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3 years ago

Please help I need to turn this in please help me

Mathematics

2 answers:

snow_tiger [21]3 years ago

4 0

Step-by-step explanation:

15/5 = 3, 21/7 = 3 -- scale factor is 1/3 since he must divide by 3 to get the side lengths for the photo card

Area = width*length, and scale factor is 5. Therefore, the new width is (15*5) and the new length is (21*5), so the new area is 15*5*21*5 = 15*21*5² = 15*21*25 = 315*25 = 7875 in²

Mrac [35]3 years ago

4 0

Answer:

what is the question

Step-by-step explanation:

my this help you to solve thequestion

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Please help!!!! I don’t understand how to figure it out

lubasha [3.4K]

Answer:

(sin x)^2*(sec x) is positive in QII

Step-by-step explanation:

(sin x)^2 is always 0 or positive. Here x lies in QII.

sec x is positive when the adjacent side is positive and negative when the adjacent side is negative. In QII the adjacent side is positive.

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2 years ago

If the discriminat of a quadratic equation is 4 which statement describes the roots

Alex Ar [27]

Answer: using the discriminant to find the number of solutions to a quadratic equation b^2-4ac. positive discriminant indicates that the quadratic has two distinct real number solutions. The roots of a function are the x-intercepts. By definition, the y-coordinate of points lying on the x-axis is zero. Therefore, to find the roots of a quadratic function, we set f (x) = 0, and solve the equation, ax2 + bx + c = 0.

Step-by-step explanation:

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2 years ago

Solve for x. A) 6 B) 4 C) 5 D) 7

inn [45]

Answer:

Step-by-step explanation:

Aight, let's hop to it:

So we got

$\frac{5x}{45} = \frac{20}{36} = = > \\ \frac{x}{9} = \frac{5}{9} = = > \\ x = 5$

and boom

6 0

2 years ago

Ken paid $12 for two magazines. The cost of each magazine was multiple of $3. What are the possible prices of the magazines?

icang [17]

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7 0

3 years ago

Read 2 more answers

Drake needs to drill holes in a wooden plank. The holes will have a diameter of 0.5 millimeters, with an error allowance of 0.05

Tanzania [10]

Answer:

|x − 0.5| = 0.05

Step-by-step explanation:

Here x represents the diameter,

Since, an error of 0.05 millimeters is allowance in diameter,

Thus, the maximum acceptable diameter = x + 0.05,

And, the minimum acceptable diameter = x - 0.05

According to the question,

The holes will have a diameter of 0.5 millimeters,

Thus, x - 0.05 < 0.5 and 0.5 < x + 0.05

⇒ x - 0.5 < 0.05 and x - 0.5 > - 0.05

⇒ x - 0.5 < 0.05 and -(x -0.5) < 0.05

⇒ |x-0.5| < 0.05

⇒ Option D is correct.

6 0

2 years ago