Help I don’t understand the first part but understand the second

Help I Dont Understand The First Part But Understand The Second

Answers

Answer 1

Answer:

Step-by-step explanation:

Complete the square

[tex]x^{2}[/tex] + 2x - 13 = 0

[tex]x^{2}[/tex] + 2x        = 13

[tex]x^{2}[/tex] + 2x + [tex]1^{2}[/tex] = 13 +1 (take 1/2 of the b term , the 2 )

[tex]x^{2}[/tex] + 2x + 1 = 14

(x +1)^2 = 14

Answer 2

Answer:

Complete the square:

x² + 2x - 13 = 0x² + 2x + 1  - 14 = 0(x + 1)² - 14 = 0(x + 1)² = 14x + 1 = ± √14x = -1 ± 3.74x =  2.74, x = -4.74

Related Questions

Please explain how to convert from mixed surds to entire surds.

Answers

by process:

√×=n√an×x

hope itz helpful

trigonometry. please help​

Answers

Answer:

C) 3/5

Step-by-step explanation:

Have you heard of this way to memorize the trig ratios?

SOH-CAH-TOA  (Say it out loud so you remember it.)

It represents these ratios:

Sine = opposite side / hypotenuse

Cosine = adjacent side / hypotenuse

Tangent = opposite side / adjacent side

In this problem, cos C = adj / hyp = BC / AC = 24 / 40.

That simplifies to 3/5

Help ASAP no links
Find all the missing elements:
A
A
C = 120°
b = 5
c= 11
A А
b C
A = [?]° B = [ ]º a = [ ]
Round to the nearest tenth.

Answers

A= 90* i think?? !!!!

!HELP I'M GOING TO FAIL! Find the missing horizontal side. Vertical side, and area of the playground.

Answers

Answer:

Horizontal side: 7 ft

Vertical side: 12 ft

Area: 286 ft

Step-by-step explanation:

horizontal: 25 - 18 = 7

vertical: 10 + 2 = 12

area= (25x12) - (2x7) = 286

How to solve the following question attached?

Answers

Answer: AB=21.88 mm, BC=51.54 mm

Step-by-step explanation:

Given

[tex]\angle A=67^{\circ}[/tex]

[tex]AC=56\ mm[/tex]

The other two sides can find out using trigonometry

[tex]\Rightarrow \sin 67^{\circ}=\dfrac{BC}{AC}\\\\\Rightarrow \sin 67^{\circ}=\dfrac{BC}{56}\\\\\Rightarrow BC=56\sin 67^{\circ}\\\Rightarrow BC=51.54\ mm[/tex]

Similarly, for AB

[tex]\Rightarrow \cos 67^{\circ}=\dfrac{AB}{AC}\\\\\Rightarrow \cos 67^{\circ}=\dfrac{AB}{56}\\\\\Rightarrow AB=56\cos 67^{\circ}\\\Rightarrow AB=21.88\ mm[/tex]

Angle C is given by

[tex]\angle C=90^{\circ}-67^{\circ}\\\angle C=23^{\circ}[/tex]

11x8½= i need help plzz

Answers

Should I simplify? Get  the factor? Multiply? Evaluate? Can you tell me?

Please help with this questions.

Answers

Answer:

11 m= 3      12 slope is 4 and y intercept is 2

Step-by-step explanation:

11 slope = gradient of a line                            formulae        y2-y1  / x2 - x1  

12-6 / 4-2 =3                                

12 slope is the gradient so and is found as m in the equation y=mx + c

so 4 is the slope and the y intercept is where x= 0 so y = 2

Please answer correctly !!!!! Will mark Brianliest !!!!!!!!!!!!!!

Answers

Answer:

the 3rd option (36, 48, 60)

Step-by-step explanation:

i used a²+b² = c²

What is the value of the expression: 5(3 - 70) when b = 2? Show work.

