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mrs_skeptik [129]
3 years ago
11

Write as an equation: a triangle has two equal sides and a third side that is 15cm long. How long is each of the equal sides if

the perimeter is 50?
Mathematics
1 answer:
dsp733 years ago
4 0

Answer:

Step-by-step explanation:

X+x+15=50

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The actual length of Lake Superior is 350 miles and the width is 160 miles. What's the length and width of the lake on a map if
pentagon [3]

The correct option is:   B.  length: 14 cm, width: 6.4 cm

<em><u>Explanation</u></em>

The actual length of Lake Superior is 350 miles and the width is 160 miles.

The scale is given as:  1 cm = 25 miles

Suppose, the length and width of the lake on the map are  x cm and y cm respectively.

First, the equation according to the <u>ratio of scaled length to the actual length</u> will be....

\frac{x}{350}=\frac{1}{25}\\ \\ 25x=350\\ \\ x=\frac{350}{25}=14

Now, the equation according to the <u>ratio of scaled width to the actual width</u> will be....

\frac{y}{160}=\frac{1}{25}\\ \\ 25y=160\\ \\ y=\frac{160}{25}=6.4

Thus, the length and width of the lake on the map will be 14 cm and 6.4 cm respectively.

7 0
3 years ago
Subtract 15 and 4 , double the difference, and then add two-thirds
mrs_skeptik [129]
15-4 = 11

11 x 2 = 22

22 + 2/3 = 68/3
3 0
3 years ago
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Multiply the binomials and simplify so that they are in standard form. Show all your work.
tatuchka [14]

Answer: The answer is = 2x^2 -11x-40

Step-by-step explanation: a= 2x, b=5, c= x, d =8

= 2xx + 2x (-8) + 5x +5(-8)

+ (-a)=-a

then simplify =2xx-2 -8x+5x.8

2xx=2x^2

2.8x=16x

5.8=40

=2x - 16x + 5x- 40

8 0
4 years ago
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2+4 what's the answer​
Goryan [66]

Answer:

6.

Step-by-step explanation:

4+2 = 6 lol hehehehehe

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