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mars1129 [50]
2 years ago
14

Find the sum of 3x² + 5x - 1 and x² - 2x -7​​

Mathematics
2 answers:
vova2212 [387]2 years ago
8 0

Answer:

4x^2+3x-8

Step-by-step explanation:

gizmo_the_mogwai [7]2 years ago
7 0

<h3>{3x}^{2}  + 5x - 1 +  {x}^{2}  - 2x - 7 \\  {3x}^{2}  +  {x}^{2}  + 5x - 2x - 1 - 7 \\  {4x}^{2}  + 3x - 8</h3>
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What's an equation for A new plasma-screen television costs $5250. A family makes a down payment of $552 and pays off the balanc
Lady_Fox [76]
The solution to the problem is as follows:


<span>C = D - C / M
 
Cost = Deposit - Cost / Months
 
5250 = 5250 - 552 / 24
</span>

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
3 0
3 years ago
Please I am in need of help if you go solve all my questions o will mark brainliest
Serga [27]

Answer:

top left

Step-by-step explanation:

Consider finding points on the graph using the equation.

x = 0 : f(0) = 0.5^{0} + 4 = 1 + 4 = 5 ← y- intercept

Since y- intercept is 5, this excludes the lower 2 graphs, which have y- intercepts of 1

x = 1 : f(1) = 0.5^{1} + 4 = 0.5 + 4 = 4.5 ⇒ (1, 4.5 )

x = - 1 : f(- 1) = 0.5^{-1} + 4 = \frac{1}{0.5} + 4 = 2 + 4 = 6 ⇒ (1, 6 )

These points lie on the top left graph

5 0
3 years ago
What are the signs of the coordinates (x, y) of point Q"?
Vlad1618 [11]

Answer:

Can you please maybe send a picture of the question? It'll help me understand more on it.

3 0
3 years ago
Select the correct answer.
m_a_m_a [10]
B).








hope this helps
5 0
4 years ago
B(t)=50(1.4)^t
olasank [31]
B (t) = 50 (1.4) ^ t
 What is the y-intercept of the function? 
 The intersection with the y-axis of the function you find when x = 0.
 In this case we have:
 For t = 0:
 B (0) = 50 (1.4) ^ 0
 B (0) = 50 * (1)
 B (0) = 50
 Answer: 
 the y-intercept of the function is:
 B (0) = 50
 What does this mean in the context of the problem?
 You must place the complete statement to answer exactly.
 However, in any problem of exponential type, it means the initial quantity of something.
 If we refer to the increase in population over time, then the intersection with the y-axis is the initial population.
8 0
3 years ago
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