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3 years ago

Please simplify/evaluate 7x - 2x + 30

Mathematics

1 answer:

FinnZ [79.3K]3 years ago

6 0

Answer:

5x+30

Step-by-step explanation:

7x−2x+30

7x+−2x+30

Combine Like Terms:

7x+−2x+30

(7x+−2x)+(30)

5x+30

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You were playing fetch with your dog an accidentally threw the toy and it

enyata [817]

Answer:

8.1

Step-by-step explanation:

I got this answer of the internet good luck lol

5 0

3 years ago

Help me 7th grade math please

Stolb23 [73]

Answer: 13.5 ounce bottle for $2.19

a 29.2 ounce bottle for $5.37

The 29.2 ounce bottle is better

Step-by-step explanation:

13.5 ounce bottle for $2.19

a 29.2 ounce bottle for $5.37

find the ratios

13.5/2.19 = $6.16 per unit

29.2/5.37 = $5.44 per unit

3 0

2 years ago

Question 2 In the fall, a community service club sold 10 shirts and 20 hats for a total of $490. In the spring, the club sold 20

Stells [14]

To answer the question above, we let s be the cost of a shirt and h be the cost of each hat such that the equations that would best represent the given are:
10s + 20h = 490
20s + 30h = 860
The system of equations is the answer to the first question and the values of s and h are $25 and $12, respectively.

8 0

3 years ago

Can somebody please help me

Nataly [62]

Answer:

The probability of drawing the first pink ball is $\frac{3}{10}$ .

Because you drew that first pink ball, there are two pink balls left and the total number of balls left is nine.

Hence, the probability of drawing another pink ball after drawing the first pink ball would be:

$\frac{3}{10} *\frac{2}{9} =\frac{1}{15}$

5 0

2 years ago

A = {red, green, blue, yellow} B = {orange, purple, black, blue} Find A U B.

Kipish [7]

Answer:

A∪B={ red , green , blue , yellow , orange , purple , black }

Step-by-step explanation:

Let A and B be two subsets Then A∪B represents the union of the two subsets which means that it consists of the elements present in A or B or in both A and B.

given A={ red , green , blue , yellow }

B={ orange , purple , black , blue }

Now A∪B={ red , green , blue , yellow , orange , purple , black }

for getting above first write all the elements in A then start writing elements of B and skip those elements of b which are already present in A and write all the elements of B.

8 0

3 years ago

Read 2 more answers