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3 years ago

PLSSS HELP IF YOU TURLY KNOW THISS

Mathematics

2 answers:

Zinaida [17]3 years ago

8 0

Answer:

The division equation would be 1 in the gray box and 7 in the green box with the question mark. (1 divided by 7.)

Equation answer: 0.143

Step-by-step explanation:

How you turn a fraction into a decimal is to divided the numerator (top number) by the denominator (bottom number), so first we do, 1 divided by 7, which is 0.14285714285142857 (It is repeating 142857 after the decimal point over and over, so I just put one 142857 down below).

Therefore, $\frac{1}{7}$ as a decimal is 0.142857. Now, we need to round to the nearest thousandth.

The thousandths place is 3 points past the decimal point. So, currently the thousandths place has a 2 (0.152) But, we need to round. Next to the 2 is an 8. Since we round up if the number is greater than or equal to 5, and 8 is greater than 5, we round up. 2 rounded up is 3. Then, we eliminate all numbers past the thousandths place.

Therefore, we are left with 0.143.

Hope this helps! :D

kati45 [8]3 years ago

5 0

Answer:

7 is on the right

1 on the left

Step-by-step explanation:

1/7=7.000 nearest thousandths

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I need help!!!!!!!!!

Natalka [10]

Answer:

10 2/3 x 9/10 = 9 3/5

1 x 10 2/3 = 10 2/3

10 2/3 x 2 1/3 = 24 8/9

1/8 x 10 2/3 = 1 1/3

10 2/3 x 3/5 = 6 2/5.

Hope this helps!

8 0

2 years ago

The product of two rational numbers is (-28/81). If one of them is (-2/3), the find the other.

KatRina [158]

Answer:

The other rational number is $\dfrac{14}{27}$ .

Step-by-step explanation:

First rational number is $\dfrac{-2}{3}$

Let other rational number is $\dfrac{x}{y}$

The product of two rational numbers is $\dfrac{-28}{81}$

According to question,

$\dfrac{x}{y}\times \dfrac{-2}{3}=\dfrac{-28}{81}$

Multiplying both sides by (-3/2) such that,

$\dfrac{x}{y}\times \dfrac{-2}{3}\times \dfrac{-3}{2}=\dfrac{-28}{81}\times \dfrac{-3}{2}\\\\\dfrac{x}{y}=\dfrac{14}{27}$

So, the other rational number is $\dfrac{14}{27}$ .

6 0

3 years ago

Read 2 more answers

3p . (2+k) = 6p + 3pk

pashok25 [27]

$3p* (2+k) = 6p + 3pk$

Subtract $6 p + 3 pk$ from the both sides:

$3p(2+k) -(6p+3pk) = 6p+3pk-(6p+3pk)$

$= 3pk(2+k) - 6p-3pk = 0$

Factor $3p(2+k) - 6p - 3k$

Factor out common term $3p$

$= 3p(k-k+2-2)$

refine:

$0 = 0$

true for all $p$

hope this helps!

3 0

3 years ago

29.

Elis [28]

Answer:

Sum of their present ages = 20 years

Step-by-step explanation:

Present age :

Neha's age = x years

Reemas' age = x - 4

After 5 years:

Neha's age = (x +5) years

Reemas' age = (x - 4 + 5 ) = x + 1

Sum of the ages of Reema and Neha will be 30

Therefore,

x + 5 + x + 1 = 30

x + x + 5 + 1 = 30

2x + 6 = 30

2x = 30 - 6

2x = 24

x = 24/2

x = 12

Neha's age = 12 years

Reema's age = 12 - 4 = 8 years

Sum of their present ages = 12 + 8 = 20 years

4 0

3 years ago

What is the value of k in the equation?<br> 20^k/ 20^4 = 20^9

Luden [163]

Answer:

k = 13

Step-by-step explanation:

20 ^ k / 20^4 = 20^9

knowing the laws of exponents, diving two numbers of the same base with exponents is like subtracting the exponents, so

k^x / k^y

= k ^ (x - y)

apply that knowledge here

20 ^ k / 20 ^ 4 = 20 ^ 9

20 ^ ( k - 4 ) = 20 ^ 9

now the bases have no use here so ignore them, and just calculate the exponents

k - 4 = 9

solve using inverse operations

k - 4 = 9

+4 +4

k = 13

4 0

3 years ago

Read 2 more answers