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Ostrovityanka [42]
3 years ago
7

Which one is false ????

Mathematics
1 answer:
fenix001 [56]3 years ago
4 0

Answer:

b

Step-by-step explanation:

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Whats the answer for this <br> 4b²+20b+25
WITCHER [35]
4b²+20b+25=0

Divide everything by 4 

b²+5b+ 6.25=0 

use the quadratic formula 
x= (-b+ or - √b²-4ac) /2a
x= (-5 + or - √5²-4*1*6.25) /2(1)
x= -5/2 so
in this case, b= -5/2

7 0
3 years ago
Question 10
Nastasia [14]

Answer:

Step-by-step explanation:

The rate of change, slope, m is

m=(y2-y1)/(x2-x1), we have points (4,5) and (21,39) so

m=(39-5)/(21-4)

m=34/17

m=2

So the rate of change is 2

7 0
2 years ago
10% of 65 pls help and explain the steps to get total answer​
sergij07 [2.7K]
10% of 65
Of means multiply
=0.1 x 65
=6.5

Or you can use another way which is (part/whole) *(percent/100)

Whole=65
Percent=10
And part(part of 65)=unknown

(X/65)* (10/100)
Cross multiply
x= 6.5

So 10% of 65 is 6.5
5 0
2 years ago
Ten times a number increased by eighty four equals 194. what is the number
steposvetlana [31]

Answer: x = 11

Step-by-step explanation:

10x+84=194

10x = "10 times a number"

+84 = "increased by eighty four"

=194 = "equals 194"

10x+84=194

Subtract 84

10x = 110

Divide by 10

x = 11

<em>Hope it helps <3</em>

4 0
3 years ago
Read 2 more answers
Find the volume of a cylinder below . The formula for the volume of a cylinder is . The radius of the circle is represented by r
lapo4ka [179]

Answer:

The volume of the cylinder  V =  942 cm³      

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given that the graph

The height of the cylinder (h) = 12cm

The diameter of the cylinder d = 10cm

The radius of the cylinder

                              d = 2r

                             r = \frac{10}{2}

                             r = 5 cm

<u><em>Step(ii):-</em></u>

The Volume of the cylinder

     V = π r² h

     V = π (5)²(12)

     V = 300π cubic centimeter

     V = 300 × 3.14

    V = 942 cm³

<u><em>Final answer:-</em></u>

Volume of the cylinder  V =  942 cm³

     

3 0
2 years ago
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