Ask question

Ask question

All categories

3 years ago

8

Maria's father is 20 years older than Maria Write an expression that will represent the age of Maria's father use a variable and

identify what your variable stands for

1 answer:

abruzzese [7]3 years ago

4 0

Let's make "x" the variable for Maria's age.

And since Maria's father is 20 years older than Maria:

Age of Maria's Father = x + 20.

You might be interested in

Mathematicians use "..." to mean that a pattern continues: it

Fofino [41]

Answer:

Step-by-step explanation:

We khow that A is the sum of all odd numbers that are less than 100

So A= 1+3+5+...+99

We can calculate this sum without adding all this numbers one by one

A = the number of terms *( first term + last one ) over 2

To get the number of terms we substract the first term from the last term then we add one

We khow that odd numbers are wiritten this way : 2*n +1 where n is an integer

So 99= 2*49+1

1= 2*0+1

So the number of terms is : 49-0+1 =50

So A= 50*(1+99)/2 = 2500

Foloowing the same method we get :

B= (49-1+1)*(2+98)/2= 2450

A>B

6 0

3 years ago

Write (8a-^3) -2/3 in simplest form

Anna71 [15]

$(8a^{-3})^{\frac{-2}{3}} = \frac{a^2}{4}$

<em><u>Solution:</u></em>

<em><u>Given that,</u></em>

$(8a^{-3})^{\frac{-2}{3}$

We have to write in simplest form

<em><u>Use the following law of exponent</u></em>

$(a^m)^n = a^{mn}$

Using this, simplify the given expression

$(8a^{-3})^{\frac{-2}{3}} = 8^{\frac{-2}{3}} \times a^{ -3 \times \frac{-2}{3}}\\\\Simplifying\ we\ get\\\\(8a^{-3})^{\frac{-2}{3}} = 8^{\frac{-2}{3}} \times a^2\\\\We\ know\ that\ 8 = 2^3\\\\Therefore\\\\(8a^{-3})^{\frac{-2}{3}} =2^3^{\frac{-2}{3}} \times a^2\\\\(8a^{-3})^{\frac{-2}{3}} =2^{-2} \times a^2\\\\(8a^{-3})^{\frac{-2}{3}} = \frac{a^2}{4}$

Thus the given expression is simplified

8 0

3 years ago

−2 1/6 divided by 1 1/4<br> 100 points

galina1969 [7]

Answer:

-1 11/15

Step-by-step explanation:

<u>−2 1/6 divided by 1 1/4:</u>

-2 1/6 ÷ 1 1/4 =
- 13/6 ÷ 5/4 =
- 13/6 × 4/5 =
- 26/15 =
-1 11/15

8 0

3 years ago

Read 2 more answers

In which data set is the mean equal to the median?

sdas [7]

Answer:

The number in the middle

5 0

2 years ago

Whats the best way to solve angle problems

sweet-ann [11.9K]

Like what kinds? Finding out the type of angle? The degree?

3 0

3 years ago