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2 years ago

Help with pre algebra

Mathematics

2 answers:

Firdavs [7]2 years ago

5 0

Answer:

Y-axis

Step-by-step explanation:

B is a reflection of point A across theY-axis. The vertical line is Y and the horizontal line is X.

olganol [36]2 years ago

4 0

Answer:

The y-axis.

Step-by-step explanation:

This is because it is mirroring across the y-axis, and the x-coordinate's sign is getting changed from positive to negative.

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How do you solve 2x+4=7

marissa [1.9K]

2x+4=7 subtract 4 from both sides

2x=3 divide both sides by 2

x=3/2

x=1.5

8 0

2 years ago

Can someone please explain this

S_A_V [24]

Oh. It's rounding. So, for example, depending what you were told to round to, the second problem would be 760-330=430

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2 years ago

A skier is trying to decide wether or not to buy a season ski pass. A daily pass costs $79. A season ski pass costs $400. The sk

True [87]

Answer:

Step-by-step explanation:

to buy a monthly pass

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2 years ago

Read 2 more answers

What is the area of this figure? 168 102 132 340

JulsSmile [24]

Area of square =6*6= 36 cm^2
Area of trapezoid =1/2( base1+base2)*height
base 1=7
base2=21-6=15
height=6
Area of trapezoid =1/2( 7+15)*6= 66
whole area = area of square + area of trapezoid= 36+66=102
Answer 102

8 0

2 years ago

Find the distance and midpoint of a segment with the following endpoints: (5,-1) and (-9,-1)

Likurg_2 [28]

Answer:

$d = 14$

$(-2,-1)$

General Formulas and Concepts:

Order of Operations: BPEMDAS
Distance Formula: $d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$
Midpoint Formula: $(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})$

Step-by-step explanation:

Step 1: Define

(5, -1)

(-9, -1)

Step 2: Find distance d

Substitute: $d = \sqrt{(-9-5)^2+(-1-(-1))^2}$
Simplify: $d = \sqrt{(-9-5)^2+(-1+1)^2}$
Subtract/Add: $d = \sqrt{(-14)^2+(0)^2}$
Evaluate: $d = \sqrt{196}$
Evaluate: $d = \14$

Step 3: Find Midpoint

Substitute: $(\frac{5-9}{2},\frac{-1-1}{2})$
Subtract: $(\frac{-4}{2},\frac{-2}{2})$
Divide: $(-2,-1)$

7 0

2 years ago