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Gwar [14]
2 years ago
13

Need help on this question please x-7y=10 and 2x+14y=21

Mathematics
1 answer:
dalvyx [7]2 years ago
5 0

Answer:

x=7y+10

Step-by-step explanation:

x−7y=10

x−7y+7y=10+7y

x=7y+10

Answer:

x=−7y+21/2

12/2 is a fraction

Step-by-step explanation:

2x+14y=21

2x+14y+−14y=21+−14y

2x=−14y+21

2x2=−14y+21/2

x=−7y+21/2

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A spinner has 10 equally sized sections, 5 of which are gray and 5 of which are blue. The spinner is spun twice. What is the pro
zhenek [66]

Answer:

P(Gray\ and\ Blue) = \frac{1}{4}

Step-by-step explanation:

Given

Sections = 10

n(Gray) = 5

n(Blue) = 5

Required

Determine P(Gray and Blue)

Using probability formula;

P(Gray\ and\ Blue) = P(Gray) * P(Blue)

Calculating P(Gray)

P(Gray) = \frac{n(Gray)}{Sections}

P(Gray) = \frac{5}{10}

P(Gray) = \frac{1}{2}

Calculating P(Gray)

P(Blue) = \frac{n(Blue)}{Sections}

P(Blue) = \frac{5}{10}

P(Blue) = \frac{1}{2}

Substitute these values on the given formula

P(Gray\ and\ Blue) = P(Gray) * P(Blue)

P(Gray\ and\ Blue) = \frac{1}{2} * \frac{1}{2}

P(Gray\ and\ Blue) = \frac{1}{4}

3 0
3 years ago
A piece of wire 13 m long is cut into two pieces. One piece is bent into a square and the other is bent into an equilateral tria
Rom4ik [11]

The function you seek to minimize is

()=3‾√4(3)2+(13−4)2

f

(

x

)

=

3

4

(

x

3

)

2

+

(

13

−

x

4

)

2

Then

′()=3‾√18−13−8=(3‾√18+18)−138

f

′

(

x

)

=

3

x

18

−

13

−

x

8

=

(

3

18

+

1

8

)

x

−

13

8

Note that ″()>0

f

″

(

x

)

>

0

so that the critical point at ′()=0

f

′

(

x

)

=

0

will be a minimum. The critical point is at

=1179+43‾√≈7.345m

x

=

117

9

+

4

3

≈

7.345

m

So that the amount used for the square will be 13−

13

−

x

, or

13−=524+33‾√≈5.655m

5 0
2 years ago
Figure A is dilated by a scale factor of 1 to form Figure B.
son4ous [18]

Answer:

  • C. 8 inches

Step-by-step explanation:

Note. The original question is attached.

<u>Solution:</u>

Scale factor is 1/2 and the corresponding side has a length of 16 inches.

<u>The value of x is:</u>

  • x = 1/2*16 = 8 inches

Correct option is C

6 0
2 years ago
Can someone please check this?
IceJOKER [234]

Answer:

Your answers are correct.

Step-by-step explanation:

The equality will be true for odd multiples of π/4, so the last two choices will not show the expression to be <em>not</em> an identity.

8 0
3 years ago
Jenny wants to earn $1,300 by the end of the summer. How much more will she need to meet her goal?
kompoz [17]
Jenny needs $1,172.95. To solve this you need to subtract the amount Jenny already has from her goal. Then you should get your answer.

3 0
2 years ago
Read 2 more answers
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