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True [87]
3 years ago
15

Does anyone know the answer to this math question please help

Mathematics
1 answer:
ivann1987 [24]3 years ago
3 0

Answer:

y= − 5 x ^2 − 40 x − 78

Step-by-step explanation:

Write in standard form.

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(−7.9 + (−3.4)) + (8.2 + 2.1)
Natasha_Volkova [10]
The answer is -1, when adding both sides.
8 0
3 years ago
Is -76.15 an interger
natulia [17]

An integer is a natural number (1, 2, 3 ...), zero, or the negative of a natural number.


-76.15 is none of those,


Answer: NO



5 0
3 years ago
Read 2 more answers
Hello, how can I do this exercise the help is appreciated
Semenov [28]

Answer:

5, 8, 11, 14, 17,....

f(n) = 5+3n where n is the number of steps after the first two. 7 steps is 20 faces.

Step-by-step explanation:

A sequence is a list of numbers that are related. The first number in the sequence is 5 since the first part of the stairs has 5 faces (5 squares, the dark don't count). Every time you add a "stair" you add 2 blocks - one underneath to support and one as the step. This adds 3 faces. So 5 becomes 8. Repeat and 8 becomes 11. You add 3 faces each time. So the sequence is

5, 8, 11, 14, 17,....

This is a constant pattern of adding 3 each time after the initial start. So we can write a rule. We start with 5 + 3(each stair step). So if the cube is 7 stairs high, that is 5 more repetitions of adding blocks after the start (remember the start has 2 steps already). So 5 + 3(5) = 20. 7 steps high will have 20 faces.

7 0
3 years ago
For what interval is the function f(x) = (20 + \sqrt{x}) / (\sqrt{20 + x}) continuous?
konstantin123 [22]
Try this solution:
1. according to the condition
\left \{ {{x \geq 0} \atop {20+x\ \textgreater \ 0}} \right. \ =\ \textgreater \  \ x \geq 0.
2. for more details see the attached graph.

Answer: [0;+oo)

5 0
3 years ago
Choose the equation for the relationship shown in the graph.
uysha [10]

Answer:

B) y = x - 50

Step-by-step explanation:

It is B because the graph's y-intercept lies on the point (0, -50), hence the equation, y = x <u>- 50</u>. In addition, you can verify that B is the correct answer because the slope of the graph is positive, and so the x-value also must be positive.

7 0
2 years ago
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