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GaryK [48]
3 years ago
14

Teresa and Eva are walking home from school. They start out walking for 2 blocks and then running for 3 blocks and then repeatin

g this pattern. If they walk 2 blocks in 4 minutes and run 3 blocks in 2 minutes, how long will it take them to go 18 blocks?
Mathematics
2 answers:
Sati [7]3 years ago
5 0
5blocks=6mins
18blocks=xmins.

18/5 × 6= 21.6 = 21mins

Nostrana [21]3 years ago
5 0
Just do a pattern 2 blocks = 4 mins   3 = 2 when you get to twelve blocks count again 2 =4    3 = 2 

then the anser is 15!!

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5th grade math. correct answer will be marked brainliest
Gala2k [10]

Answer

c

Step-by-step explanation:

2.72 ÷ 1.54

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2 years ago
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Evaluate f[g(x)] when f(x)=7x-5 and g(x)=x+2
Alex

Answer:

7x+9

Step-by-step explanation:

f(x)=7x-5

g(x)=x+2

f[g(x)]=  Substitute g(x) in for x in the function f(x)

           =7(g(x))-5

          = 7( x+2) - 5

Distribute

           = 7x+14 - 5

Combine like terms

           =7x +9

5 0
3 years ago
Can the sides of a triangle be in the given ratio? 3:4:5
RUDIKE [14]

Answer:

Yes

Step-by-step explanation:

In order to determine if a triple of values will form a triangle, we must apply the Triangle Inequality Theorem, which states that for a triangle with lengths a, b, and c:

a + b > c

a + c > b

b + c > a

Here, let's suppose that since the ratio of the sides is 3 : 4 : 5, then let the actual side lengths be 3x, 4x, and 5x, where x is simply a real value.

With loss of generality, set a = 3x, b = 4x, and c = 5x. Plug these into the Triangle Inequality to check:

a + b > c  ⇒  3x + 4x  >?  5x  ⇒  7x > 5x  ⇒  This is true

a + c > b  ⇒  3x + 5x  >?  4x  ⇒  8x > 4x  ⇒  This is also true

b + c > a  ⇒  4x + 5x  >?  3x  ⇒  9x > 3x  ⇒  This is true

Since all three conditions are satisfied, we know that a true triangle can be formed given that the ratio of their sides is 3 : 4 : 5.

<em>~ an aesthetics lover</em>

5 0
3 years ago
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Find the percent of change when the price of a radio changes from $40.00 to $44.00
Kamila [148]

Answer:

b

Step-by-step explanation:

The difference between price is 4 dollars and 4 dollars is 10 percent of 40, therefore it changes by 10%

4 0
3 years ago
the right rectangular prism shown has a length of 8ft a width of 2ft and a height of 6ft the dimensions of the prism are doubled
Elan Coil [88]

Answer:

Part 1) The scale factor is 2

Part 2) The dimensions of the enlarged prism are

a.Length=(8)(2)=16 ft

b.Width=(2)(2)=4 ft

c.Height=(6)(2)=12 ft

Part 3) The surface area of the smaller rectangular prism is 152 ft^{2}

Step-by-step explanation:

we now that

If two figures are similar, then the ratio of its corresponding sides is equal and this ratio is called the scale factor

Part 1)

Find the scale factor

we know that

If the dimensions of the smaller prism are doubled , then the scale factor from the smaller rectangular prism to the larger rectangular prism is equal to 2

Part 2)

we know that

To find the dimensions of the enlarged figure, multiply the dimensions of the smaller prism by the scale factor

so

Length=(8)(2)=16 ft

Width=(2)(2)=4 ft

Height=(6)(2)=12 ft

Part 3) Find the surface area of the smaller rectangular prism

we know that

The surface area of the rectangular prism is equal to the area of its six rectangular faces

SA=2(8)(2)+2(2)(6)+2(8)(6)=152 ft^{2}

7 0
3 years ago
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