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Genrish500 [490]
2 years ago
14

4. If 3x − 1 = 11, the 2x = ? a. 20/3 b. 2 c. 4 d. 8 e. 72

Mathematics
2 answers:
vichka [17]2 years ago
7 0

Answer:

Your answer is C

Step-by-step explanation:

3(4)-1 = 11

katen-ka-za [31]2 years ago
4 0

Answer:

d.   8

Step-by-step explanation:

3x − 1 = 11

add 1 to both sides

3x = 12

Divide both sides by 3

x = 4

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

2x = 2*4 = 8

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Evaluate −6 − (−1)<br> a.) -7<br> b.) 5<br> c.) -5<br> d.) 6
brilliants [131]

Answer:

-5

hope this helped!!

8 0
2 years ago
Read 2 more answers
15. The average speed that a tsunami (a large tidal wave) travels is represented
irina [24]

Correct question :

The average speed that a tsunami (a large tidal wave) travels is represented

by the functions = (200d)^1^/^2 where s is the speed (in miles per hour) that the tsunami is traveling and d is the average depth (in feet) of the wave.

a. Find the inverse of the function.

b. Find the average depth of the tsunami when the recorded speed of the wave is 250 miles per hour.

Answer:

a) d = \frac{s^2}{200}

b) 312.5 ft

Step-by-step explanation:

Given:

Average speeds, s = (200d)^1^/^2

a) To find the inverse of the function.

s = (200d)^1^/^2

s² = 200d

200d = s²

d = \frac{s^2}{200}

Therefore, inverse of the function =

d = \frac{s^2}{200}

b) average depth when speed is 250 miles per hour.

Average depth = d

Therefore, let's use the formula :

d = \frac{s^2}{200}

= \frac{250^2}{200}

= \frac{62500}{200}

d = 312.5 feet

The average depth when speed is 250 miles per hour is 312.5 ft

3 0
3 years ago
Read 2 more answers
Gas is priced at $2.70 per gallon. My gas tank has 2 gallons currently in the tank. Write an equation to show much
mestny [16]
2.70g = c
you have 2 gallons so it would be 2.70(2)=5.40

gallons - g
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8 0
3 years ago
X^2 +6x+30 in vertex form
Elina [12.6K]

Answer:

Step-by-step explanation:

Factoring  x2-6x-30

The first term is,  x2  its coefficient is  1 .

The middle term is,  -6x  its coefficient is  -6 .

The last term, "the constant", is  -30

Step-1 : Multiply the coefficient of the first term by the constant   1 • -30 = -30

Step-2 : Find two factors of  -30  whose sum equals the coefficient of the middle term, which is   -6 .

     -30    +    1    =    -29

     -15    +    2    =    -13

     -10    +    3    =    -7

     -6    +    5    =    -1

     -5    +    6    =    1

     -3    +    10    =    7

     -2    +    15    =    13

     -1    +    30    =    29

7 0
3 years ago
Read 2 more answers
A salsa recipe uses 14 ounces of peppers and 7 ounces of onions
mixer [17]

Answer:

s = salsa

p = peppers

o = onions

s = 14p + 7o

Step-by-step explanation:

Hope this helps!

14 + 7 = 21 ounces.

8 0
3 years ago
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