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Elza [17]
3 years ago
14

Evaluate the expression when y=-3

Mathematics
2 answers:
Ratling [72]3 years ago
7 0
Y=-3
subtitute to y^2 + 6y +8
= (-3)^2 + 6(-3) + 8
= 9-18+8
= -1
valkas [14]3 years ago
5 0

Answer:

-1

Step-by-step explanation:

Substitute in the known variables:

y^2 + 6y + 8\\(-3)^2 + 6(-3) + 8\\

-3 * -3 = 9\\(-3)^2 = 9

9 + 6(-3) + 8\\9 + (-18) + 8\\9 - 18 + 8

= -1

Hope this helps!

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A school baseball team earned $3416.90 from selling 5716 tickets to their game. If grandstand tickets sold for 65 cents each and
Nataly [62]
Let g and b represent the numbers of grandstand and bleacher tickets sold.
.. g + b = 5716 . . . . . . . . . total number of tickets sold
.. 65g +40b = 341690 . . value of tickets sold

Using the first equation
.. g = 5716 -b
Sustituting into the second equation
.. 65(5716 -b) +40b = 341690
.. -25b + 371540 = 341690 . . . . . collect terms
.. -25b = -29850 . . . . . . . . . . . . . . subtract 371540
.. b = 1194 . . . . . . . . . . . . . . . . . . . . divide by -25

1194 bleacher tickets were sold.
6 0
3 years ago
The function V(t)=1,000(1.06)^t models the value of an investment after t years. What does the ".06" represent in the function?
slamgirl [31]

Answer:

A

Step-by-step explanation:

Looking at the function, we have;

V(t) = 1,000(1.06)^t

Mathematically, the amount earned on an investment that offers a particular constant percentage return to a particular number of years can be written as;

V = I(1 + r)^t

where V is the value of the investment after some certain number of years

I is the initial amount invested

r is the constant percentage increase

and t is the number of years.

Let’s now re-write what we can deduce in the question.

This is;

V(t) = 1000(1 + 0.06)^t

Thus what this 0.06 represents is r which is the constant interest rate

8 0
3 years ago
Good morning temperature is -15° but the afternoon the temperature raises by 20° right in addition expressions for the afternoon
stealth61 [152]

Answer:

+ 5°

Step-by-step explanation:

Given,

Good morning temperature = -15°

Raise in temperature = 20°

Afternoon temperature = -15° + 20°

           = + 5°

Hence, temperature in after noon is equal to + 5°.

7 0
3 years ago
Hey guys I need help with this
bulgar [2K]

Answer:

use the reverse Pythagorean therm BC= 4 DE= 4.8

Step-by-step explanation:

The square root of 5(squared) - 3(squared) = 4

the square root of 8(squared) - 6.4(squared) = 4.8

7 0
3 years ago
At the beginning of the month, there were 80 ounces of peanut butter in the pantry. Since then, our family has eaten 30% of the
ZanzabumX [31]

Answer:

A. 0.7 x 80

Step-by-step explanation:

At the beginning of the month, there is 100% remaining of the peanut butter. 100% = 80 oz. After eating 30%, that's 100%-30%=70%. 70%=0.7

5 0
2 years ago
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