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Virty [35]
3 years ago
5

Help me please): I’m stuck

Mathematics
2 answers:
sineoko [7]3 years ago
6 0
Pi x 1squared = 3.14 cm
Scorpion4ik [409]3 years ago
5 0

Answer:

A=3.14 cm^2

Step-by-step explanation:

In order to calculate the area of the circle:

$A = \pi r^2  $

$A = \pi 1^2  $

$A = \pi  $

A=3.14 cm^2

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Which complex number has an absolute value of 5?<br> -3 + 4i<br> 2 +3i<br> 7-2i<br> 9 +4i
fiasKO [112]

Answer:

-3+4i

Step-by-step explanation:

on a graph the complex number is (-3,4) The magnitude is -3^2+4^2=c^2

c=5 when solved

6 0
3 years ago
Read 2 more answers
A statement with the word "per" is always a unit rate. true/false​
11111nata11111 [884]

Answer:

True

Step-by-step explanation:

The definition of per is for each. Per is used with units to express a rate.

3 0
2 years ago
Gretchen has a set of blocks of heights 1, 2, and 4-centimeters. Imagine stacking the blocks one on top of the other to make a t
notsponge [240]

Answer:

t_{n}=t_{n-1}+t_{n-2} +t_{n-4}

Step-by-step explanation:

t_{n}=multiple ways to climb a tower

When n = 1,

tower= 1 cm  

t_{1}= 1

When n = 2,

tower =2 cm   

t_{2}= 2

When n = 3,

tower = 3 cm

it can be build if we use three 1 cm blocks

t_{3} = 3

When n = 4,

tower= 4 cm

it can be build if we use four 1 cm blocks

t_{4} = 6

When n > 5

tower height > 4 cm

so we can use 1 cm, 2 cm and 4 cm blocks

so in that case if our last move is 1 cm block then t_{n-1} will be

n —1 cm

if our last move is 2 cm block then t_{n-2} will be

n —2 cm

if our last move is 4 cm block then t_{n-4} will be

n —4 cm

 

t_{n}=t_{n-1}+t_{n-2} +t_{n-4}

4 0
3 years ago
Read 2 more answers
HELP PLS Last year 15 students earned an A in math class. If I had 128 students, what percent of students did NOT earn an A?
BabaBlast [244]

Answer:

88%

Step-by-step explanation:

128-15=113

113/128=.882

88%

8 0
2 years ago
I need help Pls help with both
Gwar [14]

Answer:

the first one is 84

Step-by-step explanation:

subtract 145-61 then you get 84for the missing angle.

7 0
3 years ago
Read 2 more answers
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