Please help me due today i beg

wlad13 [49]

Answer:

$\frac{1}{5}$

Step-by-step explanation:

$\frac{9}{20} - \frac{1}{4}$

Make sure they have a common denominator. To do so, you must find a number the both have in come. Here, the number they have in common is 20.

What times 4 equals 20? 5. Whatever you do to the denominator you must do to the numerator.

$\frac{5}{5}$ × $\frac{1}{4}$ = $\frac{5}{20}$

Now you have $\frac{9}{20} - \frac{5}{20}$ = $\frac{4}{20}$

Then you can simplify $\frac{4}{20}$ to $\frac{1}{5}$ by dividing it by $\frac{4}{4}$

8 0

3 years ago

Which ordered pair is the best estimate for the solution of the system of equations?

Rasek [7]

Answer:

The ordered pair of the solution is (0.022, -0.55). None of the alternatives given we can consider as the best estimate because there isn't at least one positive value for x, when it's actually positive. Picking (0, -2) as the best estimate is also far from the best estimate.

Step-by-step explanation:

Let's solve the system of equations:

y = −25x

−2y = 5x+1

***********************

Substituting y in the 2nd equation:

-2 (-25x) = 5x + 1

50x = 5x + 1

45x = 1

x = 1/45

x = 0.022

**********************

Solving for y in the 1st equation:

y = -25 (0.022)

y = - 0.55

The ordered pair of the solution is (0.022, -0.55). None of the alternatives given we can consider as the best estimate because there isn't at least one positive value for x, when it's actually positive. Picking (0, -2) as the best estimate is also far from the best estimate.

6 0

3 years ago

Use the Distributive Property to rewrite each expression. 4 (h - 5g)

snow_tiger [21]

Answer:

4h - 20g

Step-by-step explanation:

According to the Distributive Property, you should multiply (distribute) the 4 across the parentheses.

4(h - 5g)

= (4•h) - (4•5g)

= 4h - 20g

5 0