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3 years ago

10

Help please! I don't understand.

1 answer:

Serhud [2]3 years ago

4 0

Answer:

Question 13: is Side-Side-Angel

Question 14: laws sines.

Question 15: is 1 (which b.)

there my brother tried his best, have a great day TwT

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Solve the system using substitution method <br> 3x+y=6<br> 2x-4y=10

Andreyy89

$\left\{\begin{array}{ccc}3x+y=6&|-3x\\2x-4y=10\end{array}\right\\\\\left\{\begin{array}{ccc}y=6-3x\\2x-4y=10\end{array}\right\\\\substitute\ y=6-3x\ to\ the\ second\ equation\\\\2x-4(6-3x)=10\\\\2x-4\cdot6-4\cdot(-3x)=10\\\\2x-24+12x=10\\\\14x-24=10\ \ \ |+24\\\\14x=34\ \ \ \ |:14\\\\x=\dfrac{34}{14}\to x=\dfrac{17}{7}\\\\substitute\ the\ value\ of\ x\ to\ first\ equation\\\\y=6-3\cdot\dfrac{17}{7}=6-\dfrac{51}{7}=\dfrac{42}{7}-\dfrac{51}{7}=-\dfrac{9}{7}$

$\boxed{\left\{\begin{array}{ccc}x=\dfrac{17}{7}\\\\y=-\dfrac{9}{7}\end{array}\right}$

5 0

3 years ago

Read 2 more answers

cell phone provider offers a plan that costs $40 per month plus $0.20 per text message sent or received. A comparable plan cos

Orlov [11]

Answer:

the second one is the better deal

Step-by-step explanation:

6 0

3 years ago

On a given day, 36 of the 445 students in a school were absent. What was the appproximate absentee rate that day?

Nata [24]

Answer: The approximate absentee rate that day would be 8.09%.

Step-by-step explanation:

Since we have given that

Number of students who were absent = 36

Total number of students = 445

We need to find the approximate absentee rate that day :

Rate of absentee of that day would be

$\dfrac{\text{Number of absentee}}{\text{Total number of students}}\times 100\\\\=\dfrac{36}{445}\times 100\\\\=8.09\%$

Hence, the approximate absentee rate that day would be 8.09%.

5 0

3 years ago

If you increase your bicycle speed by 5.6 miles per hour, the speed will be 17.9 miles per hour. What is your bicycle speed now?

Andru [333]

Answer:

12.3 mph

Step-by-step explanation:

17.9 - 5.6 = 12.3

7 0

3 years ago

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Three less than the product of 9 and a number is equal to 6

Alchen [17]

Answer:

3<9n=6 or 3-9n≤6

Step-by-step explanation:

if you are writing an equation I would go with the second

8 0

3 years ago

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