All categories

2 years ago

Eight more than seven times a number is equal to four more than five times the number. What is the number?

Mathematics

2 answers:

Alex17521 [72]2 years ago

8 0

Answer: -2

Step-by-step explanation:

convert it to a equation:

7x+8=5x+4

move x's to a side and numbers to the other

2x=-4

divide by 2

x=-2

Digiron [165]2 years ago

8 0

Let us consider the number to be 'n'.

Given condition :

7n + 8 = 5n + 4

Subtract '5n' from each side :

7n + 8 - 5n = 5n + 4 - 5n
2n + 8 = 4

Subtract '8' from each side :

2n + 8 - 8 = 4 - 8
2n = -4

Divide '2' from each side :

2n/2 = -4/2
$\fbox {n = -2}$

∴ The number is -2.

You might be interested in

Please help answer this

yuradex [85]

I think you can use cosine rule if only the lines that form the <52 are equal.

6 0

3 years ago

Give two ways to write the algebraic expression in words. n - 5

Taya2010 [7]

Five less than a number n

8 0

3 years ago

Triangle has side length 7, 10 and 12 is it a right triangle explain your reasoning

Vikentia [17]

Answer: No, because 7^2 + 10^2 is > 12^2

Step-by-step explanation: 7^2 +10^2= 49 + 100= 149 149 $\neq$ 144

5 0

3 years ago

( ANSWER FAST PLEASE!!!! )Maya’s paycheck shows that her gross pay was $497.32. Her payroll taxes totaled $83.12. How much was M

Phantasy [73]

Answer:

414.12

Step-by-step explanation:

8 0

3 years ago

Whoever puts there answer first get brainlest

Anvisha [2.4K]

Answer:

$\large Q1:\ x=18\ ft\\\\Q2:\ 6\ inches$

Step-by-step explanation:

Q3.

If ΔGHI and ΔJKL are similar, then the sides are in proportion:

$\dfrac{JL}{GI}=\dfrac{LK}{IH}$

We have

JL = x, GI = 9 ft, LK = 24 ft, IH = 12 ft.

Substitute:

$\dfrac{x}{9}=\dfrac{24}{12}$

$\dfrac{x}{9}=2$ multiply both sides by 2

$x=18\ ft$

Q4.

We must multiply the original length by a scale factor of 3/4:

$\dfrac{3}{4}\cdot8\ in=\dfrac{3}{1}\cdot2\ in=(3)(2)\ in=6\ in$

7 0

3 years ago