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3 years ago

Will mark BRAINLIEST and give ALL OF MY POINTS!!! Pls help asappp!!!! Tysm!

Mathematics

1 answer:

sdas [7]3 years ago

4 0

Answer:

$125
$65, $65, $65 -- they are all the same

Step-by-step explanation:

The quantity of food required for the two cats for one day is ...

(3/4 can) + (1/2 can) = (3/4 +2/4) can = 5/4 can

Then the cost per day for cat food is ...

$5/(3 cans) × (5/4 can/day) = $25/12 /day

We note that the cost for some number of days will be the product of this factor and the number of days, rounded up to the next higher $5.

1. The cost for 60 days is ...

(60 days)($25/12 /day) = $25 × 60/12 = $125

A 60-day supply of cat food costs $125.

2. A 29-day supply costs ...

(29 day) × $25/12 /day = $60 5/12, rounds up to $65 for 29 days

A 30-day supply costs ...

(30 day) × ($25/12 /day) = $62.50, rounds up to $65 for 30 days

A 31-day supply costs ...

(31 days) × ($25/12 /day) = $64 7/12, rounds up to $65 for 31 days.

These costs are all the same.

_____

3 cans last, on average, 2 2/5 days. That means some purchases of 3 cans will last for 2 days, and some will last for 3 days. It so happens that the purchase made to cover day 29 will also cover day 30 and day 31.

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According to the journal of irreproducible results, any obtuse angle is a right angle! c d b p here is their argument. given the

nevsk [136]

Answer:

The mistake stems from the assumption that angle dab and abc are both 90 and ad = bc and that the perpendicular bisector of dc is different from the perpendicular bisector to ab because they are the same and abcd is a rectangle.

Step-by-step explanation:

If ∡dab = ∡abc and side ab is equal to side bc which are opposite sides, ten then ab is parallel to bc which means the quadrilateral is parallelogram. Also since two angles of the four angles of the parallelogram are 90 degrees then the parallelogram is a rectangle.

The bisector of one side of a rectangle will also bisect the opposite side of the rectangle. Therefore the bisector of dc is the same as the bisector of ab and it meets ab at the midpoint of ab. Therefore p is now at the midpoint of ab and there are no triangles pad and pbc.

5 0

4 years ago

An instructional video is 7.8 minutes ling how ling is the video in ? how long is it in hours?

stich3 [128]

Answer:

0.13 hours

468 seconds

Step-by-step explanation:

7.8 min= 7.8/60= 0.13 hours

7.8 min= 7.8x60= 468 seconds

3 0

3 years ago

PLEASE HELP ME NOW MUTIPLUE CHOICE

harina [27]

Answer:

according to my calculations

Step-by-step explanation:

cheese

6 0

3 years ago

a surveyor measures the distance to the two landmarks as shown in the diagram what is the distance d. between the landmarks

Inessa [10]

<h3>The distance between two landmarks is 123 meters</h3>

Solution:

We have to find the distance between two landmarks

Use the law of cosines

The third side of a triangle can be found when we know two sides and the angle between them

$c^2 = a^2 + b^2 - 2ab\ cos c$

Here, angle between 90 meters and 130 meters is 65 degrees

From figure,

a = 90

b = 130

c = d

Therefore,

$d^2 = 90^2 + 130^2 - 2(90)(130)\ cos 65\\\\d^2 = 8100 + 16900 - 23400\ cos\ 65\\\\d^2 = 25000 - 23400 \times 0.4226\\\\d^2 = 25000 - 9889.267\\\\d^2 = 15110.73\\\\d = 122.92\\\\d \approx 123$

Thus, the distance between two landmarks is 123 meters

8 0

4 years ago

Y = -1/3x + 3 2x - 3y = -18 pls explain and tell the answer :(

Crazy boy [7]

Answer:

-18=2x-3(-1/3x+3)

-18=2x+x-9

-18=3x-9

-18+9=3x

3x=-9

x=-9

y=-3(-1/3)+3

y=1+3

y=4

3 0

3 years ago