Mathematics, 19.03.2020 09:34 tashkynmurat

1. Delia brushes her teeth 1/6 hour each day.
Units of Time
1 week= 7 days
1 hour = 60 minutes

Part A
Write and solve an equation to find how
many hours Delia brushes her teeth in
1 week.

Part B
to find how
many minutes Delia brushes her teeth in
1 week.

Answers: 3

Show answers

Answers

Answer from: sydc1215

PART A: 28 hours, PART B: 16800 minutes

Step-by-step explanation:

Delia Brushes her teeth = 1/6 hour

PART A

Total Week= 1 week

Total number of days in a week= 7 days

Total number of hours in a day= 24 hours

Total number of hours in a week= 24× 7 hours

Total number of hours in a week= 168 hours

Number of hours that Delia brushes her teeth = $\frac{1}{6}$ × 168 hours

Number of hours that Delia brushes her teeth = 28 hours

Hence, the correct answer is 28 hours

PART B

Total number of days in a week= 7 days

Total number of hours in a week= 168 hours

Total number of minutes in a week= 168 × 60

Total number of hours in a week= 100800 Minutes

Number of minutes that Delia brushes her teeth = $\frac{1}{6}$ × 100800

Number of hours that Delia brushes her teeth = 16800 minutes

Hence, the correct answer is 16800 minutes

Answer from: Quest

associative property hopes this ! : )

step-by-step explanation:

Answer from: Quest

the system of inequity is

$y\leq -x+4$

$3y> x$

step-by-step explanation:

from the given graph it is noticed that we have two related lines. one is solid and another is dashed.

if a line passing through two points, then the equation of line is

$y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)$

the solid line passing through the points (0,4) and (4,0).

$y-4=\frac{0-4}{4-0}(x-0)$

$y=-x+4$

the related equation of solid line is $y=-x+4$ .

similarly, find the related equation of dashed line. the dashed liune passing through the points (0,0) and (3,1).

$y-0=\frac{0-1}{3-0}(x-0)$

$3y=x$

the related equation of dashed line is $3y=x$

from the given graph it is noticed that the point (0,1) lies on the shaded region, therefore the point (0,1) must be satisfied by the related equations.

check the related equations by the point (0,1).

$1=-0+4$

$1=4$

this statement is true if the sign of inequality is < instead of equality. since it is an solid line therefore the sign of inequality will be $\leq$ . the required inequality is

$y\leq -x+4$

similarly, check the second related equation.

$3(1)=0$

it is a dashed line, so this statement is true if the sign of inequality is > . the required inequality is

$3y> x$

15 points write a system of inequalities to represent the shaded portion of the graph

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1. Delia brushes her teeth 1/6 hour each day.
Units of Time
1 week= 7 days
1 hour = 6...

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