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3 years ago

$34 plus 7.375% sales tax =

Mathematics

1 answer:

Norma-Jean [14]3 years ago

4 0

34 x 0.07375= 2.5075

2.5075 + 34 =36.51

or

34×1.07375=36.51

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Help this is due tomorrow

Helen [10]

-4.4(s - 2) + 6.9s = 14.8

Distribute -4.4 into the parenthesis:

-4.4s + 8.8 + 6.9s = 14.8

Combine like terms:
2.5s + 8.8 = 14.8

Subtract 8.8 from both sides of the equation:

2.5s + 8.8 - 8.8 = 14.8 - 8.8

2.5s = 6

Divide both sides by 2.5:

2.5s/2.5 = 6/2,5

s = 2.4

s =

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2 years ago

What is 1/2 to the 3rd power?

Marina86 [1]

$\frac{1}{2} \ x \ \frac{1}{2} \ x \ \frac{1}{2}= \frac{1}{8}$

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3 years ago

50. If angles are complementary, what’s value of x?

maks197457 [2]

Answer:

x = 14

Step-by-step explanation:

For complementary angles, the sum of two angles is equal to 90 degrees.

We have,

$m\angle ABC = 4x-10\\\\m\angle DBC = x+30$

ATQ,

$4x-10+x+30=90$

Taking like terms together,

4x+x =90-30+10

5x = 70

x = 14

So, the value of x is 14.

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3 years ago

Tan ___ = 7<br> What's the missing value?

Inga [223]

The missing value is 81.87 degrees. This is a guess let me know if I'm wrong :)

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3 years ago

Read 2 more answers

*Be sure to simplify fractions and rationalize denominators if necessary.

m_a_m_a [10]

As given by the question

There are given that the vector:

$\vec{v}=\vec{2i}+\vec{3j}$

Now,

From the formula to find the unit vector in same direction is:

$\vec{u}=\frac{\vec{v}}{\lvert\vec{v}\rvert}$

Then,

$\begin{gathered} \vec{u}=\frac{\vec{v}}{\lvert\vec{v}\rvert} \\ \vec{u}=\frac{\vec{2i}+\vec{3j}}{\lvert\vec{2i}+\vec{3j}\rvert} \\ \vec{u}=\frac{\vec{2i}+\vec{3j}}{\lvert\sqrt[]{2^2+3^2}\rvert} \end{gathered}$

Then,

$\begin{gathered} \vec{u}=\frac{\vec{2i}+\vec{3j}}{\sqrt[]{2^2+3^2}} \\ \vec{u}=\frac{\vec{2i}+\vec{3j}}{\sqrt[]{4+9}} \\ \vec{u}=\frac{\vec{2i}+\vec{3j}}{\sqrt[]{13}} \end{gathered}$

Then,

Rationalize the denominator:

So,

$\begin{gathered} \vec{u}=\frac{\vec{2i}+\vec{3j}}{\sqrt[]{13}} \\ \vec{u}=\frac{\vec{2i}+\vec{3j}}{\sqrt[]{13}}\times\frac{\sqrt[]{13}}{\sqrt[]{13}} \\ \vec{u}=\frac{\vec{\sqrt[]{13}(2i}+\vec{3j})}{13} \\ \vec{u}=\frac{2\sqrt[]{13}}{13}i+\frac{3\sqrt[]{13}}{13}j \end{gathered}$

Hence, the unit vector is shown below:

$\vec{u}=\frac{2\sqrt[]{13}}{13}i+\frac{3\sqrt[]{13}}{13}j$

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1 year ago