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3 years ago

Jamie ran 1/5 of a relay. She ran 3/4 of a mile. How long was the relay?

Mathematics

1 answer:

topjm [15]3 years ago

4 0

(1/5) times (the relay) = 3/4 mile

Multiply each side by 5
The relay = (5) x (3/4) = 15/4 = 3.75 miles.

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The supermarket has 30 aisles. 10% of the aisles are empty, without any shoppers. How many empty aisles are there in the superm

lina2011 [118]

3

10/100=x/30
Cross multiply

100x=300
Divide each side by 100

X=3

3 0

3 years ago

A triangle has one angle that measures 23 degrees, one angle that measures 47 degrees, and one angle that measures 110 degrees.

blsea [12.9K]

Answer:

B) Scalene Triangle

Step-by-step explanation:

This must be a scalene triangle because:

If it were a right triangle, there would be a right angle so A is out

If it were an equilateral triangle, all 3 angles would be equal to each other so C is out

If it were an isosceles triangle, 2 angles would be equal to each other so D is out

A scalene triangle consists of angles that add up to 180 degrees, but none of them are equal to each other. Therefore B is right.

4 0

3 years ago

Read 2 more answers

Solve the math problem

Kamila [148]

The answer is -34 k^8 z^12.

6 0

2 years ago

An alternating current E(t)=120sin(12t) has been running through a simple circuit for a long time. The circuit has an inductance

Dvinal [7]

Answer:

14.488 amperes

Step-by-step explanation:

The amplitude I of the current is given by

$\large I=\displaystyle\frac{E_m}{Z}$

where

$\large E_m$ = amplitude of the energy source E(t).

Z = Total impedance.

The amplitude of the energy source is 120, the maximum value of E(t)

The total impedance is given by

$\large Z=\sqrt{R^2+(X_L-X_C)^2}$

where

R= Resistance

L = Inductance

C = Capacitance

w = Angular frequency

$\large X_L=wL$ = inductive reactance

$\large X_C=\displaystyle\frac{1}{wC}$ = capacitive reactance

As E(t) = 120sin(12t), the angular frequency w=12

$\large X_L=12*0.37=4.44\\\\X_C=1/(12*7)=0.012$

and

$\large Z=\sqrt{7^2+(4.44-0.012)^2}=8.283$

Finally

$\large I=\displaystyle\frac{E_m}{Z}=\frac{120}{8.283}=14.488\;amperes$

7 0

3 years ago

Can someone help me please

Kitty [74]

Answer:

I guess its c.

i am not sure

7 0

3 years ago