Will give brainliest

Answer:

c is -1/20

Step-by-step explanation:

sorry, i don't know how to get the answer

i literally typed it up

Answer:

The equation is: [tex]R = \frac{L}{A}[/tex]

Step-by-step explanation:

The resistance, R (in ohms), of a wire varies directly with the length, L (in cm), of the wire, and inversely with the cross-sectional area, A (in cm2).

This means that we want to find an equation for R, which is a fraction.

Since it varies directly with the length L, L is the numerator.

Since it varies inversely with the cross-sectional area, A is the denominator.

So the equation is:

[tex]R = \frac{L}{A}[/tex]

Answer:

R ∝ L/ A

R = K L/ A

0.025= 500K/0.126

the constant, K=6.3 X 10^-6

Step-by-step explanation:

Step 1

The resistance, R (in ohms), of a wire varies directly with the length, L (in cm), of the wire, and inversely with the cross-sectional

area, A (in cm2)  is written mathematically as

R ∝ L/ A

Introducing the constant of proportionality,K,  we have

R = K L/ A

So given that s  500 cm piece of wire with  a radius of 0.2 cm has a resistance of 0.025 ohm.

We would First find area , since radius was given

Area = πr²

= 3.142 x 0.2²= 0.126cm²

Step 2

With our equation , R = K L/ A, puting all the necessary variables, we have

R = K L/ A

0.025= 500K/0.126

Solving for K

0.025= 500K/ 0.126

(0.025 X 0.126)/500 = K

K=6.3 X 10^-6

Answer:

C.

Step-by-step explanation:

interior angles for ABCD is 360° and for ABO(triangle above) is 180°

from triangle,

you will get angle for OBA which is 180° - 38° - 90° = 52°

from angle B, we know that, straight line is 180°.

so,

180° = 52° +y- 12°

y = 140°

so, we can calculate x.

360° = 90° + 90° + 128° + x

x = 52°

Answer:

84 + 84(0.22)

Step-by-step explanation:

In order to find the amount of the tip you need to do 84x0.22 then you add that on to the original price

Answer:

$9,853

Step-by-step explanation:

18% of $8,350 is $1,503, so if the price increased by 18%, we must add $8,350 and $1,503, which would equal $9,853.

Answer:

78

Step-by-step explanation:

you have to multipy 13 and 12 then divide it by 2.(13*12=156/2=78)

Answer:

Y=10/3

Step-by-step explanation:

Answer:

Exact Form:

y

=

10

3

Decimal Form:

y

=

3.

¯

3

Mixed Number Form:

y

=

3

1

3

Step-by-step explanation:

Answer:

(i) Triangle ABC and triangle ADE are similar triangles. Hence, their ratios will be same.

Ratio of DE to BC is 4:6 => 2:3

To find area, we need to raise the ratio of length to power 2

(2/3)² = 16/x

4/9 = 16/x

x = (16*9)/4

x = 36cm²

Therefore, area of triangle ABC is 36cm²

(ii) Ratio of DE to BC is 4:8 => 1:2

(1/2)² = 25/x

1/4 = 25/x

x = 25*4

x = 100cm²

Therefore, area of triangle ABC is 100cm²

I'm not sure about the third question, sorry

Step-by-step explanation:

Answer:

The cutoff value for the top 5% of all IQs is 131.255.

Step-by-step explanation:

When the distribution is normal, we use the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question, we have that:

[tex]\mu = 100, \sigma = 19[/tex]

What is the cutoff value for the top 5% of all IQs

This is the 100 - 5 = 95th percentile, which is X when Z has a pvalue of 0.95. So X when Z = 1.645.

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]1.645 = \frac{X - 100}{19}[/tex]

[tex]X - 100 = 19*1.645[/tex]

[tex]X = 131.255[/tex]

The cutoff value for the top 5% of all IQs is 131.255.

Answer:

m=3/4

Step-by-step explanation:

slope formula= change in y over change in x

4-1/2-(-2)=3/4

Answer:the slope is 4/3 or 1 1/3 or 1.333333333

Step-by-step explanation:2-(-2)/4-1=4/3

Answer:

There are 220 different ways to arrange the acts.

Step-by-step explanation:

The order in which the acts are arranged is not important, so we use the combinations formula to solve this question.

Combinations Formula:

[tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by the following formula.

[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]

How many different ways can the program manager arrange 3 different acts from the original 12

Three acts from a set of 12. So

[tex]C_{12,3} = \frac{12!}{3!(12-9)!} = 220[/tex]

There are 220 different ways to arrange the acts.

Answer:

5^8

Step-by-step explanation:

You multiply the exponents!!

Answer:

$2.39

Step-by-step explanation:

4 pennies=4

2 nickels=10

10 dimes=100

5 quarters=125

$2.39

Answer:like $2.39

Step-by-step explanation:

Answer:

$2.40

Step-by-step explanation:

80x0.15=12

12/5=2.4

Answer:

Step-by-step explanation:

area of a triangular pyramid = base area + 3(triangular sides area)

                                              = 1/2 (5) 4.3  +  3 (1/2 x 5 x 8)

                                              = 10.75 + 3(20)

                                              = 70.75 in²

Answer: 10%

Step-by-step explanation:

The difference between his estimated and actual distance is 15 - 13.5 = 1.5

The percentage of error is the difference divided by the actual value.

1.5÷15 = 0.10

Converted to a percentage, it is 10%

Answer:

10%

Step-by-step explanation:

Answer:  1.75 amps

Step-by-step explanation:

V (voltage) = I (current) · R (resistance)

              V =    3.5 (110)

                 =   385

When Resistance is doubled, the current is cut in half.

             V = I R

         385 = I (2 · 110)

         [tex]\dfrac{385}{220}=\text{I}[/tex]

         1.75 = I          

Answer:

base x height divided by 2

Step-by-step explanation:

Answer:

2/2

Step-by-step explanation:

Let the numerator and denominator be x/x

10/12÷x/x=5/6

10x/12x=5/6

x/x=5/6÷10/12

x/x=5/6×12/10

x/x=2/2

Therefore the numbers are 2/2

Answer:

2/2

Step-by-step explanation:

To reduce a fraction, you have to divide it by a fraction with the equivalency of 1, since anything else would change the value of the fraction. In this instance, you know that you have the fraction 10/12, and you need to reduce it to 5/6. To do this, you must divide 10/12 by a fraction that equals 1 to create 5/6. Breaking it down, you can know that 10 divided by 2 is 5 and that 12 divided by 2 is 6. 2/2 is equal to 1, so that is the answer.

Answer:

A

Step-by-step explanation:

I think it's this answer

i dont know

Answer: Yes, It's a Function

Step-by-step explanation: The lines dont cross the X-Axis more than once

Answer: Its will be 105

Step-by-step explanation: But this is how you get it 315 divided by 3 = 105 or 9x35=315 divided by 3 =105

Answer:

>

<

<

=

<

Step-by-step explanation:

Answer:

Step-by-step explanation:

1) >

2) <

3) <

4) =

5) <