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2 years ago

What is equivelent to 4x+(2x+4)?

Mathematics

1 answer:

givi [52]2 years ago

3 0

Answer:

8x + 16

Step-by-step explanation:

4x times 2x = 8x

4 times 4 = 16

8x + 16

YW!!!

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The equation 5x - 7(x-1) = ax+b has exactly one solution.

Dimas [21]

Answer:

a = -2 and b = 7

Step-by-step explanation:

We need to solve for the value of "a" and "b".

We need to distribute and make the left side of the equation same form as the right side of the equation and match the coefficients, simple.

We will use the distributive property shown below to expand the left side and simplify.

<u>Distributive Property:</u> a(b-c) = ab - ac

Now, simplifying left hand side:

5x - 7(x - 1)

= 5x -7(x) -7(-1)

= 5x -7x +7

= -2x + 7

The right hand side is "ax + b".

If we match left-hand side and right-hand side, we see that:

a = -2

and

b = 7

THese are the only solution.

8 0

3 years ago

Zoe has 5 pounds of potatoes. She has multiple recipes that require 3/4 pounds of potatoes. How many recipes will she be able to

7nadin3 [17]

To find the answer convert 5 into 5/1. To make it compatible with 3/4 you have to have the same denominator. So to make 5/1 compatible with x/4 you multiply both sides by 4, so it would be 20/4. And then to find how many recipes you can make you would multiply 3 to the highest number it can be that does not exceed 20. The closest 3 can get to 20 before exceeding it would be 6 times. 6/1x3/4 =18/4. So you could make 6 recipes and you would have 2 pounds of potatoes left.

Zoe can make 6 recipies and she will have 2 pounds of potatoes left.

4 0

3 years ago

Read 2 more answers

Which polygons are congruent? Select each correct answer. a rhombus with all sides marked 15 units long. a square with two sides

Andre45 [30]

Here is your answer

Good luck

3 0

4 years ago

Read 2 more answers

Caleb took 18 photos at the zoo. One sixth of his photos are of giraffes. How many of Calebs photos are of giraffes?

svetlana [45]

3 of the photos are of giraffes, because one sixth of 18 is 3.

6 0

3 years ago

Read 2 more answers

A lock on a lab door has buttons numbered 0 through 9. The right code for opening the lock is 8542. Also, if on three consecutiv

Viktor [21]

Answer:

Step-by-step explanation:

given that a lock on a lab door has buttons numbered 0 through 9. The right code for opening the lock is 8542

Also, if on three consecutive attempts, a wrong code (a code is a combination of 4 ordered distinct digits) is entered, then a burglar alarm is let off.

when you forget the code, you try at random

There are 10 ways of selecting each digit

So total number of ways of trials at random = $10^4 =10000$

The probability that you get in (without letting off the alarm).

= Probability that you try correct number in I or II or III trial atmost

Prob for correct guessing = 1/10000

The probability that you get in (without letting off the alarm).

= Probability that you try correct number in I or II or III trial atmost

= $\frac{1}{10000} +\frac{9999}{10000}\frac{1}{10000}+(\frac{9999}{10000})^2\frac{1}{10000}$

Because if you get in I trial you leave. If you fail in I you try for second, similarly if you fail 2 times 3rd should be correct

=0.0002

7 0

3 years ago