3 years ago

The perimeter of a rectangle is 63cm. The length is 4cm more than its width. Find the dimensions of the rectangle

Mathematics

1 answer:

amm18123 years ago

6 0

O=63cm

a=b+4

O=2a+2b

O=2(b+4)+2b

O=2b+8+2b

63=4b+8

4b=63-8

4b=55

b=55/4=13.75

a=13.75+4=17.75

You might be interested in

Two functions are given below. How does the graph of

tensa zangetsu [6.8K]

I think it’s C. I plugged it on to a graph and shows that graph a is steeper than graph b. red is graph a. blue is graph b.

7 0

2 years ago

If you know the answer to this let me know pls!

Bad White [126]

Answer:

I think it is C.

Step-by-step explanation:

Have a good day. :-)

5 0

2 years ago

A migrating bird flies 420 miles in 14 hours how many miles does it fly in 5 hours

8_murik_8 [283]

150 because if it is going 420 in 14 hours you divide 420 by 14 which gives you 30 and then you multiply 30 x 5 and you get 150 so the bird goes 150 miles in 5 hours

3 0

3 years ago

Read 2 more answers

A population, P(t) (in millions) in year t, increases exponentially. Suppose P(9)=16 and P(18)=24. a) Find a formula for the pop

jenyasd209 [6]

Answer: $\frac{32}{3}\left ( 1.0460\right )^t$

Step-by-step explanation:

Given

Population changes exponentially

$P\left ( t\right )=ab^t$

$P\left ( 9\right )=16$ ------1

$P\left ( 9\right )=16=ab^8$

$P\left ( 18\right =24=ab^{18}$ -----2

divide 1 & 2 we get

$\frac{24}{16}=\frac{b^{18}}{b^9}$

$\frac{3}{2}=b^9$

Substitute $b^9$ in 1 we get

$a=\frac{32}{3}$

Thus $P\left ( t\right )=\frac{32}{3}\left ( 1.0460\right )^t$

8 0

2 years ago

Read 2 more answers

A person standing 20 feet from a streetlight casts a shadow as shown. How many times taller is the streetlight than the person?

Leviafan [203]

I don't know

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers