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3 years ago

In the formula a2 + b2 = c2, what is the value of a2?

Mathematics

2 answers:

r-ruslan [8.4K]3 years ago

6 0

A^2 + b^2 = c^2 Moving b^2 to RHS a^2 = c^2 - b^2

eimsori [14]3 years ago

4 0

$a^2+b^2=c^2\ \ \ \ |subtract\ b^2\ from\ both\ sides\\\\a^2=c^2-b^2\\\\\boxed{a=\sqrt{c^2-b^2}}$

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A store buys a remote control robot for $60. They mark it up by 30%. What will be the selling price

exis [7]

The answer would be 78 because 10% of 60 is 6. 6 x 3 = 18 60+18=78

7 0

2 years ago

What expression is equivalent to (^3√2^5)^1/4

Nezavi [6.7K]

Soo first apply the exponent rule (2^5)^1/3*1/4
1/3*1/4= 1/12
so (2^5)^1/12
then you apply the exponent rule again 2^5*1/2
so 5*1/12= 5/12
So the answer would be 2^5/12

6 0

4 years ago

Read 2 more answers

Which expression can be written as k square root 3 where k is an integer

Damm [24]

Answer:

A simple expression is $\sqrt{48}$ = 4 $\sqrt{3}$

Step-by-step explanation:

Surds are irrational numbers expressed with respect to a square root. There are some basic rules required when dealing with surd.

Integers are numbers that do not have a decimal or fractional part i.e whole numbers. So, a simple expression that can be written as k square root 3 where k is an integer is $\sqrt{48}$ .

So that,

$\sqrt{48}$ = $\sqrt{16 * 3}$

= 4 $\sqrt{3}$

8 0

4 years ago

To be considered for pilot school, 12 students took a spatial reasoning test that resulted in this list of scores. Find the valu

lord [1]

Answer:

the 90th percentile is 145

Step-by-step explanation:

Data provided:

152 121 130 143 122 101 137 98 138 127 145 117

Number of students considered, n = 12

To find:

90th percentile

Now,

Step 1 : Arrange the data in ascending order

98, 101, 117, 121, 122, 127, 130, 137, 138, 143, 145, 152

Step 2 : Compute the position of the 90th percentile

position of the 90th percentile, i = (90% × n)

Thus,

i = 0.90 × 12

i = 10.8

Now,

Step 3 : Since, the index i is not an integer, round up to the nearest integer

i.e i = 11

Therefore,

The 90th percentile is the value in 11th position,

i.e 145

7 0

3 years ago

Pump 1 can empty a pool in 9 hours while Pump 2 can empty the same pool in 12 hours. If the two pumps worked together, how long

ruslelena [56]

Answer:

About 5 hr 10 min

Step-by-step explanation:

rate 1 = 1 pool / 9 hrs rate 2 = 1 pool / 12 hours

now find the time with both rates combined

1 pool / ( 1/9 + 1/12) = 1/ (7/36) = 36/7 hr = 5 1/7 hr = 5 hr 8.6 min

8 0

2 years ago