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3 years ago

What is the simplified value of the expression below? 12.4 x (-6.3)

Mathematics

2 answers:

jenyasd209 [6]3 years ago

5 0

I got -78.12, because I need 20 characters

Rainbow [258]3 years ago

3 0

Answer:

-78.12

12.4*(-6.3)

12.4 groups of -6.3

Use long multiplication

Let me know about any more questions

Happy to help...

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The coefficient o 9(14) is

STatiana [176]

Answer:

125

Step-by-step explanation:

9x14=125 ...........

7 0

3 years ago

PLEASE HELP ASAP!!! I NEED CORRECT ANSWERS ONLY PLEASE!!!

Tresset [83]

The measure of the angle R is $m \angle R=69.4$

Explanation:

It is given that the lengths of the triangle are PQ = 8 and QR = 3

To find the angle of R using the opposite and adjacent side, we shall use the tangent formula.

$\tan \theta=\frac{o p p}{a d j}$

where opp = 8 and adj = 3

Thus, substituting these values in the formula, we get,

$\tan \theta=\frac{8}{3}$

Multiplying both sides by $tan^{-1}$ , we get,

$\theta=tan^{-1} (\frac{8}{3})$

Dividing, we get,

$\theta=69.44$

Rounding off to the nearest tenth, we have,

$\theta=69.4$

Thus, the measure of the angle R is $m \angle R=69.4$

7 0

3 years ago

What’s 6.71 in scientific notation

vladimir1956 [14]

The scientific notation for numbers between
1 and 10 is the same as regular notation.

Answer
6.71 • 0

5 0

3 years ago

Read 2 more answers

Rewrite the function by completing the square. 4x^2-4x+1=0

andrey2020 [161]

Do in completing the square method.

${4x}^{2} - 4x + 1 = 0 \\ 4x^{2}-4x=-1 \\ \frac{4x^{2}-4x}{4}=\frac{-1}{4} \\ x^{2}+\frac{-4}{4}x=\frac{-1}{4} \\ x^{2}-x=\frac{-1}{4} \\ x^{2}-x+\left(-\frac{1}{2}\right)^{2}=-\frac{1}{4}+\left(-\frac{1}{2}\right)^{2} \\ x^{2}-x+\frac{1}{4}=\frac{-1+1}{4} \\ x^{2}-x+\frac{1}{4}=0 \\ \left(x-\frac{1}{2}\right)^{2}=0 \\ \sqrt{\left(x-\frac{1}{2}\right)^{2}}=\sqrt{0}$

Now simplify.

$x-\frac{1}{2}=0 \\ x-\frac{1}{2}=0 \\ \\ \rightarrow \: x=\frac{1}{2} \\ \rightarrow \: x=\frac{1}{2}$

So, answer is..

$\boxed{x=\frac{1}{2} }$

Now rewrite the equation.

$4 x ^ { 2 } - 4 x + 1 = 0 \\ \boxed{4\times \left(\frac{1}{4}\right)-4\times \left(\frac{1}{2}\right)+1=0 }$

Verification :-

$4 x ^ { 2 } - 4 x + 1 = 0 \\ 4\times \left(\frac{1}{4}\right)-4\times \left(\frac{1}{2}\right)+1=0 \\ 1-4\times \left(\frac{1}{2}\right)+1=0 \\ 1-\frac{4}{2}+1=0 \\ 1-2+1=0 \\ -1+1=0 \\ \underline{ 0 = 0} \: \\ \dashrightarrow \text{true}$

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3 years ago

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liubo4ka [24]

Answer:

1.trapezoid

parallelogram

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3 years ago