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2 years ago

What is the value of s?

Mathematics

1 answer:

sveta [45]2 years ago

4 0

Use Ga_thMath(u) (brainly doesn't allow me to type it) To use the app u need to take a pic of the problem and then it will process it and you'll get ur answer ASAP(most of the time). Many questions have been asked before so search it on brainly.

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How do you know what number to multiply everything by using the elimination method on systems of equations??

Marrrta [24]

Answer:

See below

Step-by-step explanation:

You multiply the equations by numbers that will give you the least common multiple of the coefficients.

Suppose you have a system of two equations:

$\begin{cases}(1)& 2x + y = 40\\(2) & x + 2.5y = 60\end{cases}\\$

You can choose to eliminate either x or y.

1. Eliminating x

The coefficients of x are 2 and 1. The least common multiple is 2, so you multiply (1) by 1 and (2) by 2 to get

$\begin{array}{lrcll}(3) & 2x + y & = & 40 &\ \\(4) & 2x + 5y & = & 120 & }\\\end{array}$

Then you can subtract (3) from (4) and get

4y = 80. Solve for y.

2. Eliminating y

The coefficients of y are 1 and 2.5. The least common multiple is 2.5, so you multiply (1) by 2.5 and (2) by 1 to get

$\begin{array}{lrcll}(5) & 5x + 2.5y & = & 100 &\ \\(6) & x + 2.5y & = & 60 & }\\\end{array}$

Then you can subtract (6) from (5) and get

4x = 40. Solve for x.

8 0

2 years ago

antonio measures items in his pocket he knows there are 50 millimeters in 5 centimeters his key chain is 3.5 centimeters long hi

elixir [45]

Answer:

zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz

Step-by-step explanation:

7 0

2 years ago

Can someone help me? Ive chosen the last cube.

Setler79 [48]

There are 6 cubes in the last figure. Just count them
The volume of each cube individually is 1 so 6 * 1 = 6 units cubed

4 0

2 years ago

As the guest was sneaking away, the grounds keeper was 4 feet(48 inches) away and pushed an 84 inch ladder onto the suspect. The

N76 [4]

To solve this problem, draw the situation for a better comprehension:

As we can see, the situation describes a right triangle and we can use pythagorean theorem to solve it.

To do this, use the corresponding units.

For inches:

$\begin{gathered} h=\sqrt[]{84^2-48^2} \\ h=\sqrt[]{7056-2304} \\ h=\sqrt[]{4752} \\ h=68.9 \end{gathered}$

The suspect is 68.9 inches high.

Convert this height to feet:

$68.9in\cdot(\frac{1ft}{12in})=5.74ft$

The suspect is 5.74 feet high.

5 0

11 months ago

Divide $28 in the ratio 5:2:7.

Nina [5.8K]

Answer:

Step-by-step explanation:

5+2+7=14

28/14=2

2*5=10

2*2=4

2*7=14

10:4:14

8 0

2 years ago

What is the value of s?​

What is the value of s?