Solve the quadratic equation for x. What is one of the roots?

2x2 + 9x − 5 = 0
A) −
1
2
B) −
1
5
Eliminate
C)
1
2
D)
1
5

​

Answer:

r = 13

Step-by-step explanation:

-3r=-26-13

-3r=-39 divide by 3

r=13

Step-by-step explanation:

13 - 3r = -26

13 − 3r −13 = −26 − 13

−3r=−39

divide by 3

r = 13

Answer:

1924

Step-by-step explanation:

1998

-   75

--------

1924 so he was born in 1924

Step-by-step explanation:

2x+4 +3x = 2x +2 +1

4+x= 2x+3

4-3=2x-x

1=x

x=1

Answer:

line b

Step-by-step explanation:

It is irrational.

π is an irrational number.

It follows that -2π is also irrational number.

Answer:

180

Mathematically, 10 times less than 20 would be: Take 20, subtract (10 x 20). Answer: -180.

Answer:

3/4

Step-by-step explanation:

3/5(1+p)-21/20

3/5+3/5p=21/20

3/5p=21/20-3/5

3/5p=21/20-12/20

3/5p=9/20

p=9/20÷3/5

p=9/20*5/3

p=45/60

p=3/4

Answer:

f ^−1(x)=x/12+1/2

Step-by-step explanation:

Answer:

x= -1

Step-by-step explanation:

Answer:

x = -1

Step-by-step explanation:

3x+2(x-9)=8x+x-14 ;; equation

simplify the equation to the form

3x+2(x-9)=8x+x-14

reorder the terms in parentheses

3x+(+2x-18)=8x+x-14

remove unnecessary parentheses

+3x+2x-18=+8x+x-14

move all terms containing x to the left and all other terms to the right.

+3x+2x-8x-1x=-14+18

simplify left and right side of the equation.

-4x=+4

divide both sides of the equation by -4 to get x.

x=-1

Answer:

x= - [tex]\frac{1}{2}[/tex]

Step-by-step explanation:

Given

- 6x + 9 - 4x = 14, that is

- 10x + 9 = 14 ( subtract 9 from both sides )

- 10x = 5 ( divide both sides by - 10 )

x = [tex]\frac{5}{-10}[/tex] = - [tex]\frac{1}{2}[/tex]

Answer:

weird

Step-by-step explanation:

Answer:

59/50

Step-by-step explanation:

118/100 divided by 2/2

=59/50

Answer:

Not sure but that's my answer

Answer:

$21.48

Step-by-step explanation:

0.12*179=21.48

We know that 6x(-7) is -42 and we also know that 6+(-7) is -1.

So we can write

[tex]x^2+6x-7x-42[/tex]

[tex]x(x+6)-7(x+6)[/tex]

[tex](x-7)(x+6)[/tex]

So our solutions are [tex]x=7,-6[/tex]

Answer:

D. Malleability because he is most likely going to show how you can easily roll pizza dough

Step-by-step explanation:

Answer:

malleability or D

Step-by-step explanation:

Answer:

let M(-3,-4) be (x1, Y1)

    T(5,0) be (x2,y2)

m:n = 2 : 3

using section formula

Q(x,y) =  {mx2 + nx1/(m+n), my2 + ny1/(m+n)}

        { ( 10 -9)/5, (0 -12)/5}

         (1/5, -12/5)

This could be answer if internally

Answer:

Ross is correct. He is right because if you do 11- (-2) the double negatives turn into a positive and the answer is 13.

The answer is "Yes", Ross is right, and the temperature change will be 13 °F.

The four fundamental operations of arithmetic are addition, subtraction, multiplication, and division of two or even more items.

Included in them is the study of integers, especially the order of operations, which is important for all other areas of mathematics, notably algebra, data management, and geometry.

As per the mentioned data in the question,

The afternoon temperature in Biscoff Bay = -2 °F

The temperature rose at midnight = 11 °F

Then, the change in temperature will be,

It is changing from -2 °F to 11 °F then,

= 11 - (-2) = 13 °F

To know more about arithmetic operations:

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Answer:

2^5 *3

Step-by-step explanation:

You can solve this multiple ways but should get 2^5*3

Answer:

[tex]2^5*3[/tex]

Step-by-step explanation:

[tex]96\\\\=2*48\\\\=2*2*24\\\\=2*2*2*12\\\\=2*2*2*2*6\\\\=2*2*2*2*2*3\\\\=2^{5}*3[/tex]

Answer:

Area = [tex]\frac{1}{2}x^{9}[/tex]

Step-by-step explanation:

From the graph attached,

Triangle given is a right triangle.

