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2 years ago

Which scatterplot would have a trend line with a negative slope?

Mathematics

2 answers:

Sergeeva-Olga [200]2 years ago

8 0

One with it scattered facing down

Readme [11.4K]2 years ago

4 0

Answer:

The answer would be A

Step-by-step explanation:

Sorry if i'm wrong

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Which point is 7 units from (–2, 4)?

Serjik [45]

The distance formula:
$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

$(x_1,y_1)=(-2,4) \\
d=7 \\ \\
7=\sqrt{(x-(-2))^2+(y-4)^2} \\
7=\sqrt{(x+2)^2+(y-4)^2} \ \ \ |^2 \\
49=(x+2)^2+(y-4)^2$
Check which point satisfies the equation:
$(x,y)=(-5,4) \\
49 \stackrel{?}{=} (-5+2)^2+(4-4)^2 \\
49 \stackrel{?}{=} (-3)^2+0^2 \\
49 \stackrel{?}{=} 9 \\
49 \not= 9 \\
doesn't \ satisfy \ the \ equation$

$(x,y)=(-2,3) \\
49 \stackrel{?}{=} (-2+2)^2+(3-4)^2 \\
49 \stackrel{?}{=} 0^2+(-1)^2 \\
49 \stackrel{?}{=} 1 \\
49 \not= 1 \\
doesn't \ satisfy \ the \ equation$

$(x,y)=(5,4) \\
49 \stackrel{?}{=} (5+2)^2+(4-4)^2 \\
49 \stackrel{?}{=} 7^2+0^2 \\
49 \stackrel{?}{=} 49 \\
49=49 \\
satisfies \ the \ equation$

$(x,y)=(9,4) \\
49 \stackrel{?}{=} (9+2)^2+(4-4)^2 \\
49 \stackrel{?}{=} 11^2+0^2 \\
49 \stackrel{?}{=} 121 \\
49 \not= 121 \\
doesn't \ satisfy \ the \ equation$

The answer is C.

3 0

3 years ago

Which of the following choices shows y = (x − 3)^2 − 25 in standard form?

Ksivusya [100]

The answer would be x^2-6x-16

Explanation:
y=(x-3)^2 -25
(x-3)(x-3)-25
x^2-3x-3x+9-25
x^2-6x-16

6 0

2 years ago

What is the area of a triangle that has a height of 6 feet and a base length of 7 feet?

frez [133]

Answer:

area = 21 feet^2

Step-by-step explanation:

Area of a triangle is 1/2(base*height)

1/2(6*7) = area

1/2(42) = area

area = 21 feet^2

6 0

3 years ago

Read 2 more answers

Are the following triangles congruent?<br> A) SAS<br> B) ASA<br> C) SSS<br> D) NOT

lidiya [134]

The answer is
A) SAS

7 0

3 years ago

Solve h+9.7=-9.7 and show me the steps

gladu [14]

Answer:

h = -19.4

Step-by-step explanation:

1. Take the constant on the left side of the equation by changing the positive to a negative ---> h = -9.7 -9.7

2. Solve the right side, and you have yuor answer. ---> h = -19.4

3 0

2 years ago