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2 years ago

Which expressions are equivalent to g + h + (j + k)? Check all that apply.

Mathematics

2 answers:

Ulleksa [173]2 years ago

7 0

Answer is 3.

Step by Step

I took a test with this question

Paha777 [63]2 years ago

5 0

Answer:

${ \tt{g + h + (j + k)}} \\ = (g + h) + j + k$

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Where was a error made in combining and solving the equation below?

Lera25 [3.4K]

It should be a positive 5 not a negative so the error was made at the end because u divide

3 0

3 years ago

An online store sells only two types of bandanas: cotton bandanas and silk bandanas. Cotton bandanas cost $7 each, and silk band

qwelly [4]

Given :

An online store sells only two types of bandanas: cotton bandanas and silk bandanas. Cotton bandanas cost $7 each, and silk bandanas cost $11 each.

Mrs. Tran spent a total of $93 on bandanas at this store.

To Find :

How many cotton bandanas did Mrs. Tran buy.

Solution :

Let, number of cotton and silk bandanas buys are x and y respectively.

So, 7x + 11y = 93

x = (93 - 11y)/ 7

Putting y = 1 , x = 82/7 ( not possible since x can only be positive integer )

Putting y = 4 , x = 7

Therefore, Mrs . Tran will buy 7 cotton bandanas.

Hence, this is the required solution.

8 0

2 years ago

Wondering if anyone could help?

aleksklad [387]

Answer:

error

Step-by-step explanation:

4 0

2 years ago

Morgan, Dakota and Taylor showed their work solving the equation 7x+5x+1=73. Identify the student with the invalid first step an

antoniya [11.8K]

Answer:

Step-by-step explanation:

Given the equation solved by Morgan, Dakota and Taylor expressed as 7x+5x+1=73, to get the value of x, the valid steps are as shown;

7x+5x+1=73

take the sum of 7x and 5x

12x+ 1 = 73

subtract 1 from both sides

12x+1-1 = 73-1

12x = 72

Divide both sides by 12

12x/12 = 72/12

x = 6

Based on the calculation above, the students with invalid first step is Dakota.

Dakota added 5x with 1 to get 6x which is an invalid step because 1 is not attached to a variable x. A function cannot be added to a constant hence making his first step invalid.

8 0

3 years ago

Read 2 more answers

Solve these inequalities by showing all steps of working b) 5x + 4 < 16 *

Mama L [17]

Step-by-step explanation:

5x+4<16

or,5x<16-4

or,5x<12

or,x<12÷5

or,x<12/5

or,x<2.4

:.x<2.4

6 0

3 years ago

Read 2 more answers