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KatRina [158]
3 years ago
13

Solve the quadratic equation by completing the square. x^2−4x-10=0 First, choose the appropriate form and fill in the blanks wit

h the correct numbers. Then, solve the equation. If there is more than one solution, separate them with commas.
Form:________________

Solution: x=
Mathematics
2 answers:
frozen [14]3 years ago
5 0
The answers are (4+(56^1/2))/2 and (4-(56^1/2))/2
Gelneren [198K]3 years ago
5 0
X^2 - 4x - 10 = 0
x^2 - 4x = 10
x^2 - 4x + 4 = 10 + 4
(x - 2)^2 = 14
x - 2 = (+-) sqrt 14
x = 2 (+-) sqrt 14

x = 2 + sqrt 14 and x = 2 - sqrt 14 <== ur solutions

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A) (-63) ÷ (-9)<br>b) (+72) ÷ (-8)<br><br>​
Juliette [100K]

Answer:

A. +7

B. - 9

Hope this help you

3 0
3 years ago
N kmjknxcizfdhzkjxfsbvdnkjbchsgnfdb,mfvs cfnbgsuhkjfcbm
kifflom [539]

Answer:

huh thanks for the points ig :)

Step-by-step explanation:

8 0
3 years ago
at a conference for 500 people, 20% of the participants are french, 50% are americans, 5% are germans, and are of other national
avanturin [10]
The number of French participants is 20\%\cdot 500 = \frac{20}{100} \cdot 500 = 100.
4 0
4 years ago
Read 2 more answers
54 and 67 use numbers and operations to write each phrase as an expression
arsen [322]

The phrases you would like to be written as expressions are not listed. I would nevertheless, explain how to write phrases as expressions so that the same approach could be applied to you own question.

Phrases are dynamic, depending on the problem. They do not necessarily take a particular form.

The constant thing about phrases is the operators connecting the words in the phrases. Theses operators are:

Addition (+), Subtraction (-), Division (÷), and Multiplication (×).

In word problems, it is a matter of interpretation, these operators can be written in many ways.

ADDITION

plus

the sum of

increase

grow

add

profit

And so on.

SUBTRACTION

minus

loss

decrease

reduce

subtract

And so on

MULTIPLICATION

times

multiply

triple

And so on

DIVISION

split

share

divide

distribute

And so on.

Examples

(1) 56 is added to a number to give 100

Interpretation: x + 56 = 100

(2)The difference between Mr. A and Mr. B is 5

Interpretation: A - B = 5

(3) This load (L1) is three times heavier than that one (L2)

Interpretation: L1 = 3L2

(4) Share this orange (P) equally between the three children

Interpretation: P/3

7 0
3 years ago
How many triangles are there that satisfy the conditions a =13, b =9, A = 62°?
8_murik_8 [283]

Answer:

Step-by-step explanation:

Alright, lets get started.

Using sin Law,

\frac{sinA}{a}=\frac{sinB}{b}

Plugging the value of a, b and angle A

\frac{sin62}{13}=\frac{sinB}{9}

sinB=\frac{9*sin62}{13}

sinB=\frac{9*0.8829}{13}

sinB=0.61127

taking sin inverse on both sides

B=sin^{-1}(0.61127) =37.68

The may be another value of B that will called B' = 180-37.68=142.32

We will not consider this B' value because the um of angle B' and A will exceeds 180 degree (142.32+62=204.32)

Thats why only one triangle is possible.   :   Answer

Hope it will help :)

5 0
3 years ago
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