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kirill [66]
3 years ago
12

Unit 7 - Mid Unit Assessment - Grade 8

Mathematics
1 answer:
Stolb23 [73]3 years ago
8 0

Answer:

1000 times

First, we estimated the Sun's width in terms of the Earth's breadth, then the Star's width in terms of the Earth's breadth, and for comparison, we did simple division, which revealed that the Star KW Sagittarii is 1000 times wider than the Sun.

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What is the equation of a line perpendicular to why=2x-6 that passes through (5,4)
almond37 [142]

Answer:

y = ½(13- x)

Step-by-step explanation:

Step 1. Find the<em> slope (m₁) of the original line </em>

The equation for the original line is

      y = 2x - 6

slope = m₁ = 2

Step 2. Find the <em>slope (m₂) of the perpendicular line </em>

m₂ = -1/m₁     Substitute the value of m₁

m₂ = -1/2

Step 3. Find the <em>equation for the perpendicular line</em>

y = mx + b     Substitute the value of m₂

y = -½x + b

The line passes through (5, 4).  

4 = -½(5) + b     Add 5/2 to each side

4 = -5/2 + b     Add 2 to each side

b = 13/2  

y = -½x + 13/2

y = ½(13 – x)  

In the image, below, the red line is the graph of your original equation.

The blue line passing through (5, 4) is the perpendicular line.

4 0
3 years ago
Michael has a $35 Starbucks gift card. He
Eddi Din [679]

Answer:

Each Caramel Macchiato is $5.60

Step-by-step explanation:

You could write the equation 5x+7=35

x stands for the price of each macchiato

the +7 is the $7 left-over after getting 5 macchiatos.

Then solve the equation.

1) subtract 7 on both sides

5x=28

2) divide by 5 on both sides

x=5.60

5 0
3 years ago
Can someone help me only answer if you know it no scam links or your getting reported.
vladimir2022 [97]

Answer:

3

Step-by-step explanation:

1. Find the area of the green block

Area = L x W x H

1/3 *1*1 = 1/3

2. Find the area of the blue block

1*1*1 =1

3.) Divide the blue area by the green area  

1 ÷ \frac{1}{3} = 3

Check : 1/3 + 1/3 + 1/3 = 3/3 3/3 = 1

3 green blocks can fit into 1 blue block

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3 years ago
Substitute the value of the slope and the values of x and y using the coordinates of the given point, then determine the value o
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Solve each system of equations by elimination. <br> y= -x+1 y=4x-14<br><br><br><br> By ELIMINATION
Valentin [98]
The answer is:
x=3, y= -2
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