Daqui a 5 anos karina terá 37 anos. usando a letra X, escreva uma equação que permita calcular a idade que karina tem hoje. Me ajuda pfvrr​

Answer:

See step by step

Step-by-step explanation:

To find if a function intervals are possible, make sure the points are above the x axis.

The graph is getting positve around x=-3 but it isn't positive yet.

The graph is positve until x=-1

The graph becomes positive again again at x=2 and is positive infinitely forever.

So let set up our interval

We are going to start at -3 since that where it start getting positive, we then going to use the greater than sign since it get positve as we go to the right as of right now. We use the greater than becuase we are not going to include -3 as our solutions.

We then use a less than sign since the answer must be less than -1 becuase around-1 it start getting negative.

It becomes positive again at x=2 so since we going to left to right use the greater than sign becuase we are not including 2.

It infinitely becomes positive so our interval is x must be cause greater than w becuase it can be any interval greater than two.

[tex] - 4 > x < - 1[/tex]

and

[tex] 2 < x[/tex]

The roots or zeroes are the x intercept of the graph,(when y=0, what is the x value.)

The x intercepts are -3 and 2.

Answer:

D=6+13=19

Step-by-step explanation:

F=26+12=38

M=109-18=91

k=231-56=175

Answer:

I think it's B

Step-by-step explanation:

because you won't draw the same card twice because you took that card out of the running

hope this helps sorry if I'm wrong

Putting on a pair of pants and a shirt without looking at them are pair of events which are dependent on one another

Probability is a branch of mathematics which deals with the occurrence of a random event.

Drawing a certain card from a deck probability depends on whether or not another card has been drawn previously, as  it changes the number of cards remaining in the deck and the likelihood of drawing a certain card.

Drawing a pair of cards from a deck is the  pair of events which are dependent on one another.

Hence, putting on a pair of pants and a shirt without looking at them are pair of events which are dependent on one another

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Answer:

u have diabetes dawg

Step-by-step explanation:

Answer: ALL CREDIT TO THE GUY BELOW IT'S C

Sp-by-step explanation:

Answer:

k=0.12

Step-by-step explanation:

Answer:

speed of boat is 12 miles per hour and the speed of current is 9 miles per hour

Step-by-step explanation:

Answer:

<2 <4 <5

Step-by-step explanation:

When two lines are parallel and crossed by a transversal, the opposite interior angles are congruent.

Answer:

b

Step-by-step explanation:

Answer:

false

Step-by-step explanation:

Answer:

y = - x - 1

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + b ( m is the slope and b the y- intercept )

Calculate m using the slope formula

m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]

with (x₁, y₁ ) = (- 2, 1) and (x₂, y₂ ) = (0, - 1) ← 2 points on the line

m = [tex]\frac{-1-1}{0+2}[/tex] = [tex]\frac{-2}{2}[/tex] = - 1

The line crosses the y- axis at (0, - 1 ) ⇒ b = - 1

y = - x - 1 ← equation of line

Answer:

y= - x -1

Step-by-step explanation:

ran it through Desmos

I can't find a way to expllain  

it if i would put y= - 1 (becaues remember -1 is where the lines intersected with the y axis)

all there would be was a straight

line across -1 but since its goin  down 1

you need the - x     to give it a negative tilt

how u UNderstan

Answer: No although the expressions are equivalent by the distribute property, it is not in simplest form because when we combine 6.5x and 3.25x as they are like terms the simplified expression is 9.75x + 6.5

Step-by-step explanation: hope this helps

Answer:

honestly skip it

Step-by-step explanation:

Answer:

45

Step-by-step explanation:

you need to add all the numbers, remember that the total number is 360 then minus your answer that you got by 360

Answer: 7.33980582 x 10^0

Step-by-step explanation:

Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the 10. The sign of the exponent will depend on the direction you are moving the decimal.

The expression in scientific notation is 7 ×10^5

The four basic mathematical operations are Addition, subtraction, multiplication, and division.

