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k0ka [10]
3 years ago
15

Midpoint formula (7, 4) , (9, -1)

Mathematics
1 answer:
docker41 [41]3 years ago
4 0

Answer:

midpoint = ( \frac{x _{1}  + x _{2}}{2} , \:  \frac{y _{1} + y _{2}}{2} ) \\  = ( \frac{7 + 9}{2} , \:  \frac{4 +  - 1}{2} ) \\  =  (\frac{16}{2} , \:  \frac{3}{2} ) \\  = (8, \: 1.5)

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A line that includes the point (4,7) has a slope of 1. What is its equation in slope-intercept form?​
Anni [7]

Answer:

y = x + 3

Step-by-step explanation:

slope intercept form: y = mx + b

slope is given: 1

(x, y) is given: (4, 7)

plug in values and solve for b:

7 = (1)(4) + b

b + 4 = 7

b = 3

rewrite equation:

y = 1x + 3

y = x + 3

4 0
3 years ago
I don’t understand how any help
Alona [7]

Answer:yellow .

Step-by-step explanation: you’re moving over 2 to the right. Right is positive. Down is negative, and since you’re doing 2 to the right, and down 1, we have (2,-1)

5 0
3 years ago
HELP QUICK DUE TODAY
Scilla [17]
Area = S^2

S(S-3) =70

S^2 -3S = 70
S^2 - 3s-70 = 0

(s-10) (s+7) = 0

s = 10, s=-7

S=10

original dimension was 10cm x 10cm


3 0
3 years ago
Help me and explain / gimme answers to number one
Anna [14]
Area of triangle = 1/2 x base x height

base = 15 + 6 = 21
height = 8

Area of triangle = 1/2 x 21 x 8 = 84 in²

--------------------------------------------------------------------
Answer: Area = 84 in²
--------------------------------------------------------------------
5 0
4 years ago
Read 2 more answers
In ABC, if the lengths of sides a and c are 8 centimeters and 16 centimeters, respectively, and the measure of C is 35 degrees,
Simora [160]

Answer:

∠ A ≈ 16.67°

Step-by-step explanation:

Using the Sine rule in Δ ABC

\frac{a}{sinA} = \frac{c}{sinC} , substitute values

\frac{8}{sinA} = \frac{16}{sin35} ( cross- multiply )

16 sinA = 8 sin35° ( divide both sides by 16 )

sin A = \frac{8sin35}{16} , thus

∠ A = sin^{-1} ( \frac{8sin35}{16} ) ≈ 16.67° ( to 2 dec. places )

8 0
3 years ago
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