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1 year ago

What is the slope of the line through (- 1, - 7) and (3, 9) ?

Mathematics

1 answer:

Fynjy0 [20]1 year ago

5 0

Answer:

C. 4

Step-by-step explanation:

Use the slope formula:

$m=\frac{y2}{x2} -\frac{y1}{x1}$

m = the slope.

Substitute the values into the formula:

$\frac{9}{3} -\frac{-7}{-1} =\frac{?}{?}$

Solve:

$\frac{9}{3} -\frac{-7}{-1} =\frac{16}{4}$

Simplify 16/4:

$\frac{16/4}{4/4} =\frac{4}{1}=4$

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(Please help-) For every 1 left-handed person, there are 4 right-handed people. If there are 30 students in the class, how many

Arturiano [62]

Answer:

24 of them should be right handed

Step-by-step explanation:

This is because 1+4=5 so in each grouping of students there are 5 students. Divide the total number of students by the number of students in one group it comes to be 6. So also 6(4) is 24 so your total will be 24.

4 0

2 years ago

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Solve for x: x^2=a If a<0, then If a=0, then If a>0, then

Anastaziya [24]

if a > 0, there are two possible solutions:

$x^{2} = a\\\sqrt{x^{2} } = \sqrt{a} \\$

the square root of a square is the base in absolute value bars

$|x| = \sqrt{a}$

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1 year ago

Find the equation of a line which passes through (2 4) with a slope of ½

Norma-Jean [14]

Answer:

The equation of the straight line is x - 2y +6 =0

Step-by-step explanation:

Explanation:-

Given a point ( 2, 4) and slope m = $\frac{1}{2}$

The equation of the straight line passing through the point and having slope 'm'

y - y₁ = m ( x - x₁)

y - 4 = $\frac{1}{2}$ ( x - 2)

2( y -4) = ( x-2)

2 y - 8 = x -2

x - 2 y - 2 + 8 =0

x - 2y + 6 =0

The equation of the straight line is x - 2y +6 =0

4 0

2 years ago

X=?? hurry!! will give brainliest

lesya692 [45]

Answer:

Step-by-step explanation:

102+48=150

180-150=30

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2 years ago

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Please help. 20 points and brainliest.

julia-pushkina [17]

Answer:

minimum -45, maximum 32

Step-by-step explanation:

C=4x-3y

x≥0, y≥4, x+y≤15

Maximum value of C can be achieved at max x and min y

min y=4 => max x=15-4=11

C=4*11-3*4= 32

Minimum value of C can be achieved at min x and max y

min x=0, max y =15

C=4*0-3*15= -45

So answer is minimum -45, maximum 32

7 0

2 years ago