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juin [17]
2 years ago
11

Two trains, Train A and Train B, weigh a total of 366 tons. Train A is heavier than Train B. The difference of their weights is

190. What is the weight of Train A?
Mathematics
1 answer:
attashe74 [19]2 years ago
4 0

Answer:

278 tons

Step-by-step explanation:

Given data

Train A and Train B, weigh a total of 366 tons

A+B= 366----------1

We are also given that

A-B= 190-----------2

from 1

A= 366-B

put this in equation 2, we have

366-B-B= 190

366-2B= 190

366-190= 2B

176=2B

divide both sides by 2

B= 176/2

B=88 tons

Put B= 88 in equation 1 to find A

A+88= 366

A= 366-88

A=278 tons

Hence Train A is 278 tons

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Salsk061 [2.6K]

Answer:

36

Step-by-step explanation:

Frequency of less than 4:

6 + 4 + 8 = 18

Probability:

18/50 × 100 = 36%

5 0
3 years ago
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Sarah will buy bracelets and necklaces in order to sell them in her schools fund raising activity. The bracelets cost $2 and the
Alborosie

Answer:

The answer will be:

b ≥ 10

Step-by-step explanation:

The bracelets cost $2 and the earrings cost $3.

She needs to make at least $60.

She will need to sell more than 10 bracelets.

b = bracelets

e = earrings

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3 years ago
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Answer:

5,184•b•t^6/5

Step-by-step explanation:

Here, we want to multiply the expressions

According to indices law, if we have same bases, we add up the exponents

Thus, we have that;

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8 0
2 years ago
Find all the missing elements:
pentagon [3]

Answer:

B = 34.2°

C = 58.2° or 121.8°

c= 10.6

Step-by-step explanation:

Step 1

Finding c

We calculate c using Pythagoras Theorem

c²= a² + b²

c = √a² + b²

a= 8, b = 7

c = √8² + 7²

c = √64 + 49

c = √(113)

c = 10.630145813

Approximately c = 10.6

Step 2

Find B

We solve this using Sine rule

a/sin A = b/sin B

A = 40°

a = 8

b = 7

Hence,

8/sin 40° = 7/sin B

8 × sin B = sin 40° × 7

sin B = sin 40° × 7/8

B = arc sin (sin 40° × 7/8)

B ≈34.22465°

Approximately = 34.2°

Step 3

We find C

Find B

We solve this using Sine rule

b/sin B = c/sin C

B = 34.2°

b = 7

c = 10.6

C = ?

Hence,

7/sin 34.2° = 10.6/sin C

7 × sin C = sin 34.2 × 10.6

sin C = sin 34.2° × 10.6/7

C = arc sin (sin 34.2° × 10.6/7)

C = arcsin(0.85)

C= 58.211669383

Approximately C = 58.2°

Or = 180 - 58.2

C = 121.8°

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