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3 years ago

8x-2=-947x What does X stand for ?

Mathematics

2 answers:

Ainat [17]3 years ago

8 0

I don’t know if that helps but here you go...

Lyrx [107]3 years ago

4 0

Answer:

-7

Step-by-step explanation:

1st, regroup terms.

8x-2 = 7x -9

Next, subtract 7x from both sides.

8x-2-7x = -9

Next, Simplify 8x-2-7, to -2.

x-2 = -9

Add 2 to both sides.

x = -9 + 2

Simplify −9+2 to −7.

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Someone please explain step by step.

dolphi86 [110]

Answer:

${10}^{th} \: term = \frac{5}{512}$

Step-by-step explanation:

geometric progression formula:

${n}^{th} \: term = ar ^{n - 1}$

given:

common ratio, r = 1/2

$first \: term \: = 5$

1) find the value of a

${n}^{th} \: term \: = a {r}^{n - 1}$

we're finding the 1st term, so substitute 1 into n:

${1}^{st} \: term = a( \frac{1}{2} ) {}^{1 - 1}$

first term is 5. so we substitute 5 into the equation:

$5 = a(1)$

$a = 5$

2) find the 10th term

we're finding the 10th term, so substitute 10 into the equation and don't forget to substitute 5 into a:

${10}^{th} \: term = 5( \frac{1}{2} ) {}^{10 - 1}$

${10}^{th} \: term = 5( \frac{1}{512} )$

${10}^{th} \: term = \frac{5}{512}$

6 0

3 years ago

Jane is Billy's sister, Jane is 3 years older than 2 times Billy's age. If Billy is 7 years old then how old is Jane?

Cerrena [4.2K]

J(Jane) + 3 = B(Billy)*2
J + 3 = 7(2)
J + 3 = 14
J = 14-3
J = 11 (Jane is 11)Cheers!

3 0

3 years ago

Read 2 more answers

Find the product.

Komok [63]

Always when multiplying a positive number by a negative number, the answer is negative. So C and D Are out.
You calculate and Get -84

So, the Answer is A (-84)

Hope this Helps :)

6 0

3 years ago

Read 2 more answers

The line y = x is transformed to create the line y = − 1 2 x − 1 . Which of the following may be used to describe the transforma

atroni [7]

Answer:

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

(a) A square has a perimeter of 20 m. What is the length of each side?

Goshia [24]

Answer:

A= 5

B= 3

Step-by-step explanation:

A= 5 +5+5+5= 20

B= 3 (length) x 3 (width)

5 0

2 years ago