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Romashka-Z-Leto [24]
3 years ago
9

If the value of b is 7 , then what is the value of the expression -3b2 + 25 = ?

Mathematics
1 answer:
Katarina [22]3 years ago
6 0
Hello there!

Evaluate
-3b² + 25
For b = 7
-3(7)² + 25
-3(49) + 25
-147 + 25
= -122

I hope that helps!
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The 15th and 21st terms of an arithmetic sequence are -67 and -97, what is the 30th term?
natka813 [3]

I believe it would be -132.

7 0
3 years ago
Graph the inequality.<br> -6 ≤y + 2x &lt; 15
omeli [17]

Inequalities help us to compare two unequal expressions. The correct option is B.

<h3>What are inequalities?</h3>

Inequalities help us to compare two unequal expressions. Also, it helps us to compare the non-equal expressions so that an equation can be formed. It is mostly denoted by the symbol <, >, ≤, and ≥.


The given inequality -6 ≤y + 2x < 15 can be broken into two small inequality, as shown below.

  • -6 ≤y + 2x
  • y + 2x < 15

Now, if we plot the inequality as shown below, then the area in which both the shaded region overlap is the area of the this inequality.

Hence, the correct option is B.

Learn more about Inequality:

brainly.com/question/19491153

#SPJ1

6 0
2 years ago
The question is<br>what is the distribution of the graph? explain how you know​
natka813 [3]

Answer:

Pyramid Distribution

Step-by-step explanation:

I don't know the answers but from what I know it has to be pyramid distribution or triangle distribution Hope This Helps!

7 0
2 years ago
she has to make a 25% deposit and 12 monthly payment of $550. How much does she end up paying for the television if it's cash pr
larisa86 [58]
I worked it out in photo.
She pays $8,475

3 0
3 years ago
Answer choices:<br>A (3 , -4)<br>B (4 , -7/2)<br>C (-5 , 8)<br>D (5/2 , -17/4)​
zhuklara [117]

Answer: D (5/2, -17/4)

Step-by-step explanation:  Using elimination your goal is to get rid or 1 variable  so you can solve for the one that's left.  By adding the -2y and 2y you will get 0.  You will also add the 3x+x (4x) and -1+11 (10).  You have now gotten rid of the y and have 4x=10.  By dividing each side by 4 we now know x =2.5.  D is the only possible solution with x=2.5 (5/2) but to solve for y you plug 2.5 in to an equation as x so) x-2y=11

                                                                           2.5-2y=11

                                                                            -2y=8.5                                                                        Answer D (5/2,-17/4)                                      y=-17/4 (4.25)

4 0
2 years ago
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