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2 years ago

1. Set up a system to find two numbers whose sum is 18 and whose difference is 4.

Mathematics

1 answer:

Alekssandra [29.7K]2 years ago

7 0

Answer:

7 and 11

Step-by-step explanation:

Suppose the numbers are x and y.

So it is given that

x + y = 18

x - y = 4

If we add the equations, we get

2x = 22

So x is 11 and y will be 7

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Arthur starts his first workout routine by doing 10 push-ups. Each workout after the first, he plans to do 2 more push-ups than

Reptile [31]

Answer:

Step-by-step explanation:

10 + (20x2) = 50

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3 years ago

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zubka84 [21]

Answer:

v= -12

Step-by-step explanation:

v= -12

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2 years ago

Read 2 more answers

What is the opposite operation of the square root?

Andru [333]

Answer:

The opposite of multiplication is division. The opposite of division is multiplication. The opposite of taking a square root is squaring

Step-by-step explanation:

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2 years ago

Ryan set a table with a fork, knife, and spoon for each dinner guest. He used a total of 36 pieces of silverware. Which number s

Debora [2.8K]

Answer:

The Number sentence 36 ÷ 3 will be used to find number of guest invited in Ryan dinner.

There were 12 guests invited to Ryan's dinner.

Step-by-step explanation:

Given:

Total Number of pieces = 36 pieces.

Also Given:

Ryan set a table with a fork, knife, and spoon for each dinner guest.

From above we can conclude that;

Number of Piece for each Dinner guest = 3 piece.

We need to find the number of guest invited in Ryan dinner.

number of guest invited in Ryan dinner will be equal to Total Number of pieces used for guest divided by Number of Piece for each Dinner guest.

framing in equation form we get;

number of guest invited in Ryan dinner = $\frac{36}{3}=12 \ guest$

Hence The Number sentence 36 ÷ 3 will be used to find number of guest invited in Ryan dinner.

Also There were 12 guests invited to Ryan's dinner.

8 0

3 years ago

Suppose you have a water-balloon launcher. The balloon is 3 ft high when it leaves the launcher. Use the equation 0 = ?16t2 + 38

mario62 [17]

Answer:

t = 2.5 s

Step-by-step explanation:

Suppose you have a water-balloon launcher. The balloon is 3 ft high when it leaves the launcher. Its equation is :

$16t^2 + 38.8t + 3 =0$

The above equation is a quadratic equation. The general equation is :

$ax^2+bx+c=0$

Here, a = 16, b = 38.8 and c = 3

The solution of quadratic equation is given by :

$x=\dfrac{-b\pm \sqrt{b^2-4ac} }{2a}\\\\t=\dfrac{-38.8\pm \sqrt{(38.8)^2-4\times (-16)\times 3} }{2\times (-16)}\\\\t=\dfrac{-38.8+\sqrt{(38.8)^{2}-4\times-16\times3}}{-2\times16}, \dfrac{-38.8-\sqrt{(38.8)^{2}-4\times-16\times3}}{-2\times16}\\\\t=-0.075\ s,2.5\ s$

So, at t = 2.5 s the balloon is in air.

8 0

3 years ago