3 years ago

Estimate the sum by rounding the numbers to the nearest hundred and then adding: 539 + 221

Mathematics

1 answer:

Zina [86]3 years ago

5 0

Answer:

700

Step-by-step explanation:

539 rounded to 500

221 rounded to 200

500 plus 200 is 700

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The length of a rectangle is 18 cm less than five times it's width. It's area is 35 cm². Find the dimensions of the rectangle.

Aleksandr-060686 [28]

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3 years ago

Kellie currently has an average of 75 in her English class. If her grade is the mean of all her assignments, what would a grade

andriy [413]

Answer:

I just summited it, it was "Her mean grade would go up".

Step-by-step explanation:

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3 years ago

A ladder is leaning against a vertical wall. The distance from the top of the ladder to the base of the wall is 17 feet. The dis

Gennadij [26K]

Answer:

18.4 feet

Step-by-step explanation:

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3 years ago

Trigonometry that’s due in one hour :(

expeople1 [14]

Answer:

(a) $\theta=\tan^{-1}(-0.890)$

$\implies \theta=-41.66908262 \pm 180 \textdegree n$

$\implies \theta=138.3309174..., 318.3309174...$

$\implies \theta=138\textdegree, 318\textdegree$

(b) $\theta=\cos^{-1}\left(\dfrac{\sqrt{3} }{2}\right)$

$\implies \theta=30 \textdegree \pm360 \textdegree n, 330 \textdegree \pm360 \textdegree n$

$\implies \theta=30 \textdegree , 330 \textdegree$

$\implies \theta=30 \textdegree \pm360 \textdegree n, 150 \textdegree \pm360 \textdegree n$

$\implies \theta=30 \textdegree , 150 \textdegree$

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2 years ago

Solve for x, given that the triangles are similar.

ELEN [110]

Im not sure but you cam try adding 15+9 which is 24

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3 years ago