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2 years ago

Find value of the expressions a =4, b=2 and c =3 then 2(a+3b)-(b+c)

Mathematics

1 answer:

Blizzard [7]2 years ago

8 0

Answer:

2(a+3b)-(b+c)=

2(4+3(2))-(2+3)=

2(4+6)-(5)=

2(10)-5=

20-5=

Step-by-step explanation:

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Solve y=x^2+23 for x

Step2247 [10]

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3 years ago

Ali, Carrie and Bryan received a sum of money. Bryan's money was 3/5 as much as Ali's money. The ratio of Ali's money to Carrie'

monitta

Answer:

The sum of money received by Ali, Carrie and Bryan is $ 740.

Step-by-step explanation:

At first we translate mathematically each sentence:

(i) Ali, Carrie and Bryan received a sum of money.

$a$ - Ali's money.

$b$ - Bryan's money.

$c$ - Carrie's money.

(ii) Bryan's money was $\frac{3}{5}$ of Ali's money.

$b = \frac{3}{5}\cdot a$ (1)

(iii) The ratio of Ali's money to Carrie's money was 4 : 1.

$\frac{a}{c} = 4$ (2)

(iv) Ali had $ 160 more than Bryan.

$a = b + 160$ (3)

After some algebraic handling, we have the following system of linear equations:

$3\cdot a - 5 \cdot b = 0$ (1b)

$a - 4\cdot c = 0$ (2b)

$a - b = 160$ (3b)

The solution of the system is: $a = 400$ , $b = 240$ , $c = 100$

The sum of money is:

$s = a + b + c$

$s = 740$

The sum of money received by Ali, Carrie and Bryan is $ 740.

4 0

3 years ago

Helppppppppppp. Pleaseeeeeeeeeeeeeeeeeeeeeeeeeeee

olga55 [171]

Answer:

Step-by-step explanation:

form a proportion

12/2=42/x

cross multiply

12x=84

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3 years ago

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In order to find the total number of roses, we can use multiplication. Since there are 6 roses on each bush, we can say that the answer is: 6+6+6+6+6+6+6+6+6+6. Since multiplication is a way to quickly add the same number, we can use 6*10. This becomes 60.

Good luck :D

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3 years ago

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Find value of the expressions a =4, b=2 and c =3 then 2(a+3b)-(b+c)​

Find value of the expressions a =4, b=2 and c =3 then 2(a+3b)-(b+c)