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Mnenie [13.5K]
3 years ago
15

Which statements are true about the ordered pair (10, 5) and the system of equations? {2x−5y=−5x+2y=11 Select each correct answe

r. The ordered pair (10, 5) is a solution to the first equation because it makes the first equation true. The ordered pair (10, 5) is a solution to the second equation because it makes the second equation true. The ordered pair (10, 5) is not a solution to the system because it makes at least one of the equations false. The ordered pair (10, 5) is a solution to the system because it makes both equations true.
Mathematics
1 answer:
lozanna [386]3 years ago
8 0
The ordered pair (10, 5) is a solution to the first equation because it makes the first equation true.

The ordered pair (10, 5) is not a solution to the system because it makes at least one of the equations false.

 Those are correct. In k12 and got 100% on the exam
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You were billed $17.60 for water usage at a rate of $0.55 per gallon. Three choices are correct ways to calculate the the number
nalin [4]

We know that total bill = rate per gallon times numbers of gallons used

So 17.60 = 0.55 times g

which get match to option (a) this is correct .

Now if we divide both sides by 0.55 we would be getting :

17.60 / 0.55 = g which is slightly different than option (b) ( because it is 55 in option b but actually it should be 0.55) so this one is incorrect .

let us now come back to option (a) 17.6 = 0.55 g

if flip the sides it becomes 0.55g = 17.6 which is same as option c option c is also correct .

Let us now divide both sides of option a by g^2 which makes it

17.6/ g^2 = 0.55 /g or 0.55/g = 17.6 /g^2 which matches only left side of option d but not right side of it so this is also not a correct option

Answer : only (a) and c are correct answer .

3 0
3 years ago
Read 2 more answers
-Ms. Gorman says, “Then victory won’t lie in the blade, but in all the bridges we’ve made.” What does she mean by ‘bridges?’
Setler [38]

Answer:

OH I love Amanda Gorman!

Step-by-step explanation:

6 0
3 years ago
Apples cost $1.62 per pound, and bananas cost $0.48 per pound. What is the total cost for 2 1/2 pounds of apples and 1 1/3 pound
Veseljchak [2.6K]

Answer:

$4.69

Step-by-step explanation:

<em>$</em><em>1.62</em><em>/</em><em>lb</em><em> </em><em>×</em><em> </em><em>2.5</em><em> </em><em>=</em><em> </em><em>$</em><em>4.05</em>

<em>$</em><em>0.48</em><em>/</em><em>lb</em><em> </em><em>×</em><em> </em><em>1</em><em> </em><em>1</em><em>/</em><em>3</em><em> </em><em>=</em><em> </em><em>$</em><em>0.64</em>

<em>$</em><em>4.05</em><em> </em><em>+</em><em> </em><em>$</em><em>0.64</em><em> </em><em>=</em><em> </em><em>$</em><em>4.69</em>

6 0
3 years ago
An angle measures 40.2° more than the measure of its complementary angle. What is the measure of each angle?
vampirchik [111]
<h3>Solving for the measurements of Complementary Angles</h3><h3>Answer:</h3>

24.9^{\circ} and 65.1^{\circ}

<h3>Step-by-step explanation:</h3>

Recall that Angles that are complementary to each other add up to 90^{\circ}.

Let a be the measure of the complementary angle.

If an angle is 40.2^{\circ} more than its complementary angle, the measure of that angle is a +40.2. The sum of both angles are expressed a +(a +40.2) but since the have to add to 90 as they are complementary, a +(a +40.2) = 90.

Solving for a:

a +(a +40.2) = 90 \\ a +a +40.2 = 90 \\ 2a +40.2 = 90 \\ 2a +40.2 -40.2 = 90 -40.2 \\ 2a = 49.8 \\ \frac{2a}{2} = \frac{49.8}{2} \\ a = 24.9

Since the other angle measures a +40.2, we can plug in the value of a to find the measure of the angle.

Evaluating a +40.2:

a +40.2 \\ 24.9 +40.2 \\ 65.1

The measure of the angles are 24.9^{\circ} and 65.1^{\circ}

4 0
3 years ago
The area of a square bedroom is 81 ft2. Clara says the length of one wall could be 9 feet or -9 feet. What is Clark's mistake? E
ivolga24 [154]
You cant have less than 0 feet measurements don't go negative
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8 0
3 years ago
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