Please help me figure this out. No links

Please Help Me Figure This Out. No Links

Answers

Answer 1

Answer

x=1 +[tex]\sqrt{2} ,x=1 - \sqrt{2}[/tex]

Step-by-step explanation:

x.1,2=[tex]\frac{-(-2)+ \sqrt{(-2)^2-4.1(-1)} }{2.1}[/tex]

apply rule -(-a)=a

[tex]\sqrt{(-2)^2+4.1.1}[/tex]

[tex]x1,2=\frac{-(-2)+2\sqrt{2} }{2.1}[/tex]

x=1 +[tex]\sqrt{2} ,x=1 - \sqrt{2}[/tex]


Related Questions

Carrie walked 6 miles per day. Which table represents y, the number of miles Carrie walked in x days.

D. Says 1. 18
2. 36
3. 54
4. 72

Answers

Answer:

C

Step-by-step explanation:

Since Carrie walked 6 miles her day, the function that best suits this relationship is given by [tex]y=6x[/tex] where [tex]x[/tex] is the number of days she walked and [tex]y[/tex] is the number of miles.

Table C represents this function [tex]y=6x[/tex] because all y values are exactly 6 times the x value.

Answer:

The answer is C.

Step-by-step explanation:

18 ÷ 3 = 6 miles a day

36÷6 = 6 miles a day

54÷9 = 6 miles a day

72÷12 = 6 miles a day

Can someone help me

Answers

It’s Rational numbers

What is the 5 steps in Method of Elimination Steps to Solve Simultaneous Equations..

Answers

Answer:

you first use the coefficients of the letters to times each equation.

Then you either subtract or divide to eliminate the first letter and it coeeffient.

then whatever you get you will divide it with the one with no letter.

then you substitute the answer for the letter in any of the equation.

then you solve it.

I hope this is helpful.

Hank can see the top of a tree in a mirror that is placed 475 cm from the tree when he stands 190 cm from the mirror. What is the height of the tree?

Answers

Answer:

The height of the tree is 430cm

Step-by-step explanation:

Given

The attached illustration

Required

The height of the tree

Let:

[tex]h \to[/tex]  Hank's height

[tex]H \to[/tex] Tree height

[tex]d \to[/tex] distance between Hank and Mirror

[tex]D \to[/tex] distance between tree and Mirror

From the question, we have:

[tex]\angle 1 = \angle 2[/tex]

This means that:

[tex]\frac{H}{D} = \frac{h}{d}[/tex]

Make H the subject

[tex]H = \frac{h}{d} * D[/tex]

So, we have:

[tex]H = \frac{172cm}{190cm} * 475cm[/tex]

[tex]H = \frac{172* 475cm}{190}[/tex]

[tex]H = \frac{81700cm}{190}[/tex]

[tex]H = 430 cm[/tex]

5.) $28,000 invested at a rate of 4% compounded annually
a.) Write a compound interest function to model the situation.

Answers

Answer:

ok so we know the amount we know the interest amount but we do know know the period of time so the equation would look like this

28000(0.4)T=I

T=Time

I=interest

Can someone please help me with this math problem? thank you so much!

Answers

9514 1404 393

Answer:

  (A)  6

Step-by-step explanation:

Divisors of 6 are ...

 1, 2, 3, 6

The sum of all but the last is 1+2+3 = 6.

Then  <<<6>>> = <<6>> = <6> = 6.

_____

Additional comment

Among integers less than 200, only 6 and 28 are solutions to <n> = n.

Put the following equation of a line into slope-intercept form, simplifying all
fractions.
9x + 3y = -6

Answers

Answer:

y = -3x-2

Step-by-step explanation:

3y = -9x-6. y = (-9x-6)/3. y = (-9x/3)+(-6/3). y = -3x-2

What is the area of this tile?
HELPP PLEASEEE

Answers

12? im not sure

i think u need to multiply 6 and 2 to get your answer.

¿ que pasa si no hubieran plantas ?

Answers

Answer:

entonces no habria oxigeno

Step-by-step explanation:

 

please answer both questions​

Answers

Answer:

$24.63

Step-by-step explanation:

Surface area of a sphere = 4πr²

Surface area of the sphere

= 4π7²

= 196π

= 615.752... cm²

The total cost

= 0.04 × 615.752...

