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Hunter-Best [27]

2 years ago

14

Kara knitted 1/5 of the cap in the morning. Bu evening, she had knitted 7/10 of the cap. How much of the cap she knitted during

the afternoon?

1 answer:

nadya68 [22]2 years ago

6 0

Convert 1/5 to 2/10 and then 7/10 minus 2/10 is 5/10 which is equivalent to 1/2. Ask anytime;)

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These dot plots show hourly earnings for a sample of workers in two

mart [117]

The answer to this question is option C

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3 years ago

Which show the factored form of x^2-12x-45

slavikrds [6]

Answer:

$x^{2} -12x-45\\=(x-15)(x+3)$

Step-by-step explanation:

6 0

3 years ago

A detective finds a victim of murder at 9 am. At that time, the temperature of the body is 90.3 degrees F. One hour later, the b

LekaFEV [45]

Answer:

Step-by-step explanation:

Given

at 9 am temperature of the body is $90.3^{\circ}F$

1 hr later temperature $89^{\circ}F$

Temperature of room $T=68^{\circ}F$

According to newtons law

$\frac{\mathrm{d} T}{\mathrm{d} t}=-k\left ( T-T_{room}\right )$

$\frac{\mathrm{d} T}{\mathrm{d} t}=-k\left ( T-68\right )$

$\frac{dT}{T-68}=-kdt$

Integrating

$=\int \frac{dT}{T-68}=-kdt$

$\ln |T-68|=-kt+c$

$T-68=Ae^{-kt}$

Now at 9 am i.e. t=0,

$90.3=A+68$

$A=22.3$

At 10 am i.e. t=1 hr T=89

$89-68=22.3e^{-k}$

$e^{-k}=21$

$k=0.06006$

Temperature of Normal human body is $T=98.6 ^{\circ}F$

$98.6-68=e^{-0.06006t}$

$30.6=e^{-0.06006t}$

Taking log both sides

$t=-5.27$

i.e. 5 hr and 16.2 min

i.e. victim murdered at 3 am and 43.8 min

7 0

3 years ago

What is Increase 48 by 1/2

antoniya [11.8K]

Answer:

50% percentage increase = 72

48 + 1/2 = 48.5

Step-by-step explanation:

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3 years ago

Margaret [11]

Answer:

The answer to this question is

Angle at C is 35

Angle at D is 81

Angle at E is 64

because y=6

8 0

2 years ago

Read 2 more answers