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3 years ago

Please helppppppppppp

Mathematics

2 answers:

Eduardwww [97]3 years ago

8 0

Answer:

see explanation

Step-by-step explanation:

Substitute the given values of x into f : x → $\frac{3}{7}$ x + 4

x = - 14 → ( $\frac{3}{7}$ × - 14) + 4 = (3 × - 2) + 4 = - 6 + 4 = - 2

x = 28 → ( $\frac{3}{7}$ × 28) + 4 = (3 × 4) + 4 = 12 + 4 = 16

x = $\frac{7}{8}$ → ( $\frac{3}{7}$ × $\frac{7}{8}$ ) + 4 = $\frac{3}{8}$ + 4 = $\frac{3}{8}$ + $\frac{32}{8}$ = $\frac{35}{8}$

x = - $\frac{2}{9}$ → ( $\frac{3}{7}$ × - $\frac{2}{9}$ ) + 4 = ( $\frac{1}{7}$ × - $\frac{2}{3}$ ) + 4 = - $\frac{2}{21}$ + $\frac{84}{21}$ = $\frac{82}{21}$

Hatshy [7]3 years ago

6 0

Answer:

See below in bold.

Step-by-step explanation:

1. 3/7 * -14 + 4

= -6 + 4

= -2.

2. 3/7 * 28 + 4

= 12 + 4

= 16.

3 3/7 * 7/8 + 4

= 3/8 + 4

= 35/8 or 4 3/8.

4. 3/7 * -2/9 + 4

= -6/63 + 4

= -2/21 + 4

= -82/21 or -3 19/21.

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3 years ago

At the Science Museum, there is an exhibition with 150 displays about energy.

tatuchka [14]

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3 years ago

one month Miguel rented 5 movies and 3 video games for a total of $27. The next month he ordered 2 movies and 6 video games for

34kurt

Answer:

The price of each movie is $2.25

The price of each video games is $5.41

Step-by-step explanation:

Given as :

Miguel rented 5 movies and 3 video games for a total cost = $27

Next day Miguel rented 2 movies and 6 video games for a total cost = $36

Let The cost of each movie = $m

And The cost of each video game = $v

Now, According to question

5 m + 3 v = 27 .....1

2 m + 6 v = 36 ...........2

Now, solving the equation

2 × (5 m + 3 v) - (2 m + 6 v) = 2 × 27 - 36

Or, 10 m + 6 v - 2 m - 6 v = 54 - 36

Or, (10 m - 2 m) + (6 v - 6 v) = 18

Or, 8 m + 0 = 18

∴ m = $\dfrac{18}{8}$ = $\dfrac{9}{4}$

i.e m = $2.25

So, The price of each movie = m = $2.25

Again, put the value of m into eq 2

So, 2 × 2.25 + 6 v = 36

Or, 4.5 + 6 v = 36

Or, 6 v = 36 - 4.5

Or, 6 v = $32.5

∴ v = $\dfrac{32.5}{6}$

i.e v = $5.41

So, The price of each video games = v = $5.41

Hence, The price of each movie is $2.25 and

The price of each video games is $5.41 Answer

7 0

3 years ago

Please helppppppppppp​

Please helppppppppppp