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3 years ago

What are the possible values for x in the equation 4x^2=64

2 answers:

4 0

4 x² = 64

Divide each side by 4 : x² = 16

Take the square root
of each side: x = √16

 x = + 4
and
 x = - 4 .

ss7ja [257]3 years ago

4 0

4x^2=64 divide both sides by 4 x^2=16 x= +4, -4 hope this helps

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Which function has a greater rate of change that the function represented in the table

Galina-37 [17]

I don't see a table

3 0

3 years ago

Select three ratios that are equivalent to 5:2.

timofeeve [1]

10:4

35:14

55:22

10:4 divided by 2:2=5:2
35:14 divided by 7:7= 5:2
55:22 divided by 11:11= 5:2

8 0

3 years ago

St. Augustine grass can grow at the rate of 4 over 7 centimeter per week.

kotegsom [21]

Given, the rate of growth of St. Augustine grass is $\frac{4}{7}$ cm per week.

We have to find the number of weeks that the grass grow to $\frac{12}{7}$ cm.

Let's take the number of weeks be x.

In 1 week the grass grow = $\frac{4}{7}$ cm

So in x weeks the grass grow = $(\frac{4}{7}) (x) =\frac{4x}{7}$ cm

So we can write,

$\frac{4x}{7} =\frac{12}{7}$

To solve it for x, first we will move 7 to the right side by multiplying it to both sides. We will get,

$(\frac{4x}{7}) (7) =(\frac{12}{7})(7)$

$4x =(\frac{12}{7})(7)$

$4x = 12$

Now to get we will move 4 to the right side by dividing it to both sides. We will get,

$\frac{4x}{4} =\frac{12}{4}$

$x = 3$

So we have got the required answer.

After 3 weeks the grass grow $\frac{12}{7} cm$ .

3 0

3 years ago

Laurie buys four bags of candy with ten pieces of candy in each bag then her father gives her five more pieces of candy Laurie w

earnstyle [38]

Answer:

The answer is 7 candies for each friend with a remainder of 3. If you are taking or have taken decimals i suggest you write 7.5 because candy can be split in half.

Step-by-step explanation:

First, multiply 4 by 10. The product is 40. Then, add 5. The sum is 45. Divide 45 by 6. The quotient is 7 with a remainder of 3.

5 0

3 years ago

20 men can complete a piece of work in 24 days how many men should be subtracted to finish the work in 32 days?

Aleksandr-060686 [28]

Answer:

5 men should be subtracted.

Step-by-step explanation:

This question is solved by proportions, using a rule of three.

As these measures(number of men needed and time) are inversely proportional, we multiply the lines instead of cross multiplication.

How many men should be working to complete the work in 32 days?

20 men - 24 days

x men - 32 days

Then

$32x = 20*24$

$x = \frac{20*24}{32}$

$x = 15$

How many men should be subtracted?

There are 20 to complete in 24 days.

15 are needed to complete in 32 days.

20 - 15 = 5

5 men should be subtracted.

7 0

3 years ago