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3 years ago

Please help I will reward brailiest

Mathematics

2 answers:

WINSTONCH [101]3 years ago

8 0

Answer: 1. HJ 2. DH 3. JK 4. KF 5. FK 6. KJ 7. JH 8. HD

Step-by-step explanation: plz mark me brainliest. acute angles are under 90 degrees

sergiy2304 [10]3 years ago

7 0

Answer:

J is the possible answer

Step-by-step explanation:

You might be interested in

A tank initially contains a solution of 10 pounds of salt in 60 gallons of water. Water with 1/2 pound of salt per gallon is add

RUDIKE [14]

Salt flows into the tank at a rate of

(1/2 lb/gal) * (6 gal/min) = 3 lb/min

and flows out at a rate of

(Q(t)/60 lb/gal) * (6 gal/min) = 6Q(t) lb/min

The net rate of change of the amount of salt in the tank at time $t$ is then governed by

$\dfrac{\mathrm dQ}{\mathrm dt}=3-6Q$

Solve for $Q$ :

$\dfrac{\mathrm dQ}{\mathrm dt}+6Q=3$

$e^{6t}\dfrac{\mathrm dQ}{\mathrm dt}+6e^{6t}Q=3e^{6t}$

$\dfrac{\mathrm d}{\mathrm dt}[e^{6t}Q]=3e^{6t}$

$e^{6t}Q=\dfrac{e^{6t}}2+C$

$\implies Q=\dfrac12+Ce^{-6t}$

The tank starts with 10 lb of salt, so that Q(0) = 10. This gives us

$10=\dfrac12+C\implies C=\dfrac{19}2$

so that the amount of salt in the tank at time $t$ is given by

$\boxed{Q(t)=\dfrac{1+19e^{-6t}}2}$

4 0

3 years ago

PLEASE answer this question

4vir4ik [10]

Answer:

85°

Step-by-step explanation:

Just subtract 50 from 135.

135 - 50 = 85

7 0

3 years ago

Suppose you live 4.4 miles from a hill. From your home you see a plane directly above the hill. Your angle of elevation to the p

IrinaVladis [17]

█ Explanation █

Let's call the missing altitude 'x'.

✦ To find the plane's altitude, find the tan of 30 degrees. The side opposite is going to be x, while the side adjacent is going to be 4.4 miles.
✦ $Tan(30)= \frac{x}{4.4}$
✦ $5.7735= \frac{x}{4.4}$
✦ $x=4.4*.57735$
✦ $x=4.4*.55735$
✦ $x=2.54 mi$
✦ We usually write altitude in feet.

Answer: 2.54 * 5280 ~ 13,400 ft

Hope that helps! ★ If you have further questions about this question or need more help, feel free to comment below or leave me a PM. -UnicornFudge aka Nadia

4 0

3 years ago

You have $3000 to enclose a rectangular piece of property with a fence. The fence costs $9 per foot. A scale drawing of the prop

son4ous [18]

Answer:

Step-by-step explanation:

C=9P

P=2(L+W)

C=18(L+W)

C=18(8(12)+7(12))

C=18(96+84)

C=18(180)

C=$3240

So you do not have enough money to enclose the property.

8 0

3 years ago

They crawled in until 51,416 had

tino4ka555 [31]

Step-by-step explanation:

do 51,416×4

ans is 245,664

8 0

3 years ago