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
Tanzania [10]
4 years ago
11

If ax + y=23, 3x - y = 9, and x =8, what is the value of a ?

Mathematics
1 answer:
inna [77]4 years ago
6 0

Answer:

a = 1

Step-by-step explanation:

x = 8

3x - y = 9

3(8) - y = 9

24 - y = 9

-y = 9 - 24

-y = -15

y = 15

ax + y = 23

a(8) + 15 = 23

8a = 23 - 15

8a = 8

a = 8/8

a = 1

You might be interested in
HEB has dish soap that costs $2.80 for a 12oz bottle. Fiesta has the same dish soap that costs $2.00 for a 8 oz tube.
s2008m [1.1K]

Answer:

The unit rate at HEB is $0.23 per ounce. The unit rate at Fiesta is $0.25 per ounce. So HEB has the better buy for dish soap.

Step-by-step explanation:

To calculate unit rate, you divide the price by the oz.

So for HEB, you should do $2.80/12 oz. This will equal to $0.23 per ounce. For Fiesta, you should do $2.00/8 oz. This will equal to $0.25 per ounce.

To determine which one is the better buy, the lower priced one is better, meaning HEB is the better buy.

4 0
4 years ago
Evaluate the expression for x = 15 x - 9
vesna_86 [32]

[ Answer ]

\boxed{6}

[ Explanation ]

X = 15

X - 9

Substitute 15 For X

15 - 9

= 6

\boxed{[ \ Eclipsed \ ]}

8 0
3 years ago
Read 2 more answers
Dan rolled a cube 20 times. The cube landed on the number 3 six times. What is the experimental probability that dan will roll a
Paraphin [41]
5/6 is probability of times rolled
7 0
3 years ago
Please help asap :(((
Alecsey [184]
You are right the answer is B
5 0
3 years ago
Read 2 more answers
Simplify each expression. Write your answers in exponential notation.
GenaCL600 [577]

\bf ~~~~~~~~~~~~\textit{negative exponents}
\\\\
a^{-n} \implies \cfrac{1}{a^n}
\qquad \qquad
\cfrac{1}{a^n}\implies a^{-n}
\qquad \qquad
a^n\implies \cfrac{1}{a^{-n}}
\\\\[-0.35em]
\rule{34em}{0.25pt}\\\\
\left( \cfrac{36b^3}{9a^5} \right)^3\implies \left( \cfrac{4b^3}{a^5} \right)^3\implies \stackrel{\textit{distributing the exponent}}{\left(\cfrac{4^3b^{3\cdot 3}}{a^{5\cdot 3}}\right)}\implies \cfrac{64b^9}{a^{15}}

3 0
3 years ago
Other questions:
  • Use a graph to solve the equation. Check your solution.
    12·1 answer
  • What is the y intercept for y=1.5x
    5·2 answers
  • how much of a brand A fruit punch (35% fruit juice) must be mixed with 9L of grape juice to create a mixture containing 74% frui
    6·1 answer
  • Which number line represents the solutions to |x + 4| = 2? A number line from negative 7 to 7 in increments of 1. Two points, on
    15·2 answers
  • A bicycle wheel has a diameter of 28 inches. Which expression can be used to describe the circumference of the wheel as it relat
    6·1 answer
  • Find the slope of the line graphed below.
    13·1 answer
  • Please help I’ll mark brainlyest.
    15·2 answers
  • Given the function f(x) = -x + 4, then what is f(-3x) as a simplified<br> polynomial?
    8·1 answer
  • Need help with this question ASAP!
    5·1 answer
  • Answer Part A and Part B for the triangle shown
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!