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3 years ago

What is the value of vba? be sure to give the correct algebraic sign?

Mathematics

1 answer:

Agata [3.3K]3 years ago

4 0

Answer:

V = Vab from the drawing.

So if V = –10 volts, then Vab = –10v and Vba = +10v

"the figure is the same in the link below except that the voltage is from a to b" but the drawing shows that V = Vab

Hoped I helped

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Determine the length of AC.<br><br> 32 units<br> 35.2 units<br> 38.5 units<br> 10.3 units

Alex73 [517]

Answer:

38.5

Step-by-step explanation:

b^2= 29^2+20^2-2×20×29× Cos 102

b^2=841+400-1160 (-0.2079)

=1241- 241.164

b^2=1482.164

b= square root of 1482.164

AC = 38.5

5 0

3 years ago

After a special medicine is introduced into a petri dish full of bacteria, the number of bacteria remaining in the dish decrease

Crazy boy [7]

Answer:

0.17

Step-by-step explanation:

The function can be rewritten as ...

B(t) = 9300·((1/2)^6)^t = 9300·(1/2)^(6t)

In order to multiply the number of bacteria by 1/2, the value of the exponent 6t must be equal to 1:

6t = 1

t = 1/6 ≈ 0.166667 ≈ 0.17

The culture loses half its size every 0.17 seconds.

7 0

3 years ago

A desk is on sale for 629$ which is 85% of the regular price. what is the regular price?

garik1379 [7]

Answer:

$740.00

Step-by-step explanation:

85% of x is 629

Translate into algebra. Use a decimal in place of the percent:

.85x = 629

Divide by .85

x = 740

This answer makes sense because the regular price should be a little higher than the sale price. If they are paying 85% they're only getting 15% off.

Check:

740×.85 = 629

3 0

2 years ago

Read 2 more answers

Si 20 galones de gasolina cuentan 13.50 cuanto costara llenar un tanque de 64 galones

MAVERICK [17]

Costaría $43.20 para llenar un tanque de 64 galones

6 0

3 years ago

Solve the following system using the substitution method. Enter your answer as an ordered pair in the form (x, y)(x,y).

slamgirl [31]

The value of ordered pair of (x,y) is (-2, -3)

<h3>How to solve the equation by substitution method ? </h3>

x - 5y = 13

4x - 3y = 1

Solve the equation for x

x - 5y = 13

Move '5y' to R.H.S and change it's sign

x=13+5y

Substitute the given value of X into the equation

4x - 3y = 1

4(13+5y)-3y = 1

Solve the equation for y

distribute 4 through the parentheses

52+20y -3y =1

Collect like terms

52+17y = 1

Move constant to R.H.S and change it's sign

17y = 1 - 52

Calculate

17y = - 51

Divide both sides of the equation by 17

17y/17 = -51/17

Calculate

y = -3

Now, substitute the given value of y into the equation

x = 13 + 5y

x= =13+5x(-3)

Solve the equation for x

Multiply the numbers

= 13 - 15

Calculate the difference

= -2

The possible solution of the system is the ordered pair

( x , y )

( x , y ) = ( - 2 , - 3 )

-----------------------------------------------------------------------

Check if the given ordered pair is the solution of the system of equation

-2-5×(-3)=15

4×(-2)-3×(-3)=1

Simplify the equalities

13 = 13

1=1

Since all of the equalities are true, the ordered pair is the solution of the system

( x , y ) = ( - 2 , - 3 )

Therefore the value of ordered pair of (x,y) is (-2, -3)

The complete question is : Solve the system by substitution. x−5y=13 4x−3y=1 Enter your answer as an ordered pair (x,y).

To learn more about substitution method refer to :

brainly.com/question/26094713

#SPJ1

4 0

1 year ago