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Maru [420]
3 years ago
7

What expression is equivalent to 4 to the power of 4 times 4 to the power of -9

Mathematics
2 answers:
rodikova [14]3 years ago
7 0

Answer:

i tried but i got D

Step-by-step explanation:

zvonat [6]3 years ago
4 0

Answer:

idk this stuff yet

Step-by-step explanation:

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3.The legs of a right triangle are equal. Given the length of the legs, find the length of the hypotenuse. Round
miskamm [114]

Step-by-step explanation:

This sounds like you need to use Pythagorean therum which is A^2+B^2=C^2

a(squared)+ B(squared)=C(squared) and at the end try to use √ to get your answer.

5 0
3 years ago
HELP ASAP !! i’ll give you the brainliest answer as long it’s correct plsss helpp
stepan [7]

Answer:

its b, and why does everyone want brainllest

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
The County Fair has to 2 ticket options.Option 1 has an entry fee of $5 and charges $0.65 per ride per ride. Option 2 has an ent
Ugo [173]

For 25 tickets total cost of option one and option two to be the same.

Step-by-step explanation:

Let us assume the total number of rides = m

for which BOTH options cost same.

Case: 1

The cost of entry fee  = $5

The cost per ride = $0.65

So, the cost of m rides  = m x ( Cost of 1 ride )  

=  m x ($0.65 ) = 0.65 m

Cost of purchasing m tickets in first ride  = Entry Fee + Per ticket cost

                                                                       = 5 +0.65 m    ..... (1)

Case: 2

The cost of entry fee  = $10

The cost per ride = $0.45

So, the cost of m rides  = m x ( Cost of 1 ride )  

=  m x ($0.45 ) = 0.45 m

Cost of purchasing m tickets in second ride  = Entry Fee + Per ticket cost

                                                                       = 10 +0.45 m    ..... (2)

Now, equating (1) and (2), we get:

5 +0.65 m = 10 +0.45 m

or, 0.20 m = 5

or, m = 5/0.20  = 25

or, m = 25

Hence, for 25 tickets total cost of option one and option two to be the same.

5 0
3 years ago
INPUT SU,0 IF OFF OUTPUT M,0 OUTPUT T,0 OUTPUT W,0 OUTPUT TH,0 OUTPUT F,0 ELSE ON OUTPUT M,0 OUTPUT T,0 OUTPUT W,0 OUTPUT TH,0 O
Karo-lina-s [1.5K]
Why’s it in all caps and what’s the question this doesn’t look like a math equation
3 0
3 years ago
Suppose that 12% of test scores for the unit 1 test were above 85 and 8% were below 70. Assuming a normal
Doss [256]

Answer:

Mean = 78.2

Standard deviation = 5.8

Step-by-step explanation:

Mathematically z-score;

= (x-mean)/SD

From the question;

12% of test scores were above 85

Thus;

P( x > 85) = 12%

P(x > 85) = 0.12

Now let’s get the z-score that has a probability of 0.12

This can be obtained from the standard normal distribution table and it is = 1.175

Thus;

1.175 = (85 - mean)/SD

let’s call the mean a and the SD b

1.175 = (85-a)/b

1.175b = 85 - a

a = 85 - 1.175b ••••••••(i)

Secondly 8% of scores were below 70

Let’s find the z-score corresponding to this proportion;

We use the standard normal distribution table as usual;

P( x < 70) = 0.08

z-score = -1.405

Thus;

-1.405 =( 70-a)/b

-1.405b = 70-a

a = 70 + 1.405b ••••••(ii)

Equate the two a

70 + 1.405b = 85 - 1.175b

85 -70 = 1.405b + 1.175b

15 = 2.58b

b = 15/2.58

b = 5.81

a = 70 + 1.405b

a = 70 + 1.405(5.81)

a = 78.16

So mean = 78.2 and Standard deviation is 5.8

4 0
3 years ago
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