Ask question

Ask question

All categories

3 years ago

6

To create an entry code, you must first choose 2 letters and then, 4 single-digit numbers. How many different entry codes can

you create?

1 answer:

Alex_Xolod [135]3 years ago

3 0

Onehundred and forty 2

You might be interested in

I need to simplify x2+2x+1

iris [78.8K]

Answer:

(x+1) (x+1)

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

Prove algebraically that (m + 2)2 – m 2 – 12 is always a multiple of 4

Julli [10]

Answer:

$(m + 2)^{2} - m^{2} - 12 = 4(m - 2)$

Step-by-step explanation:

Step 1:

Write the expression

$(m+2)^{2} - m^{2} - 12$

Step 2: Expand $(m + 2)^{2}$

$(m+2)^{2} - m^{2} - 12\\(m+2)(m+2) - m^{2} - 12\\m^{2} + 2m + 2m + 4 - m^{2} - 12$

Step 3: Collect similar terms

$m^{2} - m^{2} + 4m + 4 - 12\\4m - 8$

Step 4: Factor 4 out of the expression to prove that the expression is a multiple of 4.

$Therefore\\4m - 8 = 4(m - 2)\\Hence,\\(m+2)^{2} - m^{2} - 12 is a multiply of 4 because the expression is equal to 4(m-2)$

3 0

2 years ago

There are 54 students in the cafeteria 30 girl sand 24 boys what is the ratio of girls to boys in cafeteria

tresset_1 [31]

The answer is 5 :4

please mark as brainliest thanks'!!!

3 0

3 years ago

Jocelyn and her children went into a bakery and she bought $9 worth of cookies and brownies. Each cookie costs $0.50 and each br

Yuliya22 [10]

Jace bought 4 cookies and 2 brownies from the bakery.

Let x represent the number of cookies and y represent the number of brownies.

Since he bought $9 worth of cookies and brownies. Each cookie costs $0.75 and each brownie costs $3. hence:

0.75x + 3y = 9 (1)

Also, he bought twice as many cookies as brownies, hence:

x = 2y

x - 2y = 0 (2)

Solving equation 1 and 2 simultaneously gives x = 4, y = 2

Hence Jace bought 4 cookies and 2 brownies from the bakery.

6 0

2 years ago

Where is the length of a surface area

REY [17]

The first number but it doesn't really matter.

3 0

3 years ago

Read 2 more answers