Given that the terms are;

(8.4×10^8) ÷ (1.2×10^3)

Step 1: Divide the numerical parts:

8.4 ÷ 1.2 = 7

Step 2: Subtract the exponents:

10^8 /10^3 = 10^5

Now Putting the numerical part and the exponent together, we get:

7 ×10^5

Hence, the result of the expression in scientific notation is; 7 ×10^5

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Answer:

30

Step-by-step explanation:

3 + 8  + 7 + 2 + 6 + 4 = 30

good luck, i hope this helps :)

Answer:

32%

Step-by-step explanation:

First find the whole, the total number of toy cars:

160  on the wall} + 340 \text{ in display case} = }{500}  total toy cars}

160 on the wall+340 in display case=500 total toy cars

Method 1: Set up a proportion

Set up an equation of the form:

whole

part

​

= }{100}

100

percent

​

Assign the variable xx to the unknown value:x}=

x=

percent

The question asks what }percent of all the toy cars is 160

Substitute the known values with the numbers given in the problem, and the unknown value with xx:

\frac{\color{red}{160}}{\color{orange}{500}}=

500

160

​

={100}

100

x

​

Solve for xx:

100}{160}=

100⋅160=

{500}

500⋅x

Cross multiply

16000}{500}=

500

16000

​

=

{500x}{500}

500

500x

​

Divide both sides by 25

{32\%}=

32%={x}

x

Simplify

Method 2: Find percent directly

Find \(160\) out of \(500\) as a decimal:}

Find 160 out of 500 as a decimal:

{160} {500}}=

500

160

​

=

\,\,0.32

0.32

\text{Convert decimal to percent:}

Convert decimal to percent:

0.32\times100=

0.32×100=

32\%}

32%

Move decimal 2 places to the right

number

percent

160

32%

500

100%

The percentage of Ryan's toy car collection does he keep on his wall should be considered as the 32%.

Since Ryan has a toy car collection consisting of 160 toy cars he keeps on the wall and 340 he keeps in a display case.

So here the percentage be like

[tex]= 160 / (160 + 340)[/tex]

= 32%

Hence, The percentage of Ryan's toy car collection does he keep on his wall should be considered as the 32%.

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Answer:

To determine if a point E inside a square is closer to any of the vertices of the square we have to determine the length of the diagonals between the point E and the vertices of the square i.e. AE, BE, CE, DE

The diagonal can be determined by applying Pythagorean's theorem

Step-by-step explanation:

To determine if a point E inside a square is closer to any of the vertices of the square we have to determine the length of the diagonals between the point E and the vertices of the square i.e. AE, BE, CE, DE

The diagonal can be determined by applying Pythagorean's theorem

Answer:

2/7

Step-by-step explanation:

This is easy! No need to over think it btw!

1) whenever you divide by a whole number such as in this case;4. You need to put a 1 under 4... like this: 4/1 (so it can become a fraction!)

2) Use KEEP, CHANGE, FLIP when you are dividing fractions!

    8/7 --> you keep that number

    ÷ ---> × = you change the division sign into multplication sign

    4 ---> 1/4  = you put 1 over 4 and flip it which you get from 4/1  --> 1/4

3) Your would look like this....

   8/7 * 1/4 = ?

4) Muliply horizontally; 8 * 1 = 8 , 7 * 4 = 28

5) You get 8/28   Don't forget to simplify!!!

6) 8/4 / 32/4 = 2/7

ALSO, here's an example of KEEP, CHANGE, FLIP:

Answer:

$67.4

Step-by-step explanation:

Answer:

$101.1

Step-by-step explanation:

Answer:

slope: 2

y- intercept: 60

equation: y= 2x + 60

Answer:

y=3

2x+3 ^&^^^^^^////£¥¥

Answer:

y = 2x+2

Step-by-step explanation:

Answer:

Step-by-step explanation:

Find the y-intercept first, then, from that point, go tide over run to find your slope. This line has a positive slope, so count up two and over one (2/1). After that, input what data you've collected into your equation (y = mx + b) and you'll have your answer.

Answer:

The black lives matter movement was a reason to tell the people that we are still all the same even though we don't have the same colored skin or aren't the same gender or we dont believe in the same beliefs.

Where as the civil rights movement was to clarify that blacks and whites males and females have the same rights.

Answer:

x = 33.33 kilometers

Step-by-step explanation:

you could make use of the percent, base, and rate formula here. we know that 15% is the rate, 5 kilometers is the percent, therefore what we are looking for is our base.

[tex]\frac{percent}{base} =\frac{rate}{100}[/tex]

[tex]\frac{5}{x}=\frac{15}{100}[/tex] ; cross multiply.

15x = 500

x = 33.33 kilometers

therefore, the race is 33.33 kilometers.

Answer:

33.33

Step-by-step explanation:

15%/100 and 15%=5KM 5=15% so make it 1% 5÷15=0.3333..... = 1% therefore time it to 100×0.3333 (1%) = 33.33KM is the total race KM

Answer:

x = 3

y = 0

Step-by-step explanation:

Answer:

3 inches

Step-by-step explanation:

It is 3 inches as seen in the square boxes within the big square