3 years ago

What is the value of a in the equation 3+b=54 when b = 9

Mathematics

1 answer:

Fed [463]3 years ago

5 0

Answer:

3a + b = 54

3a + 9 = 54

3a = 54 - 9

3a = 45

3a / 3 = 45 / 3

a = 15

You might be interested in

Use the substitution method to solve.<br><br> y=5−3x<br> 5x−4y=−3

Vadim26 [7]

Well just substitute y (the first equation) into the second equation.
So
5x-4(5-3x)=-3
Then just solve the equation from there.
5x-20+12x=-3
17x=17
x=1
and if you need y, y=2

6 0

2 years ago

Ana drinks chocolate milk out of glasses that each hold 1/8 of a liter

maxonik [38]

Answer:

5 3/5

Step-by-step explanation:

Convert 1/8 to 10/80 and 7/10 to 56/80 56/10= 5 3/5

7 0

2 years ago

Help please I’m on a timer

iren2701 [21]

All real numbers greater than or equal to -3

7 0

3 years ago

I’m doing the Order of operations and I’m asking what 6 x (8-3) - 5^2

Ymorist [56]

Answer:

The answer is 5

4 0

3 years ago

2 consecutive even numbers add to equal 178. What is the smallest of the 2 numbers?

Diano4ka-milaya [45]

Answer:

The smallest number is 88

Step-by-step explanation:

Let

x ----> the first consecutive even number

x+2 --->the second consecutive even number

we know that

The linear equation that represent this problem is given by

$x+(x+2)=178$

solve for x

$2x=178-2\\2x=176\\x=88$

$x=88\\x+2=88+2=90$

therefore

The smallest number is 88

4 0

3 years ago