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german
3 years ago
7

(MARKING BRAINLIEST)Which of these is the most helpful first step for solving Frank's equation, 2x+28=40?

Mathematics
1 answer:
riadik2000 [5.3K]3 years ago
7 0
Answer: B. Subtract 28 from both sides
Explanation: You need to subtract first because the variable needs to be by itself.
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Please help<br> Find f(-3).<br><br> f(x) = 4x + 7<br> A) -5 <br> B) 5 <br> C) 6 <br> D) 10
irina1246 [14]

Answer:

A

Step-by-step explanation:

To evaluate f(- 3) substitute x = - 3 into f(x), that is

f(- 3) = 4(- 3) + 7 = - 12 + 7 = - 5 → A

7 0
3 years ago
What is the product??
tangare [24]

Answer:

The answer to your question is the third choice

Step-by-step explanation:

To solve this problem, just multiply 6 by each of the numbers of the matrix and simplify.

            6   |  4  -2  1 |   =   | (6 x 4)   (6 x -2)   (6 x 1) |  

                 |  7   3   0|        | (6 x 7)   (6 x 3)    (6 x 0) |

                                    =   | 24   -12   6 |

                                         | 42    18    0 |

The first choice is wrong because only multiply by six the first row.

The second and fourth rows are incomplete.

7 0
3 years ago
Please help..........................
Kobotan [32]
The rate of change is
(2- (-1))/ (3/2-(-4)) => 3 / (11/2)
that is equal to 6/11 so almost 1/2
5 0
3 years ago
Which equation does not represent a function? Why? A) y = x2; There are two outputs for each input. B) y2 = 4x; There are two ou
natita [175]

Answer:

B) y² = 4x; There are two outputs for each input

Step-by-step explanation:

For an equation to be called a function, the input values for x must only result in a single output for y.

Based on this definition if a function, the functions y = x², y = -x and y = x are all functions because for any value of x imputed in them, we can only get one equivalent value of y.

The only exception is the function y²= 4x

For this function, for any value of x, there will be more than one output for y. Take x = 1 for example

y² = 4(1)

y² = 4

y = ±√4

y = ±2

This shows that y = 2 and -2

Also if x = 4

y² = 4(4)

y² = 16

y = ±√16

y = ±4

y = 4 and -4

No matter the value of x imputed, the output value y will always be two (a positive and a negative value)

Hence, option B is correct.

3 0
3 years ago
Given AD=8, AC=12, BC=15. Find the value of x that would make AADE-AACB<br> E<br> B
Bingel [31]

Answer:

DE = 10

Please put the Brainlest

4 0
3 years ago
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