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almond37 [142]
3 years ago
12

Identify the expression as a numerical expression or a variable expression. For a variable expression, name the variable. 1 × 12

Mathematics
2 answers:
Mekhanik [1.2K]3 years ago
7 0
A. Numerical expression.
lara31 [8.8K]3 years ago
7 0

Answer:A numerical expression

Step-by-step explanation:

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Graph the image of rhombus EFGH after a reflection across the line x = 3
igomit [66]

Answer:  see image

<u>Step-by-step explanation:</u>

Draw line x = 3.  Count how many units each point is away from line x = 3. Plot the new point the same number of units away from line x = 3 but in the opposite direction.

Point G is 4 units to the left of x = 3. The new point G' is 4 units to the right of x = 3.

Point F is 7 units to the left of x = 3. The new point G' is 7 units to the right of x = 3.

Point E is 7 units to the left of x = 3. The new point G' is 7 units to the right of x = 3.

Point H is 4 units to the left of x = 3. The new point G' is 4 units to the right of x = 3.

8 0
3 years ago
A jet’s speed in still air is 240 mph. One day it flew 700 miles with a tailwind (the wind pushing it along) and then returned t
Bess [88]

Speed of the wind for jet speed in still air 240mph and jet covers 700 miles with tailwind and same distance against the wind in total time of 6 hours is equal to 40mph.

As given in the question,

Given data:

Jet speed in still air = 240mph

Let x be the speed of the wind.

Speed with tail wind = 240 +x

Distance covered with tail wind = 700miles

Time taken by jet with tail wind

= Distance/ speed

= 700 / (240 +x)  __(1)

Speed against the wind = 240 - x

Distance covered against the wind = 700miles

Time taken by jet against the wind

= Distance/ speed

= 700 / (240 - x)  __(2)

Total time taken is 6 hours

[700 / (240 +x)] + [700 / (240 - x)] = 6

⇒ 700( 240 -x + 240 + x) = 6 (240 +x)(240 - x)

⇒ 700 ( 480) = 6 ( 240² -x²)

⇒ 700 (80) = 57600 -x²

⇒ x² = 57600 - 56000

⇒ x² = 1600

⇒ x = √1600

⇒ x= 40 mph

Therefore, speed of the wind for jet speed in still air 240mph and jet covers 700 miles with tailwind and same distance against the wind in total time of 6 hours is equal to 40mph.

Learn more about speed here

brainly.com/question/28224010

#SPJ1

6 0
1 year ago
a wire is in the shape of a rectangle.its length is 40cm and breadth is 22cm. if the same wire is rebent in the shape of a squar
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31cm is the side of the new square and this the largest area shape in square
3 0
3 years ago
BRO SOMEONE PLEASE HELP ME
zubka84 [21]

Answer:

9/10

Step-by-step explanation:

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2 years ago
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Answer:

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Step-by-step explanation:

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