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BaLLatris [955]
4 years ago
6

the recommended heart rate for weight management exercise and improving cardio fitness, i beats per minute, depends on a person'

s age and can be represented by the expression 0.7(220-a)
Mathematics
1 answer:
My name is Ann [436]4 years ago
6 0
Hang on for a sec....
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Klein stated before 7:10 meg inlinewhich shows this distance written as a decimal
vfiekz [6]
Since decimals have places in 10 100 and 1000 you need a denominator with those number but since you already have a 10 you take the 7 and add a 0. in front so the answer is 0.7


5 0
4 years ago
HELPPPP!!!!!
Vesna [10]
The awnser is (3,0)
8 0
3 years ago
A vendor at a street fair sells popcorn in cones, all of height 9 inches. The
Tatiana [17]

Answer:

The sharing cone holds about 9 times more popcorn than the skinny cone.

Step-by-step explanation:

The volume of a cone is given by the following formula:

V = \frac{\pi r^{2}h}{3}

In which r is the radius and h is the height.

Two cones:

Both have the same height.

The sharing-size cone has 3 times the radius of the skinny-size cone.

Skinny:

radius r, height h. So

V_{sk} = \frac{\pi r^{2}h}{3}

Sharing size:

radius 3r, height h. So

V_{sh} = \frac{\pi (3r)^{2}h}{3} = \frac{9\pi r^{2}h}{3} = 3\pi r^{2}h

About how many times more popcorn does the sharing cone hold than the skinny cone?

r = \frac{V_{sh}}{V_{sk}} = \frac{3\pi r^{2}h}{\frac{\pi r^{2}h}{3}} = \frac{3*3\pi r^{2}h}{\pi r^{2}h} = 9

The sharing cone holds about 9 times more popcorn than the skinny cone.

3 0
3 years ago
I have a box of chocolates with white, milk and dark chocolate in. The ratio of white to not white is 3:4. The ratio of not dark
Scrat [10]

white : milk : dark

w : m : d

The ratio of white to not white is 3:4

w : (m+d) = 3:4

The ratio of not dark to dark is 17:4.

(w+m) : d = 17:4

---------

We treat the colons as fraction bars and cross multiply.

4w = 3(m+d) = 3m + 3d

4w + 4m = 17 d

Subtracting,

4m = 17d - (3m+3d) = 14d - 3m

7m = 14 d

m/d = 14/7

m:d = 2:1

Since w:(m+d)=3:4 let's make m+d a multiple of 4.

m:d = 8:4

w : (m+d) = 3:4 = 9:12

w:m:d = 9:8:4

Answer: 9:8:4

Check:

white to non white 9 to 8+4=12 = 3:4, good

non dark to dark (9+8):4=17:4, good


8 0
3 years ago
Please help it’s due in 20 mins would it be A B C or D
KIM [24]
Option C is correct

x < 1
8 0
3 years ago
Read 2 more answers
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