someone pls help (pls don’t guess just to get the points) ( best accurate response gets brailiest)

Answer:

x =−3.28642165

Step-by-step explanation:

Answer:

Step-by-step explanation:

For reference the quadratic equations looks like this

(-b±[tex]\sqrt{b^2-(4*a*c)}\\[/tex])/2a

Amy's mistake (and solution)

We can see that when amy mulitplied c she wrote 20 instead of -20 (in step 1). She can fix this by writing (4*1*-20) instead

Richard's mistake (and solution)

When richard messed up on step 5 when he wrote (6-2i)/2. You only would write the i if the negative was in the radical (but in this case it's outside). You would fix this by just getting rid of the i entirely (and keeping the 2)

I'm not really too sure how you would do three but I'll give it a shot anyways

our equation will look like this: x²+2x

which means our quadratic equation would look like this

[tex]\frac{-2+/-\sqrt{2^2-4*1*0}}{2}\\=\\\\\frac{-2+/-(2)}{2}\\\\\\= -1+/-(1)\\\\-1+1=0\\-1-1=-2[/tex]

When I write +/- I mean plus or minus giving us -2 and 0 as our solutions

Answer:

qjavaivsjsjajjsnssjskksjskskmamaansxbxk

Answer: y=210000(1+0.02)^5

y=231856.97

Step-by-step explanation:

210000 is the total cost and it increases by two percent and its asking how much it will be in 5 years so when you plug in the equation you should get y=231856.97.

Hope this helped

Answer:

y=7×-9 I going to be your answer

Answer:

for number 1 y = 21 for number 2 y = 39 for the 3rd 1 its y = 54 and the final 1 is y = 63

Step-by-step explanation:

plz if I'm right plz mark me brainlist because this took a long time

Answer:

no never. it won't be zero.

Answer:

the anwser is B

Step-by-step explanation:

Answer:

22) 3 in<x<11 in

23) 8 cm<x<26 cm

24) 0 ft<x<10 ft

25) 9 m<x<31 m

26) 2 km<x<14 km

27) 13 in<x<61 in

Step-by-step explanation:

It has to be greater than the difference and smaller than the sum.

22) 7-4=3, 4+7=11, so the answer is 3<x<11

23) 8<x<26

24) 0<x<10

25) 9<x<31

26) 2<x<14

27) 13<x<61

answer is c=26

hope that helped loll

Answer:

by using angle sum property

Angles a+b+c = 180 degree.

thus, 42+86+c= 180

128+c=180

c=180-128

c=52

answer is z=17

hope that helped loll

Answer:

17

Step-by-step explanation:

30+31=61

180-61=119

119/7=17

Answer:

230 g

Step-by-step explanation:

4.3 x molar mass of NH4Cl

Molar Mass of NH4Cl = 14.0067 + 4x1.0079 + 35.453 = 53.491

4.3 x 53.491 = 230 g

Answer: Anwse is 36 and 23

Step-by-step explanation:

Answer:

-2

Step-by-step explanation:

Answer:

-2

Step-by-step explanation:

Answer:

Step-by-step explanation:

principal amount by women for savings = $ 580

duration = 1 year and rate of interest on it = 6 .1/2 % = 13/200

now amount of interest she'll be earning = $580 x 1 x 13 /200 = $37.7

thats  37 dollar 70 cents

Answer:

(4w^2+180w+1800) meters^2

Explanation:

(60+2w) x (30+2w)

1800+120w+4w^2+60w

Combine like terms and rearrange into quadratic equation

4w^2+180w+1800

Don't forget to put your units and since we are talking about area be sure to add your squared symbol

Answer:

0.64

Step-by-step explanation:

Bananas:0.49:1

?:1.31

1x1.31 is 1.31 so

0.49x1.31=0.64

Answer:

70% of the people at the fair are students

165 people are on the ride

Step-by-step explanation:

In order to find a percentage, take the fraction given, 385/550, and divide the numerator, 385, and divide it by the denominator, 550. Once completing this, we get 0.7

Next, we multiply the result by 100, and get 70, thus, 385 is 70% of 550.

To find how many people 30% of 550 is, we take the percentage and put it in a fraction with the denominator being 100(changes with size of fraction like a decimal, 300 would be over a denominator of 1000)

With 30/100, we then multiply by 550 with the equation looking like this:

30/100*550/1

Once we finish multiplying(typically using a calculator, although you can do it manually) we get 165, the value of how many people are on rides out of the total 550.

Answer:

its 444

Step-by-step explanation:

Answer:

110 degrees

Step-by-step explanation:

the angles stay the same even if the size changes!

Answer:

110 because if you add up the angles and subtract the rest then you get it

Answer:

The last one is incorrect

Step-by-step explanation:

Answer:

45

Step-by-step explanation:

25 ÷ 45 = 0.555 x 81 = 45

Answer:

A 45-foot tree will cast a 81-foot shadow.

Step-by-step explanation:

Set up a proportion.

I'll set mine up like this:

[tex]\frac{Height of Tree}{Shadow}=\frac{Height of Tree}{Shadow}[/tex]

Insert the values given then solve for the unknown (t).

[tex]\frac{25}{45}=\frac{t}{81}[/tex]

[tex](81)\frac{25}{45}=\frac{t}{81}(81)[/tex]

[tex]45=t[/tex]

Answer:

Step-by-step explanation:

The function is g(t) = -16t² + vt + h

At h = 0 and v = 80 we get the function:

We know g(t) can't be negative, then:

Correct option is B

Answer:

adassdasdsa c c c c cc c c c c c c c cc c c c

Step-by-step explanation:

Answer:

19 my person of unidentified gender (random text to make this longer)

if you have to get the answer for 4 multiplied by a number to make it 76 you know you could get the same number by dividing 76 / 4

the answer you can try is 4(x+19)=76

Answer:

34

Step-by-step explanation:

The dog weighs 34 pounds

34-24=10

24+10=34

Answer:

x= 2 or x= -3

Step-by-step explanation:

Bring the equations together using a common denominator (x-5) (x+7)

x-29/(x-5) (x+7)= 1

Multiply both sides by (x-5) (x+7)

x- 29= (x-5) (x+7)

x- 29= (x-5) (x+7)= x^2 + 2x - 35

-x^2 - x + 6 = 0

-(x-2)(x+3)= 0

Multiply both sides by -1

(x-2)(x+3)= 0

Split it into two equations

x-2= 0 or x+3= 0

x= 2 or x= -3