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
juin [17]
3 years ago
7

What is 9a - 3 (2a - 4) = 15

Mathematics
2 answers:
Mariulka [41]3 years ago
8 0
The answer is a=1

Here's the math:

9a-3(2a-4)=15

9a-6a+12=15-------------------------------Distribute the -3 across the parenthesis

3a+12=15-----------------------------------Combine like terms

3a=3----------------------------------------Subtract 12 from both sides

a=1-------------------------------------------Divide 3 from both sides

Hope this helped!! :))
faltersainse [42]3 years ago
5 0
<span>9a + -3(2a + -4) = 15 Reorder the terms: 9a + -3(-4 + 2a) = 15 9a + (-4 * -3 + 2a * -3) = 15 9a + (12 + -6a) = 15 Reorder the terms: 12 + 9a + -6a = 15 Combine like terms: 9a + -6a = 3a 12 + 3a = 15 Solving 12 + 3a = 15 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + 3a = 15 + -12 Combine like terms: 12 + -12 = 0 0 + 3a = 15 + -12 3a = 15 + -12 Combine like terms: 15 + -12 = 3 3a = 3 Divide each side by '3'. a = 1 Simplifying a = 1</span>
You might be interested in
The Alliance Corp. expects to sell the following number of units of copper cables at the prices indicated, under three different
Serggg [28]

Answer:

E(x) = 21834

Step-by-step explanation:

Given

The above data

Required

Determine the expected value E(x)

E(x) is calculated as thus;

E(x) = \sum xf(x)

Where f(x) represents the total sale of each outcome;

For A:

f(x) = 295 *34

f(x) = 10030

For B:

f(x) =510 *49

f(x) =24990

For C:

f(x) = 790 *59

f(x) = 46610

Hence, E(x):

E(x) = 0.5 * 10030 + 0.30 * 24990 + 0.20 * 46610

E(x) = 21834

8 0
3 years ago
3. Why is a square both a rhombus and a rectangle?
Korolek [52]
A rhombus is a shape that has all four sides equal, whether they be in the shape of a parallelogram, or a square, if it has all four sides equal length, it's a rhombus. The definition of a rectangle, is a shape that has four right angles. (90 degrees).

So, if a square has all four sides equal, and four right angles, it can be both a rhombus and a rectangle.

Not all rhombuses are squares, because not all have four right angles. Not all rectangles are squares, because they do not all have four equal sides. Not all rectangles are rhombuses because they do not have four equal sides.

But all squares are a rhombus and all squares are a rectangle.
7 0
3 years ago
Please anyone help me on this
vladimir2022 [97]

iiii wish iiiis corrrrrrect

3 0
3 years ago
My number had a tens digit that is 8 more than the ones digit. Zero is not one of my digits
marin [14]

The tens digit is 8 more than the ones digit. There isn't any zeros.

The maximum digit is 9 because 10 would be 2 digits, 1 and 0.

So say the tens digits is 9.

9 _

The ones digit is 8 less so 9-8 = 1

9 1

There isn't any zeros which is correct.

The answer is 91.  

4 0
3 years ago
A recipe for 10 servings of raspberry sorbet calls for 2 cups of water, 1/1.2 cups of granulated sugar, and 4 cups of frozen ras
babunello [35]
We know that 16 cups are in 1 gallon
We also know that 10 servings = 2 cups


Now that means 80 servings = 1 gallon
That means we need 320 / 80=4

It is A 4 gallons 
Hope this helps
3 0
3 years ago
Read 2 more answers
Other questions:
  • 2x+8y=54<br> x+9y=67<br> Solve the system by subtitution
    13·1 answer
  • It takes 1.5 cups of flour to make 1 dozen Mini Cupcakes. How many cups of flour are needed ti make 3 dozen cupcakes?
    14·2 answers
  • What is the area in square centimeters of 2.4 cm and 5.8 cm
    13·1 answer
  • Solve for B. R = x(A + B)
    8·2 answers
  • QUESTION 2
    6·1 answer
  • 2x-3y=-1, 2x+y=11solve the system equation
    11·1 answer
  • What is a inelastic collision <br> IF YOU WANT BRAINLIEST DESCRIBE IT IN YOUR OWN WORD PLS
    8·1 answer
  • Bob worked for four hours at the sporting good store and earned $8.25 per hour then he shoveled snow for two hours and earned $1
    15·1 answer
  • What is the area of the figure below?<br><br><br><br> 15 in 2<br> 20 in 2<br> 30 in 2<br> 25 in 2
    8·1 answer
  • En una caja hay el doble de monedas que en otra. Si se pasan 7 monedas de la
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!