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3 years ago

5.2x+8+2.1x-3 which is an equivalent expression by combining like terms A. 5.2x+8+2.1x-3 B. 5.2x+5+2.1x C 13.2x-0.9x D 7.3x+5

Mathematics

1 answer:

satela [25.4K]3 years ago

7 0

Answer: 7.3x + 5

Step-by-step explanation:

For us to solve the question, we have to solve 5.2x+8+2.1x-3 and the answer gotten will allow us know the equivalent expression.

= 5.2x+8+2.1x-3

= 5.2x + 2.1x + 8 - 3

= 7.3x + 5

Therefore, the correct answer is 7.3x + 5

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Point M is chosen random inside the square ABCD. The length of the big and small squares are 10cm and 6cm respectively. What is

r-ruslan [8.4K]

The question is an illustration of probability. The probability of an event is the calculated by dividing the required outcomes by the possible outcomes.

The probability that M will be in the shaded region is 0.64

The given parameters from the question are:

Side length of the big square = 10 cm

Side length of the small square = 6 cm

See attachment for diagram (not drawn to scale)

First, we calculate the area of the squares using:

$Area=Length^2$

The area of the big square is:

$A_1=10^2$

$A_1=100$ ----- this represents the possible outcomes

The area of the small square is:

$A_2=6^2$

$A_2=36$

The area of the shaded region is the difference between the areas of the big and small squares:

$A = A_1 - A_2$

$A = 100 - 36$

$A = 64$ ----- this represents the possible outcomes

So, the probability that M is on the shaded area is:

$P(Shaded) = \frac{A}{A_1}$ --- i.e. the shaded area divided by the total area

$P(Shaded) = \frac{64}{100}$

$P(Shaded) = 0.64$

Read more about probability at:

brainly.com/question/16693319

4 0

3 years ago

Lori works as a cartoonist for a teen magazine.The time she spent sketching is given by the equation m=12s, where mis the number

Vera_Pavlovna [14]

Answer:

Lori spends 9 minutes on sketching $\frac{3}{4}$ th of a sketch.

Step-by-step explanation:

Given equation:

$m=12\ s$

where $m\rightarrow$ number of minutes Lori spends on sketching

and $s\rightarrow$ number of sketches Lori makes.

We need to calculate the time spent by Lori in sketching $\frac{3}{4}$ of a sketch.

So we know the value of $s=\frac{3}{4}$ as $s$ represents number of sketches and in this situation Lori has sketched only a fraction of a painting.

So we plugin $s=\frac{3}{4}$ in the equation and calculate $m$ which is time spent by Lori sketching $\frac{3}{4}$ th of a sketch.

$m=12\ \frac{3}{4}$

$m=\frac{36}{4}$

∴ $m=9$ minutes (Answer)

∴ Lori spends 9 minutes on sketching $\frac{3}{4}$ th of a sketch.

5 0

3 years ago

What is the answer and solution steps I’ll give you brainlist and points

BlackZzzverrR [31]

Answer:

the answer is b(-7/4)

Step-by-step explanation:

2(x+5)-3=(2x=1)+1

2x+10-3=-(2x+1)+1

2x+7=-(2x+1)+1

2x+7-2x-1+1

2x+7=2x

2x+7-7+2x-7

x=-7/4

8 0

3 years ago

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write a short note to a friend explaining when to reverse the inequality when you are solving an inequality

Liula [17]

You reverse the inequality when you divide both sides by a negative number.
example:
-5x>45 (you divide both sides here by -5 to get the value of x)
answer:
x<9 (notice inequality has been has been reversed)

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4 years ago

Which is the inverse of the function f(x)=1/3x+5

jolli1 [7]

Answer:

f-¹(x) =(1-5x) /3x.

Step-by-step explanation:

f(x)=1/(3x+5)

Let y=1/(3x+5)

Exchanging x and y,

x=1/(3y+5)

3y+1=1/x

3y=1/x-5

3y=(1-5x) /x

y=(1-5x)/3x

f-¹(x) =(1-5x) /3x.

5 0

3 years ago

Read 2 more answers