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USPshnik [31]
3 years ago
5

Use the quadratic formula to solve x^2 + 3^x - 28 = 0

Mathematics
1 answer:
Mama L [17]3 years ago
3 0

Step-by-step explanation:

x^2 + 3x - 28 = 0

x^2 - 7x + 4x - 28 = 0

x(x-7) + 4(x-7) = 0

(x+4)(x-7)= 0

x+4=0 or x-7=0

x= -4 or x=7

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Consider the transformations of a rectangle ABCD to produce a rectangle DEFG. Which sequence of Transformations results in recta
liraira [26]

Answer:

A.

Step-by-step explanation:

Rotations preserve shape <u>and</u> size, but a dilation with a factor of 3, no matter where in the sequence of transformations it is, results in a shape 3 times larger.  So rotation followed by the dilation will end up being a rectangle similar to the original but 3 times its size.

5 0
3 years ago
The number of eggs in the refrigerator e decreased by 5 equals 18
AnnZ [28]

Answer:

e=23

Step-by-step explanation:

The equation representing this scenario is e-5=18.

Add 5 to both sides and you get e=23 (eggs)

7 0
3 years ago
How is the graph of y = -8x2 - 2 different from the graph of y = -8x2?
Aleks04 [339]

Answer:

(Answer D)

Step-by-step explanation:

Please use " ^ " to indicate exponentiation:  y = -8x^2 - 2, y = -8x^2

The graph of y = -8x^2 is an inverted parabola with vertex at (0, 0).

That of y = -8x^2 - 2 is the same as above, except that the whole graph has been shifted 2 units down (Answer D).

4 0
3 years ago
Two quantities, Pand Q, are connected by
frez [133]

Answer:

P = 0.5Q - 20

Step-by-step explanation:

P = kQ + c

substitute Q = 60 , P = 10 into the equation

10 = 60k + c → (1)

substitute Q = 240, P = 100 into the equation

100 = 240k + c → (2)

subtract (1) from (2) term by term to eliminate c

90 = 180k ( divide both sides by 180 )

\frac{90}{180} = \frac{1}{2} = 0.5 = k

substitute k = 0.5 into (1) and solve for c

10 = 60(0.5) + c

10 = 30 + c ( subtract 30 from both sides )

- 20 = c

then

P = 0.5Q - 20

8 0
2 years ago
Annie wants to use the problem-cause-solution order to organize a persuasive speech to reduce violence on campus. she begins by
ollegr [7]

The possible next step that Annie should use in the persuasive speech is to discuss the lack of street lamps and campus security as causes of the problem.

<h3>What is a persuasive speech?</h3>

It should be noted that a persuasive speech simply means a speech that is used to convince an individual to agree to a particular perspective.

In this case, the possible next step that Annie should use in the persuasive speech is to discuss the lack of street lamps and campus security as causes of the problem.

Learn more about speech on:

brainly.com/question/25887038

7 0
2 years ago
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