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3 years ago

Ivan tried to evaluate the expression 6 - 2 + 4 x 9. Here is his work:

2 answers:

6 0

Ivan is correct, because according to PEMDAS, multiplication comes first before both addition and subtraction, so all of Ivan's steps are correct.

faltersainse [42]3 years ago

4 0

I believe he is correct because you add/subtract from left to right, hence

6-2 comes first.

PEMDAS

()^X/+-

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The sum of two numbers is at most 12, and the sum of 3 times the first number and 8 times the second number is at least 48 selec

Sever21 [200]

Answer:

(4,8)

Step-by-step explanation:

4 + 8 = 12

3(4) + 8(8)

= 12 + 64

= 76

6 0

2 years ago

Dave spent 21 minutes completing a race. He walked 9 minutes and jogged the rest. What

nasty-shy [4]

Dave jogged for 9 minuets and walked for 12 minuets

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2 years ago

For your friend's birthday, you have 3 presents to wrap. Find the combined surface area of these 3 gifts so you know how much wr

omeli [17]

The answer is: 5,614 square inches.

The explanation is shown below:

1. The gift on the bottom is a rectangular prism. To calculate its surface area, you must apply the following formula:

$SA=2[(l)(w)+(l)(h)+(h)(w)]$

Where $l$ is the length (20 inches), $w$ is the width (42 inches) and $h$ is the heigth (16 inches).

2. Substitute values:

$SA1=2[(20in)(42in)+(20in)(16in)+(16in)(42in)]=3,664in^{2$

3. The surface area of the other gifts can be calculated with the formula for calculate the surface area of a cube:

$SA=6s^{2}$

Where $s$ is the side.

4. The surface area of the bigger cube is:

$SA2=6(15in^{2})=1,350in^{2}$

5. The surface area of the smaller cube is:

$SA3=6(10in^{2})=600in^{2}$

6. The total surface area (the combined surface area of the three gifts) is:

$SAt=SA1+SA2+SA3\\SAt=3,664in^{2}+1,350in^{2}+600in^{2}\\SAt=5,614in^{2}$

7 0

3 years ago

PLEASE HELP ASAP WILL GIVE 30 POINTS

kykrilka [37]

Answer:

C. $\displaystyle (−∞, 5) ∪ (5, ∞)$

Step-by-step explanation:

This is obvious the correct answer, considering that the denominator can NEVER equal zero.

I am joyous to assist you anytime.

3 0

3 years ago

Which of the following is a factor of 10x2 − 19x + 6?

ozzi

9 and 4 are the factors

6 0

3 years ago