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lions [1.4K]
1 year ago
11

The points (-15, r) and (-3, 16) lie on a line with slope 5/4. Find the missing coordinate r.

Mathematics
1 answer:
Setler79 [48]1 year ago
4 0

Answer:

r = 1

Step-by-step explanation:

we know that :

Slope=\frac{y_{B}-y_{A}}{x_{B}-x_A}

Then

\frac{5}{4} =\frac{16-r}{-3-(-15)}

Then

\frac{5}{4} =\frac{16-r}{12}

Then

5×12 = 4×(16-r)

Then

60 = 64 - 4r

Then

4r = 64 - 60

Then

4r = 4

Then

r = 1

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lions [1.4K]
<h3>Answer: Choice C</h3>

Here's how the verification would look like

\frac{\sin^2x+\cos^2x}{\cos x} = \sec x

\frac{1}{\cos x} = \sec x using the identity here

\sec x =  \sec x

5 0
3 years ago
What is the property used and the solution 4.(-3).5
Fiesta28 [93]

Answer:

60

Step-by-step explanation:

using the bodmas

multiply 4 by -3

then multiply with 5

8 0
2 years ago
Can someone please help me?? I’m not sure what the answer is.
PilotLPTM [1.2K]

Answer: 1 and 2 only

Step-by-step explanation:

4 0
2 years ago
What is the value of x in the following equation?<br> 4r +6<br> + 3 = -6<br> -6<br> -3
zhuklara [117]

Answer:

x = -6

Step-by-step explanation:

Solve for x:

(4 x + 6)/2 + 3 = -6

Hint: | Put the fractions in (4 x + 6)/2 + 3 over a common denominator.

Put each term in (4 x + 6)/2 + 3 over the common denominator 2: (4 x + 6)/2 + 3 = 6/2 + (4 x + 6)/2:

6/2 + (4 x + 6)/2 = -6

Hint: | Combine 6/2 + (4 x + 6)/2 into a single fraction.

6/2 + (4 x + 6)/2 = ((4 x + 6) + 6)/2:

(4 x + 6 + 6)/2 = -6

Hint: | Add the numbers in 4 x + 6 + 6 together.

Add like terms. 6 + 6 = 12:

(4 x + 12)/2 = -6

Hint: | Multiply both sides by a constant to simplify the equation.

Multiply both sides of (4 x + 12)/2 = -6 by 2:

(2 (4 x + 12))/2 = -6×2

Hint: | Cancel common terms in the numerator and denominator of (2 (4 x + 12))/2.

(2 (4 x + 12))/2 = 2/2×(4 x + 12) = 4 x + 12:

4 x + 12 = -6×2

Hint: | Multiply 2 and -6 together.

2 (-6) = -12:

4 x + 12 = -12

Hint: | Isolate terms with x to the left hand side.

Subtract 12 from both sides:

4 x + (12 - 12) = -12 - 12

Hint: | Look for the difference of two identical terms.

12 - 12 = 0:

4 x = -12 - 12

Hint: | Evaluate -12 - 12.

-12 - 12 = -24:

4 x = -24

Hint: | Divide both sides by a constant to simplify the equation.

Divide both sides of 4 x = -24 by 4:

(4 x)/4 = (-24)/4

Hint: | Any nonzero number divided by itself is one.

4/4 = 1:

x = (-24)/4

Hint: | Reduce (-24)/4 to lowest terms. Start by finding the GCD of -24 and 4.

The gcd of -24 and 4 is 4, so (-24)/4 = (4 (-6))/(4×1) = 4/4×-6 = -6:

Answer: x = -6

4 0
2 years ago
A student places a mirror on the ground between herself and the tree so that she can see the top of the
salantis [7]

Answer:

i think its a

Step-by-step explanation:

7 0
3 years ago
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