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IceJOKER [234]
3 years ago
8

Solve this quadratic equation using the quadratic formula x^2 + 8x - 5 = 0

Mathematics
1 answer:
kompoz [17]3 years ago
3 0

Answer:

x =  − 4 ± √ 21

Step-by-step explanation:

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It took John 12 hours riding his bike to make the round trip to his uncle's. If he averaged 20 mph out and 30 mph back, how long
notsponge [240]

Answer:

Step-by-step explanation:

Let the time taken by the john to get to his uncle be x.

Let the time taken by the john to get back from his uncle be y.

So,

x+y=12 ------ equation 1

According to the given velocities:

20x=30y

x=3/2y

Put the value x=3/2y in equation 1

3/2y+y =12

3y+2y/2=12

3y+2y=12*2

5y=24

y=24/5

y=4.8h

Now put the value of y in x=3/2y

x=3/2*4.8

x=14.4/2

x=7.2h ....

6 0
3 years ago
Maths! please help! will give brainliest!
Gwar [14]

Answer:

weird shape but.... i would say the answer is... 1=2.14ab

Step-by-step explanation:

8 0
3 years ago
Ethan has 3 pounds of nuts .How many ounces of mixed nuts does Ethan have
kogti [31]
That will be 48 ounces of mixed nuts because 1 pound of nuts is 16 ounces so i did 16 times 3 and that is 48
7 0
3 years ago
I need this one, answer please?
Stolb23 [73]

Answer:

Pair 1.

Step-by-step explanation:

On pair 1, shape A can go into shape B with a rotation.

Pair 2 would be a translation.

Pair 3 would be a reflection across the x-axis.

Pair 4 would be a reflection across the y-axis.

6 0
3 years ago
Read 2 more answers
Help please asap :)))
iVinArrow [24]

Answer:

Step-by-step explanation:

The volume is calculated like:

V= length* hauteur* wide

V= 5* 2 3/4* 10 1/2

V= 5*\frac{11}{4} *\frac{21}{2} =\frac{5*11*21}{4*2} =\frac{1155}{8}=144.375  \\=144 \frac{3}{8} in^{3}

3 0
3 years ago
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