Answers

Answer:

-335

Step-by-step explanation

5x3=15

5x70=350

15-350= -335

since there is no b in your question this is the answer but if there is I  might edit this

Consider the following data set:
0, 10, 12, 3, 13, 7, 2,5
Find the median.

Answers

Answer:

Sort them from lest to greast

0, 2, 3, 5, 7, 10, 12, 13

the median is 6

the lower quartile is (0, 2, 3, 5)

the upper quartile is (7,10,12,13)

Step-by-step explanation:

Anyone help pls no links!! Only help me on #8 plss

Answers

Answer:

90

Step-by-step explanation:

First you do s^2. In this case s is 3 and 3x3=9. Then multiple 9 by r. 9x2=18. Finally, multiply 18 by t. 18x5=90. The solution is 90

Step-by-step explanation:

4.5(9+d)-6

5(9+3)-65×12-654

6.3h-j

3×8-1113

8.r(s)²(t)

2(3)²(5)2×9×590

hope it helps.

1. A box has square ends. Its length is 13 cm longer than its width and the volume of the box is 60 cubic centimeters. What are the dimensions of the box?

Answers

Answer:

2 cm

Step-by-step explanation:

Given that

The length is 13 cm longer than its width

And, the volume of the box is 60cm^3

We need to find out the dimension of the box

Since the box has square ends

So,

the height is equivalent to the width

Let us assume the width be W so the height also be W

Now the length is W + 13

The volume is

W × W × (W + 13) = 60

After solving this W is 2 cm

Profit, P(x), is the difference between revenue, R(x), and cost, C(x), so P(x) = R(x) - CC). Which
expression represents P(x), if R(I) = 224 – 3x3 + 2x – 1 and C(x) = 24 – + 22 + 3?
3.14 - 31" - 22 + 4x + 2
** _ 3.7? _ 22 +42 + 2
I _ 313 + x² - 4
208_32
I NEED HELP ASAP

Answers

Answer:

Step-by-step explanation:

Profit, P(x), is the difference between revenue, R(x), and cost, C(x)

R(x) = 2x^4 - 3x^3 + 2x - 1

C(x) = x^4 -x^2 + 2x + 3

Substituting into the equation

P(x) = R(x) - C(x)

= (2x^4 - 3x^3 + 2x - 1) - (x^4 -x^2 + 2x + 3)

= x^4 - 3x^3 + x^2 - 4

The answer is the lower left option.

Answer:

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

(This is the option found in the lower-left corner)

Step-by-step explanation:

When given the following functions,

[tex]R(x)=2x^4-3x^3+2x-1[/tex]

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

The problem asks one to find ([tex]P(x)[/tex]), moreover, one is given the following information,

[tex](P(x))=(R(x))-(C(x))[/tex]

Substitute,

[tex]P(x)=(2x^4-3x^3+2x-1)-(x^4-x^2+2x+3)[/tex]

Simplify, multiply everything in the second parenthesis by the negative sign outside of it,

[tex]P(x)=2x^4-3x^3+2x-1-x^4+x^2-2x-3[/tex]

Combine like terms, only operations between coefficients of the same variable with the same degree (exponent) can be performed,

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

!!!PLEASE HELP WILL MARK BRAINLIEST!!!
The Area of a Circular plate is 625π square inches. If the Radius of the plate is tripled, what is the area of the new circle?
A) 1090π in. squared
B) 1270π in. squared
C) 6715π in. squared
D) 5625π in. squared

Answers

Answer:

5625in²

Step-by-step explanation:

Area=3.14r2

625=r²

r=25in

25x3=75

75²x3.14

I would like a little help please.

Gru has 20 minions. The minion population increases by 20 each week. El Macho has 80 evil minions. His population decreases by 10 minions each week. When will they have the same number of minions? How many minions??

x:

y:

solution:

system:


meaning of solution:

Answers

in 2 weeks and it will be 60 minions

What is the mean absolute deviation of the following data: 61, 63, 64, 68, 70, 76 ROUND TO THE NEAREST HUNDREDTH Single line text.

