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3 years ago

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Tikma finished her necklaces at 11:25 am It took her 15 min to pick out her beads 55 min to string them and 10 min tho put the c

lasp on when did she start?

1 answer:

Semmy [17]3 years ago

8 0

Answer:

10:05 AM

Step-by-step explanation:

11:25-00:15=11:10

11:10-00:55=10:15

10:15-00:10=10:05

<u>10:05 AM</u>

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Geometry help on questions 1,2,3

Semmy [17]

The exact value of d is $44 \sqrt{2}$

a. 62
b. 62.2
c. 62.23

4 0

3 years ago

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!

olga nikolaevna [1]

<h3>Answer: 1.15</h3>

==============================================================

Work Shown:

QR = 73

QP = 55

PR = x

Pythagorean Theorem

a^2 + b^2 = c^2

(QP)^2 + (PR)^2 = (QR)^2

(55)^2 + (x)^2 = (73)^2

3025 + x^2 = 5329

x^2 = 5329-3025

x^2 = 2304

x = sqrt(2304)

x = 48

PR = 48

----------

tan(angle) = opposite/adjacent

tan(R) = QP/PR

tan(R) = 55/48

tan(R) = 1.1458333 approximately

tan(R) = 1.15

8 0

4 years ago

Read 2 more answers

A large tank is filled to capacity with 600 gallons of pure water. brine containing 4 pounds of salt per gallon is pumped into t

nignag [31]

If $A(t)$ is the amount of salt in the tank at time $t$ , then the rate at which the amount of salt in the tank changes is given by

$\dfrac{\mathrm dA(t)}{\mathrm dt}=\dfrac{4\text{ lbs}}{1\text{ gal}}\dfrac{6\text{ gal}}{1\text{ min}}-\dfrac{A(t)\text{ lbs}}{600\text{ gal}}\dfrac{6\text{ gal}}{1\text{ min}}$
$\dfrac{\mathrm dA}{\mathrm dt}=24\dfrac{\text{lb}}{\text{min}}-\dfrac{A(t)}{100}\dfrac{\text{lb}}{\text{min}}$

Let's drop the units for now. We have

$\dfrac{\mathrm dA(t)}{\mathrm dt}+\dfrac{A(t)}{100}=24$
$e^{t/100}\dfrac{\mathrm dA(t)}{\mathrm dt}+e^{t/100}\dfrac{A(t)}{100}=24e^{t/100}$
$\dfrac{\mathrm d}{\mathrm dt}\left[e^{t/100}A(t)\right]=24e^{t/100}$
$e^{t/100}A(t)=\displaystyle24\int e^{t/100}\,\mathrm dt$
$e^{t/100}A(t)=2400e^{t/100}+C$
$A(t)=2400+Ce^{-t/100}$

We're given that the water is pure at the start, so $A(0)=0$ , giving

$A(0)=0=2400+Ce^{-0/100}\implies C=-2400$

So the amount of salt in the tank (in lbs) at time $t$ is

$A(t)=2400\left(1-e^{-t/100}\right)$

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3 years ago

Last week f40 fifth graders went on a field trip to the science museum

Xelga [282]

8 out of 40 fifth graders went to see the lab animal presentation. This can be written as this expression:

$\frac{8}{40}$

Find the greatest common factor of 8 and 40:

Factors of 8: 1, 2, 4, 8
Factors of 40: 1, 2, 4, 5, 8, 10, 20, 40

Therefore the greatest common factor is 8. Divide both the numerator and the denominator by 8.

$\frac{8}{40} = \frac{8/8}{40/8} = \frac{1}{5}$

Therefore the fractional part is $\frac{1}{5}$ .

To get the percentage, you need to get the denominator to a value of 100.

To do so, you need to find the value to multiply both the numerator and denominator by to achieve this.

To get this value, you can divide 100 by the denominator of the fractional value.

$100 / 5 = 20$

Then you can multiply both the numerator and denominator by 20:

$\frac{1}{5} = \frac{1 * 20}{5 * 20} = \frac{20}{100}$

From here, the numerator will state the percentage:

$20\%$

Hope this helps :)

8 0

3 years ago

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A regular polygon is always convex.<br> False<br> True

notka56 [123]

Answer:

True

Step-by-step explanation:

In a convex polygon, each interior angle measures less than 180 degrees. A triangle is always convex and regular polygons are always convex.

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3 years ago

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