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Gala2k [10]
3 years ago
12

Jane can complete a sales route​ by herself in 4 hours. Dave can do the same job in 7 hours. How long will it take them to do it

working together?
Mathematics
1 answer:
Nataliya [291]3 years ago
4 0
T/4+t/7=1
28(t/4+t/7)=1
7t+4t=28
11t=28
t=28/11
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Please help me with this !!! Thank you
puteri [66]

Answer:

messages me i will explain how to solve if i can

8 0
3 years ago
Determine the type and number of solutions of 4x^2-5x+1=0.
Arlecino [84]
<span>4x² - 5x + 1 = 0
a = 4; b = - 5, c = 1
</span>Δ = b² - 4.a.c
Δ = (-5)² - 4.4.1
Δ = 25 - 16
Δ = 9
<span>
x = - b </span>± √Δ / 2.a
x =  \frac{-5\± \sqrt{9} }{2*4}
x =  \frac{-5\±3}{8}
x' =  \frac{-5-3}{8} =  \frac{-8}{8} = -1
x' = \frac{-5+3}{8} = \frac{-2}{8} (\div2) = \frac{-1}{4}


A. Two real solutions (x' = -1 and x'' = -1/4)
4 0
3 years ago
Multiple choice question: A square mosaic is made of small glass squares. If there are 196 small squares
Anni [7]

Answer:

14 squares

Step-by-step explanation:

1. We know if the mosaic is a square shape, all sides are the same length and consist of the same amount of squares

2. Area is L×W, so in this case A×A=196

3. We can test this by replacing A with 14 and seeing if the answer is correct.

4. 14×14=196 is true

This can also be done by finding the square root of 196.

3 0
3 years ago
Pls give an explanation??
MatroZZZ [7]

Answer:

answer is none since its not possible to do

Step-by-step explanation:

6 0
3 years ago
How do I find the measurements for the missing angles?
erastovalidia [21]

Answer:

I DONT KNOW IM VERY SORRY CAN JUST PLEASE GIVE ME 5 STARS I WOULD APPRECIATE IT VERY MUCH...

Step-by-step explanation:

5 0
3 years ago
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