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2 years ago

Solve the system of Equations below using the substitution method

Mathematics

1 answer:

Veseljchak [2.6K]2 years ago

8 0

Answer:

Step-by-step explanation:

Gffggfhhgghggjjbgg

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2 years ago

Twelve large bottles of water cost nine dollars how many bottles can u buy for 3 dollars

DerKrebs [107]

Answer:

answer is 4

Step-by-step explanation:

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Anderson is a plumber and is paid a fixed amount just to make a house visit. The remainder of his fee, y, is determined by the n

Serhud [2]

Answer:

y=10x+50

Explanation:

The line starts at point (0,50) which is the y intercept (how much he gets paid to visit house).The line crosses points (10,150) and (20,250) and the slope of these points are 100/10 which when simplified equals 10x which is how much money he gets paid by the hour(x=hours) so y=10x plus the y intercept y=10x+50

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2 years ago

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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:

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

$A=\pi 5(5+\sqrt{12^2+5^2})$

Simplify,

$A=\pi 5(5+\sqrt{12^2+5^2})$

$A=\pi 5(5+\sqrt{144+25})$

$A=\pi 5(5+\sqrt{169})$

$A=\pi 5(5+13)$

$A=\pi 5(18)$

$A=\pi 90$

$A\approx 282.743$

3 0

2 years ago

Name the L corresponding angle with angle 2.

olchik [2.2K]

Answer:

D angle 6

Step-by-step explanation:

Corresponding angles are in the same place if the line were on top of each other. For example, ang1e 1 and angle 5, are corresponding; angle 3 and angle 7 are corresponding.

6 0

2 years ago