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navik [9.2K]
4 years ago
13

Henry solve a certain number of algebra problems in an hour, but his older brother Frank solved 3 times as many, together they s

olve 60.
How many was solved be each?
Mathematics
1 answer:
Musya8 [376]4 years ago
4 0
Start by writing out the equation of this.
60=x+(3x)
60= 4x
----  -----
 4     4
x=15
Henry solves 15, and Frank solves 45.
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3x - 3 = 15 <br>ASAP.........​
bagirrra123 [75]

Answer:

x = 6

Step-by-step explanation:

3x - 3 = 15

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3x = 18

x = 18/3

x = 6

hope it helps!

8 0
3 years ago
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3 0
3 years ago
Convert 2000 ft./min. to miles per hour round to the nearest 10th
Serggg [28]

Answer:

The conversion of 2000 ft per min into miles per hour is 2.268 miles per hour .

Step-by-step explanation:

Given as :

The speed = s = 2000 ft per min

Now, ∵ 5280 feet = 1 miles

so, 1 feet = \dfrac{1}{5280} miles

∴ 2000 feet =  \dfrac{1}{5280} × 2000 miles

i.e 2000 feet = 0.378 miles

<u>Again</u>

∵ 1 minute = \dfrac{1}{60} hour

So, The speed in miles per hour

s = \dfrac{distance}{time}

∴ s = \frac{0.378}{\frac{1}{60}}

i.e s = 2.268 miles per hour

Hence, The conversion of 2000 ft per min into miles per hour is 2.268 miles per hour . answer

8 0
3 years ago
Find the measure of the reference angle for an 11 radian<br> radian angle.
Vesnalui [34]

Answer:

  about 1.56637 radians ≈ 89.746°

Step-by-step explanation:

The reference angle in radians can be found by the formula ...

  ref angle = min(mod(θ, π), π -mod(θ, π))

Equivalently, it is ...

  ref angle = min(ceiling(θ/π) -θ/π, θ/π -floor(θ/π))×π

<h3>Application</h3>

When we divide 11 radians by π, the result is about 3.501409. The fractional part of this quotient is more than 1/2, so the reference angle will be ...

  ref angle = (1 -0.501409)π radians ≈ 1.56637 radians ≈ 89.746°

__

<em>Additional comment</em>

For calculations such as this, you need to use the most accurate value of pi available. The approximations 22/7 or 3.14 are not sufficiently accurate to give good results.

4 0
2 years ago
Which number is between 6 1/8 and 64 squared?
lesya [120]

Answer:

Do you have a photo or picture of this question, I don't want to give you the incorrect answer because something was missing.

7 0
3 years ago
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