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3 years ago

9

Which equation is true for the value b = 2?

2 answers:

olya-2409 [2.1K]3 years ago

7 0

Answer:

B. 3b - 2 = 4.

Step-by-step explanation:

Let us check each equation by plugging in the value of b = 2 to see if it is true.

A. 2 × 2 + 24 = 4 + 24 = 28.

28 ≠ 30 . So A is not true.

B. 3 × 2 - 2 = 6 - 2 = 4.

4 = 4. B is true!

C. 2 + 4 = 6.

6 ≠ 8. C is not true.

D. 2 × 2 - 3 = 4 - 3 = 1.

1 ≠ 0. D is not true.

I hope this helps!

Doss [256]3 years ago

6 0

C is the correct answer

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A Honda Element with a dealer invoice price of $19,700 was retail priced at $23,000 how much is the approximate percent markup b

-BARSIC- [3]

So the mark up is 23,000-19,700 = 3,300

To figure of what the percent of markup is based on the SELLING price:

3,300/23,000 = x/100; now cross multiply and you have:
23,000x = 3,300(100)
23,000x = 330,000; isolate x by dividing both sides by 23,000, and you get x= 14.35

To check your work multiply 23,000 x 0.1435 = 3000.05, which was the approximate amount of markup

4 0

3 years ago

Use inverse operations to solve the equations y+3= - 20

Virty [35]

Answer:

Y=-23

Step-by-step explanation:

Move constant to the right side and change the sign

y=-20-3

calculate difference

4 0

3 years ago

Two trains move between two towns. It takes the first train 2 hr 48 min and it takes the second 4 hr 40 min. The rate of the fir

Umnica [9.8K]

Answer:

182 miles.

Step-by-step explanation:

Given:

Two trains move between two towns.

Time taken by first train = 2 hr 48 minutes =

Change minute into hour:

60 minute = 1 hour

1 minute = $\frac{1}{60}$

48 minutes = $\frac{1}{60}\times48=\frac{48}{60} =0.8\ hour$

Time taken by first train in hour = $2+0.8=2.8\ hours$

Time taken by second train = 4 hr 40 minutes

Similarly, 40 minutes = $\frac{40}{60} =0.67\ hour$

Time taken by second train in hour = $4+0.67=4.67\ hours$

The rate of the first train is 26 mph more than that of the second train.

Question asked:

What is the distance between these towns ?

Solution:

Let speed of second train = $x\ miles\ per\ hour$

<u>As the speed of the first train is 26 mph more than that of the second train. </u>

Speed of first train = $26+x\ miles\ per\ hour$

As two trains move between two towns means distance traveled by both train is same.

By using : $Distance=speed\times time$

Distance traveled by first train = Distance traveled by second train

$speed\times time$ =

$(26+x)2.8=x\times4.67$

$26\times2.8+x\times2.8=4.67x\\72.8+2.8x=4.67x\\$

Subtracting both sides by $2.8x$

$72.8=1.87x$

Dividing both sides by 1.87

$x=38.93$

Speed of second train = 38.93 miles per hour

$Distance=speed\times time$

= 38.93 $\times$ 4.67

= 181.80 miles.

Thus, the distance between these towns is 182 miles (nearest whole number).

3 0

3 years ago

Can’t figure it out, need help

bearhunter [10]

Answer: 74+39=113. So the answer is 113

5 0

2 years ago

Zeke and Scarlett deposit $500.00 into a savings account which earns 5% interest

nordsb [41]

Answer:

578.81

Step-by-step explanation:

PV(1+i)ⁿ

500(1+.05)³

578.8125

which rounds to 578.81

4 0

2 years ago