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3 years ago

Which sentence demonstrates the multiplicative identity?

Mathematics

2 answers:

nasty-shy [4]3 years ago

6 0

Answer:

The answer is actually A

Step-by-step explanation:

ella [17]3 years ago

3 0

C
Explanation
I took the test.

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Find the value of n, correct to 4 significant figures.

Law Incorporation [45]

Answer:

6.708

Step-by-step explanation:

Y varies directly as the square of x (Given)

$\implies y\:\alpha \:x^2$ ......(1)

Y varies inversely as the square root of z (Given)
$\implies y\:\alpha\: \frac{1}{\sqrt z}$ ......(2)

Combining (1) & (2), we find:

$y\:\alpha \:\frac{x^2}{\sqrt z}$

$\implies y=\frac{kx^2}{\sqrt z}$ (Where k is constant of proportionality).....(3)

Now, when y = 2, x = 3 and z = 4, we find the value of k i.e. constant.

$2=\frac{k(3)^2}{\sqrt 4}$

$\implies 2=\frac{k(9)}{2}$

$\implies k =\frac{4}{9}$

Plugging the value of k in (3), we find:

$y=\frac{4x^2}{9\sqrt z}$ ....(4)

Next, in equation (4), plug y = 5, x = n and z = 16 and obtain the value of n by solving it.

$5=\frac{4(n)^2}{9\sqrt {16}}$

$\implies 5=\frac{4(n)^2}{9(4)}$

$\implies 5=\frac{(n)^2}{9}$

$\implies 5(9)=(n)^2$

$\implies 45=(n)^2$

$\implies n=\sqrt{45}$

$\implies n=6.70820393$

$\implies n\approx 6.708$

7 0

2 years ago

Please help me calculation completing square?<br>x²+2x-24=0?

Anna11 [10]

Answer:

x = 4, -6

Step-by-step explanation:

x = 4, -6

5 0

3 years ago

What is 5-b/2=1 if b=8

Svetach [21]

Answer:

true

Step-by-step explenation:

follow order of operations

5 -8/2 = 5 - (8/2)= 5-4= 1

7 0

3 years ago

Juliana bought 3 bags of chips for 0.85 each and 3 sodas for herself and two friends and spent exactly $6 (before tax.) write an

sineoko [7]

Answer: Cost of 1 soda = (Amount Juliana had- Cost of 3chips)/3

Step-by-step explanation: Cost of 3chips =$0.85×3= $2.55

Cost of 3 soda will be $6-$2.55
Cost of 1soda will be ($6-$2.55)/3

7 0

2 years ago

the faster a vehicle is going, the further it will continue to travel after the brakes are applied. Which is the independent var

nevsk [136]

I believe that the answer is speed in this situation but I'm not 100% sure

3 0

3 years ago