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lilavasa [31]
3 years ago
10

What is the value of y? Enter your answer in the box.

Mathematics
1 answer:
Scrat [10]3 years ago
8 0

Answer:

y = 20

Step-by-step explanation:

Since AB and AC are congruent then the triangle is isosceles, thus

∠B = ∠C = 25°

To find ∠A subtract the sum of the 2 angles from 180°

∠A = 180° - (25 + 25)° = 180° - 50° = 130°, thus

3y + 70 = 130 ( subtract 70 from both sides )

3y = 60 ( divide both sides by 3 )

y = 20

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Lana71 [14]

Answer:

The Volume, Area, and Surface Area can be found with division and multiplication. Like so: (1st question, start) = 12m divided by 6m which equals 2. That is the answer for the first one.

Step-by-step explanation:

Multiplication for finding Volume, and Division for finding Area, and Surface Area.

7 0
2 years ago
Calculate the volume of the cylinder, where a = 18 and b = 11. Use 3.14 for pi and round your answer to the nearest tenth.
cupoosta [38]

Answer:

Volume of cylinder =2797.7

Step-by-step explanation:

Let a be diameter and b the height of the cylinder

Then\ radius(r)=\frac{diamater\ (a)}{2}\\\\r=\frac{18}{2}\\\\r=9

Volume of cylinder =\pi\times(radius)^2\times(height)

=\pi\times(9)^2\times11\ \ \ \ \ \ (\pi=3.14)\\\\=3.14\times9\times9\times11\\\\=2797.74\\\\\approx2797.7

6 0
3 years ago
Which are the coordinates of the midpoint of JK with endpoints J(-7, -1) and K(13, -6)?
dsp73
The x coordinate of J is -7. The x coordinate of K is 13. The x coordinates add up to -7+13 = 6. Divide this result in half to get 6/2 = 3. Therefore, the midpoint has an x coordinate of 3.

The y coordinate of J is -1. The y coordinate of K is -6. The y coordinates add up to -1+(-6) = -7. Divide this result in half to get -7/2. Therefore, the midpoint has a y coordinate of -7/2.

This is why the final answer is choice D) (3, -7/2)
7 0
3 years ago
7. Alice wants to calculate the total cost for a dress. The dress costs $53.99
Zinaida [17]

Answer:

C

Step-by-step explanation:

total cost=53.99+53.99×7/100=53.99+53.99×.07)=53.99(1+.07)=53.99(1.07)

7 0
3 years ago
Help please!!! Geometry
N76 [4]
The answer would be letter d
5 0
4 years ago
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