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Semenov [28]
3 years ago
7

one number is equal to the square of another. find the numbers if both are positive and their sum is 1122

Mathematics
1 answer:
statuscvo [17]3 years ago
4 0

Answer:

One number is 561

The other number is 23.6854

Step-by-step explanation:

x = y^2                One number = the square of another

x + y^2 = 1122     The sum of the two numbers is 1122

Substitute y^2 in for x on the second equation.

y^2 + y^2 = 1122    Combine like terms on the left

2y^2 = 1122            Divide by 2

y^2 = 1122/2

y^2 = 561                Take the square root of both sides.

y = 23.6854            

x = y^2

x = 561

y^2 = 561


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7. how many tiles measuring
Margaret [11]

Answer:

245 tiles

Step-by-step explanation:

1 meter = 100 cm

Area of bathroom = 3.5m x 2.8m = 350x280 = 9800 cm²

Area of each tile = 20cm x 20cm = 400 cm²

Total number of tiles required = 9800/400 = 245

<u>Note</u>

Strictly speaking we have to find out how many tiles can be fitted in the length and breadth of the bathroom. Since the bathroom is 350 cm wide, we can fit 350/20cm = 17.5 tiles. However, there is no concept of 1/2 tile so the question has an ambiguity. along the width, we can fit 280/10 = 14 tiles

17.5 x 14 = 245 but if the question is reworded to how many tiles do we need to purchase to floor the bathroom it would be 18 x 14 = 252

5 0
2 years ago
skyalr makes turkey sandwiches for a family. he purchases 5 pounds 4 ounces of sliced Turkey for $26.88.what is the unit cost pe
algol [13]

Answer:

$0.32/ounce

Step-by-step explanation:

Total cost of Turkey - $26.88

Amount Purchased - 5 pounds 4 ounces

16 ounces in a pound

5 x 16 + 4 = 84

\frac{84x}{84} = \frac{26.88}{84}

x = $0.32

7 0
3 years ago
Find the value of x.<br> 7<br> Х<br> 3<br> Z<br> x= [?]<br> V<br> Give your answer in simplest form.
mixas84 [53]

Answer:

21

Step-by-step explanation:

y^2=7*3\\y^2=21\\y^2=\sqrt{21}

4 0
3 years ago
A bird (b) is spotted flying 900 feet from an observer. the observer (o) also spots the top of a tower (t) at a height of 200 fe
Svetach [21]

Angle of depression = 12.52°

The right angle triangle formed has a height of 200 ft and a base of 900 ft.

The opposite side of the triangle is 200 ft while the adjacent side of the triangle is 900 ft.

Using tangential ratio we can find the angle of depression. Therefore,

Let

x = angle of depression

tan x = opposite/adjacent

opposite = 200 ft

adjacent = 900 ft

tan x = 200/900

tan x = 2/9

x = tan⁻¹ 2/9

x = tan⁻¹ 0.222

x = 12.5166739144

x = 12.52°

To learn more about angle of depression from the given link

brainly.com/question/16772926

#SPJ4

3 0
2 years ago
Which of the following is a correct interpretation of the expression 2 + 72+72, plus, 7?
Soloha48 [4]

Answer:

Im not sure but im pretty sure it is 9+144

Step-by-step explanation:

3 0
3 years ago
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