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Mnenie [13.5K]
3 years ago
12

Which expression represents the difference of 54 and 7 times a number

Mathematics
1 answer:
tekilochka [14]3 years ago
4 0

Answer:

The difference of fifty-four and seven times a number is written as 54 - 7x.

Step-by-step explanation:

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3/4+(1/4-1/6)= show work adding and subtracting fractions​
Fittoniya [83]

Answer:

5/6

Step-by-step explanation:

<u>Step 1:  Make all fractions have same denominator:  24</u>

3/4 * 6/6 = 18/24

1/4 * 6/6 = 6/24

1/6 * 4/4 = 4/24

<u>Step 2:  Plug in the new fractions into the old place</u>

3/4 + (1/4 - 1/6)

18/24 + (6/24 - 4/24)

<u>Step 3:  Solve inside parenthesis</u>

18/24 + (6/24 - 4/24)

18/24 + 2/24

<u>Step 4:  Add</u>

18/24 + 2/24

20/24

<u>Step 5:  Simplify</u>

20/24

10/12

5/6

Answer:  5/6

8 0
4 years ago
Solve the following quadratic equation 6x2 – 7x = 20
siniylev [52]

Answer:

<h2>x = 5/2 , x = - 4/3</h2>

Step-by-step explanation:

6x² - 7x - 20 = 0

Using method of factorization

Rewrite - 7x as a difference

That's

6x² + 8x - 15x - 20 = 0

Factor the expression

That's

2x( 3x + 4) - 5( 3x + 4) = 0

Which is

(2x - 5) (3x + 4) = 0

2x - 5 = 0

2x = 5

Divide both sides by 2

x = 5/2

3x + 4 = 0

3x = - 4

Divide both sides by 3

x = -4/3

Hope this helps you

5 0
3 years ago
Read 2 more answers
Ready Classroom<br> Grade 8 Volume 1<br> Mathematics
Karo-lina-s [1.5K]
What is the question that you need
7 0
4 years ago
Decide whether or not this headline is true:
mote1985 [20]
I think it's false. I think more than 7%
3 0
3 years ago
The exponential function f, represented in the table, can be written as
Bond [772]

Answer:

$ f(x) = 9 \bigg(\frac{5}{3} \bigg)^x $

Step-by-step explanation:

Note the f(0) = 9

and f(1) = 15

Since, f(x) = abˣ substituting for x, we get:

9 = f(0) = a . b⁰ = a

⇒ a = 9

Now, f(1) = 15

⇒ 15 = a . b¹

⇒ 15 = 9 . b

⇒ b = $ \frac{15}{9} $

Therefore, $ f(x) = 9 . \bigg( \frac{5}{3} \bigg) ^x $

Hence, the answer.

8 0
4 years ago
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