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dimaraw [331]
3 years ago
13

Alex is 4 years younger than 2 times his sister's age. Write a rule that represents Alex's age x as a function of his sister's a

ge y. How old is Alex, if his sister is 11?
Mathematics
2 answers:
sesenic [268]3 years ago
7 0

Answer:

alex is 18 sis is 11

Step-by-step explanation:

Vesna [10]3 years ago
6 0

Answer:

y = 2x - 4; Alex is 18.

Step-by-step explanation:

Since Alex is 4 years younger than 2 times his sister's age, and his sister is y and Alex is x, the function of y to x must be y = 2x - 4.

According to the rule, if Alex's sister is 11, Alex is 2 times that minus four. If you calculate that, you get

11 * 2 = 22

22 - 4 = 18

So Alex is 18 if his sister is 11.

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Point G is located at (6, 2) on the coordinate plane. Point G is reflected over the y -axis to create point G^ prime . What orde
Lilit [14]

Answer:

The ordered pair that best describes the location of G' is (-6,2).

Step-by-step explanation:

Reflecting a point over the y-axis:

When a point (x,y) is reflected over the y-axis, it's x coordinate is multiplied by -1, while the y-coordinate stays the same. Thus:

(x,y) -> (-x,y).

Point G is located at (6, 2)

When reflected over the y-axis:

G'(-6,2).

The ordered pair that best describes the location of G' is (-6,2).

5 0
2 years ago
A jet is coming in for a landing. It's currently 25,000 feet in
Mariana [72]

The angle of depression is 29.0521°. So it is a safe landing.

Step-by-step explanation:

Step 1:

The plane is flying at a height of 25,000 feet and 45,000 feet away from the landing strip. Assume it lands with an angle of depression of x°.

So a right-angled triangle can be formed using these measurements. The triangle's opposite side measures 25,000 feet while the adjacent side measures 45,000 feet. The angle of the triangle is x°.

To determine the value of x, we calculate the tan of the given triangle.

tanx = \frac{opposite side}{adjacent side}.

Step 2:

The length of the opposite side = 25,000 feet.

The length of the adjacent side = 45,000 feet.

tan x = \frac{25,000}{45,000} = 0.5555.

So x = 29.0521°. Since x < 30°, it is a safe landing.

8 0
3 years ago
Dana wants to make cookies. The recipe calls for 2/3 cups of flour for two dozen. She only wants to make one dozen,so how much f
Veseljchak [2.6K]

Answer:

1/3 c flour

Step-by-step explanation:

divide 2/3 in half because you're going from 2 dozen to 1 dozen

2/3 ÷ 2 equals 2/3 x 1/2 which equals 1/3

3 0
3 years ago
4) Find the total cost of a $0.95 pen with a 60% markup.
weqwewe [10]
$1.52 is the total cost. Good luck and have an amazing day!
7 0
3 years ago
) Josef paid $10 for 6 avocados at the Grocery Mart. He wants to know what the price would be
Amiraneli [1.4K]

Answer:

5.00

Step-by-step explanation:

the price for 3 avacados is 3.00 because 6 are 10 if you divide 10 by 2 you get 5

6 0
3 years ago
Read 2 more answers
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