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3 years ago

PLEASE HELP DUE SOON 60 POINTS, EASY WORK!

Mathematics

1 answer:

Sergio [31]3 years ago

4 0

Answer:-2, 4, -4

Step-by-step explanation:

Graph

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Nicole sold 1 cherry pie and 9 pumpkin pies for $60. Lisa sold 11 cheery pies and 4 pumpkin pies for $90. what's the cost each o

bogdanovich [222]

Cherry pie is $ C.
Pumpkin pie is $ P.

C + 9P =60 -------> C=60 - 9P
11C+4P = 90

11(60 - 9P) +4P=90
660 - 99P + 4P = 90
-95P = -570
P =570/95 = 6
P=6
C=60-9*P=60 - 9*6= 60-54=6
C=6

Answer: 1 cherry pie -$6, 1 pumpkin pie - $6.

Check:
11C+4P = 90 , 11*6 +4*6 =90, 66+24=90, 90=90 True

8 0

3 years ago

This problem models pollution effects in the Great Lakes. We assume pollutants are flowing into a lake at a constant rate of I k

Alenkasestr [34]

Answer:

C(t) = I/F [1 - e^(-Ft/V) ] + C₀e^(-Ft/V)

as t = 0 ; C(t) = 1/F

Explanation:

dC/dt) = (-F/V)*C+(I/V)

To make it easier to solve, let

Constants: I, V,F

Variables: C, t

workings and solution can be viewed below

8 0

4 years ago

Find.................

natka813 [3]

Its -7

use https://www.symbolab.com/solver/algebra-calculator

3 0

4 years ago

Where e is enclosed by the planes z = 0 and z = x + y + 9 and by the cylinders x2 + y2 = 4 and x2 + y2 = 16?

katrin [286]

Best to use cylindrical coordinates. The volume (assuming that's what you're supposed to find) of the region is given by the triple integral

$\displaystyle\iiint_E\mathrm dV=\int_{\theta=0}^{\theta=2\pi}\int_{r=2}^{r=4}\int_{z=0}^{z=r(\cos\theta+\sin\theta)+9}r\,\mathrm dz\,\mathrm dr\,\mathrm d\theta$
$=\displaystyle\int_{\theta=0}^{\theta=2\pi}\int_{r=2}^{r=4}(r^2(\cos\theta+\sin\theta)+9r)\,\mathrm dr\,\mathrm d\theta$
$=108\pi$

4 0

3 years ago

A student bought two juice pouches for $1.25 each and 3 bags of chips. The total cost was $5.05 .write and solve an equation to

NARA [144]

Answer:

The cost of each bag of chip is $0.85

Step-by-step explanation:

Given as :

The cost of one juice pouch = $1.25

The number of juice pouch = 2

The number of chips bag bought = 3

The total cost of 2 juice pouch and 3 chips bag = $5.05

Let The cost of each bag of chip = $c

<u>Now, According to question</u>

cost of one juice pouch × number of juice pouch + cost of each chips bag × number of chips bag = Total cost of both items

Or, $1.25 × 2 + $c × 3 = $5.05

Or, $2.5 + $c × 3 = $5.05

Or, $c × 3 = $5.05 - $2.5

Or, $c × 3 = $2.55

∴ c = $\dfrac{2.55}{3}$

i.e c = $0.85

So, The cost of each bag of chip = c = $0.85

Hence,The cost of each bag of chip is $0.85 Answer

8 0

3 years ago