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Marat540 [252]
3 years ago
12

Multiply and simplify if possible

Mathematics
1 answer:
Natalka [10]3 years ago
6 0

Answer:

a

Step-by-step explanation:

i think its correct

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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
Test worth 70 points test score of 90%
diamong [38]
To calculate how many points this person got, take 90% of the total:

0.9(70) = 63

A test score of 90% is 63 points out of 70.
3 0
3 years ago
Read 2 more answers
Can someone plz help? Only have a hour...I'll make crown the best and triple the points!!!
kykrilka [37]

Answer:

x= 3.57

Step-by-step explanation:

32 ( x + 2.5) = 114.24

32* x + 32* 2.5= 114.24

32x + 80= 114.24

        -80      -80

32x= 114.24

/ 32    /32

x= 3.57

for the part that says convince me, we can use the eqution

/= divide

8 0
3 years ago
Megan is deciding when she needs to leave for school. If it typically takes her 15 minutes to walk to school, which is a reasona
Scrat [10]

Answer:

About 7:45

Step-by-step explanation:

7:40 OR 7:45 because sometimes the traffic light takes a while but 7:45 is best.

8 0
3 years ago
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-[98 + (-67) - (32) + (-12) - 5]<br> cual es el resultado?<br> ayuda
Vaselesa [24]

Answer: = 18

Espero que esto te ayude.

5 0
2 years ago
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