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
Dima020 [189]
2 years ago
5

8 - 5b = -7 ?? whats the b

Mathematics
2 answers:
Serggg [28]2 years ago
7 0
B=3
you subtract the 8 from the left then subtract it from the right giving you -5b=-15 then divide the -5 by both sides
hram777 [196]2 years ago
4 0

Answer:

b=3

Step-by-step explanation:

Isolate the b:

  • 8-5b=-7
  • Subtract 8, -5b=-15
  • Divide by -5, b=3

Check your answer:

  • 8-5(3)=-7
  • 8-15=-7
  • -7=-7
You might be interested in
Need an answer, please need an answer, please​
trasher [3.6K]

Answer:

Step-by-step explanation:

Area = 192 m²

Perimeter= 56 m

Width = x m

Perimeter = 56

2*(length + width) = 56

Divide the equation by 2

l + x = 56/2

l + x = 28

    l = 28 - x

Area = 192 m²

l * w = 192

(28 - x)*x = 192

28x - x*x = 192

0 = 192 - 28x + x²

x² - 28x + 192 = 0

2) Equation is a quadratic equation. The roots of this equation will the dimensions of the rectangular plot.

3) The roots represent the width and length  of the rectangle.

x² - 28x +192 = 0

Sum = -28

Product =192

Factors =  -16 , -12   {-16 +(-12) = -28  & (-12)*(-16) = 192}

x² - 28x + 192 = 0

x² - 12x - 16x + (-16)*(-12) = 0

x(x  -12) - 16(x - 12) = 0

(x - 12)(x -16) =0

x -12 = 0     ; x - 16 = 0

x = 12  ; x = 16

x = 12 ,16

4) Sum of the roots = 12 + 16 = 28

Sum of the roots = half of the perimeter

5) Product of the roots = 12*16 = 192 =  area of the rectangle.

6 0
2 years ago
Which is smaller 1/2 or 3/8​
ludmilkaskok [199]

Answer:

3/8 is smaller

Step-by-step explanation:

because it not have of 8 as for 1/2 is half so your answer is 3/8

7 0
3 years ago
How can you find the value of n in this equation?
lesya692 [45]
The answer would be n=37 because…
40+n=77
subtract 40 on both sides, cancelling it out on the left side and 77-40=37 so:
n=37
4 0
2 years ago
Read 2 more answers
Determine all the zeros of p(x)=x^4-9x^2+20
Snowcat [4.5K]

Answer:

ANSWER

Real roots

x=5

x=7

Complex roots

x=2+3–√i≈2.0+1.73205080756888i

x=2−3–√i≈2.0−1.73205080756888i

Step-by-step explanation:

7 0
2 years ago
1) Identify the x- and y-intercepts of the functions below. (Graphs shown below)
ioda
2 because it is not lollllllll
3 0
3 years ago
Other questions:
  • 18ft 5in -8ft 4in =
    6·2 answers
  • Solve for w 98 = 7w Simplify your answer as much as possible.
    7·2 answers
  • Which rational number equals 0.4?<br> A. 2 over10<br> B. 2 over 9<br> C.4 over 10<br> D.4 over 9
    13·2 answers
  • Find the solution to the system of equations given below using substitution. PLEASE ANSWER QUICKLY
    12·1 answer
  • Angle A measures (2x + 23)°. Angle B is supplementary to angle A and measures (4x + 46)°. Write and solve an equation to find th
    9·2 answers
  • A student uses the method of successive approximations to estimate a positive solution of f(x) = g(x), where f(x) = x2 + 10 and
    8·1 answer
  • Let f be the function given by f(x) = x +<br> Vx+1<br> X - 1<br> Find and simplify f(5).
    8·1 answer
  • A selective university advertises that 96% of its bachelor’s degree graduates have, on graduation day, a professional job offer
    8·1 answer
  • Answer well for 50 points and Brainliest
    10·2 answers
  • Plis help me here :(
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!