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Otrada [13]
3 years ago
14

Brad says that if a second number is 125% of the first number, then the first number must be 75% of the second number. Is he cor

rect?
Mathematics
1 answer:
olga55 [171]3 years ago
8 0

Answer: He is not correct.

Steps:

Let x1 and x2 be the first and second number, respectively.

x_2 = \frac{5}{4}x_1\\\frac{4}{5}x_2 =x_1

In words, if the second is 125%, or 5/4 of the first number (first equation),

then the first is 4/5 of the second, which is 0.8 or 80%.

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3. Repeat this process to find the width and height of a newer 48-inch television whose
AlekseyPX

Answer:

<h3>23.5"</h3>

Step-by-step explanation:

Please see attached a sketch of the television

the size of a television is described by the length of its diagonal in inches.

in this case, the diagonal of the television is 48"

we are told that the aspect ratio is 16:9

hence the dimension of the television as seen from the draft is

length= 16x

height=9x

Applying Pythagoras theorem

(16x)^2+(9x)^2= 48^2

256x^2+81x^2=2304

337x^2=2304

divide both sides by 337 we have

x^2=2304/337

x^2=6.8367

x=√6.8367

x=2.6

What is the height

H=9x

=9(2.6)

=23.5"

4 0
3 years ago
Which of the binomials below is a factor of this trinomial
Yanka [14]
B: x+3 is your answer
7 0
3 years ago
Read 2 more answers
The sum of j and 47 is 5
Allisa [31]
Hi there! The answer is j = - 42.

In order to find the value of j, we need to set up and solve an equation.

The sum of j and 47 can be rewritten as
j + 47

The sum described above equals 5, so now we have all the information we know to set up the equation.
j + 47 = 5

Subtract 47 from both sides.
j + 47 - 47 = 5 - 47
j = - 42.

The answer is j = - 42.
~ Hope this helps you!

5 0
3 years ago
3. Simplify the expression.
Zarrin [17]
Use MathPapa for a faster answer hehe
4 0
3 years ago
Read 2 more answers
Need help with this. Write an equation that is parallel to the line whose equation is y = −8x − 7?
shutvik [7]

Answer:

Problem 4: y = -8x+b

Problem 5: C: 3x-2

Step-by-step explanation:

<u>Problem 4:</u>

The given line is in slope intercept form.

The slope-intercept form is:

y = mx+b

Here the co-efficient of x is the slope of the line. Comparing the given equation with general form

m = -8

Two parallel lines have same slope so the slope of line will be -8.

y=mx+b\\y = -8x+b

b can be any positive or negative integer as we don't know any point on the line parallel to given line.

<u>Problem 5:</u>

Slope = 3

y-intercept = -2

Slope intercept of line is given by:

y = mx+b

here m is slope and b is y-intercept

Putting the values

y = 3x-2

Option C: y=3x-2 is the correct answer

Hence,

Problem 4: y = -8x+b

Problem 5: C: 3x-2

6 0
3 years ago
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