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Zigmanuir [339]
3 years ago
5

Which could be used to find the number n? “Four less than a number, n, is equal to fifteen.”

Mathematics
1 answer:
kozerog [31]3 years ago
6 0

Answer:

C  (n - 15 = 4)

Step-by-step explanation:

This is the answer becuase it can be rewritten as:

n - 4 = 15 (by subtracting 4 from both sides and adding 15 to both sides);

this equation describes the "written" (verbal) equation.

You might be interested in
Mr. Lopez wrote the equation 32g+8g-10g=150 on the board. Four students explained how to solve for g. Alyssa: “I added 32 and 8
Vaselesa [24]

Answer:

Wilhem

Step-by-step explanation:

The given equation is

32g+8g-10g=150

Step 1 : Add 32g and 8g.

(32g+8g)-10g=150

(32+8)g-10g=150

40g-10g=150

Step 2: Subtract 10 from 40.

(40-10)g=150

30g=150

Step 3: Divide both sides by 30, find the value of g.

\frac{30g}{30}=\frac{150}{30}

g=5

The value of g is 5.

Therefore, Wilhem is correct.

7 0
3 years ago
Read 2 more answers
The sets of numbers 3, 4, 5 and 5, 12, 13 are examples
Wewaii [24]

Answer:

  • 8, 15, 17 — yes
  • 15, 20, 25 — yes
  • 20, 48, 52 — yes
  • 2, 9, 11 — no
  • 39, 80, 89​ — yes

Step-by-step explanation:

The squares of the three numbers in each of the given triples are listed. When the sum of the first two numbers is equal to the third, the set of numbers in the triple is a Pythagorean triple.

  {64, 225, 289}, yes

  {225, 400, 625}, yes — a 3,4,5 triple multiplied by 5

  {400, 2304, 2704}, yes — a 5,12,13 triple multiplied by 4

  {4, 81, 121}, no*

  {1521, 6400, 7921}, yes.

___

* the smallest set of integers that is a Pythagorean triple is {3, 4, 5}. The number 2 in this group tells you this cannot be a PT.

8 0
3 years ago
Read 2 more answers
Help me now pleasee!!!
Mice21 [21]
For this, you have to plot the points on the graph. where it says right hand height, you go down to that number on the x axis (horizontal) and then up to the correct number for right foot length (vertical)
8 0
3 years ago
Hurry! What 2 numbers add up to equal 22 and multiply by each other to get 40? They have to be the same numbers
ahrayia [7]

Answer:20 & 2

Step-by-step explanation:

20 x 2 =40

20+2=22

6 0
3 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

<em> R= Resistance </em>

<em>L = Inductance </em>

<em>C = Capacitance </em>

<em>w = Angular frequency </em>

\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

So

\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
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