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Alisiya [41]
3 years ago
15

benny bought 9 new baseball trading cards to add to his collection.the next day his dog ate half of his collection. there are no

w only 40 cards left.how many cards did benny start with?
Mathematics
2 answers:
BlackZzzverrR [31]3 years ago
7 0
49, because if he bought 9 you need to add that to 40 to get the whole
Andrei [34K]3 years ago
6 0
Thirty five point five, but you cannot have half a card so you have to round it which gives you thirty six.

Answer= 36
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The sales price is 44. 37 dollars.

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3 years ago
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What is -2/3 - (-1/2)
Studentka2010 [4]

Answer: -1/6

Step-by-step explanation: Start by changing the minus a negative

to plus a positive, so we have -2/3 + 1/2.

Since our denominators of 3 and 2 have no factors in common,

our least common denominator is 3 · 2 or 6.

In order to get a denominator of 6 in each fraction,

we multiply top  and bottom of the first fraction by 2

and top and bottom of the second fraction by 3.

That gives us -4/6 + 3/6 which simplifies to -1/6.

4 0
3 years ago
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What is the 12th term of the sequence: 48,44,40,36...
Anvisha [2.4K]

Answer:

12

Step-by-step explanation:

The sequence starts at 48, and goes down 4 with each term. That means that we just need to subtract 4 from 48 12 times.

Hope that this helps!

4 0
3 years ago
Please help sarie this is the rest of the questions and i need help
Ad libitum [116K]

Well what's the question? I got a buncha graphs and no question!

4 0
3 years ago
Each algorithm is applied to a group of 52 sample problems. The new algorithm completes the sample problems with a mean time of
dem82 [27]

Answer:

Therefore we fail to reject the Null hypothesis H_0

Because the is no sufficient evidence to support the claim of the alternative hypothesis H_a

Step-by-step explanation:

From the question we are told that

Sample size n_1 =52

Mean time 1 \=x_1=24.04\ hours

Mean time 2 \=x_2=24.52\ hours

Standard deviation \partial _1=5.769

Standard deviation \partial _2=5.556

Level of significance 0.05

The null hypothesis is H_o: \mu_1=\mu_2

Alternative hypothesis H_a: \mu_1

Generally the test statistics is mathematically represented as

      Z= \frac{\=x_1-\=x_2}{\sqrt{\frac{\sigma_1^2}{n_1}+\frac{\sigma_2^2}{n_2}}}

     Z= \frac{24.04-24.52}{\sqrt{\frac{5.769^2}{52}+\frac{5.5562^2}{52}}}

     Z= -0.4321583379

     Z= -0.43

From Table the Z-critical value at \alpha =0.05\ is\ -1.6449

Therefore

Zcal> Zcritical

(-0.43)=(-1.645)

Generally we fail to reject the null hypothesis H_0 at \alpha  = 0.05

Therefore we fail to reject theH_0

Because the is no sufficient evidence to support the claim of H_a

5 0
3 years ago
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