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3 years ago

What is the solution to this equation? 6+7(b−1)=5+b A. b = 0

2 answers:

4 0

6 + 7(b-1) = 5 + b
6 + 7b - 7 = 5 + b
7b - 1 = 5 + b
7b (-b) - 1 (+1) = 5 (+1) + b (-b)
6b = 6
6b/6 = 6/6
b = 1

hope this helps

mart [117]3 years ago

4 0

B = 1. The guy that answered before me has the perfect explanation.

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Which expression is equivalent to 30 (1/2x - 2) +40 (3/4y-4)? (will add pic)

bixtya [17]

Answer:

Step-by-step explanation:

Given

30( $\frac{1}{2}$ x - 2) + 40( $\frac{3}{4}$ y - 4)

Multiply each of the terms in the first parenthesis by 30 and multiply each of the terms in the second parenthesis by 40.

= 15x - 60 + 30y - 160

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3 years ago

Simplify the expression. Write your answer without negative exponents.

Phoenix [80]

Answer:

-5/ (x^19 * y^12)

Step-by-step explanation:

-15x^-10 * y ^ -3 * x^-9 * y^-9/3 (It's writing it like this.)

15 and 3 have a GCF of 3.

-5x^-10 * y^-3 * x^-9 * y^-9/1

Reduce similar occurrences. *twice in a row*

-5x^(-10 + (-9)) * y^(-3 + (-9))/1

Remove extra signs *twice in a row*

-5x^(-10 - 9) * y^(-3 - 9)/1

Remove extraneous 1.

-5x^(-10 - 9) * y^(-3 - 9)

Add integers.

-5x^-19 * y^-12

Negative powers change multiplication to division.

-5 / (x^19 * y^12) is the final answer.

Even with that, the simplified answer wouldn't have negative exponents because of the negative powers rule.

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2 years ago

What are the coordinates of the point?

Olenka [21]

Answer:

(-3,6)

Step-by-step explanation:

As graph shows x=-3 and y=6

6 0

3 years ago

Read 2 more answers

Find the surface area.

Margaret [11]

Answer:

1014cm^2

Step-by-step explanation:

find the area of one side and times it by 6 (bc a cube has 6 sides)

13×13=169

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3 years ago

If a certain trip takes 40 minutes when you travel 50 miles per hour, how many minutes would it take if you travel 40 miles per

vitfil [10]

Answer:

It would take 50 minutes

Step-by-step explanation:

Distance, velocity and time

The speed is the rate at which the distance changes with respect to time. If x is the distance, t is the time, the speed v can be obtained by

$\displaystyle v=\frac{x}{t}$

We know the trip takes 40 minutes when traveling at 50 miles/hour. The distance can be determined by isolating x in the above equation

$x=vt$

The given time is expressed in minutes, we need to convert it to hours. 40 minutes is $\frac{40}{60}=0.6666...\ hours$ . The distance is

$\displaystyle x=(50)(0.666..)=33.33\ miles$

If the speed was 40 miles/hour, the same distance would be covered in t hours, taken from the above equation as

$\displaystyle t=\frac{x}{v}$

$t=\frac{33.33}{40}=0.8333\ hours = 0.83333*60= 50\ minutes$

4 0

3 years ago

Read 2 more answers