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3 years ago

QUICK QUICK PLEASE! 1 MINUTE ONLY! WITH EXPLANATION PLEASE!

Mathematics

1 answer:

Dmitriy789 [7]3 years ago

5 0

Answer:

Step-by-step explanation:

<h2>first you add 60 plus 40 equals 100 then add 80 plus 50 equals 130.add 130 + 100 =230 then add 90 which is 320 next add 9 the you get 329</h2>

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Solve x2 + 2x = 4 for x by completing the square. x equals plus or minus square root of 5 plus 1 x equals plus or minus square r

steposvetlana [31]

Answer:

x equals plus or minus square root of 5 minus 1

Step-by-step explanation:

we have

$x^{2} +2x=4$

Divide by 2 the coefficient of the x-term

$2/2=1$

squared the number

$1^2=1$

Adds both sides

$x^{2} +2x+1=4+1$

$x^{2} +2x+1=5$

Rewrite as perfect squares

$(x+1)^{2}=5$

take the square root both sides

$x+1=(+/-)\sqrt{5}$

$x=(+/-)\sqrt{5}-1$

therefore

x equals plus or minus square root of 5 minus 1

4 0

3 years ago

25<br> II<br> 7<br> Yeah I need help

uysha [10]

Sorry i don’t understand the question can you reply to this and comment

4 0

3 years ago

Read 2 more answers

NEED HELP ASAP!! WILL MARK BRAINLIEST!!

Nookie1986 [14]

Step-by-step explanation:

The Chord Intersection Theorem:

If 2 chords of a circle are AB and CD and they intersect at E, then

AE * EB = CE * ED.

Problem.

Two Chords AB and CD intersect at E. If AE = 2cm , EB = 4 and CE = 2.5 cm, find the length of ED.

By the above theorem : 2 * 4 = 2.5 * ED

ED = (2 * 4) / 2.5

= 3.2 cm.

is this what u wanted??????????

6 0

3 years ago

The graph shows a car's value as a function of its age.

IRISSAK [1]

The price it 2 years would be 10k cash

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3 years ago

Caroline, Colin & Sarah share some money.

Mumz [18]

Answer:

Colin and Sarah get 1 - 1/9 = 8/9 of the money

A ratio of 3 :1 means that there are 4 parts of the 8/9....so....each part = 8/9 * 1/4 = 8/36 = 2/9

And Colin gets 3 parts of the 8/9 = 3 * 2/9 = 6/9 = 2/3 of the money

Step-by-step explanation:

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3 years ago