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3 years ago

Will give brainliest! Pls help!

Mathematics

2 answers:

olga2289 [7]3 years ago

6 0

A straight line equals 180 degrees, so the 3 angles in the picture need to equal 180.

X + 90 + 25 = 180

x +115 = 180

Subtract 115 from both sides:

x = 65

ANTONII [103]3 years ago

5 0

Answer:

○ C. $\displaystyle 65°$

Step-by-step explanation:

Complementary Angles sum up to 90°, so you simply do this:

90° = 25° + x

- 25° - 25°

___________

$\displaystyle 65° = x$

I am joyous to assist you anytime.

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3 years ago

Read 2 more answers

Which functions are symmetric with respect to the y axis

Inessa05 [86]

Answer:

A, B, and D

Step-by-step explanation:

Only the functions that have x by itself between the absolute value signs (A, B, and D) are symmetric with respect to the y-axis .

Placing a constant outside the absolute value signs moves the function up or down the y-axis but retains the symmetry.

Adding a constant inside the absolute value signs (as in C and E) moves the axis of symmetry to the left or right of the y-axis.

In the diagram, both A and B are symmetric with respect to the y-axis, but C has been shifted three units to the left.

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3 years ago

Emmanuel carves a cone-shaped hollow out of a solid clay cylinder. What is the approximate volume of the solid portion of the cy

bixtya [17]

Answer:

$3.14r^2(h-\frac{1}{3}h_1)$

Step-by-step explanation:

Let h be the cylinders height and r the radius.

-The volume of a cylinder is calculated as:

$V=\pi r^2h$

-Since the cone is within the cylinder, it has the same radius as the cylinder.

-Let $h_1$ be the height of the cone.

-The area of a cone is calculated as;

$V=\pi r^2 \frac{h}{3}\\\\=\frac{1}{3}\pi r^2h_1$

The volume of the solid section of the cylinder is calculated by subtracting the cone's volume from the cylinders:

$V=V_{cy}-V_{co}\\\\=\pi r^2h-\frac{1}{3}\pi r^2 h_1, \pi=3.14\\\\=3.14r^2(h-\frac{1}{3}h_1)$

Hence, the approximate area of the solid portion is $3.14r^2(h-\frac{1}{3}h_1)$

5 0

3 years ago

a cartographer used a scale of 1 inch :300 meters for the heights of different mountains if the actual height of one of those mo

zaharov [31]

Answer:

$12\frac{1}{3}$ inches

Step-by-step explanation:

So to go from 300 to 3700 you have to multiply by $12\frac{1}{3}$

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3 years ago

Geometry, any idea?

Pepsi [2]

Answer:

Step-by-step explanation:

15x-31+9×+11+×=180

25×-20=180

25×=200

×=8

15(8)-31=89

9(8)+11=83

5 0

3 years ago