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Zinaida [17]
3 years ago
5

The length of a rectangle is 3 cm longer than its width.

Mathematics
1 answer:
pochemuha3 years ago
7 0

Answer:

108 cm²

Step-by-step explanation:

Area of a rectangle, A = length, l × width, w

Perimeter of a rectangle = (2 × length) + (2 × width)

42 cm = 2l + 2w

<em>but</em><em> </em>length = w + 3cm

42 cm = 2(w + 3cm) + 2w

42 cm = 2w + 6cm + 2w

42 cm = 6cm + 4w

4w = (42 - 6) cm

4w = 36 cm

》w = 9cm

》l = w + 3cm = 9cm + 3cm

l = 12 cm

Area = 12 × 9 = 108 cm²

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16 - 76 = 60


4 0
4 years ago
Joey decides to empty his piggy bank and count his money. His bank is filled with only nickels and dimes. Joey counted a total o
xxTIMURxx [149]

Answer:

Joey has 18 nickles and 27 dimes in his piggy bank.

Step-by-step explanation:

1 nickle = 5 cents

1 dime = 10 cents

$1 = 100 cents

$3.15 = 135 cents

Let

n represent the number of nickles, n>=0

d represent the number of dimes, d>=0

Joey counted a total of 45 coins that added up to $3.15:

n + d = 45

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5 0
3 years ago
WILL GIVE BRAINLIEST!!!!! PLEASE ANSWER FAST
rosijanka [135]
The answer is 103 I finished this question just now
8 0
3 years ago
Read 2 more answers
Select the correct answer from each drop down menu
Flura [38]

Answer:

Domain is Set of all real numbers

Step-by-step explanation:

1. Domain : It is the set of values for which our function is defined and it gives some value of f(x) for every value of x in it.

h(x)=f(x)÷g(x)

f(x)=x^2-8x+15

   =x^2-3x-5x+15

  =x(x-3)-5(x-3)

    =(x-5)(x-3)

g(x)=(x-3)

h(x)=\frac{f(x)}{g(x)}

h(x)=\frac{(x-5)(x-3)}{(x-3)}

h(x)=(x-5)

Hence we see that h(x) is defined for every value of x

Domain is Set of all real numbers

5 0
3 years ago
A ball was thrown with an initial upward velocity of 80 ft./s from an initial height of 4 feet right in equation for H the heigh
ella [17]
That would be-
f(t)=80t+4
How I worked that out-
f(x)=mx+b
b= the y intercept which is 4
mx= your slope, which is 80t
f(t) is your height

5 0
4 years ago
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