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lbvjy [14]
3 years ago
6

Help!!!!!!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
zhuklara [117]3 years ago
5 0

Answer:

see below

Step-by-step explanation:

9 ^-5 * 9^-3

When multiplying these we ADD the exponents:

9^-5 * 9^-3

= 9^(-5 + -3)

= 9 ^-8

= 1/9^8  Option A


2.    2^14 / 2^7   This is a division so we SUBTRACT the exponents:-

= 2^(14 - 7)  

= 2^7   (answer)

3.    If the triangle is a right angled one then it will obey Pythagoras Theorem so:-

13^ = x^2 + 5&2

x^2 = 13^2 - 5^2

x^2 = 144

x = 12    (answer)


4.   The last choice is a crucial step.

The total area of the triangles is the same in both large squares so  the area of the large  square e^2 = a^2 + b^2 ( the 2 squares in the left side large square).

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1 st farmer each basket has 2 apples how many basket of apples would karla need to buy from the 1 st farmer to have 36 apples???
strojnjashka [21]
She would need to buy 18 baskets of apples because 36/2=18
6 0
3 years ago
Read 2 more answers
In a group of 92 students 40 have brown eyes, 35 have hazel eyes, and 17 have blue eyes. Find the probability that a student pic
Oliga [24]

Answer:

as a fraction = 75/92

as a percentage = 81.52%

Step-by-step explanation:

total no of students = 92

probability that a student has hazel or brown eyes = Pr(hazel or brown)

but probability of a or b happening ie Pr(a or b) simply is Pr (a) +Pr (b)

therefore Pr(hazel or brown) = Pr(hazel)+ Pr(brown)

Pr(brown) = (no of brown eyes )/(total set of eyes)

                = 40/92 = 10/23

Pr( hazel) = (no of hazel eyes )/(total set of eyes)

                  = 35/92 =35/92

hence Pr(hazel or brown) = (10/23) + (35/92) =75/92

so there's 75/92 probability (or 0.8 out of 1 chance )to choose either hazel or brown randomly

6 0
3 years ago
PLSSS HELPPP DUE SOON ILL GIVE BRAINLESS
Kitty [74]

Answer:

D

Step-by-step explanation:

A, B, and C are not linear functions

D would be y=x/2

If you graphed y=x/2, you would get the points (4, 2), (7, 3.5), (8, 4), and (10, 5)

It's more obvious if you notice that y is half of x.

3 0
3 years ago
How many days in 50 years
hodyreva [135]
We know what every year has 365 but once every four years has 366. We can simplify it by saying that every year has 365 and 1/4 days
Now, we just have to mulitiply 365 \frac{1}{4} *50=18262.5

So we can say that 50 years have 18262 days and chance to 18263 (depends when we started counting)
7 0
3 years ago
Read 2 more answers
2000×40 with step by step explaination​
leva [86]

Answer:

80000

Step-by-step explanation:

you multiply 2000x40 and get 80000 or you can do 8x10^4

7 0
4 years ago
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