= $24.63 (rounded to the nearest hundredth)

A scientist is studying the growth of a particular species of plant. He writes the following equation to show the height of the plant f(n), in cm, after n days:

f(n) = 12(1.03)n

What is the average rate of change of the function f(n) from n = 3 to n = 10, and what does it represent? (4 points)

Answers

Answer:

The average of rate was of 0.4314 cm/day, which means that on average, during this interval, the plant grew by 0.4314 cm each day.

Step-by-step explanation:

Average rate of change:

The average rate of change of a function f(x), from x = a to x = b, is given by:

[tex]A = \frac{f(b)-f(a)}{b-a}[/tex]

In this question:

[tex]f(x) = 12(1.03)^n[/tex]

From n = 3 to n = 10

[tex]a = 3, b = 10[/tex]

[tex]f(b) = f(10) = 12(1.03)^{10} = 16.13[/tex]

[tex]f(a) = f(3) = 12(1.03)^{3} = 13.11[/tex]

Average rate of change:

[tex]A = \frac{f(b)-f(a)}{b-a} = \frac{16.13-13.11}{10-3} = 0.4314[/tex]

The average of rate was of 0.4314 cm/day, which means that on average, during this interval, the plant grew by 0.4314 cm each day.

HELP PLS!!

A circle has been divided into 4 equal angles. is each angle acute, obtuse or right?

Answers

Answer:

Right

Step-by-step explanation:

360/4 = 90

90° is a right angle

i need help with this one plz! (marking BRAINLIST) :) ​

Answers

Answer:

x=22

Step-by-step explanation:

the triangle in which x is in is an equilateral triangle.

44 is an exterior angle to that triangle.

an exterior angle is always equal to tbe sum of the opposite 2 interior angles.

because that triangle is equilateral

x =44 ÷ 2

x=22

The serum cholesterol levels (in mg/dL) of 18 individuals are

220, 203, 211, 191, 257, 259, 242, 218, 186, 298, 228, 201, 206, 240, 189, 198, 247, 222

Find the 25th and 90th percentile s for these cholesterol levels.​

Answers

Answer:

228 and 222

Step-by-step explanation:

find the value of x . PLEASE ANSWER QUICK ILL MARK BRAINLIEST

Answers

Answer:

x = 20

Step-by-step explanation:

90° - 76° = 14°

[tex](x-6)=14[/tex]

[tex](x+6)=+6[/tex]         Add 6 to both sides

   x      =   20

Hence, x = 20

Answer: X=20

Right angles are 90 degrees and 90-76=14... X-6=14... add 6 to 14 and get 20. X=20. Don't quote me on it I haven't done this stuff in a year.

Find the area of the triangle to the nearest tenth . Pleaseeee help

Answers

Answer:

15.8 cm²

Step-by-step explanation:

Please see attached photo for diagram.

We'll begin by calculating the angle A. This can be obtained as follow:

B = 56°

C = 78°

A =?

A + B + C = 180 (Sum of the angle in triangle)

A + 56 + 78 = 180

A + 134 = 180

Collect like terms

A = 180 – 134

A = 46°

Next, we shall determine the value of b by using the sine rule. This can be obtained:

Side opposite angle C (c) = 7.2 cm

Angle C = 78°

Angle B = 56°

Side opposite angle B (b) =?

b/Sine B = c/sine C

b/Sine 56 = 7.2/Sine 78

Cross multiply

b × Sine 78 = 7.2 × Sine 56

Divide both side by Sine 78

b = 7.2 × Sine 56 / Sine 78

b = 6.1 cm

Finally, we shall determine the area of the triangle. This can be obtained as follow:

Side opposite angle C (c) = 7.2 cm

Side opposite angle B (b) = 6.1 cm

Angle A = 46°

Area (A) =?

A = ½bcSineA

A = ½ × 6.1 × 7.2 × Sine 46

A = 15.8 cm²

Therefore, the area of the triangle is 15.8 cm²

A survey result shows that cell phone usage among teenagers rose from 63% in 2006 to 71% in 2008.
Of the following choices, which statement about cell phone use among teenagers is true?
a. Cell phone usage rose by 11.2 percentage points.
b. Cell phone usage rose by 12.7 percentage points.
c. Cell phone usage rose by 12.7%.
d. Cell phone usage rose by 8%.

Answers

Answer:

d. Cell phone usage rose by 8%.

Explanation:

71 - 63 = 8

The statement that is true about percentage increase in cell phone use among teenagers is; c. Cell phone usage rose by 12.7%.

How to calculate percentage increase?

