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3 years ago

Classify each triangle by it angle and by its sides plz help me out

Mathematics

1 answer:

Greeley [361]3 years ago

6 0

Answer:

scalene, acute

Step-by-step explanation:

plzz help mee e

A motor home starts across a lake. The lake is 7 miles long and it takes 0.5 hours to get across. What is the speed? Write a formulae and show a label.

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Divide 254 by 11.8. round your answer to the nearest hundredth.

Olin [163]

The answer is 21.52 so I hope that helped

8 0

3 years ago

Read 2 more answers

Two customers went to a post office to buy postcards and large envelopes. Each postcard

astraxan [27]

The right answer is Option A.

Step-by-step explanation:

Let,

x be the postcards

y be the large envelops

According to given statement;

14x+5y=12 Eqn 1

10x+15y=24.80 Eqn 2

Multiplying Eqn 1 by 3;

$3(14x+5y=12)\\42x+15y=36\ \ \ Eqn \ 3$

Subtracting Eqn 2 from Eqn 3;

$(42x+15y)-(10x+15y)=36-24.80\\42x+15y-10x-15y=11.20\\32x=11.20\\$

Dividing both sides by 32

$\frac{32x}{32}=\frac{11.20}{32}\\x=0.35$

Putting x=0.35 in Eqn 1;

$14(0.35)+5y=12\\4.90+5y=12\\5y=12-4.90\\5y=7.10$

Dividing both sides by 5

$\frac{5y}{5}=\frac{7.10}{5}\\y=1.42$

Therefore, one large envelope costs $1.42

The right answer is Option A.

Keywords: linear equations, subtraction

Learn more about linear equations at:

#LearnwithBrainly

4 0

3 years ago

Please help with problems 2-6

Airida [17]

Answer:

3. 20/20

4. 45/21

5. 7/14

6. 3 to 1

I hope this helps!

4 0

3 years ago

Simplify (2/9)^3 A. 8/729 B. 6/9 C. 2/729 D. 8/9 No guessing please

Lunna [17]

Eliminate the exponent
2^3=8
9^3=729

The simplified answer would be 8/729.

Hope this helps!

7 0

3 years ago

How do you convert decimals into fractions?

Effectus [21]

Just put it over 100
Example 0.45 = 45/100

5 0

3 years ago