All categories

3 years ago

Determine the answer to 3 + (−5) and explain the steps using a number line.

Mathematics

2 answers:

umka21 [38]3 years ago

8 0

Answer:

The answer would be -2

Step-by-step explanation:

A trick I learned is that you can take the negative and turn it into a positive and add them but you have to remember the product would be a negative after if you are adding positive and a negative

horsena [70]3 years ago

4 0

Answer:

$\boxed{ -2}$

Step-by-step explanation:

On a number line

Adding a positive number means moving to the right
Adding a negative number means moving to the left

Using the number line,

Add 3 + (-5)

Step 1. Find 3 on the number line

Start at 0 and move three units to the right (see Image below).

This takes you to 3.

Step 2. Add (-5)

Start at 3 and move five units to the left.

This takes you to -2.

$\boxed{\textbf{3 + (-5) = -2}}$

You might be interested in

Pattern x and y are generated using the rules. Pattern x: start with 0 and add 6. Pattern y: start with 1 and multiply 2. Patter

timama [110]

Answer:

Pattern $x$ : $0,6,12,18$

Pattern $y$ : $1,2,4,8$

Step-by-step explanation:

Given:

Pattern x: start with 0 and add 6.

Pattern y: start with 1 and multiply 2.

To find: patterns $x$ and $y$

Solution:

Pattern $x$ : $0,0+6,0+6+6,0+6+6+6=0,6,12,18$

Pattern $y$ : $=1,1(2),1(2)(2),1(2)(2)(2)=1,2,4,8$

7 0

3 years ago

A toy manufacturer claims that the mean time that its top-selling toy captures children's attention is at least 45 minutes. Supp

riadik2000 [5.3K]

Answer:

$H_0:\mu =45\\\\H_a:\mu\geq 45$

Step-by-step explanation:

Since we have given that

A toy manufacturer claims that the mean time that its top-selling toy captures children's attention is at least 45 minutes.

Since we need to carry out a hypothesis test whether he can refute the claim.

We always take the alternate hypothesis such that it should satisfy the given statement.

And the null hypothesis can be equal to mean or other than that is given in alternate hypothesis.

So, hypothesis :

$H_0:\mu =45\\\\H_a:\mu\geq 45$

5 0

3 years ago

Two mechanics worked on a car. The first mechanic charged $65 per hour, and the second mechanic charged $90 per hour. The mechan

Katena32 [7]

Answer:

First mechanic worked 20 hours and second mechanic worked 5 hours

Step-by-step explanation:

Let the number of hours the first mechanic worked = $a$

Let the number of hours the second mechanic worked = $b$

Therefore, we can write 2 equations and then solve them simultaneously:

$a+b=25$

$65a+90b=1750$

Rearranging the first equation: $a=25-b$

and substituting into the second equation to find $b$ :

$65(25-b)+90b=1750$

$1625-65b+90b=1750\\
25b=125\\
b=5$

Now sub $b=5$ into the first equation to find $a$

$a+5=25\\
a=20$

Therefore, first mechanic (a) worked 20 hours and second mechanic (b) worked 5 hours

4 0

2 years ago

which expression represents the amount of money john has collected? john collects $5 for club dues from each member.

Verdich [7]

5.00x (number of people)

7 0

3 years ago

Please help me i don't understand what my answer should be . i'll give brianliest jus please help

AnnyKZ [126]

Answer:

Step-by-step explanation:

1. ABE bc the both have a right angle. plus when added together, they make a square which means they are the same.

2. id remember how to do the second one i am so sorry

6 0

3 years ago

Read 2 more answers