All categories

3 years ago

Please help asap 29 pts

Mathematics

2 answers:

Nookie1986 [14]3 years ago

8 0

Hi There!

Evaluate 4x - 3y + (7x - 7y) when x = 6 and y = -1.

Remember to follow P.E.M.D.A.S

-------------------------------------------------

Solution:

= 4(6) - 3(-1) + (7(6) - 7(-1))

= 4(6) - 3(-1) + (42 - (-7))

= 4(6) - 3(-1) + 35

= 24 - (-3) + 35

= 21 + 35

= 56

-------------------------------------------------

Answer: C) 56

-------------------------------------------------

Hope This Helps :)

Alexeev081 [22]3 years ago

3 0

Answer:

C. 56 is the correct answer, my bad.

Step-by-step explanation:

You might be interested in

Input is also called? Dependent Variable Independent Variable

irga5000 [103]

independent variable input

6 0

2 years ago

Read 2 more answers

in the year 2012 a farmer harvested 144 bags of maize.the following year the harvest decreased in the ratio 3:4.What was the tot

Alex

Answer:

252 bags of maize

Step-by-step explanation:

From the question, we are told that a farmer harvested maize

In the year 2012 = 144 bags of maize

In the year 2013(following year) the harvest decreased in the ratio 3:4

This means

3:4 = 2013: 2012.

Where number of bags harvested in 2013 = unknown = x

3/4 = x/ 144

Cross multiply 4x = 3 × 144

x = 3 × 144/ 4

× = 108

This means 108 bags of maize was harvested in 2013

The total number of bags harvested is = 108 + 144

= 252 bags of maize.

7 0

3 years ago

Brad wants the buy flowers for his friend with 27$. the daises are 1$ each and the roses 3$ each. He buys 3 more daises more tha

Alona [7]

3$ x 6 roses = 18$
1$ x 9 daisies = 9$

18 + 9 = 27$

Answer. 6 roses

8 0

3 years ago

How do you find the value of c that satisfy the equation:

victus00 [196]

Answer:

The value of c = -0.5∈ (-1,0)

Step-by-step explanation:

Step(i):-

Given function f(x) = 4x² +4x -3 on the interval [-1 ,0]

Mean Value theorem

Let 'f' be continuous on [a ,b] and differentiable on (a ,b). The there exists a Point 'c' in (a ,b) such that

$f^{l} (c) = \frac{f(b) -f(a)}{b-a}$

Step(ii):-

Given f(x) = 4x² +4x -3 …(i)

Differentiating equation (i) with respective to 'x'

f¹(x) = 4(2x) +4(1) = 8x+4

Step(iii):-

By using mean value theorem

$f^{l} (c) = \frac{f(0) -f(-1)}{0-(-1)}$

$8c+4 = \frac{-3-(4(-1)^2+4(-1)-3)}{0-(-1)}$

8c+4 = -3-(-3)

8c+4 = 0

8c = -4

$c = \frac{-4}{8} = \frac{-1}{2} = -0.5$

c ∈ (-1,0)

Conclusion:-

The value of c = -0.5∈ (-1,0)

8 0

3 years ago

When you use a transversal to construct a line parallel to a given line, how do you prove that the lines are parallel?

DedPeter [7]

Parallel lines never touch each other.

4 0

3 years ago