What’s the answer to 14?

Mathematics

1 answer:

vfiekz [6]3 years ago

7 0

Answer:

|t -(-5)| = 1.5
[-6.5, -3.5] = [minimum, maximum]

Step-by-step explanation:

The magnitude of the difference between the temperature (t) and -5 will be 1.5 at the limits:

|t -(-5)| = 1.5

This is equivalent to two equations:

t +5 = -1.5
t +5 = 1.5

In each case, the equation is solved by subtracting 5 from both sides:

t = -6.5 . . . . minimum allowed temperature
t = -3.5 . . . . maximum allowed temperature

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It would be amazing if someone helps

Xelga [282]

Answer:

8 ft²

Step-by-step explanation:

Given 2 similar triangles with ratio of sides = a : b, then

ratio of areas = a² : b²

Here the ratio of sides = 2 : 3, thus

ratio of areas = 2² : 3² = 4 : 9

let x be the area of Δ EFG, then by proportion

$\frac{4}{x}$ = $\frac{9}{18}$ ( cross- multiply )

9x = 18 × 4 = 72 ( divide both sides by 9 )

x = 8

The area of Δ EFG is 8 ft²

6 0

4 years ago

At the movie theatre, child admission is $5.90

Alik [6]

Let the number of children be c, and the number of adults be a.
c + a = 170 (total number of tickets)
Then the cost of each is: $5.90/child, $9.60/adult:
5.9c + 9.6a = 1269.40 (total sales)
Solving as 2 simultaneous equations, we first transform the first equation:
a = 170 - c
Substitute into the 2nd equation:
5.9c + 9.6(170 - c) = 1269.40
Solving gives c = 98, and a = 170 - 98 = 72. This means that 72 adult tickets were sold that day.

5 0

4 years ago

I need help with #10!

DiKsa [7]

Answer: 6 years old.

Step-by-step explanation:

For this exercise let "x" represents your present age.

According to the information provided in the exercise, you know that In three years, Chad will be three times your present age.

Then, your age in three years can be represented with the following expression:

$x+3$

Knowing at that time Chad's age will be three times yours and you will be half as old as old as Chad, you can write the following equation to represent this situation:

$x+3=\frac{3x}{2}$