All categories

3 years ago

How to factor x^2-49y^2

Mathematics

2 answers:

marishachu [46]3 years ago

8 0

$x^2-49y^2=x^2-(7y)^2=(x-7y)(x+7y)\\\\\\a^2-b^2=(a-b)(a+b)$

Zigmanuir [339]3 years ago

3 0

X^2-49y^2 = (x-7y)(x+7y)

You might be interested in

Please urgent fast thanks

stich3 [128]

Answer:

A) I = $171.73

B) $4771.73

Step-by-step explanation:

We are told her loan is $4600 for 7 months.

Thus;

Principal; P = 4600

Time; T = 7 months = 7/12 year

Interest rate is given as 6.4%

Thus; r = 6.4

A) To get the interest, the Formula is;

I = PRT/100

I = (4600 × 6.4 × (7/12))/100

I = $171.73

B) Since interest is $171.73, it means amount she owes after the 7 months = $4600 + $171.73 = $4771.73

6 0

3 years ago

A marketing firm for Cobra Auto Security Systems mailed out a survey to 35% of the households in New York City, Washington DC, a

san4es73 [151]

Your answer would be B.

7 0

3 years ago

Suppose a triangle has two sides of length 33 and 37 and that the angle between these two sides is 120 what is the length of the

Nutka1998 [239]

Answer:

60.65

Step-by-step explanation:

The Law of Cosines can help you figure this out. Call the given sides "a" and "b" and the given angle "C". Then the third side, "c" will satisfy the relation ...

c² = a² + b² -2ab·cos(C)

= 33² +37² -2·33·37·cos(120°) = 3679

c = √3679 ≈ 60.65476 ≈ 60.65

The length of the third side is about 60.65 units.

5 0

3 years ago

The equation a = 640s gives the relationship between s square miles and a acres. James owns 2.5 square miles of farmland. How ma

larisa [96]

This would be a question that would involve division.

We do: (1,600 ÷ 4) and therefore, this would give us $a= 640s$ just as we were looking for, and therefore, B would be your correct answer.

7 0

3 years ago

Read 2 more answers

Find the total area surface of figure

Neporo4naja [7]

Answer:

$92 \:cm^2$