1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Diano4ka-milaya [45]
3 years ago
12

Factor this expression: mn - 4m - 5n + 20

Mathematics
1 answer:
andrey2020 [161]3 years ago
6 0

Answer:

(m-5) (n-4)

Step-by-step explanation:

mn - 4m - 5n + 20

We will factor by grouping

mn -5n  -4m +20

Factor an n out of the first 2 terms and a -4 out of the last 2 terms

n (m-5) -4(m-5)

Now factor out a m-5

(m-5) (n-4)

You might be interested in
RectangleABCD has vertices at A(– 3, 1),B(– 2, – 1),C(2, 1), andD(1, 3). What is the area, in square units, of this rectangle? A
Anna [14]

Answer:

Option A. 10\ units^{2}

Step-by-step explanation:

we know that

The area of the rectangle is equal to

A=LW

where

L is the length of rectangle

W is the width of rectangle

we have

A(-3,1),B(-2,-1),C(2,1),D(1,3)

Plot the vertices

see the attached figure

L=AD=BC

W=AB=DC

the formula to calculate the distance between two points is equal to

d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}

<em>Find the distance AD</em>

A(-3,1),D(1,3)

substitute in the formula

AD=\sqrt{(3-1)^{2}+(1+3)^{2}}

AD=\sqrt{(2)^{2}+(4)^{2}}

AD=\sqrt{20}

AD=2\sqrt{5}\ units

<em>Find the distance AB</em>

A(-3,1),B(-2,-1)

substitute in the formula

AB=\sqrt{(-1-1)^{2}+(-2+3)^{2}}

AB=\sqrt{(-2)^{2}+(1)^{2}}

AB=\sqrt{5}

AB=\sqrt{5}\ units

Find the area

A=(2\sqrt{5})*(\sqrt{5})=10\ units^{2}

4 0
3 years ago
Andy has 901 cards for a big game if he gives away 789 how much does he have left
Leokris [45]

Answer:

the answer is 112

Step-by-step explanation:

901-789=112

4 0
3 years ago
Use the number line to answer the question
nekit [7.7K]

Answer:

2.8

Step-by-step explanation:

I hope this helps!

4 0
3 years ago
Help me out pleasee will give brainliest or whatever its called
Brums [2.3K]

Answer:

-8z-1

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
What is the answer to 16&gt; 1.5 + 0.8b
user100 [1]

Answer:

16>2.3b

Step-by-step explanation:

1.5+0.8=2.3

Substitute b as 1. Which would still keep it as 2.3.

8 0
3 years ago
Other questions:
  • Please help me on this back page :)
    5·1 answer
  • Simplify (3x-8)+(2x+5)-(4x-8)
    14·1 answer
  • A tour group split into two groups when waiting in line for food at a fast food counter. The first group bought 6 slices of pizz
    9·1 answer
  • One scoop of laundry detergent will wash 12 towels. How many scoops would be needed in order to wash 60 towels?
    14·2 answers
  • Can somebody help me with this question please and fast!! I’ll mark brainliest
    7·1 answer
  • A cab company charges $0.25 per 1 mile as well as a flat fee of $2.25 just for taking a ride in the
    8·1 answer
  • Can someone help me with this survey and then with some more that I have, is that I don't know and I hate math; /
    15·1 answer
  • What is the 117th term in the sequence 1,5,9,13,...
    11·2 answers
  • Twelve is what percent of 42
    9·2 answers
  • Can someone answer 55 ÷ (9 - 4) ⋅ 8 for me please,
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!