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4 years ago

4/5 expressed as a decimal as what

Mathematics

2 answers:

Elden [556K]4 years ago

4 0

Answer:

0.8

Step-by-step explanation:

Divide 4 by 5

vovangra [49]4 years ago

4 0

Answer: $0.8$

Step-by-step explanation:

By definition, to express a fraction in decimal form, you need to divide the numerator by the denominator.

In this case, given the following fraction:

$\frac{4}{5}$

You can observe that the numerator is 4 and the denominator is 5. Therefore, you need to divide 4 by 5 in order to express it in decimal form.

Then, this is:

$\frac{4}{5}=0.8$

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Im going to buy huaraches in womens (7.5) so do i order that size or order an 8?

lord [1]

Depends on your foot size. I’d go with the 8 as when you hike etc your feet can “swell” some.

3 0

4 years ago

Ten times the square of a non-zero number is equal to forty times the number

S_A_V [24]

To convey as an algebraic expression simply break down the statements and use any variable to represent the number in the sentence.

10 • x^2 = 40x
10x^2 = 40x
10x^2 - 40x = 0
10(x^2 - 4x) = 0
X(x - 4) = 0

X = 0

X - 4 = 0
X = 4.

Here are two possibilities of what the number can be, but because it is a nonzero number, I believe it would be 4.

7 0

4 years ago

Mr. Akika has 30 24-cent and 33-cent stamps all told. The stamps are worth $8.91. How many of each kind of stamp does he have?

riadik2000 [5.3K]

Answer:

24-cent: 11
33-cent: 19

Step-by-step explanation:

I find it easiest to solve these using the variable to represent the number of the most-expensive item. Let x represent the number of 33-cent stamps. Then the total value (in cents) is ...

33x +24(30 -x) = 891

9x = 171 . . . . . . . . . . . . . subtract 24(30), collect terms

x = 19 . . . . . . . . . . . . divide by 9

30-x = 11 . . . . . . . find the number of 24-cent stamps

Mr. Akika had 11 24-cent stamps and 19 33-cent stamps.

_____

<em>Additional comment</em>

You seem to have several of these to solve. They all have a similar solution.

If we let x represent the number of higher-value items, N, the total number of items, V the total value, and v1 and v2 the individual values (v2 > v1), the equation is ...

v2(x) +v1(N -x) = V

x(v2 -v1) = V -v1·N

x = (V -v1·N)/(v2 -v1) . . . . generic solution

Using this formula in the problem here, we find ...

x = (891 -24(30))/(33 -24) = 171/9 = 19 . . . as above

7 0

3 years ago

You and your friends have decided to camp for a night. Your friend claims the perimeter of his tent is 7.5 metres.

Georgia [21]

Perimeter =8.2
the friend is incorrect

4 0

3 years ago

Word Phrase

tiny-mole [99]

Answer:

10 more than the product of 3 and x

= 3x + 10

9 less than the quotient of n and 5

= n/5 - 9 (n divided by 5 minus nine)

8 times the product of 5 and t

= 8 x 5t

3 times the sum of x and 5

= 3 x (x + 5)

$6.00 entry fee plus $7.50/night of camping

= 6 + 7.5n

5 0

3 years ago