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masya89 [10]
3 years ago
5

Multiple Choice 1. The sides of a triangle are in the ratio 3 : 4 : 5. What is the length of each side if the perimeter of the t

riangle is 90 cm? (1 point) A. 22.5 cm, 30 cm, and 37.5 cm B. 19.3 cm, 25.7 cm, and 32.1 cm C. 7.5 cm, 11.5 cm, and 32.1 cm D. 10.5 cm, 11.5 cm, and 12.5 cm 2. Is the following always, sometimes, or never true? 6 + 8x – 9 = 11x + 14 – 3x A. always true B. sometimes true C. never true 3. Solve the inequality. Graph the solution set. 5r + 4 ≤ 5
Mathematics
1 answer:
marishachu [46]3 years ago
4 0
3x + 4x + 5x = 12x
=\ \textgreater \  12x = 90
x = 90/12 = 15/2
3x = 3*(15/2) = 45/2 = 22.5 cm
4x = 4*(15/2) = 30 cm
5x = 5*(15/2) = 75/2 = 37.5 cm
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Find the surface area of the cylinder
STatiana [176]
<h2><u>Solution</u>:-</h2>

• Surface area of a cylinder = 2πr(r + h) sq. units.

In the above diagram,

Radius (r) of the cylinder = 13 cm.

Height (h) of the cylinder = 39 cm.

<h3>• Taking value of π = 3.14</h3>

Hence, Surface area of the cylinder = 2 × 3.14 × 13(13 + 39)

Surface area of the cylinder = (81.64 × 52) cm²

Surface area of the cylinder = 4245.28 cm²

The surface area of the cylinder is <u>4</u><u>2</u><u>4</u><u>5</u><u>.</u><u>2</u><u>8</u><u> </u><u>cm²</u>. [Answer]

6 0
3 years ago
The 12th term and the sim of 1+3+5+7+.....
zzz [600]

To find this, first find the factor or rate of which the numbers are moving. To do so do as follows.

subtract 1 from 3

3-1=2

So each number is having 2 added to it.

Now add two to 7 and the numbers afterwards till you get the 12th term

7+2=9

1+3+5+7+9

9+2=11

1+3+5+7+9+11

11+2=13

1+3+5+7+9+11+13

13+2=15

1+3+5+7+9+11+13+15

15+2=17

1+3+5+7+9+11+13+15+17

17+2=19

1+3+5+7+9+11+13+15+17+19

19+2=21

1+3+5+7+9+11+13+15+17+19+21

21+2=23

1+3+5+7+9+11+13+15+17+19+21+23

So 23 is the 12th term


7 0
3 years ago
Please answer this correctly
ra1l [238]

Answer:

42 13/20 km

Step-by-step explanation:

10 3/10+9 7/20+14 7/10+ 8 9/20=41+ (6+7+14+9)/20=41 + 1 13/20= 42 13/20 km

4 0
3 years ago
PLEASE HELP with problems 10 a, b and 11 a, b
goldfiish [28.3K]

Answer:

Step-by-step explanation:

A 11 2x2 is 4-1=3. B 4x4=16

5 0
3 years ago
Read 2 more answers
Can somebody tell me the answer and maybe tell me how you got it too.​
asambeis [7]

To get t on one side, we have to use inverse operations to get rid of the 5.

1. Use inverse operation of multiplication to get rid of 5. Which would be division.

2. Divide both sides by 5.

5t/5 = 7 1/2 / 5

3. Solve.

5t/5 = t and 7 1/2 /5 = 1 1/2

7.5 / 5 = 1.5

Therefore, your answer would be C. divide both sides by 5, and the answer is 1 1/2.

7 0
3 years ago
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