PLEASE HELP ME im not sure which ones i think its the first one but not sure about the rest

I need Someone to help me with this problems equation and answer must be correct (100 Points)

soldier1979 [14.2K]

Answer:

1) 3x+18=45 x=9

2)8-5x=-7 x=3

3)3+2x=15 x=6

4) 12million - 2 million = 10 million

Step-by-step explanation:

3 0

2 years ago

Help! Signs of expression What is the sign of a . b?

Kazeer [188]

Answer:

6-positive

4-positive

2-positive

0-zero

-2-negative

-6-negative

8-positive

Step-by-step explanation:

5 0

2 years ago

Question 12 Multiple Choice Worth 1 points)

natta225 [31]

Complete question:

A spinner is divided into many sections of equal size. Some sections are red, some are blue, and the remaining are green. The probability of the arrow landing on a section colored red is 11 over 20. The probability of the arrow landing on a section colored blue is 6 over 20. What is the probability of the arrow landing on a green-colored section?

Answer: 3/20

Step-by-step explanation:

From the question, the spinner is divided equally into sections painted with 3 different colors (RED, BLUE and GREEN)

Given that:

P(arrow landing on red) = 11 / 20

P(arrow landing on blue) = 6/20

The probability of arrow landing on green is therefore :

Sum of the probabilities of red and blue :

P(arrow landing on red) + P(arrow landing on blue)

= (11/20 + 6/20) = 17/20

Recall : The sum of probabilities of mutually exclusive events must sum up to 1. Therefore, since the events represented above are mutually exclusive, that is no two events can occur at the same time.

Then:

P(arrow landing on red) + P(arrow landing on blue) + P(arrow landing on green) = 1

Hence,

P(arrow landing on green) = 1 - [(P(arrow landing on red) + P(arrow landing on blue)]

P(arrow landing on green) = 1 - [11/20 + 6/20]

P(arrow landing on green) = 1 - 17/20

P(arrow landing on green) = 3/20

4 0

3 years ago

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Help!!!!!!! v is a vector of magnitude 4 making an angle of 30° with the positive x-axis. find v in component form .

Elodia [21]

Since v is a vector of magnitude 4 and makes angle 30° with the positive x axis, vector v in component form is v = 2√3i + 2j

To find vector v in component form, we need to know what a vector is

<h3>What is a vector?</h3>

A vector is a physical quantity that has both magnitude and direction.

<h3>Component of a vector</h3>

A vector can be resolved into perpendicular components along the x, y and z axis.

<h3>Components of vector v</h3>

Since vector v has a magnitude of 4 making an angle of 30 with the positive x - axis, its x-component is V = (vcos30°)i

= (4cos30°)i

= (4 × √3/2)i

= 2√3i.

The y-component of v is V' = (vsin30°)j

= (4 × sin30°)j

= (4 × 1/2)j

= 2j

<h3>Vector v in component form</h3>

So, vector v in component form is v = V + V'

= 2√3i + 2j

So, since v is a vector of magnitude 4 and makes angle 30° with the positive x axis, vector v in component form is v = 2√3i + 2j

Learn more about vectors here:

brainly.com/question/25705666

5 0

2 years ago

jarrett's puppy weighed 3 3/4 ounces at birth . At one week old , the puppy weighted 5 1/8 ounces . At two weeks old , the puppy

Shalnov [3]

First week increase:
5 1/8 - 3 3/4
= 41/8 - 15/4
= 41/8 - 30/8
= 11/8 ounces

Second week increase:
6 1/2 - 5 1/8
= 13/2 - 41/8
= 52/8 - 41/8
= 11/8

Third week weight:
52/8 + 11/8
= 63/8
= 7 7/8 ounces

8 0

3 years ago

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