MATHEMATICS HIGH SCHOOL

Solve the following system of equations using elimination (addition)5x - 6y = - 32

3x + 6y = 48

Answers

Answer 1
Answer:

Answer:

x = 2

y = 6 1/3

Step-by-step explanation:

5x - 6y = -32

3x + 6y = 48

-----------------

8x = 16

x = 2

5(2) - 6y = 48

10 - 6y = 48

-6y = 48 - 10

-6y = 38

y = 6 1/3

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Estimate the angle of elevation from the trailhead to the summit.

Answers

you can do the sin, cos, or tan of that angle using any of the numbers provided

Sin x = summit/ trailhead

Cos x = horizontal distance / trailhead

tan x = summit/ horizontal distance

If y varies inversely as x and y = 18 when x = 4, what is y when x = 24?a.12
b.6
c.3
d.16

Answers

The answer is C. Try 18=k/4. 18*4=72. Take 72/24=3.
The answer is 3. 
y=k/x
18=k/4
k= 72
when x is 24
y=72/24
=3

Write the quadratic equation in standard form. What is the value of b 2 - 4ac?1 = 2x 2 + 7x

Answers

b^2 - 4ac > 0
2x^2 +7x -1 =0
b =7 a=2 c= -1
b^2 - 4ac = 7^2 - 4*2*(-1)
= 49 + 8
= 57

Solve this inequality: 3p – 16 < 20. A. p < –12
B. p < 12
C. p < 1/3
D. p < 11/3

Answers

3p - 16 < 20
3p < 20 + 16
3p < 36
p < 12

The answer is B.
3p - 16 < 20

3p < 20 + 16

3p < 36

p < 36/3

p < 12

Option B.

Which property applies only to addition and multiplication? A. Associative property B. Distributive property C. Inverse property D. Both A and B

Answers

the answer is associative property because no matter how you group the numbers, you still get the same number. hopefully my answer helped you

Select the statement that is the converse of the following statement:If I get a good grade on my next math test, then I'll be stoked.
Answer
If I'm stoked, then I got a good
grade on my math test.
If I'm not stoked, then I didn't
O get a good grade on my math
test.
If I don't get a good grade on
my next math test, then I won't
be stoked.
If I get a good grade on my
next math test, then I won't be
stoked.

Answers

Answer:

"If I don't get a good grade on my next math test, then I won't be stoked."

Step-by-step explanation:

The original statement is about a good grade leading to being happy. The converse statement is about a bad grade leading to not being happy. It's the opposite situation but still follows a similar pattern: "If A, then B" becomes "If not A, then not B."
Let me know if you have any questions!
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