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3 years ago

5

Simplify the given equation. 6 - (3x 10) 4(2 - x) = 15

2 answers:

zubka84 [21]3 years ago

7 0

Solve the brackets first :
6 - (15) (8-8x) = 15
6- (120 -120x) = 15

then solve remove the bracket and solve the number:
-114 +120x = 15

then move the number (-114) to the right side of the equation:
120x = 129

solve the equation by diving 129 with 120:
x = 1 3/40

mamaluj [8]3 years ago

4 0

Answer:

6 − 30 x , 8 − 4 x

Step-by-step explanation:

hopefully this helps

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Please help! 9/4(7+3-4*9)

Serga [27]

Answer:

58.5

Step-by-step explanation:

This expression should be simplified using order of operations. According to order of operations or PEMDAS, complete any numbers in parenthesis then any exponents, multiplication, division, additions and subtraction moving left to right through each operation.

Begin with Parenthesis.

(7+3-4*9) - Multiply first

(7+3-36) - Then add/subtract left to right

10 - 36 = -26

Replace -26 where the parenthesis were in the original expression.

9/4 (-26)

234/4

58.5

6 0

3 years ago

If the 6th term of an A.p is 11and its first term is 1 find the common diferent

hram777 [196]

Answer:

$thank \: you$

4 0

2 years ago

Read 2 more answers

A bag contains 6 black marbles and 4 white marbles. Sally takes out a black marble and does not put it back. What is the probabi

Neko [114]

Answer:

$\frac{5}{9}$

Step-by-step explanation:

$Total\ marbles=10\\\\Black=6\\\\White=4$

After removing one black marble:

$Total\ remaining\ marbles=9\\\\Remaining\ Black=5\\\\P(Black)=\frac{Remaining\ Black\ marbles}{Total\ remaining\ marbles}\\\\P(Black)=\frac{5}{9}$

6 0

3 years ago

The sum of three numbers is 8. The third is 9

Ierofanga [76]

Answer:

→<u> </u><u>First</u><u> </u><u>value</u><u> </u><u>is</u><u> </u><u>1</u>

→<u> </u><u>Second</u><u> </u><u>value</u><u> </u><u>is</u><u> </u><u>2</u>

→<u> </u><u>Third</u><u> </u><u>value</u><u> </u><u>is</u><u> </u><u>5</u>

Step-by-step explanation:

• let numbers be x, y and z

${ \tt{z = 8y - 9 - - - (eqn \: 1)}} \\ \\ { \tt{10x = 8y - 7 - - - (eqn \: 2)}} \\ \\ { \tt{x + y + z = 8 - - - (eqn \: 3)}}$

• from eqn 2, make x the subject:

${ \tt{x = \frac{8y - 7}{10} }} \\$

• substitute all variables in eqn 3:

${ \tt{ \frac{8y - 7}{10} + y + 8y - 9 = 8}} \\ \\ { \tt{8y - 7 + 10y + 80y - 90 = 80}} \\ \\ { \tt{98y = 177}} \\ \\ { \boxed{ \tt{ \: y = 1.8}}}$

• find z

${ \tt{z = 8y - 9}} \\ \\ { \tt{z = 8(1.8) - 9}} \\ \\ { \tt{z = 14.4 - 9}} \\ \\ { \boxed{ \tt{ \: z = 5.4 \: }}}$

• find x:

${ \tt{x = \frac{8(1.8) - 7}{10} }} \\ \\ { \tt{x = \frac{7.4}{10} }} \\ \\ { \boxed{ \tt{ \: x = 0.74 \: }}}$

Rounding to nearest value:

${ \boxed{ \rm{x = 1}}} \\ { \boxed{ \rm{y =2 }}} \\ { \boxed{ \rm{z = 5}}}$

7 0

2 years ago

What is the value of s in the equation 4(2s − 1) = 7s + 12? <br> 12<br> 16<br> 32<br> 34

erastova [34]

You start by distributing: 8s-4=7s+12
Combine like terms: 8s-7s=12+4
Solve and get your answer: s=16

3 0

3 years ago

Read 2 more answers