This triangle ha three vertices (0, y), (x, y) and (0, 0).

Therefore, measure of the base = x units

And measure of the height of the triangle = y units

Area of a triangle = [tex]\frac{1}{2}(\text{Base})(\text{Height})[/tex]

                             = [tex]\frac{1}{2}(x)(y)[/tex]

Since, y = [tex]x^{8}[/tex]

Therefore, Area of the triangle = [tex]\frac{1}{2}(x)(x)^8[/tex]

                                                   = [tex]\frac{1}{2}x^{9}[/tex]  

Area of the given right triangle is [tex]\frac{1}{2}x^{9}[/tex] units².

Answer:

0

Step-by-step explanation:

The teacher spend some amount on buying costumes and microphones for 6 cast members.

GiveN:

Let's frame the equation. Total money is the total amount spent for 6 cast members.

Money spent on costumes = $38 × 6

Money spent on microphone = $c × 6

Equation:

[tex]6 \times 38 + 6 \times c = 354[/tex]

Taking 6 as common,

[tex]6(38 + c) = 354[/tex]

Dividing 6 from both sides,

[tex] \dfrac{6(38 + c)}{6} = \dfrac{354}{6} [/tex]

[tex]38 + c = 59[/tex]

Solving further,

[tex]38 + c - 38 = 59 - 38[/tex]

[tex]c = 21[/tex]

So, the cost of each microphone = $21

The teacher spent this much on each microphone.

#CarryOnLearning

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The teacher spent  $21 on each microphone.

Determine the known quantities and designate the unknown quantity as a variable while trying to set up or construct a linear equation to fit a real-world application.

In other words, an equation is a set of variables that are constrained through a situation or case.

The total amount of teachers have = $354

Cost of costume for all 6 members ;

6 × 38 = $228

Cost of microphone for all 6 members ;

6 × c = 6c

Now,

Cost of microphone  + Cost of costume =  total amount

6c + 228 = 354

6c = 126

c = 21

Hence "The teacher spent  $21 on each microphone".

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Answer:

Minti - 12 days

Minti & Rinki - 8 days

Use Formula 3

time= (12 * 8) / (12 -8)

time = 96 / 4

time for Rinki alone = 24 Days

*****************************************************

Rinki alone for 4 days will leave 20 days of work to be done.

Step-by-step explanation:

Answer:

C

The answer is C and the distant from a given point to a point on the Circle is radius

Answer:

616.6 square cm

Step-by-step explanation:

Area of a regular octagon

[tex] = 2 {a}^{2} (1 + \sqrt{2} ) \\ = 2 \times {12}^{2} (1 + 1.414) \\ = 2 \times 144 \times 2.141 \\ = 288 \times 2.141 \\ = 616.608 \\ = 616.6 \: {cm}^{2} [/tex]

Step-by-step explanation:

Hey there!!

Here,

[tex]5(1 - b) = 8(b + 2)[/tex]

[tex] \: \: \: \: \: 5 - 5b = 8b + 16[/tex]

[tex] \: \: \: \: \: \: \: 8b + 5b = 5 - 16[/tex]

[tex] \: \: \: \: \: \: \: 13b = - 11[/tex]

[tex] \: \: \: \: \: \: \: b = \frac{ - 11}{13} [/tex]

Therefore the value of b is -11/13.

Hope it helps...

Step-by-step explanation:

first open up the brackets according to BODMAS to get

5-5b=8b+16

then collect like terms together and make sure to change the sighns eg - becomes +

5-16=8b+5b

you get

-11=13b

then divide both sides with 13 to get b

-11/13=b ( you can leave as a negative decimal according to the question)

His function is linear because it graphs out a straight line. If you were to pick any two points on that line, and find the slope, you should find that the slope is the same no matter which two points you picked.

Answer:

linear

Step-by-step explanation:

there's a constant rate of change/constant slope and the function is a straight line