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3 years ago

Ginny buys 7 magazines for 2.80 how much does 1 cost? How much does do 5 magazine cost?

Mathematics

1 answer:

saw5 [17]3 years ago

3 0

Answer:

one costs 0.40 and 5 cost 2.00

Step-by-step explanation:

bc 2.80/7 = 0.40

0.40 times 5 = 2.00

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HELP! what is the y-intercept of the function f(x)=5*(1/6)^x

vivado [14]

Answer:

The y intercept is (0,5)

Step-by-step explanation:

f(x) = 5 * (1/6)^x

What is the y intercept? Let x = 0

f(0) = 5 * (1/6)^0

f(0) = 5*1 = 0

The y intercept is (0,5)

5 0

3 years ago

During a pumpkin launching contest, two pumpkins are launched at the same time.

dusya [7]

Answer:

Even if they are different weights they will fall at the sam time

Step-by-step explanation:

by fall I mean hit the ground

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3 years ago

A certain insecticide kills 60% of all insects in laboratory experiments. A sample of 12 insects is exposed to the insecticide i

Vilka [71]

Answer:

The probability that exactly 10 insects will die

P( X = 10 ) = 0.06385

Step-by-step explanation:

Step(i):-

Given a certain insecticide kills 60% of all insects in laboratory experiments

Given proportion p = 0.60

q = 1 - 0.60 = 0.40

Given sample size 'n' = 12

Step(ii):-

Let "X' be the random variable of binomial distribution

$P(X=r) = n_{C_{r} } p^{r} q^{n-r}$

The probability that exactly 10 insects will die

$P(X=10) = 12_{C_{10} } (0.60)^{10} (0.40)^{12-10}$

$n_{C_{r} } = \frac{n!}{(n-r)!r!} = \frac{12!}{(12-10)!10!} = 66$

$P(X=10) = 66 X (0.60)^{10} (0.40)^{2} = 0.06385$

Final answer:-

The probability that exactly 10 insects will die

P( X = 10 ) = 0.06385

4 0

3 years ago

If 7x – 24 = 8x – 39, then x = ?

Georgia [21]

Answer:

Step-by-step explanation:

-x=-15

x=15

105 -24 = 120 - 39

81 = 81

8 0

2 years ago

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Ratio between 16 hours and 2 days

Dafna1 [17]

Answer: 1:3

Step-by-step explanation:

2 Days = 48 hours

16 : 48 hours

1:3

3 0

3 years ago

Read 2 more answers