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zheka24 [161]
3 years ago
13

Using the quadratic formula I can't remember what to do next ​

Mathematics
1 answer:
Advocard [28]3 years ago
4 0

Answer: you square root it.

5r^2/5 = 80/5 =16

Sqr root of r^2=Sqr root of 16

r=4

Step-by-step explanation:

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Mrs. Smith earns 3500 a month she gives 280 a month savings is what precent of her income <br>​
bogdanovich [222]

Answer:8%

Step-by-step explanation:

8% of her income because I did

280

-----

3500

=

X

------

100 ( Sorry if I'm wrong <3 )

4 0
3 years ago
A girl ran from her home to a store at the rate of 6 mph, and she walked back home at the rate of 4 mph. if it took 15 minutes f
viva [34]

Home is 0.6 miles away from the store

How to solve such time related questions?

The key concept for solving such questions is the relationship between speed, distance and time.

The relationship between them is Distance = Speed x Time

Given:-

Total time taken by girl to complete the trip = 15 minutes = \frac{1}{4} hours

Speed while riding going = 6 miles per hour

Speed while coming back = 4 miles per hour

Total time taken by girl  =

Time taken while going +   Time taken while coming back      - (1)

  Let x be distance from home to store

       \frac{x}{6} =  Time taken while going

\frac{x}{4} = Time taken while coming back

    Substituting in (1) we get

      \frac{1}{4} =  \frac{x}{6} + \frac{x}{4}

      \frac{1}{4} =  \frac{2x + 3x}{12}

       \frac{1}{4} =  \frac{5x}{12}

      x= \frac{12}{20}

    x = 0.6 miles

Thus home is 0.6 miles away from the store

Learn more about time related  here :

brainly.com/question/12759408

#SPJ4

6 0
1 year ago
What is the slope-intercept from equation of the line that passes through (5,7)and(8,22)?
elena55 [62]

y=5X+32

I hope this helps!

6 0
2 years ago
Pls answer cggjtzajyrzmkyrkr
tia_tia [17]

Answer: D

Step-by-step explanation:

You save the most money with option D. Not in the long run though

4 0
3 years ago
Read 2 more answers
Isilah persegi ajaib berikut agar setiap, kolom, baris, diagonal hasilnya sama
Firdavs [7]
[5|4|3]
[3|2|1]
[1|0|-1]

Aku tahu indonesia. Halo nama saya sinthujan
8 0
3 years ago
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