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Mumz [18]
3 years ago
12

Denise's cell phone plan is $29.95 per month plus $.10 per minute for each minute over 300 minutes of call time. Denise's cell p

hone bill is $99.95. For how many minutes was she billed?
Mathematics
1 answer:
S_A_V [24]3 years ago
6 0
She was billed for 1000 minutes. If she gets 300 minutes free, then her bill would be $29.95. But her bill was $99.95, so she was billed $70 worth of the minutes over 300 minutes. $70 divided by $0.10 is 700. Seven hundred minutes plus 300 minutes equals 1000 minutes in total.
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a cubiod of demension 56 * 49 * 29 how many small cubes with sides 7cm can be placed in the given cubiod​
malfutka [58]

Answer:

232

Step-by-step explanation:

n *volume of cube = volume of cuboid

n*7*7*7=56*49*29

n=232

3 0
3 years ago
Studies indicate that 10.5% of the US population has diabetes. A producer of medical devices is developing a test for diabetes d
never [62]

Answer:

The answer is "0.95 and 0.5271".

Step-by-step explanation:

p (d) = 0.905 \\\\p( false\  negative)  = 0.05\\\\p(false \ positive ) = 0.10 \\\\

In point a)  

p ( positive diabetes )= 1 - 0.05 = 0.95

In point b)  

p(\frac{d}{+ve}) = \frac{0.105 \times 0.95}{0.105 \times 0.95 +0.895 \times 0.10 }

           =\frac{0.09975}{0.09975+0.0895}\\\\=\frac{0.09975}{0.18925}\\\\= 0.5271

5 0
3 years ago
Please help :)
spin [16.1K]

The ratios 84/105 and 128/160 are proportional

<u>Solution:</u>

Given, two ratios are \frac{84}{105} and \frac{128}{160}

We have to give two different reasons to support the answer.

<em><u>Reason 1:</u></em>

Now, we know that, numerators and denominators should be proportional to be two fractions in proportion.

\text { Then, } \frac{84}{128}=0.65625 \text { and } \frac{105}{160}=0.65625

So numerators and denominators are in proportion, then given two fractions are proportion.

<em><u>Reason 2:</u></em>

Now, values of two fractions must be equal:

\rightarrow \frac{84}{105}=\frac{128}{160} \rightarrow 84 \times 160=105 \times 128 \rightarrow 13440=13440

So, values of two fractions are equal, then they are in proportion.

Hence, the given two fractions are in proportion.

7 0
3 years ago
3/7 as an improper fraction
Aliun [14]

Answer:2 1/7

Step-by-step explanation:divide 3and7 which is 2 remainder of 1 so 2 1/? Keep your bottom number which is a seven so it’s 2 1/7

4 0
4 years ago
Freeeeeeee pointssssss
user100 [1]
1 plus 1 is two. Thank you.
6 0
3 years ago
Read 2 more answers
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