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Ber [7]
3 years ago
11

⚠️15 POINTS+ BRAINLIEST ANSWER ⚠️

Mathematics
2 answers:
kykrilka [37]3 years ago
5 0

Answer:

a. -2

Step-by-step explanation:

the gradient, m is also called the slope

so m=\frac{y_{2} -y_{1} }{x_{2}-x_{1}  }

       = \frac{17-(-11)}{-9-5}

        = \frac{28}{-14}

        = -2

Reil [10]3 years ago
3 0

Answer:

-2

Step-by-step explanation:

Formula for slope: (y2-y1)/(x2-x1)

Plug in the given x and y values

(17-(-11))/((-9)-5)

(17+11)/((-9)-5)

28/(-14)=-2

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From a point on a river, two boats are driven in opposite directions, one at 7 miles per hour and the other at 11 miles per hour
Bogdan [553]

Answer:

Both boats will be 54 miles apart after 3 hours.

Step-by-step explanation:

Given that from a point on a river, two boats are driven in opposite directions, one at 7 miles per hour and the other at 11 miles per hour, to determine how many hours they will be 54 miles apart, the following calculation must be performed :

54 / (11 + 7) = X

54/18 = X

3 = X

Therefore, both boats will be 54 miles apart after 3 hours.

4 0
3 years ago
9. Find the number that completes the following problem. (3 + 5) + 2 = 2(+2)​
kirill115 [55]

Answer:

4

Step-by-step explanation:

(8)+2=4

16=4

16=4•4

16=16

4 0
3 years ago
Segment AB has endpoints at −2 and 12. What is the coordinate of its midpoint?
charle [14.2K]

Hi there!

\large\boxed{5}

Find the midpoint using the midpoint formula:

m = (p1 + p2) / 2

m = (-2 + 12) / 2

m = 10 / 2

m = 5.

3 0
3 years ago
A 4 metre ladder is placed against a vertical wall.
Black_prince [1.1K]

Answer:

Original position: base is 1.5 meters away from the wall and the vertical distance from the top end to the ground let it be y and length of the ladder be L.

Step-by-step explanation:

By pythagorean theorem, L^2=y^2+(1.5)^2=y^2+2.25 Eq1.

Final position: base is 2 meters away, and the vertical distance from top end to the ground is y - 0.25 because it falls down the wall 0.25 meters and length of the ladder is also L.

By pythagorean theorem, L^2=(y -0.25)^2+(2)^2=y^2–0.5y+ 0.0625+4=y^2–0.5y+4.0625 Eq 2.

Equating both Eq 1 and Eq 2: y^2+2.25=y^2–0.5y+4.0625

y^2-y^2+0.5y+2.25–4.0625=0

0.5y- 1.8125=0

0.5y=1.8125

y=1.8125/0.5= 3.625

Using Eq 1: L^2=(3.625)^2+2.25=15.390625, L=(15.390625)^1/2= 3.92 meters length of ladder

Using Eq 2: L^2=(3.625)^2–0.5(3.625)+4.0625

L^2=13.140625–0.90625+4.0615=15.390625

L= (15.390625)^1/2= 3.92 meters length of ladder

<em>hope it helps...</em>

<em>correct me if I'm wrong...</em>

4 0
3 years ago
The table shows the unit prices (per pound) of tomatoes
blondinia [14]

Answer:

store B, C, and D

Step-by-step explanation:

6 0
3 years ago
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