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tester [92]
3 years ago
11

Elvira is making a calendar for the

Mathematics
1 answer:
Rashid [163]3 years ago
7 0

Answer:

The area of the poster board is 432in²

Step-by-step explanation:

Area = base x height

Area = 18 x 24

Area = 432in²

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Sasha hikes into a canyon. She takes a break at the rest stations every 2/3 of a mile. If she started at sea level and has hiked
butalik [34]

the only right one is a, hope this helps

6 0
3 years ago
∆ABC is an isosceles triangle. The length of CB is 12 feet 4 inches and the congruent sides are
son4ous [18]

Answer:

Answer for 2nd is option c, for 3rd is option d, for 4th is option e

Step-by-step explanation:

As we know 1 ft.=12 in.

  1. In ΔABC

   ∴ The congruent sides are AB and AC respectively

  • CB =12 ft. 4 in.=148 in.
  • AB=\frac{3}{4}CB =111 in. =9 ft. 3 in.
  • AC=\frac{3}{4}CB =111 in. =9 ft. 3 in.

    ∵  <em>Perimeter of ΔABC</em> =AB+AC+CB

                                        =9 ft. 3 in. + 9 ft. 3 in. +12 ft. 4 in.

                                        =30 ft. 10 in.

    2. In ΔDEF

    ∴ The congruent sides are DE and DF respectively

  • DE =  6 ft. 3 in. =75 in.
  • DF =  6 ft. 3 in. =75 in.
  • Let the length of FE is equal to x
  • 0.75FE =DE =DF
  • 0.75x = 6 ft. 3 in. =75 in.
  • x =100 in. =8 ft. 4 in.

   ∵ <em>Perimeter of ΔDEF</em> =DE+DF+FE

                                        = 6 ft. 3 in. +6 ft. 3 in. +8 ft. 4 in.

                                        = 20 ft. 10 in.

    3. In ΔJKL

    ∴ The congruent sides are JL and KL respectively

  • JK = x+3
  • KL =4x-17
  • JL  =6x-45
  • JL≅KL
  • 4x-17 =6x-45  . . . . . . . . . . . . . . . . . . . . . . . (1)
  • Subracting 4x from both sides from eq 1
  • -17 =2x-45
  • Adding 45 on both the sides
  • 28 =2x
  • Dividing by 2 on both sides
  • 14 =x
  • JK = 14+3 =17
  • KL = 4×14-17 =39
  • JL = 6×14-45 =39

   ∵ <em>The dimensions of the ΔJKL are 39,39 and 17.</em>

6 0
3 years ago
I am a polygon,I have no parallel lines,I am formed by 3 lines segments,I have one right angle,Two of my angles are acute.
nirvana33 [79]
You are a right triangle. You can tell this by both the 3 sides and the 90 degree angle. 
4 0
3 years ago
Help me solve for 14 and 15
Mashutka [201]

Answer: 14) 12 and 15) -27.

Step-by-step explanation:

<em>x - 10 = 2</em>

<em>x= 2+10</em>

<em>x=12</em>

<em />

<em>-16 = x +11</em>

<em>x = -16-11</em>

<em>x= -27</em>

7 0
3 years ago
Read 2 more answers
A population of 422,000 increases by 12% each year. What is the approximate population after 5 years?
Zarrin [17]
Here are formulas we choose from
 Increasing: y = a (1 + r)x        Decreasing: y = a(1 - r)x

we want increasing

422000(1+.12)^5
743,708 (you don't want the decimals because you can't divide a human...)
4 0
3 years ago
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