Answers

Answer:

4.33 infinity.

Step-by-step explanation:

The infinity should just be a line over the 3's

Answer:

4.33

Step-by-step explanation:

First, find the mean value.

Mean = 67

61 - 67 = |-6| = 6

63 - 67 = |-4| = 4

64 - 67 = |-3| = 3

68 - 67 = 1

70 - 67 = 3

76 - 67 = 9

Add: 6 + 4 + 3 + 1 + 3 + 9/6 = 4.33333333333

4.33333333333 rounded to the nearest hundredth = 4.33

Helppp I’m on a math test

Answers

option (D) 28 √6 is the answer

Explanation :

p =3√6 + 2√24 + 7√54

3√6 + 2√2×2×6+ 7√3×3×6

3√6 +2 ×2√6 + 7 ×3√6

3√6 +4√6 + 21√6

28√6

What is the value of x in the equation One-third x minus two-thirds = negative 18?

Answers

Answer:

-52

Step-by-step explanation:

Tim has 5 yellow and 10 blue marbles in a bag. What is the probability of randomly choosing a yellow marble from the bag?

Answers

There is a 1/3 chance he will choose a yellow marble

Helppp pleaseee!!!!!!!

Answers

Answer:

1234567891011121314151617181920

Step-by-step explanation:

2k – 6 = 12
whats the answer

Answers

Answer:

k=9 is the answer

Add 6 on each side then gives you 2k=18

then 2 divided by 18 is 9

ILL BRAINLIEST YOU IF YOU GET IT RIGHT PLEASE HELP

Answers

Answer:

B

Step-by-step explanation:

I am smart

Answer:

B

Step-by-step explanation:

A translation is a type of transformation that moves each point in a figure the same distance in the same direction.

A recipe requires 4 cups of flour to make 12 servings and 7 cups of flour to make 21 servings. How many cups of flour is needed to make 18 servings

Answers

Answer:

6

Step-by-step explanation:

to get cups to servings multiply by 3

if you need 18 servings then divide by 3

Find the missing term of the following arithmetic sequence.
...5,_?_,29, ...

Answers

Answer:

13, 21

Step-by-step explanation:

d = (29 - 5)/3

d = 8

5 + 8 = 13

13 - 8 = 21

Identify the slope and the y-intercept of the following equation:
y = -7x + 12
Slope:
Y-Intercept:

Answers

Answer:

Slope =-7, y intercept =12

Step-by-step explanation:

y-Mx+b where m is slope and b is y-intercept.

Slope is -7

y intercept is 12

The answer is slope 12 for sure and y intercept-7/1

This question is kinda confusing I need help

Answers

Answer:

D) p³ + 2; when p = 3 the number of plants is 29.

Step-by-step explanation:

Illiana cubed (³) the number of original plants, p, in the garden. Then, she added 2 more plants. We will use n for the number of total plants.

So, the equation should be p³ + 2. Substitute our value for p into the equation and solve.

p³ + 2 = n

3³ + 2 = n

27 + 2 = n

29 = n

There are 29 total plants.

The answer, then, is the last option, p³ + 2; when p = 3 the number of plants is 29.

Good luck ^^

Can someone help please

Answers

Answer:

sorry i dont know

Step-by-step explanation:

Answer:

Sorry for the long wait i was taking my cumulative exam for precal and it took a bit but i hope im correct. My brain is fried and dont know if i even came close.

what number is this?5·10²+3

Answers

Answer:

503

Step-by-step explanation:

10 squared is 100

so you get 5x100+3

multiply 5x100 to get 500

add 500+3 and you get 503

Answer:

5.03*10^2 in Scientific notation

503 in expanded form

2^x = 1/2

A:-1
B:-1/2
C:1

Answers

I believe the answer’s C


Help me out please???

Answers

X= 20 and y =15 I just did this as well !
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