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3 years ago

Use substitution to solve the system of linear equations. In your final answer, include all of your work.

Mathematics

1 answer:

Anna11 [10]3 years ago

4 0

Answer:

Y=-3

Step-by-step explanation:

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Some girls in a Girl Scout troop are pairing up with some boys in a Boy Scout troop to practice square dancing. Two-thirds of th

Natalka [10]

Answer:

Fraction of the scouts are square dancing is $\frac{19}{30}$ .

Step-by-step explanation:

Each pair is one Girl Scout and one Boy Scout.

So, to the final fraction ( of the pairs) we are going to get 1/2 from the fraction of girls and 1/2 from the fraction of boys.

Girls= $\frac{2}{3} *\frac{1}{2} =\frac{2}{6}$

Boys= $\frac{3}{5} *\frac{1}{2} =\frac{3}{10}$

To get the fraction of the scouts that are square dancing, we have to add the fraction of girls , with the fraction of boys.

= $\frac{2}{6} +\frac{3}{10}$

= $\frac{(2*10) +(6*3)}{6*10} =\\ \frac{20+18}{60}$

= $\frac{38}{60}$

= $\frac{19}{30}$

This means that from 30 scouts , 19 are dancing.

5 0

3 years ago

Winnona took five chapter tests. The table shows her scores. Test 1 2 3 4 5 Score 95 85 96 97 74 If Winnona retakes Test 5, what

mestny [16]

Answer:

The answer is A.

Step-by-step explanation:

Given that Winnona took 5 tests and retake Test 5. So the mean score for this question is Total number of scores divide by Total number of tests is equals to 87 :

Let Test 5's score be x,

Let mean score be 87,

$\frac{95 + 85 + 96 + 97 + x}{5} = 87$

Next you have to solve the value of x :

$373 + x = 87 \times 5 \\ 373 + x = 435 \\ 373 + x - 373 = 435 - 373 \\ x = 62 \: \: \: scores$

5 0

3 years ago

Please help me

Anit [1.1K]

Answer:

Questions

What is an amount between $2 and $10? (A) ____$7______

What is an amount between $10 and $20? (B) ____$15______

What is an amount greater than $50? (C) _____$478_____

6 0

2 years ago

Tom starts at point A and then walk 3km east to point B and then walks 4km north to point C calculate the bearings and distance

sergejj [24]

Answer:

5km

Step-by-step explanation:

Please check the attached image for a diagram explaining this question

The distance from A to C can be determined using Pythagoras theorem

The Pythagoras theorem : a² + b² = c²

where a = length

b = base

c = hypotenuse

3² + 4²

= 16 + 9

= 25

determine the square root of 25

√25 = 5km

4 0

3 years ago

T' is (6, 6) what is the scale factor of the dilation

Colt1911 [192]

Is this all the information that you have

5 0

3 years ago