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3 years ago

Choose the graph below that represents the solution to the system of equations

Mathematics

1 answer:

nasty-shy [4]3 years ago

3 0

Answer:

<h2>The solution is (1, 5)</h2>

Step-by-step explanation:

Here two equation of straight lines are given.

Two equations can intersect each other at a point.

The given equations are,

$y = 3x + 2$
$10x + 2y = 20\\ 5x + y = 10\\y = 10 - 5x$

Equating both 1 and 2 we get,

$10 - 5x = 3x + 2\\8x = 8\\x = 1$

Hence, from 1 we get, $y = 3+2 = 5$

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Find the inverse of the given relation.

Greeley [361]

Answer:

Step-by-step explanation:

first look at all the numbers in the relation.then since inverse means opposite find the answers where the numbers in the parenthesis are in the opposite order than the question. Finally look for the answer In which all the positive numbers in the parenthesis(in the given relation) are negative (on the answers)and the negative numbers (in the given relation) are positive (on the answers).

4 0

3 years ago

Write 2.31*10-^3 using scientific notation

Ludmilka [50]

<span>2.31*10-^3 using scientific notation
= 0.00231</span>

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2 years ago

2. A man buys eggs at 55kobo a score . he finds that 10% of the eggs are unsellable but sells the rest at 60kobo a dozen .find i

liubo4ka [24]

Answer:

Percentage Profit is 63.63%

Step-by-step explanation:

The man buys 440 eggs at 55 pence a score

i.e. he buys 20 eggs for 55 pence

He buys 1 egg for 55/20 = 2.75 pence

Therefore, he buys 440 eggs for = 440 × 2.75 = 1210 pence

10% eggs are unsaleable

thus he sold = 440 - 440 × 10/100 = 440 - 44 = 396 eggs

Eggs sold in dozen = 396/12 = 33

He sold 1 dozen for = 60 pence

Thus, he sold 33 dozen for = 33 × 60 = 1980 pence

Profit = 1980 - 1210 = 770 pence

% Profit = (770/1210) × 100 = 63.63%

(hope this helps can i plz have brainlist :D hehe)

3 0

2 years ago

12. What is the perimeter of a football field measuring 360 feet by 160 feet?

lakkis [162]

A football field is rectangle so each matching side has the same length. Perimeter = adding all sides

7 0

3 years ago

Read 2 more answers

Solve for the right triangle given only one side and angle

34kurt

Answer:

CD = √11 and CE = √11

Step-by-step explanation:

We know that m∠D is 45° (by using the sum of interior angles in a triangle) so therefore, ΔDCE is a 45 - 45 - 90 triangle (the 45, 45, and 90 refer to the angle measures). The ratio of sides in a 45 - 45 - 90 triangle is 1 : 1 : √2 where the 1s are the sides and the √2 is the hypotenuse. We need to solve for x in x : x : √22. If you notice that √22 = √2 * √11, we can use this to find x, therefore, x = 1 * √11 = √11 so CD = √11 and CE = √11.

8 0

3 years ago

Read 2 more answers