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3 years ago

There are two water tanks, Tank #1 fills into Tank #2.

Mathematics

1 answer:

cricket20 [7]3 years ago

5 0

Answer:

35 minutes

Step-by-step explanation:

The total amount of water is 200 +60 = 260 gallons. The two tanks will have equal amounts when each has half that, or 130 gallons.

If the volume in tank 2 is increasing at 2 gallons per minute, it will increase by 70 gallons from 60 gallons to 130 gallons in 70/2 = 35 minutes.

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Prove that : cos10° - sin10° / sin10° + cos10° = tan35°

Digiron [165]

Step-by-step explanation:

(cos 10° − sin 10°) / (cos 10° + sin 10°)

Rewrite 10° as 45° − 35°.

(cos(45° − 35°) − sin(45° − 35°)) / (cos(45° − 35°) + sin(45° − 35°))

Use angle difference formulas.

(cos 45° cos 35° + sin 45° sin 35° − sin 45° cos 35° + cos 45° sin 35°) / (cos 45° cos 35° + sin 45° sin 35° + sin 45° cos 35° − cos 45° sin 35°)

sin 45° = cos 45°, so dividing:

(cos 35° + sin 35° − cos 35° + sin 35°) / (cos 35° + sin 35° + cos 35° − sin 35°)

Combining like terms:

(2 sin 35°) / (2 cos 35°)

Dividing:

tan 35°

3 0

3 years ago

Place the following in order from least to greatest. 8,000,000 mm, 5 km, 7000,000 cm, 6,000 m

Nutka1998 [239]

Answer: 5km, 6000m, 8,000,000 mm, 7000000 cm

Step-by-step explanation:

Note that:

1km = 1,000,000mm

1m = 1000mm

1cm = 10mm

Therefore,

5 km = 5 × 1,000,000mm = 5,000,000mm

7000,000 cm = 7,000,000 × 10 = 70,000,000mm

6,000 m = 6000 × 1000 = 6,000,000mm

Therefore, from the least to the greatest will be:

5km, 6000m, 8,000,000 mm, 7000000 cm

5 0

3 years ago

What is the measure of ABD?

Lostsunrise [7]

Answer:

try d or c

Step-by-step explanation:

3 0

3 years ago

What is angle B? 1. 65° 2. 55° 3. 35° 4. 90°

vfiekz [6]

Answer:

22°

Step-by-step explanation:

what you do is you take the angles 35° and 90°

You add them up, that would be 125°

the actual equation would be

$35+90=180$

$125=180$

$-125$

------------------

∠ B= 22°

Hope this helps!

Reason this is wrong is i didn't notice the 10 cm

6 0

3 years ago

WILL MARK BRAINLIEST! Bill is in a class of 15 boys and 35 girls. 40% of the students in the class take the bus to school. How m

Studentka2010 [4]

Answer:

30 students

Step-by-step explanation:

all students = girls+boys

all students= 15+35=50

40% of 50= 20

50-20=30

30 students didn't take the bus to school

4 0

3 years ago

Read 2 more answers