1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
FromTheMoon [43]
3 years ago
9

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

Mathematics
2 answers:
Bess [88]3 years ago
6 0

Use substitution method

3a+9=54

3a+9-9=54-9

3a= 45

divide by 3

3a/3= 45/3

a= 15

Answer is a= 15

Phoenix [80]3 years ago
6 0

Answer:

a = 15

Step-by-step explanation:

3a + b = 54

3a + 9 = 54

3a + 9 - 9 = 54 - 9

3a = 45

3a divided by 3 = 45 divided by 3

a = 15

3 x 15 + 9 = 54

45 + 9 = 54

54 = 54

You might be interested in
Question 6
marin [14]

Answer:

18 miles per hour is an outlier

the outlier decreases the mean speed

Step-by-step explanation:

the low number of 18 is way different from the other numbers being in the 30's and 40's

this 18 will bring the mean of all the numbers own because it is a smaller number.

8 0
3 years ago
For for each quadratic function below use method of completing the Square or averaging the x-intercept to write the equation in
lions [1.4K]

We have the expressions:

f(x)=x^2+6x+15y=x^2-4x+9f(x)=x^2-8xy=x^2+7x-2

Now, with this we operate as follows:

a)

f(x)=x^2+6x+15=x^2+6x+9+15-9\Rightarrow(x+3)^2+6

Then, the axis is x = -3 and the vertex (-3, 6)

b)

y=x^2-4x+9=x^2-4x+4+9-4\Rightarrow(x-2)^2+5

Then, the vertex is (2, 5) and the axis is x = 2.

c)

f(x)=x^2-8x+4-4\Rightarrow(x-2)^2-4

Then, the vertex is (2, -4) andd the axis is x = 2.

d)

y=x^2+7x-2=x^2+7x+\frac{49}{4}-2-\frac{49}{4}\Rightarrow(x+\frac{7}{2})^2-\frac{57}{4}

Then, the vertex is (-7/2, -57/4) and the axis is -7/2.

7 0
1 year ago
LINKS = reported ,, anyways I’ll give brainliest if ur right
Temka [501]

Answer:

1436.02

Step-by-step explanation:

7 0
3 years ago
Can anybody help? I don't get what this question means
VladimirAG [237]

Answer: B is the only true statement.

Step-by-step explanation:

4 0
3 years ago
The slope of the line passing through the points (6, -1) and (7, -2) is<br><br> -3<br> -1<br> 1
Ahat [919]

Answer:

-1

Step-by-step explanation:

when inputting our values into the formula for slope, we get (-2 - -1)/(7 - 6). Subtracting gives us -1/1 and our final answer is -1.

p.s tysm

3 0
3 years ago
Other questions:
  • Here Is My Last Question I Took A Snip Of 30 Points
    8·1 answer
  • Can someone plzzz help with numbers 11-12 plzzz show work cuz I’m not understanding this plz
    12·1 answer
  • What is 1/2 ÷ 7 Mathamatics​
    15·2 answers
  • 3,1,2,2,3,2,6,4 ayuda con esto
    6·1 answer
  • I need help ASAP, if you can. My problem is 3y-1(divided by)2=Z. I need to find Y.
    7·2 answers
  • Rachel runs 6 miles in 45 minutes. At the same rate how many minutes would she take to run 4 miles?
    8·2 answers
  • I WILL GIVE SO MANY POINTS PLS HELP
    11·2 answers
  • Write the equation of the line that passes through the points (0,7)
    6·2 answers
  • A full-grown giraffe is about 6 times heavier than a full-grown lion. A full-grown cheetah is about one-quarter as heavy as a fu
    13·2 answers
  • I need help with this problem and if you can help me I would definitely appreciate it :)
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!