Ask question

Ask question

All categories

3 years ago

9

casey has n nickels.meghan has 4 times as many nickels as casey has.write an expression for the total number of nickels casey an

d meghan have.then simplify the expression.

1 answer:

Amanda [17]3 years ago

6 0

Answer:

5n

Step-by-step explanation:

Summarizing what we know:

Casey has n nickels, and Meghan 4 times as many: 4n

Then the total number of nickets these two people have is n + 4n, or 5n.

You might be interested in

Which postulate or theorem can be used to

sveticcg [70]

Answer:

AA Similarity Postulate

Step-by-step explanation:

we know that

If two figures are similar, then the ratio of its corresponding sides is proportional and its corresponding angles are congruent

step 1

Verify the proportion of the corresponding sides

$\frac{PS}{PQ}=\frac{PT}{PR}$

substitute

$\frac{45}{20}=\frac{36}{16}$

$2.25=2.25$ ----> is true

Corresponding sides are proportional

Triangle PQR is similar to Triangle PST

That means

Corresponding angles must be congruent

side QR is parallel side ST

and

$m\angle PQR=m\angle PST$ ----> by corresponding angles

$m\angle PRQ=m\angle PTS$ --> by corresponding angles

so

PQR is similar to PST by AA Similarity Postulate

4 0

4 years ago

The number of views on an interesting video after it's uploaded is represented by the following table:

defon

Answer:

The model for V(t) ,the number of views, t ,months after it's uploaded, best fits the data is $,V(t)=50(6.25)^t$

Step-by-step explanation:

Time (months) Views

0 50

2 313

4 1950

6 12,210

8 76,300

10 476,800

$(x_1,y_1)=(0,50)\\(x_2,y_2)=(2,313)\\(x_3,y_3)=(4,1950)$

$Slope = \frac{y_2-y_1}{x_2-x_1}$

$Slope = \frac{313-50}{2-0}$

Slope =131.5

$Slope = \frac{y_3-y_2}{x_3-x_2}$

$Slope = \frac{1950-313}{4-2}$

Slope =818.5

Since the slope is not same . So, it is not a linear relationship

$\frac{y_2}{y_1}=\frac{313}{50}=6.25\\\frac{y_3}{y_2}=\frac{1950}{313}=6.25$

Since the ratio between the consecutive outputs is same so, it is exponential relationship.

Formula : $y=ab^t$

Where a is the initial value = 50

b = rate of change = 6.25

The model for V(t) ,the number of views, t ,months after it's uploaded, best fits the data

So $,V(t)=50(6.25)^t$

5 0

3 years ago

HEEEEELPPPPPPP ASAP (20 pts!!!, will give u teh brainliest if ur explanation is good UwU)

garri49 [273]

Answer:

x=60

Step-by-step explanation:

So basically the sum of interior angle of a triangle is 180.

Add all the values and make it equal to 180.

x+3/2x+1/2x=180

Then find x

3x=180

x=180/3

x=60 degrees

5 0

3 years ago

Tpy6a [65]

Answer:

1. x > 13

2. x < -2

3. x < 5

Step-by-step explanation:

2x - 3 > 23

<u>→Add 3 to both sides:</u>

2x > 26

<u>→Divide both sides by 2:</u>

x > 13

2x - 3 > 3x - 1

<u>→Subtract 2x from both sides:</u>

-3 > x - 1

<u>→Add 1 to both sides:</u>

-2 > x

5x - 4 < 21

<u>→Add 4 to both sides:</u>

5x < 25

<u>→Divide both sides by 5:</u>

x < 5

4 0

3 years ago

The diameter of a reamed hole is 70.36 mm. What is the radius setting, in mm., used to draw the hole?

Natalija [7]

Answer:

r = 35.18 mm

Step-by-step explanation:

We have,

The diameter of a reamed hole is 70.36 mm.

It is required to find the radius required to draw the hole.

The relation between diameter and radius is given by :

D = 2r

r is radius setting

$r=\dfrac{D}{2}\\\\r=\dfrac{70.36 }{2}\\\\r=35.18\ mm$

So, the radius setting used to draw the hole is 35.18 mm.

6 0

3 years ago