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3 years ago

Will mark Brainliest!!!!!!!!

1 answer:

4 0

F(x)=25x+100To find the second month substitute x with 2. f(2)=25(2)+100month 2= $150 Do the same for month ten but substitute x with 10 this time.f(10)=25(10)+100month 10= 350 The average rate of change is $25.

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if 48% of the students at a certain college are female and there are 2,400 female students, what is the total amount of students

Mekhanik [1.2K]

Answer:5

Step-by-step explanation: you have to dived into two groups into five.

7 0

4 years ago

Solving 8 problems per minute, Fast Finn can finish his test in time. He was however, working faster, solving 10 problems per mi

mrs_skeptik [129]

Answer:

Number of problems = 240

Step-by-step explanation:

Let x be the number of questions and t be the time.

Given:

Average rate = 8 problems per minute

Fast Finn rate = 10 problems per minute

Fast Finn taken time = t - 6

We need to find the number of problems on the test paper.

Solution:

Average rate to solve test paper.

$Average\ rate =\frac{Number\ of\ questions}{time}$

$8 =\frac{x}{t}$

$t =\frac{x}{8}$ --------------(1)

Fast Finn rate to solve the test paper.

$Average\ rate =\frac{Number\ of\ questions}{time}$

$10 =\frac{x}{t-6}$

Using cross multiplication rule.

$x=10(t-6)$

$x=10t-60$

substitute $t =\frac{x}{8}$ from equation 1.

$x=10(\frac{x}{8}) -60$

Rearrange the equation as:

$x - \frac{5}{4}x = -60$

$\frac{4x-5x}{4}=-60$

$-\frac{x}{4} = -60$

Using cross multiplication rule.

$x = 60\times 4$

x = 240 problems.

Therefore, 240 problems were on the test.

4 0

4 years ago

For a party, you order 4 XXL pizzas & 2 boxes of breadsticks from Rock Star Pizza for $86. You return and order 6 XXL pizzas

Alex787 [66]

Answer:

XXL = $19.75

Box of Breadstick = $3.5

Step-by-step explanation:

Given that:

Let :

cost per XXL pizza = x

Cost per box of bread stick = y

4x + 2y = 86 - - - (1)

6x + 4y = 132.50 - - - (2)

From (1): Divide (1) by (2)

2x + y = 43 - - - (3)

y = 43 - 2x

Substitute y = 43 - 2x into (2)

6x + 4(43 - 2x) = 132.50

6x + 172 - 8x = 132.50

-2x + 172 = 132.50

-2x = 132.50 - 172

-2x = - 39.50

x = $19.75

y = 43 - 2x

y = 43 - 2(19.75)

y = $3.5

3 0

3 years ago

Simplify this polynomial identity 5(3+6)+2(7+3)

Softa [21]

Answer:

the answer is 65.

Step-by-step explanation:

use order of operations.

$5(3+6)+2(7+3)\\15+30+14+6\\45+20\\65$

hope this helps :)

3 0

4 years ago

Point A is inside triangle E D F. Lines are drawn from the points of the triangle to point A. Lines are drawn from point A to th

Crazy boy [7]

Answer:

Option B. 3 is the answer.

Step-by-step explanation:

To draw a circumcenter of a triangle we draw the perpendicular bisectors of the the sides of the triangle first.

Intersection point of these perpendiculars drawn is the circumcenter of the circle.

Distances of the circumcenter to the vertices are same, that means distance of circumcenter from the vertex is the radius of the circle.

Therefore, length of AE and AD will be same in measure.

AE = AD

2n + 4 = 10

2n = 10 - 4

2n = 6

n = 3

Therefore, Option B. 3 is the answer.

5 0

3 years ago