Use proportions.

(a)

2 workers are to 19 as x workers are to 38

2/19 = x/38

x = 4

(b)

2/19 = x/76

x = 8

(c)

2/19 = x/133

19x = 2 * 133

19x = 266

x = 14

7 0

3 years ago

. In a factory there are three machines, A, B, and C. When all three machines are working, they produce 287 bolts per hour. When

lawyer [7]

Answer:

85 bolts.

Step-by-step explanation:

The work rate of a machine is given by the job completed per time:

$R = \frac{work}{time}$ . If your problem has multiple machines working together to complete a job, you should sum their work rates:

$R_{A}+R_{B}+R_{C}+...$

In the problem given:

$R_{A}+R_{B}+R_{C}=\frac{287 bolts}{h}\\ R_{A}+R_{C}=\frac{197 bolts}{h} \\R_{A}+R_{B}=\frac{202 bolts}{h}$

To solve the equation system for $R_{B}$ , you could subtract the first and last equations:

$R_{A}+R_{B}+R_{C}=287\\- (R_{A}+R_{B}=202)\\\\$

Then, $R_{C}=287 - 202 = 85 \frac{bolts}{h}$ .

6 0

3 years ago

The measures of the angles of △ABC are given by the expressions in the table.

FrozenT [24]

A = 120 and C = 45 I took the test

6 0

3 years ago

There are two jobs you can apply for. The first job pays $22,000 the first year, with raises of $4,000 each year thereafter. The

WARRIOR [948]

The answer should be 2. Which means after two years they will be the same amount.

6 0

4 years ago

Please helppppppppppppp​

Please helppppppppppppp