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3 years ago

18x-6x+2x I need to know how to do it

Mathematics

2 answers:

bija089 [108]3 years ago

6 0

You need to combine like terms. So it would be 14x.

Anastaziya [24]3 years ago

5 0

Subtract 18 and 6 whitch gives you 12 and then add 2 to 12 whitch givrs you 14

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Factor 2x^2-4x-30 completely

Elza [17]

2x² - 4x - 30
2(x²) - 2(4x) - 2(15)
2(x² - 4x - 15)

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3 years ago

jordan has been offered two summer jobs. one job pays 7 owr hour. the other 50 a week plus 5 per hour. how many hours would jord

mart [117]

He would have to work 24 weeks to get the same amount from each job.

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3 years ago

Which expressions have a quotient of 4/5

goblinko [34]

Answer:

b and e

Step-by-step explanation:

a. 5/2 ÷ 1/2 =

5/2*2 =
5

b. 6/9 ÷ 5/6

2/3*6/5 =
2*2/5 =
4/5

c. 3/6 ÷ 2/5

1/2 * 5/2 =
5/4

d. 7 1/2 ÷ 6 =

15/2*1/6 =
5/(2*3) =
5/6

e. 1 1/3 ÷ 1 2/3=

4/3 ÷ 5/3 =
4/3 * 3/5 =
4/5

5 0

3 years ago

Read 2 more answers

Prices of Flowers:

jenyasd209 [6]

I disagree with her she will spent more than that because 6×5.29=31.74$ for 6 roses+4×3.59=14.36 4carnations +8×4.79=38.32$for 4 tulips and then 31.74+14.36+38.32=84.42$ all together

4 0

4 years ago

Read 2 more answers

Karina uses the system of equations below to compare the monthly utility costs in July and December for electricity, x, and natu

fiasKO [112]

Answer:

d. The cost of natural gas (y) = $0.83 per unit

Step-by-step explanation:

The explanation is shown below:-

the equation of system is:

750x + 17y = 141.61 (i)

300x + 30y =75.90 (ii)

as x indicates the cost of electricity and y indicates the costs of natural gas.

we will solve the both equation with the help of multiplication for (i) by 30 and for (ii) 75

$30\times (750x + 17y) 30\times 141.61\\\\$

after solve the above equation we will get

22,500x + 510y = 4248.3 (iii)

$75\times (330x + 30y) = 75\times 75.90$

after solve the above equation we will get

22500x + 2250y = 5692.5 (iv)

After deducting the equation (iii) and (iv) we will get

1740 y = 1444.2

After Dividing by 15 both sides,

116y = 96.28

So, Katrina simplify the above system using linear equation and reach at the equation that is

116 y = 96.28

By Division property of equality defines that divide the equal no. of both sides of an equation:

by Division of 116 to both sides of an equation, to get y:

$\frac{116y}{116} = \frac{96.28}{116}$

y = 0.83

So, the natural gas is $0.83 per unit

7 0

3 years ago