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2 years ago

Can someone please answer my question before this one go to my profile to view

Mathematics

1 answer:

Elenna [48]2 years ago

7 0

Answer: Okay, what's the question?

Step-by-step explanation:

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Factor 20x2 + 25x – 12x – 15 by grouping. 1. Group terms with common factors. 2. Factor the GCF from each group. 3. Write the po

RUDIKE [14]

Step 1:

 (((22•5x2) + 25x) - 12x) - 15)))


The first term is, 20x2 its coefficient is 20 .
The middle term is, +13x its coefficient is 13 .
The last term, "the constant", is -15


step 2 above, -12 and 25
 20x2 - 12x + 25x - 15

Step-4 : Add up the first 2 terms, pulling out like factors :
 4x • (5x-3)
 Add up the last 2 terms, pulling out common factors :
 5 • (5x-3)
Step-5 : Add up the four terms of step 4 :
 (4x+5) • (5x-3)
 Which is the desired factorizationFinal result : (5x - 3) • (4x + 5)

5 0

3 years ago

Read 2 more answers

Two sides of a triangle measure 9 cm and 23 cm Which could be the measure of the

Irina-Kira [14]

Is this multiple choice?

8 0

3 years ago

(-12)^9 negative or positive

g100num [7]

(-12)^9 is a negative because a negative times a positive is negative. The answer to (-12)^9 is -5159780352.
Hope you learned something :)

3 0

3 years ago

Look at the image below plz correct answers Surface area of cones 15 points

monitta

Answer:

$A\approx 282.7\ m^2$

Step-by-step explanation:

1. Approach

The easiest method to solve this problem is to use the Pythagorean theorem to find the height of the cone. Then one can substitute the values given and found on the cone into the formula to find the surface area in order to solve for the surface area of the given cone.

2. Height of the cone

Imagine drawing a line from the tip of the cone down to the center of the base. This line will form a right angle with the base, thus, a right triangle is formed between the line, the radius (the distance from the center to the circumference or outer edge on a circle) of the base, and the incline of the cone. The Pythagorean theorem is a formula that relates the sides of a right triangle. This formula is as follows:

$a^2+b^2=c^2$

Where (a) and (b) are the legs or the sides adjacent to the right angle of the right triangle, and (c) is the hypotenuse or the side opposite the right angle of the right triangle. Substitute the given values into the formula and solve for the unknown, or rather the height of the cone:

$a^2+b^2=c^2$

$a^2+5^2=13^2$

Simplify,

$a^2+5^2=13^2$

$a^2+25=169$

Inverse operations,

$a^2+25=169$

$a^2=144$

$a=12$

$h=12$

3. Find the surface area of the cone.

The following formula can be used to find the surface area of a cone:

$A=\pi r(r+\sqrt{h^2+r^2})$

Where ( $\pi$ ) represents the numerical value (3.1415...), (r) represents the radius of the base, and (h) represents the height of the cone. Substitute the given values into the formula and solve for the surface area: