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Inessa05 [86]
2 years ago
7

Helpppppp againnn plzzz

Mathematics
2 answers:
Karo-lina-s [1.5K]2 years ago
7 0

Answer:

x = 8.17

Step-by-step explanation:

We will be using pythagoras theorem:

a^{2} + b^{2} = c^{2}

=> 4.25^{2} + x^{2} = 9.21^{2}

=> x^{2} = 84.8241 - 18.0625 = 66.7616

=> x = \sqrt{66.7616} = 8.17077719.. = 8.17 (3 s.f)

galina1969 [7]2 years ago
5 0

Answer:

x=8.17

Step-by-step explanation:

uztstskycuvkhifig

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A 271⁄2-mile stretch of road needs repaving. A company bid on the repaving project, saying they could repave 21⁄4 miles of road
harkovskaia [24]

Answer:

D.)12 2/9

Step-by-step explanation:

27 1/2 / 2 1/4= 12 2/9

7 0
3 years ago
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Parallelogram FGHI on the coordinate plane below represents the drawing of a horse trail through a local park.
Setler [38]
The answer is <span>A)(13, 8).

Distance I to F is:     yf - yi = -1 - (-4) = -1 + 4 = 3
Distance D to A is:   ya - yd = 8 - 2 = 6

</span>Distance D to A : Distance I to F = 6 : 3<span>
6 : 3 = 2, so scale factor is 2.

Among all choices, we see that the y point of another corner is 8, so we need to find x point.

Distance I to H is:                 xh - xi = -2 - (-7) = -2 + 7 = 5
Distance A to x corner is:    x - xa = x - 3

Since </span>Distance I to H is 5, and scale factor is 2, we have:
Distance A to x corner : Distance I to H = 2
Distance A to x corner = 2 * Distance I to H = 2 * 5 = 10

Distance A to x corner is:    xa - x = x - 3 = 10
x - 3 = 10
x = 10 + 3
x = 13

4 0
3 years ago
Read 2 more answers
Please show work!!!!!!
likoan [24]

Answer:

\frac{4\sqrt{5} }{5}

Step-by-step explanation:

\frac{4\sqrt{6} }{\sqrt{30} } =\frac{\sqrt{30} *4*\sqrt{6} } \sqrt{30} {\sqrt{30} } \\\\

\frac{4\sqrt{6*30} }{30} =\frac{4*\sqrt{180} }{30} =\frac{4*\sqrt{36*5} }{30} = \\\\\frac{4*6\sqrt{5} }{6*5} =\frac{4\sqrt{5} }{5}

5 0
3 years ago
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Which components are a possible representation of vector w if the magnitude of vector -3w is ||-3w||=15?
Black_prince [1.1K]

Answer:

<-3,4>

<0,-5>

Step-by-step explanation:

|-3w| = 15

3|-w| = 3|w| = 15

|w| = \frac{15}{3}

|w| = 5

  • If vector w is represented by <1,-9>

Then |w| = \sqrt{(1)^{2}+(-9)^{2}}=\sqrt{1+81}=\sqrt{82}\neq5 .

Therefore this is not possible.

  • If vector w is represented by <-3,4>

Then |w| = \sqrt{(-3)^{2}+(4)^{2}}=\sqrt{9+16}=\sqrt{25}=5 .

Therefore this is possible.

  • If vector w is represented by <4,5>

Then |w| = \sqrt{(4)^{2}+(5)^{2}}=\sqrt{16+25}=\sqrt{41}\neq5 .

Therefore this is not possible.

  • If vector w is represented by <-5,-3>

Then |w| = \sqrt{(-5)^{2}+(-3)^{2}}=\sqrt{25+9}=\sqrt{34}\neq5 .

Therefore this is not possible.

  • If vector w is represented by <0,-5>

Then |w| = \sqrt{(0)^{2}+(-5)^{2}}=\sqrt{0+25}=\sqrt{25}=5 .

Therefore this is possible.

(NOTE : if z vector is represented by <x,y> then |z| = \mathbf{\sqrt{x^{2}+y^{2}}} )

4 0
3 years ago
Someone help me please, I can't figure this out
vodomira [7]
Arithmetic sequences.....u find the next term by adding
geometric sequence....u find the next term by multiplying

sequence 1 : arithmetic...common difference is -16
32 + (-16) = 16
16 + (-16) = 0
0 + (-16) = -16

sequence 2 : geometric...common ratio is 1/2
32 * 1/2 = 16
16 * 1/2 = 8
8 * 1/2 = 4
4 0
3 years ago
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