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weeeeeb [17]
2 years ago
6

Mark can clean a house in 7 hours. When he cleans the same house with Wendy, it takes them 3 hours to clean the house. How long

would it take Wendy to clean the house by herself? Write your answer as a decimal.
Mathematics
1 answer:
vodka [1.7K]2 years ago
7 0
( 4 )hours for Wendy by herself because if it takes mark 7 hours by him self and 3 with Wendy, it will take Wendy 4 hours because 7 from 3 is 4
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Find the distance CD rounded to<br> the nearest tenth.<br> C = (7,-4) and D = (-8,-5)<br> CD = [?]
quester [9]

Answer:

CD= 15.03

Step-by-step explanation:

x1=7, x2= -8

y1=-4, y2=-5

distance CD= √(x2- x1) 2+ (y2-y1)2

= √( -8-7)2 + [-5-(-4)]2

= √(15)2+ (-5+4)2

= √225+ (1)2

= √225+1

= √226

= 15.03

7 0
2 years ago
23 + 8m + 4n - 5m - 27​
mylen [45]

Answer:

-4 + 3m + 4n

Step-by-step explanation:

In this question, you are combining like terms, meaning doing equations to numbers that fit with only each other.

<u>So we should start on the number without variables:</u>

23 and 27

<u>Match them up together and you should find your first equation:</u>

23 - 7

==> -4

So we should have  -4  +  8m  +  4n  -  5m

Now we should combine the numbers with the variable of m:

8m and 5m

<u>Match them up together and you should find your first equation:</u>

<u></u>

8m - 5m

==> 3m

So we should now have -4  + 3m  + 4n

<u></u>

<u>Since there are no other variables of n, we are all done:</u>

<u>-4  + 3m  + 4n  is  your  final  answer </u>

4 0
3 years ago
Complete the solution of the equation. find the value of y when x equals 1. <br><br>9x +7y= -12​
Taya2010 [7]

Answer:

y=-3

Step-by-step explanation:

Given Equation:  

                            9x +7y=-12\\             y=?       at    x= 1

Putting the given value of 'x' in the equation:

                            9(1) +7y=-12\\\\9+7y=-12\\\\7y=-12-9\\\\7y=-21\\\\y=-\frac{21}{7} \\y=-3

At x=1, the value of y is y=-3

6 0
3 years ago
two bicycle riders start a race at the same time. the function f(x) and g(x) give the distance in miles that each rider has trav
iragen [17]

Answer:

https://jbarrueta.weebly.com/uploads/5/3/2/9/53297595/lesson2.2.2.pdf

Step-by-step explanation:

here's a link

4 0
3 years ago
What's the answer of the this-48.3÷(-7)​
goblinko [34]

the answer is 6.9.

When you divide a negative by a negative it is a positive

4 0
3 years ago
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