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svetlana [45]
4 years ago
15

A rectangle has a height of 4cm and a width of 8cm what is the area

Mathematics
1 answer:
aleksley [76]4 years ago
5 0

Answer: 32

Step-by-step explanation:

4cm × 8cm = 32cm

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The time t required to drive certain distance varies inversely with the speed r. It takes 2 hours to drive the distance at 40 mi
Roman55 [17]

Answer:

\frac{16}{9}  hours

Step-by-step explanation:

Whenever 2 quantities (suppose a and b) are inversely proportional to each other, we can write an proportionality equation (with k as proportional constant) as:

a=\frac{k}{b}

Since, here t is INVERSELY PROPORTIONAL to r, we can say:

t=\frac{k}{r}

Firstly, we have t = 2 hour and r = 40 mph, so we find k:

t=\frac{k}{r}\\2=\frac{k}{40}\\k=2*40\\k=80

Now, secondly, we have r = 45 and k = 80, we need to find t:

t=\frac{80}{45}\\t=\frac{16}{9}

So, it would take  \frac{16}{9}  hours

4 0
3 years ago
Please help thanks<br> Xxxxx
Stells [14]

Answer:

A

Step-by-step explanation:

5 0
3 years ago
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A flagpole is at the top of a building. 300 feet from the base of the building, the angle of elevation of the top of the pole is
Grace [21]

Answer: We can use tangent here to find the length of the flagpole

First, find the length of the building + the flag pole

tan 32 = x/300

x=300tan32=187.460805573

(length of building + flagpole)

find length of building

tan 30 = x/300

x=173.205080757

subtract

187.460805573-173.205080757=14.255724816

round, length of flagpole = 14 feet

7 0
3 years ago
Name a unit of measurement that is about the same size of the weight or mass of 20 staples.
saul85 [17]

Answer:

D

Step-by-step explanation:

7 0
3 years ago
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Which shape must have opposite sides that are parallel and congruent, and diagonals that are perpendicular bisectors of each oth
n200080 [17]

Answer:

Rectangle or square

Step-by-step explanation:

The diagonals are perpendicular bisectors of each other. C) All four angles of the parallelogram are right angles. Congruent diagonals eliminates the rhombus. This leaves the rectangle or the square.

8 0
3 years ago
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