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bogdanovich [222]
3 years ago
7

Help me!! i am not good at this virtual algebra stuff

Mathematics
1 answer:
Gekata [30.6K]3 years ago
8 0

The answer is 28

Step-by-step explanation:

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Plz help me answer these
givi [52]

Answer:

Lenne=10 Gilberto=10 Alana=7.50

Step-by-step explanation:

7 0
3 years ago
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Which of the following algebraic expressions correctly represent the phrase fifteen less than twice a number
Vlad1618 [11]

Answer:

15-(2×X)

Step-by-step explanation:

hope this is what you need

8 0
3 years ago
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PLEASE HELP ME!
Olin [163]

Answer:

126

Step-by-step explanation:

14 times 9

7 0
3 years ago
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14. Solve: 3x² + 5x – 12 = 0<br>B. 4-3<br>C. 8, - 18​
VARVARA [1.3K]

Answer:

b

Step-by-step explanation:

The equation:

3

x

2

−

5

x

−

12

=

0

is in the form:

a

x

2

+

b

x

+

c

=

0

with  

a

=

3

,  

b

=

−

5

,  

c

=

−

12

The roots are given by the quadratic formula:

x

=

−

b

±

√

b

2

−

4

a

c

2

a

x

=

5

±

√

(

−

5

)

2

−

4

(

3

)

(

−

12

)

2

(

3

)

x

=

5

±

√

25

+

144

6

x

=

5

±

√

169

6

x

=

5

±

13

6

That is:

x

=

5

+

13

6

=

18

6

=

3

 

or  

 

x

=

5

−

13

6

=

−

8

6

=

−

4

3

7 0
3 years ago
Studies show that a typical giant hummingbird can flap its wings once in 0.08 of a second.
Licemer1 [7]

Answer:

a. 90

b. 360

Step-by-step explanation:

The time taken by humming bird to flap its wings= 0.08 sec

by flying 7.2 seconds a typical giant hummingbird flap its wings \frac{7.2}{0.08} times

= 90 times

Since, A ruby-throated hummingbird can flap its wings 4 times faster than a giant hummingbird, it will flap its wings in every 0.02 sec

so in 7.2 seconds it will flap \frac{7.2}{0.02} times = 360 times

4 0
3 years ago
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