If 7 pounds of flour costs $13, what is the price per pound? *

Mathematics

2 answers:

mestny [16]4 years ago

7 0

1.86 c. You would divide 13 by 7 and get 1.857..... and you would round it to 1.86:)

olga_2 [115]4 years ago

3 0

You would do 13 divided by 7 which is 1.8571, but you have to simplify, to the nearest hundredth. So 7 is greater than 5 so the answer would be $1.86

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What is the main advantage of using money instead of bartering? A. Many more people today use money than bartering to get goods

alekssr [168]

D. people do not have to have a good or service that another person wants

Reason: Money gives people a universal unit of value. For example, If I needed a toothbrush and I have a pair of scissors, In order for me to get a tooth brush is to trade my scissors with someone else who has a tooth brush and wants scissors. As you can see, this isn't practical. If I had money, I will only need to find someone who has a tooth brush.

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3 years ago

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In trapezoid ABCD AC is a diagonal and ∠ABC ≅ ∠ACD. Find AC if the lengths of the bases BC and AD are 14m and 28m respectively.

krek1111 [17]

Answer:

AC = 14 sqrt(2) = 19.80

Step-by-step explanation:

Below is the diagram showing you how this has been set up. The figure is a trapezoid which means BC and AD are parallel. AC is a transversal of the parallel lines.

Givens

<ABC = <ACD
ABCD is a trapezoid
BC = 14
AD = 28
AC is a transversal of BC and AD

Solution

<ABC = <ACD Given
<DAC = <ACB Alternate interior angles.
ΔACB ≅ΔDAC AA
<BAC = <ADC Angles of similar triangles are equal
AC /28 = 14/AC Form a proportion from corresponding sides
AC*AC = 14 * 28 Cross multiply the proportion. Combine
AC^2 = 392 Express as prime factors.
AC^2 = 7*7*2*2*2 Take the square root of both sides
sqrt(AC)^2 = sqrt(7*7*2*2*2)
AC = 7*2 * sqrt(2)
AC = 14 sqrt(2) = 19.80

8 0

3 years ago

Hey can you please help me posted picture of question

Kazeer [188]

The answer should be C because it's 50 - 18 - 16 - 8, which equals 8.

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3 years ago

Robert needs to cut four shelves from a board that is 2.5 meters long. The second shelf is 18 centimeters longer than twice the

cupoosta [38]

1 m = 100 cm....so 2.5 m = (2.5 * 100) = 250 cm

a = 1st shelf
b = 2nd
c = 3rd
d = 4th

a + b + c + d = 250
b = 2a + 18
c = a - 12
d = a + 4

a + (2a + 18) + (a - 12) + (a + 4) = 250
5a + 10 = 250
5a = 250 - 10
5a = 240
a = 240/5
a = 48 cm <== 1st shelf

b = 2a + 18 = 2(48) + 18 = 114 cm <== 2nd shelf
c = a - 12 = 48 - 12 = 36 cm <== 3rd shelf
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so 2nd shelf is 114 cm

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3 years ago

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On a coordinate plane, a line is drawn from point A to point B. Point A is at (7, negative 2) and point B is at (negative 8, neg

horrorfan [7]

Answer:

(1.2. - 4.7)

Step-by-step explanation:

On a coordinate plane, a line is drawn from point A to point B. Point A is at (7,-2) and point B is at (-8,-9).

Now, it is asked the x- and y-coordinates of point C, which partitions the directed line segment from A to B into the ratio 5:8.

So, the coordinates of point C are

$[\frac{5 \times (- 8) + 8 \times 7}{5 + 8}, \frac{5 \times (- 9) + 8 \times (- 2)}{5 + 8}]$