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chubhunter [2.5K]
4 years ago
13

Find the area of a rectangle if length = 2a + b and breadth = 3a + c

Mathematics
2 answers:
Rama09 [41]4 years ago
7 0

Answer:

6a^2+2ac+3ab+b^2

Step-by-step explanation:

Given

length=2a+b

breadth=3a+c

Now,

Area=?

We know,

Area=l*b

(2a+b)*(3a+c)

2a(3a+c)+b(3a+c)

6a^2+2ac+3ab+b^2

You can use formula (a+b)^2

a^2+2ab+b^2

Aneli [31]4 years ago
6 0

Step-by-step explanation:

A=l×b

=(2a+b)(3a+c)

=6a²+2ac+3ba+bc

hope it helps.

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An account earns annual simple interest. Interest earned: $84 principal:$600 interest rate:7% find the time ?
Helen [10]
Simple Interest , I =  PRT/100

Where P = Principal, R = Rate, T = Time in years

Time, T =    (100*I)/(P*R)

T =  100* 84 / (600 * 7)            Use your calculator

T = 2

Time is 2 years.
3 0
4 years ago
Pam and Amanda and Mike work at different clothing stores. Amanda made twice what Pam earned and Julie
Dmitriy789 [7]

Answer:

Pam: $181

Amanda: $362

Julie: $452

Step-by-step explanation:

(What does Mike have to do with this problem?)

Let a = Amanda's pay

Let p = Pam's pay

Let j = Julie's pay

"Amanda made twice what Pam earned"

a = 2p

"Julie made $90 more than Amanda"

j = a + 90

j = 2p + 90

Pam earned p

Total salary

a + p + j = 2p + p + 2p + 90

Total salary

$995

2p + p + 2p + 90 = 995

5p = 905

p = 181

a = 2p = 2(181) = 362

j = 2p + 90 = 362 + 90 = 452

Answer:

Pam: $181

Amanda: $362

Julie: $452

8 0
4 years ago
Help please! I need this question answered!
Pavel [41]

Answer:

1)  f(g(-2))=-3,      2) g(f(0))=5

Step-by-step explanation:

1)f(g(-2))

First, g(-2) means that x=-2. Hence, you must find the value of g(x) in the table when x=-2. You can see that, when x=-2, g(-2) = -3.

Next, you must find f(-3) in the graph, where x=-3. You can see in the graph that, when x=-3, f(-3) = -2.

Therefore, f(g(-2))=-3

2) g(f(0))

In the case, we must apply the inverse procedure. First, check in the graph that, when x=0, f(0) =1.

Next, we must look at the table and see that, when x=1, g(1)=5. Hence,

g(f(0))=5

5 0
3 years ago
How many stamps will each have?!!
Leto [7]
Hey mate!
You stuck?

Xian and Kai would both need to receive stamps for 6 months to eventually have the same amount of stamps.

Xian: 12 stamps from club x 6 months + 56 stamps = 128
Kai: 8 stamps from club x 6 months + 80 stamps = 128


Hope this helps! :)
3 0
3 years ago
What is the length of the base of a right triangle with an area of 20m2 and the height of 4 m
Eva8 [605]

Answer:

The base is 10 meters

Step-by-step explanation:

The area of a right triangle is (b × h) ÷ 2 = a

Let's input the given values and find the value of b:

(b × 4) ÷ 2 = 20

4b ÷ 2 = 20

2b = 20

b = 10

Check:

(10 × 4) ÷ 2 = 20

40 ÷ 2 = 20

20 = 20

It works!

8 0
3 years ago
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