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3 years ago

7

Solve the system of equations by elimintion express the solution as and order paired

1 answer:

tester [92]3 years ago

3 0

First convert the first equation to combine like terms. Then set your equations up as an addition problem. You want at least one of your variables (y) to be of opposite values so the will cancel out to leave you with just one variable (x). Plug in 1/3 for the x into one of the equations to solve for y. Then write as an ordered pair.

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99/100 * 0.4......<br> please solve this ASAP

nekit [7.7K]

Answer is 0.396
To make it easier, I converted the fraction to a decimal (0.99), then multiplied 0.99 • 0.4 which will equal 0.396 or 99/250.

5 0

3 years ago

So I was wondering how to do this, 15-<img src="https://tex.z-dn.net/?f=%5Csqrt%7Bx%2B2%7D" id="TexFormula1" title="\sqrt{x+2}"

Yuki888 [10]

Answer:

Step-by-step explanation:

The question makes sense for all values of x, but I imagine that is not exactly what you mean.

I think you mean for what values of x does the question produce a real square root?

The answer is as long as x + 2 does not drop below 0, the results will be real.

Put mathematically x ≥ -2 gives a real result. For now just don't try and take the square root of a minus number.

6 0

2 years ago

Read 2 more answers

Can someone please help? Thank you :)

Rudik [331]

The value of x is 8.

Solution:

Given $\triangle V D G \sim \triangle V N Q$ .

DG = 60, NQ = 48, DN = 15, NV = x + 4

<u>To find the value of x:</u>

<em>Property of similar triangle:</em>

If two triangles are similar then the corresponding angles are congruent and the corresponding sides are in proportion.

$$\Rightarrow\frac{DG}{NQ} =\frac{DN}{NV}$

$$\Rightarrow\frac{60}{48} =\frac{15}{x+4}$

Do cross multiplication.

$$\Rightarrow60(x+4)=15\times48$

$$\Rightarrow60x+240=720$

Subtract 240 from both side of the equation.

$$\Rightarrow60x+240-240=720-240$

$$\Rightarrow60x=480$

Divide by 60 on both sides of the equation.

$$\Rightarrow\frac{60x}{60} =\frac{480}{60}$

$$\Rightarrow x=8$

Hence the value of x is 8.

5 0

3 years ago

Use substitution to solve the following pairs of simultaneous equation for x and y in terms of m and n.

Effectus [21]

Answer:

;-; that's easy that 5th grade math for me

4 0

3 years ago

faltersainse [42]

Answer:

Potato

Step-by-step explanation:

1 kg = 1000 g

Assuming the potatoes have the same mass, and the pears have the same mass, then the mass of each potato is:

1000 g / 5 = 200 g

And the mass of each pear is:

1200 g / 8 = 150 g

So a potato has more mass than a pear.

8 0

3 years ago