We are given;

Percentage of teenagers using cell phone in 2006 = 63%

Percentage of teenagers using cell phone in 2008 = 71%

Thus;

Percentage increase = (71% - 63%)/63%

Percentage increase = 12.7%

Read more about Percentage Increase at; https://brainly.com/question/11360390

#SPJ6

how many solution does this equation have 17+4h+2=19−5h+9h?

Answers

Answer:

h=0

Step-by-step explanation:

if you plug it it works

Answer:

The input is an identity, it is true for all values.

Step-by-step explanation:

17 + 4h + 2 = 19 - 5h + 9h

19 + 4h = 19 - 5h + 9h

19 + 4h = 19 + 4h

19 - 19 + 4h = 19 - 19 + 4h

4h = 4h

4h ÷ 4 = 4h ÷ 4

h = h

The input is an identity, it is true for all values.

A tortoise and hare are competing in a 1000 meter race. The function f and g are such that f(t) represents the tortoise's distance from the finish line (in meters) t seconds after the start of the race and g(t) represents the hare's distance from the finish line (in meters) t seconds after the start of the race. If we want to compute the number of seconds needed for the hare to finish the race, which procedures should be used?

Answers

Answer:

[tex]g(t) = 0[/tex]

Step-by-step explanation:

Given

[tex]d = 1000m[/tex]

[tex]f(t) \to[/tex] Tortoise

[tex]g(t) \to[/tex] Hare

Required

Time needed by the Hare to complete the race

The function [tex]g(t)[/tex] implies that the Hare is t seconds from completing the race.

When g(t) = 0, it means that the Hare has completed the race

So, to calculate the time needed by the Hare;

We simply equate g(t) to 0, then solve for t

the question is in the attachment. i know its not A because these angles are not opposite of each other.

Answers

Answer:

hi, it's b because a+b is 180°

Find the missing length indicated. Please help!!!

Answers

C
because if you look at where the unmarked side is divided, the one you’re supposed to find is obviously bigger than the other.

2x + 3y = 7 and x + y = 3? *

Answers

Answer:

1) 7/2 - 3/2y,

2) 3-y, y

Step-by-step explanation:

See Image below for steps:)

3
3
X
14. Aşağıdaki cümlelerin hangisinde ikilemenin
oluşum yolu diğerlerinden farklıdır?
L
A) Çamurda bata çıka ilerlemeye çalıştık.
er-
B) Denizde irili ufaklı taşlar vardı.
C) Maaşımla iyi kötü geçinip gidiyoruz.
D) Eski püskü eşyaları kenara ayırdı.
es
?

Answers

Answer:

hygu

Step-by-step explanation:

yg9k

Use the order of operations to simplify the expression
(5.4)² - 5.4²

Answers

Answer is 0 for the question

Answer:

0

Step-by-step explanation:

(5.4)^2 - 5.4^2

= 5.4^2 - 5.4^2

= 5,4^2(1 - 1)

= 5.4^2(0)

= 0

which of the following graph is neither even or odd

Answers

Answer:

f(x)=2x³+4x²+5

Step-by-step explanation:

1) the rule of the even function is: f(-x)=f(x)

the rule of the odd function is: f(-x)=-f(x);

2) the function f(x)=2x³+4x²+5 is neither even or odd according to the rules above:

f(-x)= -2x³+4x²+5= -(2x³-4x²-5).

How to solve a problem.

Answers

a) [tex]\log \left(\dfrac{A^3B}{C} \right) = 3\log A + \log B - \log C[/tex]

b) [tex]\log \left(\dfrac{\sqrt{A}}{B^2} \right) = \frac{1}{2}\log A - 2\log B[/tex]

Ethan is 1.6 metres tall, Uzma is 154 cm tall.
Work out how much taller Ethan is than Uzma.

Answers

Answer:

1.6 metres is 160 centimetres

Ethan is 6 centimetres taller than Uzma

PLEASE PLEASE HELP!!!!

Find the volume of the triangular pyramid to the nearest whole number

A) 170in³
B) 340in³
C) 680in³
D) 1,020³

Answers

V=(l x w x h) / 3 ———> (10 x 12 x 17) / 3 ———> 2040/3 = 680 in^3, it’s C

5. Solve: 9(36 – 2) - 2 =
I can’t figure this out

Answers

Answer:

The correct answer is:304

Step-by-step explanation:

Please help me i need help

Answers

Answer:

H

E

A

R

T

S

Step-by-step explanation:

easy

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