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3 years ago

Find the value of x please!!!

Mathematics

1 answer:

pav-90 [236]3 years ago

4 0

Answer:

your answer is 20 because you subtract 110 by 90 because that is a right angles and all right angles are 90 degrees.

Step-by-step explanation:

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3 years ago

What mass error (in mg, round to the nearest tenth) would occur in the weighing of 450 mg of a drug if the uncalibrated balance

Lubov Fominskaja [6]

Answer: 67.5

Step-by-step explanation:

Given: The mass of drug = 450 mg

The mass percent error = 15%

Which can be written as 0.15.

We use the formula :-

$\text{Error}=\text{Previous value }\times\text{Percent error}$

Similarly, $\text{Mass Error}=\text{Mass of drug }\times\text{Mass percent error}$

$\Rightarrow\ \text{Mass Error}=450\times0.15=67.5\ mg$

Hence, the mass error would be 67.5 mg.

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3 years ago

The formula to find the perimeter of a rectangle is 2L + 2W. Rewrite this expression using the distributive property.

omeli [17]

Distributive Property - 2(L + W)

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3 years ago

What is one sixth of a right angle ??

Gre4nikov [31]

In degrees, 1/6 of 90 degrees is 15 degrees.

3 0

4 years ago

Read 2 more answers

X + y = -4<br>y = -x + 5

lakkis [162]

Answer:

$(x,y)=(\frac{25}{9},-\frac{5}{9} )$

Step-by-step explanation:

$\left \{ {{x+y=-x+5} \atop {-4y=-x+5}} \right.$

Simplify the expressions

$\left \{ {{2x+y=5} \atop {x-4y=5}} \right.$

Multiply both sides by -2

$\left \{ {{2x+y=5} \atop {-2x+8y=-10}} \right.$

Eliminate one variable by adding the equations

$9y=-5$

Divided both sides by 9

$y=-\frac{5}{9}$

Substitute the value of y into the equation

$2x-\frac{5}{9} =5$

Solve the equation

$x=\frac{25}{9}$

A possible solution is

$(x,y)=(\frac{25}{9} ,-\frac{5}{9} )$

If you need help with anything else just message me.

5 0

3 years ago