3 years ago

Solve using the elimination method. 5r-2s=21 & 2r+5s=20

1 answer:

5 0

I hope this is correct. I solved it using the addition elimination method. The answer is s= 2, and r= 5. I hope that was helpful.

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What is the triangle for these measurements?

cestrela7 [59]

<u>Step-by-step explanation:</u>

If no sides of a triangle are congruent (equal) then it is SCALENE

If two sides of a triangle are congruent (equal) then it is ISCOSCELES

If all sides of a triangle are congruent (equal) then it is EQUILATERAL

90, 35, 55: no sides are congruent = SCALENE

700, 550, 550: two sides are congruent = ISCOSCELES

350, 400, 1000: no sides are congruent = SCALENE

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1200, 300, 300: two sides are congruent = ISCOSCELES

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3 years ago

john currently has $50 in savings. he had been saving $8 each week. yesterday he spent $142 of the savings. for how many weeks h

anastassius [24]

Answer:

24 weeks

Step-by-step explanation:

He now has $50.

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Before spending the $142, he had a total of

$142 + $50 = $192

He had saved a total of $192.

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He saved for 24 weeks.

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4 years ago

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The depth of the water at the end of a pier changes periodically along with the movement of tides. On a particular day, low tide

kenny6666 [7]

The depth of the water at the end of a pier changes peri along with the movement depth 12.009 am or two

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2 years ago

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Please I really need help with these

MrRissso [65]

Answer:

Idk lol

Step-by-step explanation:

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4 years ago

Find the sum of the first 10 terms of the following series, to the nearest integer.

Alona [7]

Answer:

Step-by-step explanation:

you can see this is a geometric progression which a ratio of ${2\over{5}}$ . the sum of the firs n term is:

$S=a_1\frac{(1-r^n)}{(1-r)}=175\frac{1-(\frac{2}{5})^{10}}{1-\frac{2}{5}}=291.6360832$

the nearest integer would be:

292

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3 years ago