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3 years ago

Solve the system algebraically by setting the equations ( y= x+2 y= -3x+10 ) equal to each other. Step by step please

Mathematics

1 answer:

Komok [63]3 years ago

8 0

Answer:

x = 2

Step-by-step explanation:

Set the equations equal to each other

x + 2 = -3x + 10

+ 3x + 3x Add 3x to both sides

4x + 2 = 10

- 2 - 2 Subtract 2 from both sides

4x = 8 Divide both sides by 4

x = 2

If this answer is correct, please make me Brainliest!

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Which of these figures have lines of symmetry? If so, how many?

UkoKoshka [18]

Answer:

1, 4, 0

Step-by-step explanation:

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3 years ago

PLEASE HELP URGENT!!!!!!

arlik [135]

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Answer:

12/11 = 1 1/11 hours

Step-by-step explanation:

The total rate is the sum of the individual rates in rooms per hour.

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Their total rate is ...

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3 years ago

Phone plan A charges $1.25 for the first minute and $0.15 for every minute thereafter. Phone plan B charges a $0.90 connection f

melomori [17]

Answer:

The answer is (C) $1.25+0.15(x-1)=0.90+0.20x$ .

Step-by-step explanation:

Now, to find the equation for finding the length, in minutes, of a phone call that costs the same under either plan.

<em>Let the phone charges per minute be</em> $x.$

So, to get the equation of the phone plan A as the phone plan A charges $1.25 for the first minute and after that $0.15 for every minute:

$1.25+0.15x-0.15$

$=1.25-0.15(x-1)$

Now, to get the equation of the phone plan B as given phone plan B charges a $0.90 connection fee and $0.20 per minute:

$0.90+0.20x$

As, the phone call that costs the same under either plan.

Thus:

$1.25+0.15(x-1)=0.90+0.20x$

Therefore, the answer is (C) $1.25+0.15(x-1)=0.90+0.20x$ .

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4 years ago

The Warriors made seven out of 15 shots. If the ratio of made to total shots remains constant, how many shots will the Warriors

Ray Of Light [21]

Answer:

Step-by-step explanation:

The ratio of shots made to shots total is 7:15. Now since we don't know the shots made from 60 total shots, we can set the ratio as x:60. Since 15 goes into 60 4 times, we can multiply both parts of the ratio by 4 to get 28:60.

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3 years ago

21 22 23 24 25 TIME REMAINING 01:40:27 A hat contains slips of paper with the names of the 26 other students in Eduardo’s class

Pani-rosa [81]

There are 26 - 10 = 16 girls. The number of ways to choose 2 girls from a set of 16 is C(16, 2) = 120. (Your class might be using a different notation for combinations, like $_{16}C_2$ .)

The number of ways to choose 2 people (boys or girls) from a set of 26 is C(26, 2) = 325.

The probability of choosing 2 girls is $\frac{120}{325} = \frac{24}{65}$

Example: how to compute C(16,2):

$C(n, r) = \frac{n!}{r!(n-r)!} \\ C(16, 2) = \frac{16!}{2!(16-2)!} \\ =\frac{16!}{2! \times 14!} \\ =\frac{16\times 15}{2\times 1} \\ =120$

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4 years ago