Answer:
13. b. 4 + 5x = 29; $5.
14. c. 74 + w = 3w + 6; 34 pounds.
15. b. $42.5.
Step-by-step explanation:
13. 4 + 5x = 29
5x = 29-4 = 25
x = 5.
14. 74 + w = 3w + 6
68 = 2w
w = 34.
15. Let x be the money he got last year. Then:
2x + 5 = 90
2x = 85
x = $42.5.
Answer:
<u><em>The area increase by 225%</em></u>
<em><u>Step-by-step explanation: </u></em>
<em><u>attachment of a triangle</u></em>
<em><u>The area of a triangle equilateral is calculated with the next formula:</u></em>
<em><u>A=
</u></em>
<em><u>
=
</u></em>
<em><u>
=
*3</u></em>
<em><u>h=
</u></em>
<em><u>h=
</u></em>
<em><u>replacing in the A equation:</u></em>
<em><u>A=
</u></em>
<em><u>A=
</u></em>
<em><u>Now each side increse by 50% ⇒ a=1.5a</u></em>
<em><u>A=
</u></em>
<em><u>A=
</u></em>
<em><u>A=2.25 *
</u></em>
<em><u>It means that the area incrase by 225%</u></em>
Answer: 180
Step-by-step explanation:
Answer:
10 %
Step-by-step explanation:
15 mn = 1/4 h
We have :

Then the percentage that 15 mn represents of 5/2 h is :
0.1 × 100 = 10 %
9514 1404 393
Answer:
36.4 m
Step-by-step explanation:
Rounded to tenths, the dimensions are ...
12.7 m by 5.5 m
The sum of these is 18.2 m, so the estimate of the perimeter is ...
2·18.2 = 36.4 m
_____
The perimeter formula is ...
P = 2(L +W) . . . . . twice the sum of length and width.