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
AlekseyPX
3 years ago
15

Help please and explain

Mathematics
1 answer:
Helen [10]3 years ago
7 0

Solution for -3c-2=7 equation:

Simplifying

-3c + -2 = 7

Reorder the terms:

-2 + -3c = 7

Solving

-2 + -3c = 7

Solving for variable 'c'.

Move all terms containing c to the left, all other terms to the right.

Add '2' to each side of the equation.

-2 + 2 + -3c = 7 + 2

Combine like terms: -2 + 2 = 0

0 + -3c = 7 + 2

-3c = 7 + 2

Combine like terms: 7 + 2 = 9

-3c = 9

Divide each side by '-3'.

c = -3

Simplifying

c = -3

You might be interested in
A rectangular computer table measures 30 inches by 50 inches. We need to cover it with square tiles. What is the side length of
jekas [21]

Answer:

a) 10*10 inch, b)yes, c) 15

Step-by-step explanation:

a)

we need to calculate the Greatest Common Factor between 30 and 50

30 = 2 \times 3 \times 5 \\ 50 = 2 \times 5 \times 5 \\ GCM = 2 \times 5 = 10

then, the square tiles will be 10 inch *10 inch

b) it will change because they don't need to have the largest slab possible so they will use any other comon factor with a size they consider correct for the cheese.

c)

30 \div 10 = 3 \\ 50 \div 10 = 5 \\ 3 \times 5 = 15

15 squares of 10inch*10inch of cheese could be cut.

6 0
3 years ago
Read 2 more answers
What is the center of the circle having the equation (x – 7)2 + (y + 2)2 = 121? What is the radius?
Sholpan [36]
<span>The standard equation of a circle with center (h, k) and  radius : r 
is (x - h)² + (y - k)² = r².
h=7     k = -2      r = 11
the center is ( 7, -2)   and radius 11</span>
5 0
3 years ago
Read 2 more answers
Each machine at a certain factory can produce 90 units per hour. The setup cost is 20 dollars for each machine and the operating
sasho [114]

Answer:

a)  Total Cost=20n+\frac{(\frac{40000}{90}*26)}{n}

b)  n=24

Step-by-step explanation:

From the question we are told that:

Rate r=90 units per hour

Setup cost =20

Operating Cost =26

Units=40000

Generally the equation for Total cost is mathematically given by

Total Cost=20n+\frac{(\frac{40000}{90}*26)}{n}

T_n=20n+\frac{11556}{n}\\\\T_n=\frac{20n^2+11556}{n}.....equ 1

Differentiating

T_n'=\frac{n(40n)-(40n^2+11556)}{n_2}\\\\T_n'=\frac{20n^2-11556}{n^2}.....equ 2

Equating equ 1 to zero

0=\frac{20n^2+11556}{n}

n=24

Therefore

Substituting n

For Equ 1

T_n=\frac{20(24)^2+11556}{24}

F(n)>0  

For Equ 2

T_n'=\frac{20(24)^2-11556}{24^2}

F(n)'<0

3 0
3 years ago
Help me find the sum of
BigorU [14]

Answer:

5\frac{4}{9}

Step-by-step explanation:

\frac{19}{9} + (-\frac{2}{9} ) + \frac{32}{9} = \frac{49}{9} = 5\frac{4}{9}

4 0
3 years ago
Read 2 more answers
Y=4x^2+4 opens upward or downward
maxonik [38]

Answer:

upward

Step-by-step explanation:

y=4x²+4

Look at the coefficient of x²

If it is positive, it opens upward, IF it is negative, it opens downward.

In this case, the x² coefficient is +4, hence it opens upward

(see attached for plot)

3 0
4 years ago
Other questions:
  • Find the first 5 terms of the sequence: a1 = 500, an = (an-1)/5.
    15·1 answer
  • Compare the following numbers using division which of the statements below is expresses the relationship between the numbers
    14·2 answers
  • What is the value of x?
    10·2 answers
  • Ֆին (Find) (√3+√7) (√7-√3)​
    12·2 answers
  • Consider the function y=0.88(1.1)x.identify what type of function this is
    11·1 answer
  • What is the value of the expression when x=3?<br> 4x - 4x + x*
    5·2 answers
  • What is the area of the shaded region in the figure above? Please help i don't understand triangles. Also can you explain how to
    5·1 answer
  • Help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    10·2 answers
  • a cycle travel 1st km at therateof 10 km per hour the second km at the rate of 3 per hour and third at therate of 6 km.find the
    9·1 answer
  • 2. Find the measure of each exterior angle of regular polygons (any two). (2x2=4).
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!