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zhuklara [117]
3 years ago
14

How do I answer 3(a - 5) = 18

Mathematics
2 answers:
viva [34]3 years ago
7 0

To solve this, you need to isolate/get the variable "a" by itself in the equation:

3(a - 5) = 18          Divide 3 on both sides

\frac{3(a-5)}{3} =\frac{18}{3}

a - 5 = 6          Add 5 on both sides to get "a" by itself

a - 5 + 5 = 6 + 5

a = 11

PROOF

3(a - 5) = 18      Substitute/plug in 11 into "a" since z = 11

3(11 - 5) = 18

3(6) = 18

18 = 18

Kitty [74]3 years ago
6 0

Answer:

a=11

Step-by-step explanation:

used MathPapa

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true or false? the circumcenter of a triangle is the center of the only circle that can be inscribed about it
MissTica

Answer:

TRUE

Step-by-step explanation:

The circumcenter of a triangle is the center of the only circle that can be circumscribed about it

6 0
3 years ago
write a number that is greater than 1 in scientific notation . Explain how you know it is greater than 1 .
Gemiola [76]

Answer: 9.3 because it’s a decimal .

Step-by-step explanation:

6 0
3 years ago
The length of one side of an ice cube is 2.5 cm. Calculate the volume of the ice cube.​
pogonyaev

Answer:

15.63 cm^3

Step-by-step explanation:

Assuming that the ice cube is a perfect cube, then all of the sides are equal. There for, each side is 2.5 cm.

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6 0
2 years ago
A magician has a collection of 52 cards, with 26 red and 26 black cards. Four of these cards are classified as 'special', and tw
Brums [2.3K]

Answer:

option B (28/52)

Step-by-step explanation:

from probability

P(A∪B)=P(A)+P(B)-P(A∩B)

where

P(A∪B) = probability that event A or B happen

P(A∩B) = probability that event A and B happen simultaneously

P(A) =  probability that event A happen

P(B) =  probability that event B happen

the probability that the card is special or red

P( special or red)= P(special) + P(red) - P( special and red)

since

P(special)= 4/52

P(red) = 26/52

P( special and red) = 2/52

therefore

P( special or red)= 4/52 + 26/52 -  2/52 = 28/52

P( special or red)= 28/52

(option B)

6 0
4 years ago
In year 13, the scientist will put tree wrap around tree 1 to protect it from the winter snow. The height of the tree wrap needs
Dominik [7]

Answer:

22 feet²

Step-by-step explanation:

We are given:

height of tree h = 45 inches

Circumference= πd × inches

But d = 22.2inches

Therefore area will be

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Area = 3137 inches²

Let's convert from inches² to feet², we have:

1 foot = 12 inches.

Therefore,

1 square foot = 1foot × 1foot = 12inches×12inches

= 3137inches² / 144 inches²

= 22feet²

Note: I attached missing data which states that diameter at year 13 is 22.2inches

6 0
3 years ago
Read 2 more answers
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