20 points! I really need your help here.

Mathematics

1 answer:

inessss [21]4 years ago

4 0

Find the volumes og each box

Single serving box = 1/2 * 7 *3 * 9 = 94.5 cm^3

Family size = 1/2 * 8 * 3 * 16 = 192 cm^3

Find the cost by unit volume:- single costs 1.25 / 94.5 = 0.013228
family costs 2.5 / 192 0.01302

So the family bar costs less by unit volume and is the better buy.

You might be interested in

Along the Oregon trail the trading post in fort Laramie, Wyoming, sold a 16 pound of beef je rky for 5.92 what was the cost per

MaRussiya [10]

You need to divide the amount from the quantity
So 5.92 divide by 166= $0.37 per pound.

3 0

4 years ago

In order for the parallelogram to be a rhombus, x=?

stealth61 [152]

$\\ \large\sf\longmapsto x + 15 = 2x - 40 \\ \\ \large\sf\longmapsto x - 2x = - 40 - 15 \\ \\ \large\sf\longmapsto - x = - 55\\ \large\sf\longmapsto x = 55$

6 0

3 years ago

Read 2 more answers

The expression 2x + 50 represents the elevation above sea level, in meters, of a rock climber after x minutes of climbing. What

vova2212 [387]

We let y equal to the elevation above sea level so that the elevation of the rock climber after x minutes of climbing would be:

y = 2x + 50

His initial height can be calculated when x is equal to zero it is when the climber is not yet climbing. Therefore, the rock climber'sinitial height above sea level would be 50 meters.

7 0

3 years ago

Two distinct solid fuel propellants, type A and type B, are being considered for a space program activity. Burning rates of the

Finger [1]

Answer:

C.I. = (2.297, 11.703)

Step-by-step explanation:

The t-statistic for difference of mean is given by,

$t=\frac{\bar{x_{1}}-\bar{x_{2}}}{\sqrt{\frac{s_{1}^{2}}{n_{1}}+\frac{s_{2}^{2}}{n_{2}}}}$

Here, $\bar{x_{1}}$ = 84

$\bar{x_{2}}$ = 7

s₁ = 4

n₁ = 12

s₂ = 6

n₂ = 18

Substituting all value in formula,

We get, t = -3.541 at 28 degree of freedom.

Using this formula, we get, t = 1.5342

Therefore, based on the data provided, the 99% confidence interval for the difference between the population means $\bar{x_{1}}-\bar{x_{2}}$ is: 2.297 < $\bar{x_{1}}-\bar{x_{2}}$ < 11.703