8×5/2 = 20.

the right-angled triangle on the right short side has one side = 5, and the "invisible" side is 15 - 10 = 5.

these 2 sides are hitting each other in a right angle and can therefore be used as baseline and height of the triangle.

so, the area of the this triangle is 5×5/2 = 12.5.

so the total area is

375 + 20 + 12.5 = 407.5

Answer:

Answer is y = 25/4

Answer:

the answer is.... 0.133

Step-by-step explanation:

hope it helps :D

Answer:

8 - (-2) = 10 there you go!

Step-by-step explanation:

Answer:

When you subtract a negative numbe, it is the same as adding the number. For example, 8-(-2) can be written as 8+2. Two negatives make a positive.

:)