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cupoosta [38]
3 years ago
7

Pedro and Carmela are cleaning their kitchen. It takes Pedro 3 hours to clean the kitchen by himself, while Carmela can clean th

e kitchen in 2
hours. Which equation can be used to calculate how long it will take them to clean the kitchen if they work together?
o * + = 1
31 + 2 = 1
Mathematics
1 answer:
nlexa [21]3 years ago
6 0

Answer:o * + = 1

Step-by-step explanation:

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saveliy_v [14]

Answer:

1st Picture: d = -16

2nd Picture: g = -13.8

Step-by-step explanation:

1st Picture: Divide both sides by -11 to balance both sides and get the answer.

2nd Picture: Subtract 1.2 from both sides.

8 0
3 years ago
Read 2 more answers
Please solve this question ??????​
Juliette [100K]
So basically you do this ....


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7 0
3 years ago
) Make a scatter plot of mice survival rate (response) against aspartame concentration (explanatory) and add the regression line
Mashutka [201]

Answer & Step-by-step explanation:

Regression studies the relationship between independent / explanatory  (causal) variable, dependent / response (effected) variable. Scatter plot is a diagrammatic representation of regression.

Aspartame Concentration, being a toxic substance, is likely to have negative regression relationship with mice survival rate. It implies that higher concentration leads to lower mice survival, & lower concentration leads to higher mice survival.

The relationship can be strong or weak, depicted by 'r' magnitude, depending upon the intensity of concentration impact on survival. If more percent of the variation in survival rate can be explained by variations in  concentrations, regression coefficient is high. If less percent of the variation in  survival rate can be explained by variations in concentrations, regression coefficient is low

4 0
3 years ago
What is the surface are of the cylinder pictured below ​
Elina [12.6K]

Surface area of the cylinder is 294π in².

Step-by-step explanation:

  • Step 1: Surface area of a cylinder = 2πrh + 2πr² Here, r = 7 in, h = 14 in

⇒ Surface Area = 2 × π × 7 × 14 + 2 × π × 7 × 7

                          = π (196 + 98) = 294π in²

4 0
4 years ago
Peyton wrote this expression to describe the amount he paid for each sandwich that costs the same amount. Which situation could
Leno4ka [110]
I think it is d because it would be 15 x b = 60. Hope I got this right
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3 years ago
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