1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Blababa [14]
3 years ago
8

2 – Efetue:

Mathematics
1 answer:
BartSMP [9]3 years ago
5 0

A) 7x(-5)

A multiplicação de um numero positivo por um numero negativo resulta em um numero negativo: (+) x (-)=(-)

(7x5)

Multiplique os valores

-35

resposta para  A: -35

B)(-9)x(-8)

A multiplicação dois números negativos resulta em um numero positivo : (-)x(-)=(+)

9 x 8

Multiplique os valores

72

Resposta para B :72

C)(-15) : 5

A divisão de um numero negativo por um positivo resulta em um numero negativo: (-):(+)=(-)

-(15:5)

Divida os números

-3

Resposta para C: -3

D) 125 : 25

Divida os números

5

Resposta para D: 5

POR FAVOR ME MARCA BRAINLIEST

You might be interested in
A. 27%<br> B. 37.5%<br> C. 62.5%<br> D. 75%
scZoUnD [109]
B. Should be the correct answer
7 0
3 years ago
Read 2 more answers
The graphs of rational functions m and n have the same vertical asymptotes, and both have a single x-intercept at x = 5.
Hatshy [7]

Answer:

A

Step-by-step explanation:

We are given two rational functions m(x) and n(x) that have the same vertical asymptotes both with a single x-intercept at x = 5.

The correct choice will be A.

Recall the transformations of functions.

B represents m(x) being shifted up 5 units. If the function is shifted up, the vertical asymptotes will be the same, but the x-intercept will change.

C represents m(x) being shifted 5 units to the right. This changes both the x-intercept and the vertical asymptotes.

Likewise, D represents m(x) being shifted 5 units to the left. Again, this will change both the x-intercept and the vertical asymptotes.

Therefore, the only choice left is A. It represents a vertical stretch by a factor of 5. This preserves the x-intercepts and the vertical asymptotes. Consider the function:

\displaystyle m(x)=\frac{x-5}{(x-3)(x-7)}

If n(x)=5m(x), we can see that:

\displaystyle n(x)=\frac{5(x-5)}{(x-3)(x-7)}

So, the x-interceps and vertical asymptotes are preserved.

5 0
3 years ago
Read 2 more answers
An art project has an area of 63.6 square inches. What is the width, in inches, of the project?
miss Akunina [59]

Answer:

Option C . 5.3 in

Step-by-step explanation:

<u><em>The complete question is</em></u>

An art project has an area of 63.6 square inches. What is the width, in inches, of the project?

A rectangle is shown divided into 4 smaller rectangles that are related to the size of the edges. The top edge is labeled 10 inches and 2 inches, above the top two rectangles. The top two rectangles are much larger than the bottom two rectangles

Let

x ----> the length of the art project in inches

y ----> the width of the art project in inches

we know that

The area of the rectangular art project is equal to

A=xy

we have

A=63.6\ in^2

so

63.6=xy ----> equation A

x=10+2=12\ in

substitute the value of x in the equation A

63.6=(12)y

solve for y

y=63.6/12\\y=5.3\ in

8 0
3 years ago
Find the value of x in the triangle
SashulF [63]

Answer:

The answer is D

Step-by-step explanation:

you have to multiply 5 and 12 by the power of 2. 5 x 5=25 12 x 12=144 add them and it equals 169 then you have too divide it by the thing of 2 and it equals x=13

4 0
3 years ago
Read 2 more answers
A bacteria culture starts with 1000 bacteria and the number doubles every 40 minutes. (a) find a formula for the number of bacte
vfiekz [6]

The formula for the number of bacteria at time t is 1000 x (2^t).

The number of bacteria after one hour is 2828

The number of minutes for there to be 50,000 bacteria is 324 minutes.

<h3>What is the number of bacteria after 1 hour?
</h3>

The exponential function that can be used to determine the number of bacteria with the passage of time is:

initial population x (rate of increase)^t

1000 x (2^t).

Population after 1 hour : 1000 x 2^(60/40) = 2828

Time when there would be 50,000 bacteria : In(FV / PV) / r

Where:

  • FV = future bacteria population = 50,000
  • PV = present bacteria population = 1000
  • r = rate of increase = 100%

In (50,000 / 1000)

In 50 / 1  = 3.91 hours x 60 = 324 minutes

To learn more about exponential functions, please check: brainly.com/question/26331578

#SPJ1

5 0
2 years ago
Other questions:
  • Which numbers are a distance of 6 units from 2 on the number line
    14·1 answer
  • Samir paid 15.50 in shipping charges on a package that weighed 20 pounds. If shipping costs certain set amount per pound, what s
    5·1 answer
  • Seventy students are graduating in may. They make
    12·1 answer
  • What is log (5*3) expanded​
    13·1 answer
  • Help solve my math homework
    5·2 answers
  • A set of data with a mean 56 and a standard deviation 3.3 is normally distributed. find 2 standard deviations from the mean
    14·1 answer
  • Fg - 9h = 10j, for g
    15·1 answer
  • 46% of the students that were surveyed like to eat at McDonald's if 351 students do not like to eat at McDonald's how many peopl
    7·1 answer
  • If the sides of triangle A have lengths of 30 cm, 40 cm, and 50 cm, what are the lengths of the sides of triangle D?
    12·1 answer
  • A city has a 5% sales tax.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!