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never [62]
3 years ago
12

mrs tran mowed 1/4 of the lawn. her son mowed 2/5 of it. who mowed more. how much of the lawn still need to be mowed

Mathematics
2 answers:
IRINA_888 [86]3 years ago
6 0
Her son mowed more he mowed 8/20 and she mowed 5/20.
Zina [86]3 years ago
4 0

Answer:

Her son mowed more and 7/20 need to be mowed

Step-by-step explanation:

1/4 x 5 = 5/20 - Mrs Tran

2/5 x 4 = 8/20 - her son

20/20 - 13/20 = 7/20 needs to be finished

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Rewrite in simplest form. 5x3 + 5x2 - 3x - 3x2
vovangra [49]

Answer:

(25)-(3)

Step-by-step explanation:

7 0
2 years ago
1.4 – 5.5 – 1.73 + 1.8 – 1.09<br><br> –5.12<br> –8.72<br> 5.12<br> –1.66
Novay_Z [31]
<span>We'll do two by two,
1.4 – 5.5= -4.1
</span><span>– 1.73 + 1.8= 0.07
Leaving </span><span>– 1.09,

You get </span> 
=-4.1+<span> 0.07- 1.09
=-4.03-1.09
=-5.12</span>
7 0
2 years ago
The veloctiy of sound in air is given by the equation v=20 times the square root of 273+t where v is the velocity in meters per
Nikitich [7]
So we just need to plug in our values and solve
v = 20 \sqrt{273 + t}
we are given v is 369 so we have
369 = 20 \sqrt{273 + x}
now we solve for x.
divide both sides by 20
square both sides
subtract 273 from both sides
369 = 20 \sqrt{273 + x}  \\ 18.45 =  \sqrt{273 + x}  \\ 340.40 = 273 + x \\ x = 67.4
so a temp of about 67 degrees C
5 0
2 years ago
Read 2 more answers
Evaluate the expression if a=2,b=-3,C=-1, and D=4<br><br><br> -2(b^2-5c)
Alenkasestr [34]

\qquad \qquad  \bf \huge\star \:  \:  \large{  \underline{Answer} }  \huge \:  \: \star

  • Equivalent value = -28

\textsf{  \underline{\underline{Steps to solve the problem} }:}

\qquad❖ \:  \sf \: - 2( {b}^{2}  - 5c)

( put the values )

\qquad❖ \:  \sf \: - 2 \{( - 3) {}^{2}  - 5( - 1) \}

\qquad❖ \:  \sf \: - 2(9 -  (- 5))

\qquad❖ \:  \sf \: - 2(9 + 5)

\qquad❖ \:  \sf \: - 2 \times 14

\qquad❖ \:  \sf \: - 28

\qquad \large \sf {Conclusion}  :

  • -2(b² - 5c) = -28

7 0
1 year ago
What are the solutions to x2 - 2x -8=0?
pav-90 [236]
The answer is 2
Add like terms
Add 8 to -8 and the zero
To get 4x=8
Then divide 4 and 8 by 4
To get x=2
4 0
3 years ago
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