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tatiyna
2 years ago
14

(-7) + b = (-11) What is the answer?

Mathematics
2 answers:
Yanka [14]2 years ago
8 0

The answer to the given expression (-7) + b = (-11) is -4

<h3>How to solve an expression</h3><h3 />

(-7) + b = (-11) = -4

  • Removing the bracket

-7 + b = - 11

  • Collecting like terms

b = -11 + 7

b = -4

Learn more about evaluating expression:

brainly.com/question/4344214

Artyom0805 [142]2 years ago
7 0

( - 7) + b = ( - 11)

Remove unnecessary parentheses

- 7 + b =  - 11

Move the constant to the right-hand side and change its sign

b =  - 11 + 7

Calculate the sum

b =  - 4

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Factor 81a^2b^4-c^6 completely
olga nikolaevna [1]

Answer: (9ab^2+c^3)(9ab^2-c^3)

Step-by-step explanation:

81a^2b^4-c^6

(9ab^2)^2-(c^3)^2

(9ab^2+c^3)(9ab^2-c^3)

Hope this helps, HAVE A BLESSED AND WONDERFUL DAY! As well as a great Superbowl Weekend! :-)

- Cutiepatutie ☺❀❤

3 0
3 years ago
(Q6) Decide if the function is an exponential function. If it is, state the initial value and the base. y= -4.8·4^x
topjm [15]

Answer:

D

Step-by-step explanation:

Exponential equation takes the form  y=a*b^x  where

  1. a is the initial value ( a ≠ 0), and
  2. b is the base ( b ≠ 1)

The equation given in the problem can be written as  y=-4.8*4^x, so it is <em>an exponential equation, </em>  where a = -4.8 and b = 4.

Thus we can say that the initial value = -4.8 and the base is 4

The correct answer is  D

3 0
3 years ago
A portable electronic typewriter cost £180 in 1988. Its price rose by 5% in 1989. What was the new price?
elena-s [515]

\bf \begin{array}{|c|ll} \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{5\% of 180}}{\left( \cfrac{5}{100} \right)180}\implies 9~\hfill \stackrel{\textit{new price}}{180+9\implies 189}

5 0
3 years ago
What is 800 metres in centimetres
KIM [24]
Remember that
 1m=100cm
8m=800cm

800m=80,000cm




3 0
3 years ago
Read 2 more answers
Miguel rode his bicycle 4 miles less than 5 times the number of miles that Nathan rode. If Miguel rode his bicycle 6 miles, how
salantis [7]
5n-4 = 6 gives the equation for 5 times #Nathan rode less 4 miles which solves to n = 2
Nathan rode 2 miles. (5*2)-4 = 6   10-4=6 so 2 miles is right
4 0
3 years ago
Read 2 more answers
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