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bogdanovich [222]
2 years ago
14

Pls help i only have 2 minutes!!!!!!!!!!!!!!

Mathematics
2 answers:
nikdorinn [45]2 years ago
7 0

Answer:

(-25)+12

=13

40+(-63)

=23

umka21 [38]2 years ago
4 0

Answer:

40 + ( -63) is less

Step-by-step explanation:

.... .....

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What is the sum of the angle measures in a 26-gon?
nasty-shy [4]
The formula for finding the sum of the angle measure is...

(n-2) × 180<span>°
</span>
Since this has 26 sides....
 (26-2)x180

24x180
The sum of the angle measures is 4,320 degrees

Please give me brainliest, a 5-rate, and a thanks!!
5 0
3 years ago
Find the product? (n - 4)(3n+7)
vampirchik [111]

Answer:

3n^2 - 5n - 28

Step-by-step explanation:

(n - 4)(3n + 7)

3n^2 + 7n - 12n - 28

3n^2 - 5n - 28

hope this hepls!!!

6 0
2 years ago
Read 2 more answers
In 1-5, given: Two similar cylinders with heights of 8 and 5 respectively.
lana66690 [7]

Answer:

1. The ratio of their diameters is 8/5 = 8 : 5

2. The ratio of their surface area is (8/5)²

3. The ratio of their volume is (8/5)³

4.The area of the base of the larger cylinder is 128 cm²

Step-by-step explanation:

Given that the two cylinders are similar, we have;

Two cylinders are similar when the ratio of their heights is equal to the ratio of their radii

Therefore, we have;

1. The ratio of the height of the two cylinders = 8/5 = The radio of their radii = r₁/r₂

The ratio of their diameter = D₁/D₂ = 2·r₁/2·r₂ = r₁/r₂ = 8/5

The ratio of their diameters D₁/D₂ = 8/5 = 8 : 5

2. The surface area of the cylinders = 2·π·r·h + 2·π·r²

Therefore, we have;

(2·π·r₁·h₁ + 2·π·r₁²)/(2·π·r₂·h₂ + 2·π·r₂²) = (r₁·h₁ + r₁²)/(r₂·h₂ + r₂²)

h₁ = h₂ × 8/5

r₁ = r₂ × 8/5

= (8/5)²(r₂·h₂ + r₂²)/(r₂·h₂ + r₂²)  = (8/5)²

The ratio of their surface area = (8/5)²

3. The volume of the cylinder = π·r²·h

∴ The ratio of the volume = (π·r₁²·h₁)/(π·r₂²·h₂) = (8/5)³ × (π·r₂²·h₂)/(π·r₂²·h₂) = (8/5)³

The ratio of their volume = (8/5)³

4. The ratio of the area of the base of the larger cylinder to the area of the base of the smaller cylinder is (8/5)²

Therefore if the area of the base of the smaller cylinder is 50 cm², the area of the base of the larger cylinder = 50 cm² × (8/5)²  = 128 cm²

7 0
2 years ago
A yardstick casts a shadow of 24 in. at the same time a telephone pole casts a shadow of 20 ft 8 in. What is the height of the t
BabaBlast [244]
1 yd = 36 in;  20 ft 8 in = 248 in;
We will use a proportion:
36  : 24 = x : 248
24 x = 36 * 248
24 x = 8,928
x = 8,928 : 24 = 372
Answer:  C ) 372 in
5 0
3 years ago
Write the equation in slope-intercept form, then find the slope and the y intercept. Finally draw the graph of the line. 9x+5y=2
Oksi-84 [34.3K]

Answer:

Check explanation.

Step-by-step explanation:

slope-intercept form: y=mx+b

9x+5y=23

5y=-9x+23

y=-9/5x+23/5

m=slope: -9/5

b=y-intercept: 23/5

4 0
3 years ago
Read 2 more answers
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