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Mandarinka [93]
3 years ago
7

Help please !! .......

Mathematics
1 answer:
UkoKoshka [18]3 years ago
4 0
The answer is a. congruent - sas
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It takes Sue, Jeff and Todd 4 hours to paint a room together. If it takes Sue 10 hours by herself and Jeff 12 hours by himself,
diamong [38]

The number of time it would take Todd to paint the room alone is 15 hours.

  • Let the Todd's time be t.

<u>Given the following data:</u>

  • Combine time = 4 hours
  • Sue's time = 10 hours
  • Jeff's time = 12 hours

To calculate the number of time it would take Todd to paint the room alone:

How to solve a word problem:

In order to solve this exercise, we would first of all calculate their individual rate and combined rate respectively. Finally, we would add their individual rates together and equate it to the combined rate.

<u>For </u><u>Sue</u><u>:</u>

Rate = \frac{1}{10} \;work/hr

<u>For </u><u>Jeff</u><u>:</u>

Rate = \frac{1}{12} \;work/hr

<u>For </u><u>Todd</u><u>:</u>

Rate = \frac{1}{t} \;work/hr

<u>Combined rate:</u>

Rate = \frac{1}{4} \;work/hr

Adding the individual rates, we have:

\frac{1}{10} +\frac{1}{12} +\frac{1}{t} =\frac{1}{4} \\&#10;\\&#10;

Multiplying all through by 120t, we have:

12t+10t+120=30t\\&#10;\\&#10;22t+120=30t\\&#10;\\&#10;120=30t-22t\\&#10;\\&#10;120=8t\\&#10;\\&#10;t=\frac{120}{8}

t = 15 hours.

Read more on word problems here: brainly.com/question/13170908

5 0
2 years ago
1. The top 1/8 of the runners advance to the finals for the track and field competition. What is the decimal value of the number
Scorpion4ik [409]
1/8=0.125
  
      0.125
    ______
8 I  1.000
     -   8
    ______
         20
     -   16
   _______
           40
     -     40
   _______
             0
7 0
3 years ago
Read 2 more answers
7 squared minus y equals 6 then y equals
vova2212 [387]

Answer:

Y = 43

Step-by-step explanation:

7^2 - y = 6

49 - y = 6

subtract 49

-y = -43

divide by -1

y = 43

6 0
3 years ago
(4m+7n-6p)-(2m-3n-4p)
Vanyuwa [196]

Answer:

2m + 10n - 2p

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Distributive Property

<u>Algebra I</u>

  • Terms

Step-by-step explanation:

<u>Step 1: Define</u>

(4m + 7n - 6p) - (2m - 3n - 4p)

<u>Step 2: Simplify</u>

  1. Distribute negative:                    4m + 7n - 6p - 2m + 3n + 4p
  2. Combine like terms (m):             2m + 7n - 6p + 3n + 4p
  3. Combine like terms (n):              2m + 10n - 6p + 4p
  4. Combine like terms (p):              2m + 10n - 2p
6 0
2 years ago
A sauna has an initial temperature of 80° If the opening to the sauna is left open, and the temperature therefore decreases by 3
ddd [48]

Answer:

71.6°

Step-by-step explanation:

=210s÷60s(1 minutes)

=3.5mins

=3.5mins×3%(=1min)

=10.5%

=100%-10.5%

=89.5%

=89.5%/100×80°

=71.6°

Hope this will help ya!

5 0
3 years ago
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