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love history [14]
3 years ago
11

Evaluate the expression when x=-6. x² + 5x-5

Mathematics
1 answer:
Rus_ich [418]3 years ago
6 0

Answer:

1

Step-by-step explanation:

x² + 5x-5

Let x = -6

(-6)^2 + 5(-6) -5

36 -30 -5

6-5

1

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Your grades on three exams are 80, 93, and 91. What grade do you need on the next exam to have an average of 90 on the four exam
Pani-rosa [81]

<u>Answer:</u>

96

<u>Step-by-step explanation:</u>

Let's assume that the marks needed in the next exam is x. Then if the average becomes 90,

\frac{80 + 93 + 91 + x}{4}= 90

Now we can simply solve for x:

⇒ \frac{264 + x}{4}= 90

⇒ 264 + x = 360            [Multiplying both sides by 4]

⇒ x = 360 - 264            [Subtracting 264 from both sides]

⇒ x = \bf96

Therefore, you need to score 96 in your next exam to have an average of 90 on the four exams.

8 0
2 years ago
Tyler's mom purchased a savings bond for Tyler. The value of the savings bond increases by 4% each year. One year after it was p
Alla [95]

Answer:

150

Step-by-step explanation:

Since the value of the bond increases by 4% each year and only 1 year passed by then the ROI is not compounded and we only need to find the value before the 4% was implemented. In order to add 4% to a value we would multiply that value by 1.04 which increases that value by 4%. So, to find the value before the interest was added we would need to divide the new value by 1.04 instead.

$156 / 1.04 = $150

Finally, we can see that the value of the bond when Tyler's mom purchased it was 150

6 0
3 years ago
Round to the nearest tenths 2.52_______?&lt;br /&gt;&lt;br /&gt;
abruzzese [7]

1. 2.5

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5 0
3 years ago
I need help on this problem
borishaifa [10]
C/5=-8
C=-40 hope this helps
8 0
3 years ago
Read 2 more answers
So wait what is the answer then
katrin [286]

Answer:

to what??????

Step-by-step explanation: ???????

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3 years ago
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