All categories

2 years ago

Evaluate 3x-4y when x=5 and y=-1

Mathematics

1 answer:

balandron [24]2 years ago

8 0

Answer:

19 is the answer

Step-by-step explanation:

3x - 4y

= 3 × 5 - 4 × (-1)

= 15 + 4

= 19

hope this answer will help you

You might be interested in

Convert 68% As a fraction

Artist 52 [7]

Answer:

68/100

Step-by-step explanation:

answer is 68/100

8 0

2 years ago

Read 2 more answers

How to solve 2 divided by 1/7

Ivahew [28]

Answer:

Step-by-step explanation:

You can put it as a fraction like so:

2/1 divided by 1/7

Use the strategy KCF (Keep, Change, Flip)

2/1 x 7/1

=2x7

=14

6 0

2 years ago

Read 2 more answers

Expand and combine like terms. (3c^4-5c^6)^2

lora16 [44]

Answer:

$9c^{8} -30c^{10} + 25c^{12}$

Step-by-step explanation:

We can use formula (a-b)² = a² -2ab + b².

In our example a = 3c^4 and b = 5c^6

$(3c^{4} - 5c^{6})^{2} = [3c^{4} ]^{2} - 2*3c^{4} *5c^{6} + [5c^{6}]^{2}=\\=9c^{8} -30c^{10} + 25c^{12}$

4 0

2 years ago

I can't figure out number 7.

Levart [38]

It would take just over 6 minutes assuming it takes him 2. 6 minutes to wax a single square inch somehow.

8 0

3 years ago

Dora goes to a store and buys a phone originally priced at $45. The store is running a discount of 18%. What is the price of the

Alenkinab [10]

Answer: 8.1 $

Step-by-step explanation: 18 percent of 45 is 8.1 ez math hope this helps.

3 0

2 years ago