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Karolina [17]
4 years ago
9

Evaluate this expression: 10x^2-5x+10 When x= -3

Mathematics
1 answer:
saul85 [17]4 years ago
6 0

Step-by-step explanation:

10x² - 5x + 10

x = -3

10(-3)² -5(-3) + 10

= (10×9) + 15 + 10

= 90 + 15 + 10

= 115

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Write an algebraic expression for the sum of 3 coins and c coins.<br> Oct 3
Basile [38]

Answer:

3 + c

Step-by-step explanation:

You need to have the sum of 3 coins and 'c' coins. This means that you have to add 3 and c. You don't know what c is, so you write the sum as:

3 + c

6 0
4 years ago
A 10-inch sunflower is planted in a garden and the height of the sunflower increases exponentially. The height of the sunflower
Misha Larkins [42]

Answer:

5-day growth factor is 27.027-inch

Step-by-step explanation:

Given;

the initial height of the sunflower = 10-inch

the rate at which the height increases = 22%

time of growth = 5 days

To calculate 5-days growth factor, we apply the formula below, since it grows exponentially;

=10-inch [1+\frac{22}{100}] ^5\\\\= 10-inch(2.7027)\\\\= 27.027-inch

Therefore, 5 day growth factor is 27.027-inch

8 0
3 years ago
6. As part of their employee benefits, all workers at Light and Power Electric Company
Semenov [28]

Answer:

  $1769.06

Step-by-step explanation:

The sum of Mia's three highest salaries is ...

  $92,000 +94,800 +96,250 = $283,050

so the average is ...

  $283,050/3 = $94,350

Her pension is then ...

  0.01875 × $94,350 = $1769.06

_____

<em>Additional comment</em>

This is equivalent to the total of those salaries, divided by 160.

  T/3 × 0.01875 = T × (0.01875/3) = T × 0.00625 = T/160

Sometimes, there are simpler ways to calculate things like this.

8 0
3 years ago
Srry again but what is this <br> -1/3+-5/8
Alenkasestr [34]

Answer:

-23/24

Step-by-step explanation:

get common denominator =24

-8/24 + -15/24

-8 + -15 = -23

keep bottom

-23/24

7 0
3 years ago
Read 2 more answers
Chosse the replacement for x that makes the equation a true statement.
natita [175]

Answer:

x=-8

Step-by-step explanation:

16x+35 = -93

subtract 35 from each side

16x = -93 -35

16x = -128

divide each side by 16

x = -128/16

x=-8


8 0
3 years ago
Read 2 more answers
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