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OleMash [197]
3 years ago
14

The students at Midtown Middle school sold flowers as a fundraiser in September and October. In October, they charged $1.50 for

each flower. The October price was a 20% increase of the September price.
Part A
What was the price of the flowers in September?

Enter your answer in the box.

$
Part B
The seventh-grade class earned 40% of the selling price of each flower.

In September, they sold 900 flowers.
In October, they sold 700 flowers.

The seventh-grade class earned more money in (September / October)
Mathematics
1 answer:
MrRissso [65]3 years ago
8 0
Part A: Let the September price be x, then
1.2x = 1.5
x = 1.5/1.2 = 1.25
Therefore, September price is $1.25

Part B: In September, they earned 0.4 * 1.25 * 900 = $450
In October, they earned 0.4 * 1.5 * 700 = $420
Therefore, they earned more money in September.
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I need to show work and Idk how for 2 or 3. The -5,-2 and 8,3 is the answers just need work shown thanks
prisoha [69]
#2
2x - 4y = -2
2x + 3y = -16
------------------subtract
-7y = 14
y = 14/-7
y = -2

2x - 4y = -2
2x - 4(-2) = -2
2x + 8 = -2
2x = -2 -8
2x = -10
x = -10/2
x = -5
answer x = -2 and y = -5

check:

2(-5)- 4(-2) = -2
-10 +8 = -2
-2 = -2.....true

2x + 3y = -16
2(-5)+3(-2) = -16
-10 + (-6) = -16
-16 = -16...true


3 0
3 years ago
SET ME DA ANSWERRRZZZ PLEASE!!!
inna [77]

Answer:

I believe it is 42cm^2  

8 0
3 years ago
Which algebraic expression is a polynomial?
AlexFokin [52]

Answer:

the second option is the correct answer

6 0
2 years ago
Find the differential of each function. (a) y = tan( 5t ) dy = Correct: Your answer is correct. (b) y = 5 − v2 5 + v2
Trava [24]

Answer:

(a)  dy = 5sec^2(5t) \ dt

(a) \ dy = \frac{-20v}{(5+v^2)^2} \ dt

Step-by-step explanation:

Given;

(a) y = tan(5t)

(b) \ y = \frac{5-v^2}{5+v^2}

Solving for (a)

y = tan(5t)

let u = 5t          

⇒y = tan(u)

du/dt = 5

dy/du = sec²u

\frac{dy}{dt} =\frac{dy}{du} *\frac{du}{dt} \\\\\frac{dy}{dt} = sec^2(u)*5\\\\\frac{dy}{dt} = 5sec^2(u)\\\\\frac{dy}{dt} = 5sec^2(5t)

dy = 5sec^2(5t) \ dt

Solving for b;

let u = 5 - v²

du/dv = -2v

let v = 5+ v²

dv/du = 2v

\frac{dy}{dv} = \frac{vdu - udv}{v^2} \\\\\frac{dy}{dv} = \frac{-2v(5+v^2) - 2v(5-v^2)}{(5+v^2)^2}\\\\\frac{dy}{dv} = \frac{-10v-2v^3-10v+2v^3}{(5+v^2)^2}\\\\

\frac{dy}{dv} = \frac{-10v-10v}{(5+v^2)^2}\\\\\frac{dy}{dv} = \frac{-20v}{(5+v^2)^2}\\\\dy = \frac{-20v}{(5+v^2)^2} dt

4 0
3 years ago
Find the final price of a $849.99<br> laptop with 6% sales tax.
denis-greek [22]

Answer:

$900.9

Step-by-step explanation:

Find the final price of a $849.99

laptop with 6% sales tax.

Given data

Price= $849.99

Tax = 6%

Let us find the amount of the tax

=6/100*849.99

=0.06*849.99

=$50.9994

Now the final price is

=50.9994+849.99

=$900.9

6 0
3 years ago
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