Work out, giving your answer in its simplest form:
32 + 2
응
help

Step-by-step explanation:

First. plug in values of x and try to form a curve. Since this a quadratic, we will get a parabola( a U shaped graph).

Plug in values from -3 to 4.

for x.

[tex]f( - 3) = 2( - 3) {}^{2} - 3( - 3) - 5 = 22[/tex]

[tex]f( - 2) = 2( - 2) {}^{2} - 3( - 2) - 5 = 9[/tex]

[tex]f( - 1) = 2 + 3 - 5 = 0[/tex]

Keep going until you get until you get to 4 for x.

The graph above should be your curve.

1. The roots of a quadratic are the x values when y=0, here it is 2.5 and -1.

2. Since the leading degree coeffecient is positive, we have a minimum value. It hard to tell the minimum here so let put this in vertex form, we have

[tex] 2{x}^{2} - 3x - 5[/tex]

First. we do

[tex] \frac{ - b}{2a} [/tex]

[tex] \frac{ - ( - 3)}{4} [/tex]

[tex] = \frac{3}{4} [/tex]

Now, we plug that in to find our y intercept of the minimum.

[tex]2( \frac{3}{4} ) {}^{2} - 3( \frac{3}{4} ) - 5 = \frac{18}{16} - \frac{9}{4} - 5 = - \frac{ 18}{16} - 5 = - \frac{98}{16} [/tex]

So we have

(3/4,-98/16).

or

(3/4,-6.125).

Step-by-step explanation:

Divide 48865.00÷7=6980.71 per week

Answer:

1250 mi/hr or 558.8 m/s ....both applicable as required question

Explanation:

Speed = Distance/ Time

Speed =  10 miles / 0.008 hours

Speed = 1250 mi/hr and also as 558.8 m/s

Answer:

Step-by-step explanation:

We know that:

Solution:

Hence, the speed of the supersonic jet is 1250 miles/h.

Answer:

B. 20.41

Step-by-step explanation:

I hope this helps! pls brainliest:D

Answer:

$4660

Step-by-step explanation:

233 x 20 = 4660

Answer:

$4660

Step-by-step explanation:

233 multiplied by 20 is 4660

Answer:

[tex]\boxed{\tt y=-\cfrac{4}{3} \:x+2}[/tex]

Step-by-step explanation:

Given the graph, we can see that the line passes through (0,2) and (3,-2).

We are given the y-intercept → (0,2), now, find the slope-intercept form of the line.

[tex]\tt slope=\cfrac{(-2)-2}{3-0}\:\:\boxed{\tt Subtract}[/tex]

[tex]\tt =\cfrac{-4}{3}[/tex]

[tex]\tt =-\cfrac{4}{3}[/tex]

Therefore, the equation that represents the line is:-

[tex]\boxed{\tt y=-\cfrac{4}{3} \:x+2}[/tex]

_____________________________

Answer:

48 balloons

Step-by-step explanation:

All you have to do is divide 864 by 18.

864/18 = 48

Answer:

48 balloons per day

Step-by-step explanation:

52 • 2/3 = sale price

52 • 2 = 104

104 / 3 = 34 and 2 / 3

$34.66 sales price

Answer:

6/18 which reduces to 1/3 or 33.3%

Step-by-step explanation:

based on prior 18 days, the probability would be 6/18

Answer:

it is -x^3 + 7x^2 -2x if you meant subtract 2x^3 - 4x^2 But if you meant subtract. 2x^3 - 4x +2 then the answer is -x^3 +3x^2 +2x -2

Step-by-step explanation:

x³ + y³ + 3x²y

= (2)³ +(2)³ + 3 × (2)² ×2

= 8 +8 + 6× 4

= 16 + 24

= 40

Answer:40Step-by-step explanation: Put the value of X and y in the given equation (2)*3+(2)*3+3(2)*2(2) = 8+8+24 = 40

Answer:16a+20

Step-by-step explanation:multiply 4 times 4a in the parentheses. And 4a times 5. Hopefully this helps.

Answer:

B, C, D

Step-by-step explanation:

Use the distributive property. Multiply both terms inside the parentheses by 4.

4(4a + 5) = 4 × 4a + 4 × 5 = 16a + 20

Now let's look at each choice:

A. 16a + 5, not equal to 16a + 20. Incorrect.

B. 16a + 20. Correct.

C. 12a + 20 + 4a = 12a + 4a + 20 = 16a + 20. Correct.

D. 2(8a + 10) = 2 × 8a + 2 × 10 = 16a + 20. Correct.

E. 16a + 5 + 4 = 16a + 9, not equal to 16a + 20. Incorrect.

Answer:

108 inches long

Usando proporciones, hay que habían 188 entradas en el total.

Una proporción es una fracción de la cantidad total.

