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Citrus2011 [14]
3 years ago
9

Negative three eighth minus one tenth A. 19/40 B. -19/40 c.-3/8 D. 2/9

Mathematics
2 answers:
djverab [1.8K]3 years ago
7 0
B. -19/40 is the answer.
xxMikexx [17]3 years ago
7 0

Answer:

B)

Step-by-step explanation:

LCM of 8,10 =40

\frac{-3*5}{8*5}=\frac{-15}{40}\\\\\frac{1*4}{10*4}=\frac{4}{10}\\\\ \frac{-3}{8}-\frac{1}{10}=\frac{-15}{40}-\frac{4}{40}\\\\=\frac{-15-4}{40}=\frac{-19}{40}

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The sum of 2 integers is 9. the product of the integers is 14 what are the integers
chubhunter [2.5K]

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3 0
2 years ago
Analyze the diagram below and complete the instructions that follow. Find a, b, and c.
ahrayia [7]

Answer:

<u>The correct answer is the letter C. </u>

Step-by-step explanation:

We can use the following trigonometric identity:

cos(60)=\frac{6}{b} (1)

cos(45)=\frac{c}{b} (2)

Solving each equation by b and equaling we have:

\frac{6}{cos(60)}=\frac{c}{cos(45)}

\frac{6}{cos(60)}=\frac{c}{cos(45)}

Let's recall that:

cos(45)=\frac{1}{\sqrt{2}}

cos(60)=\frac{1}{2}

Then we have:

c=\frac{cos(45)*6}{cos(60)}

c=\frac{2*6}{\sqrt{2}}

c=\frac{12}{\sqrt{2}}

c=6\sqrt{2}

Using equation (1) we can find b.

cos(60)=\frac{6}{b}  

b=12      

Finally, we can find a using the next equation:

tan(60)=\frac{a}{6}

a=6*tan(60)

a=6\sqrt{3}

<u>Therefore, the correct answer is the letter C. </u>

I hope it helps you!

5 0
2 years ago
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