Cannnn someone help me

Mathematics

1 answer:

Eva8 [605]2 years ago

4 0

Answer:

55 ft... The ladder must extend 55ft

Step-by-step explanation:

$c = \sqrt{a ^{2} + b ^{2} } \\ = \sqrt{33 ^{2} + 44 ^{2} } \\ = \sqrt{1089 + 1936 } \\ = \sqrt{3025} \\ c = 55$

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Country A produces eight times the amount of diamonds in carats produced in country B. If the total produced in both countries i

iren [92.7K]

Answer:

A=8,000,000

B=1,000,000

Step-by-step explanation:

A=8B

A+B=9,000,000

8B(because A=8B)+B=9,000,000

9B=9,000,000

B=1,000,000

A=8*B=8*1,000,000=8,000,000

6 0

3 years ago

Which of the following equations represents a line that is perpendicular to

Andreyy89

Answer:

$\large\boxed{y=\dfrac{1}{2}x}$

Step-by-step explanation:

$\text{Let}\\\\k:y=m_1x+b_1\\\\l:y=m_2x+b_2\\\\l\ \perp\ k\iff m_1m_2=-1\to m_2=-\dfrac{1}{m_1}\\\\l\ \parallel\ k\iff m_1=m_2\\\\===============================$

$\text{We have the equation:}\ y=-2x+4\to m_1=-2.\\\\\text{Therefore}\ m_2=-\dfrac{1}{-2}=\dfrac{1}{2}.\\\\\text{We have the equation:}\ y=\dfrac{1}{2}x+b.\\\\\text{Put the coordinate of the point (4, 2) to the equation:}\\\\2=\dfrac{1}{2}(4)+b\\\\2=2+b\qquad\text{subtract 2 from both sides}\\\\0=b\to b=0.\\\\\text{Finally:}\\\\y=\dfrac{1}{2}x$