En este problema, hay que dos quintos de el total de entradas n restanban, e la cantidad equivalente a esta proporción es de 75 entradas, o sea:

[tex]\frac{2}{5}n = 75[/tex]

[tex]n = \frac{75 \times 5}{2}[/tex]

[tex]n = 188[/tex]

Habían 188 entradas en el total.

Puede-se aprender más a cerca de proporciones en brainly.com/question/26395519

Answer:
$45

Step-by-step explanation:

100 - 10 = 90

90/100 = 0.9

50 * 0.9 = 45

Answer:

1. Im gonna say D. 126

2. 1/2 (can't see the answer choices clearly)

3. 60º

4. 9

5. D

Step-by-step explanation:

Answer:For a rectangle the expression would be:

A

=

(

x

+

6

)

⋅

(

x

−

3

)

or

A

=

x

2

−

3

x

−

18

Explanation:

The formula for area (assuming this is a rectangle) is:

A

=

l

⋅

w

where

A

is the area of the rectangle,

l

is the length of the rectangle and

w

is the width of the rectangle.

In this problem we are provided the length and width which we can substitute for the

l

and

w

is the formula to give:

A

=

(

x

+

6

)

⋅

(

x

−

3

)

We can expand this to the form of a quadratic equation by cross multiplying to give:

A

=

x

2

+

6

x

−

3

x

−

18

A

=

x

2

−

3

x

−

18

Step-by-step Explanation: The formula for area (assuming this is a rectangle) is: A=l⋅w where A is the area of the rectangle, l is the length of the rectangle and w is the width of the rectangle.

Answer:

Step-by-step explanation:

Consider -7-4r=-15. Adding 7 on both sides of the equation,

-4r=-8 --- r = 2

Plug in value of r in r/2 + 9 = 2/2+9 = 1+9 = 10

Answer:

2 1/12

Step-by-step explanation:

     6 8/12

-    4 7/12

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

    2 1/12

Answer: 2 1/12

Answer: 2 an 1/12

Step-by-step explanation:

You can do this 2 ways
1. 6 and 8/12 - 4 and 7/12
--Start by subtracting the wholes.
-6-4=2
--Next subtract the individual fractions
-8/12-7/12= 1/12
-- All together you would get 2 and 1/12
However most questions might not be this easy (the next way will work every time)
2. 6 and 8/12 - 4 and 7/12
--Start by Making the numbers into improper fractions( that means that the number on top is larger than the one on bottom)
-(do this by multiplying the whole (6 or 4) by the denominator (12) then add that number to the numerator of the fraction)

6*12=72  
72/12 + 8/12 = 80/12
6 and 8/12= 80/12

4*12=48
48/12 +7/12 = 55/12
4 and 7/12= 55/12
--Next subtract the new improper fractions
-80/12-55/12= 25/12
-- last convert this improper fraction into a mixed fraction
You do this by seeing how many times the denominator (12) can go into the numerator(25)
12 can go into 25 two times because 12*2=24
This 2 is the whole number

Because 24 is one less than 25 there is 1 left over

This is the numerator of the fraction  2 AND (1/12)

Answer:

Constantly watching the markets

Step-by-step explanation:

Answer:

Step-by-step explanation:

Any variable raised to 0 is 1

⇒ [tex]a^{0}=1[/tex]

[tex]a^{-m}=\dfrac{1}{a^{m}} \\\\\dfrac{1}{a^{-m}}=a^{m}\\\\[/tex]

[tex]\dfrac{3^{-2}*k^{0}*w^{0}}{w^{-6}}=\dfrac{3^{-2}}{w^{-6}}\\\\\\=\dfrac{1}{3^{2}}*w^{6}\\\\\\=\dfrac{w^{6}}{3^{2}}[/tex]

Answer:

b

Step-by-step explanation:

Step-by-step explanation:

[tex]5x - 7(x + 1) > - 9 \\ \\ 5x - 7x - 7 > - 9 \\ \\ - 2x - 7 > - 9 \\ \\ - 2x > - 9 + 7 \\ \\ - 2x - 2 \\ \\ x < - \frac{2}{2} \\ \\ x < 1[/tex]

Answer: (3, 3)

Step-by-step explanation:

the graphs of [tex]f[/tex] and [tex]f^{-1[/tex] are flipped: if the point [tex](x, y)[/tex] is on the graph of [tex]f[/tex], then the point [tex](y, x)[/tex] is on the graph of [tex]f^{-1[/tex].

Any points of intersection will satisfy [tex](x, y) = (y, x)[/tex]. A point that satisfies this property must have the same x and y coordinate. (Think about it.) The only point on [tex]f[/tex] like that is [tex](3, 3)[/tex], so that is the point of intersection.

Answer:

610 squares on the final day.

Step-by-step explanation:

490 Sunday
510 Monday
530 Tuesday
550 Wednesday
570 Thursday
590 Friday
610 Saturday