All categories

3 years ago

A.

Mathematics

1 answer:

zhenek [66]3 years ago

4 0

Answer:

640 cm³

Step-by-step explanation:

Each prism has a volume of (4 cm) (4 cm) (20 cm) = 320 cm³.

There are two prisms, so the total volume is 640 cm³.

You might be interested in

A group of young businesswomen wish to open a high fashion boutique in a vacant store, but only if the average income of househo

vova2212 [387]

Answer:

Based on the results the boutique could be located there.

Step-by-step explanation:

Note: The average income (the mean) is calculated by summing the total incomes then divided by the total sample–9.

The mean ù (average income) = $28,000 + $24,000 + $26,000 + $25,000 + $23,000 + $27,000 + $26,000 + $22,000 + $24,000= $225,000/9= $25,000 (which is ≥ $25,000.

Based on the results of the p-value, using the 5% significant level we fail to reject the null hypothesis (ú≥25,000).

7 0

3 years ago

Mhmhmhmhmhmhmhmhmhmhmhmh

yarga [219]

Answer:

3.59

Step-by-step explanation:

-×-=+

-2.31+5.9

=3.59

please like and Mark as brainliest

5 0

3 years ago

Deisha can build a fence in 15 hours, and Travis can build a fence in 12 hours. How long will it take them together to build a f

Basile [38]

Answer:

6 $\frac{2}{3}$

Step-by-step explanation:

Deisha's build rate = 1 fence per 15 hours = 1/15 fences per hour

Travis's build rate = 1 fence per 12 hours = 1/12 fences per hour

Working together, their combined rate is 1/15 + 1/12 = 3/20 fences per hour

So it takes them 20/3 = 6 2/3 hours per fence

6 0

3 years ago

If the interest earned on an account after 7 years at 6% is $1785 ,what is the initial value

gayaneshka [121]

Answer:

$4250

Step-by-step explanation:

i = prt

p = i / rt

where,

i = $1,785

r = 6% = 0.06

t = 7 years

So, we can calculate initial vale by putting the values in above equation;

p = $1,785 / (0.06 x 7)

p = $1,785 / 0.42

p = $4,250

Hence the initial value will be $4250

8 0

3 years ago

Seventy dash fiveSeventy-five percent of households say they would feel secure if they had $50,000 in savings. You randomly sel

Tresset [83]

A) 0.2076
B) 0.6786
C) 0.3214

Explanation:
A) $P(X=5)=_8C_5(0.75)^5 \times(1-0.75)^{8-5}
\\
\\=_8C_5(0.75)^5 \times (0.25)^3=0.2076$
B) We find the probability that X=6, 7, or 8:
$P(X=6)=_8C_6(0.75)^6(0.25)^2=0.3115
\\
\\P(X=7)=_8C_7(0.75)^7(0.25)^1=0.267
\\
\\P(X=8)=_8C_8(0.75)^8(0.25)^0=0.1001
\\
\\0.3115+0.267+0.1001=0.6786$
C) P(X≤5) = 1-P(X>5) = 1-0.6786 = 0.3214

5 0

3 years ago