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ella [17]
2 years ago
9

Solve the following equation algebraically: 3 x squared = 12 a. Plus-or-minus 3 b. Plus-or-minus 2 c. Plus-or-minus 3.5 d. Plus-

or-minus 1.5
Mathematics
1 answer:
babymother [125]2 years ago
5 0

Answer:

b)  ±2

Step-by-step explanation:

3x² = 12

divide each side by 3 to get:

x² = 4

x = ±2

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The answer to this maths question
Travka [436]

Given:

Toilet rolls com in packs of 4 and 9.

4-pack is priced at £2.04.

9-pack is priced at £4.68.

To find:

The pack that has better value by calculating the price per roll.

Solution:

We have, the 4-pack is priced at £2.04.

So, the price per roll for this pack is:

\dfrac{2.04}{4}=0.51

In the pack of 4 rolls the price per roll is £0.51.

It is given that, the 9-pack is priced at £4.68.

So, the price per roll for this pack is:

\dfrac{4.68}{9}=0.52

In the pack of 9 rolls the price per roll is £0.52.

Since the price per roll in the pack of 4 rolls is less that the price per roll in the pack of 9 rolls because 0.51 < 0.52, therefore the pack of 4 rolls has better value.

3 0
3 years ago
Use the number line to add the fraction.
horrorfan [7]

Answer:

1/8

Step-by-step explanation:

-5/8 + 3/4 = -5/8 + 6/8 = 1/8

3 0
3 years ago
Read 2 more answers
Consider the sequence 16,-8,4,-2,1,
Lana71 [14]
This is a geometric progression pattern with the common ratio of negative 0.5.

The next three would be -0.5, followed by 0.25, followed by -0.125
5 0
4 years ago
What is the following quotient?
Olegator [25]

Answer:

B.) StartFraction 5 StartRoot 11 EndRoot + 5 StartRoot 3 EndRoot Over 8 EndFraction

Step-by-step explanation:

edge 2020

6 0
3 years ago
Read 2 more answers
I can’t figure out what the half circle means the answer options are 163,129,149 and 186
vodka [1.7K]

Answer: 129

Step-by-step explanation: First find the area of the circle. Since we know the area of a circle is πr²  (pi multiplied by the radius squared) we can find the area of the half circle. The radius is 5 (because radius is half of the diameter)

Area=3.14(5)²

       =3.14(25)

       =78.5

But since this is just a half circle, divide this by 2

That will get 39.25

Then add this to the area of the rectangle (L*W) which is 90

That will get about 129

4 0
3 years ago
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