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astraxan [27]
3 years ago
13

Please help me please i really need help please

Mathematics
1 answer:
elena55 [62]3 years ago
6 0

Answer:

Step-by-step explanation:

V = 3.14 × r² × h

r= 20/2 =10 cm

h = 11 cm

V = 3.14 x10² x 11 = 3454 cm³

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Help<br> Please due now!!!!
Sergeeva-Olga [200]

Answer:

3920

Step-by-step explanation:

(9+11)(14•14)

(20)(196)

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7 0
3 years ago
Read 2 more answers
Help plz:)))I’ll mark u Brainliest
postnew [5]

Answer:

Scale factor = 1.5

Step-by-step explanation:

Formula for the scale factor,

Scale factor = \frac{\text{Measure of one side of the Image}}{\text{Measure of one side of the preimage}}

In this question, image is triangle Y and preimage is triangle X.

Scale factor of X to Y = \frac{15}{10}

                                    = 1.5

Therefore, scale factor = 1.5 is the answer.

5 0
3 years ago
Please help me? :\ :/
4vir4ik [10]
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4 0
3 years ago
The equation of the line CD is (y-3)=-2(x-4). what is the scope of the line perpendicular to line CD
Delicious77 [7]

Answer:

y=-1/2x-5

Step-by-step explanation:

First we need to put (y-3)=2(x-4) in slope intercept form.

we need to do order of operations....

so we need to first do the parenthesis

x*2= 2x

2*-4= -8

y-3=2x-8

add 3 on both sides to isolate y

y= 2x-5

so now we know the y=mx+b form

this is one line...

now we need to find out what line is perpendicular.

Perpendicular lines have opposite reciprocals slopes.

y=-1/2x-5

8 0
3 years ago
A store is having a sale on used video game. Each game cost $12. Write an algebraic expression to represent the cost of buying v
alexandr1967 [171]
The algebraic expression you would write is 12v
8 0
3 years ago
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