1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Romashka [77]
2 years ago
12

Evaluate (will give brainliest)

Mathematics
2 answers:
Natalka [10]2 years ago
7 0

Answer:

Step-by-step explanation:

1. X/2 when x = 1/2

Putting value of x in the equation

1/2 /2 = 0.25

2. 2x2 - 8 when x = 3

2(3)2 - 8

= 2(9) - 8

= 18 - 8 = 10

3. 4(x - 7)3 + 5 when x = 9

4 (x3 - 21x2 + 147x - 343) + 5

Putting value of x

4((9)3 - 21(9)2 + 147(9) - 343) + 5

4(729 - 1701 + 1323 - 343) + 5

4(8) + 5

= 32 + 5 = 37

katrin2010 [14]2 years ago
6 0

Answer:

1. 0.25

2. 208

3. 517

Step-by-step explanation:

Number 1.

0.5/2

= 0.25

number 2.  

2(3)^3-8

6^3 - 8

216-8

= 208

Number 3.

4(9-7)^3 +5

4(2)^3+5

8^3+5

= 517

You might be interested in
FOR 15 POINTS Determine whether each given value of h makes the inequality 4h + 13 ≤ −7 true. Select Yes or No for each value.
Norma-Jean [14]

Answer:

Yes, no, yes

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Rita gets paid $16 per hour for the first 8 hours she works each day. She earns 1 1 2 times her hourly pay rate for time she wor
omeli [17]
<h3>The total money earned by Rita on Monday   = $158</h3>

Step-by-step explanation:

The rate by which  Rita is paid first 8 hours  = $16

The next per hour rate after 8 hours = 1\frac{1}{2}    = 1.5 times the usual rate.

Now, 1.5 times $16 = 1.5 x 1 6 =  $24

So, for each hour worked after 8th hour, Rita is paid $24 per hour.

Now, the intervals she has worked are:

(a) from 8:15  to 12: 45 pm

So, the number of hours worked  =  45 minutes + 45 minutes  + 3 hours  

= 4 hours 30 minutes  .... (1)   (as 60 minutes = 1 hour)

(b) break of 45 minutes after 12: 45  = 12: 45 + 45 minutes  

= 12 hour 90 minutes  = 1 :  30 P M

So, she started working at 1: 30 and worked till 6: 15

So, the number of hours worked  =  30 minutes + 15 minutes  +4 hours  

= 4 hours 45 minutes  .... (2)  

So, by adding (1) and (2) the total hours worked by Rita  

= 4 hours 30 minutes + 4 hours 45 minutes    

= 8 hours  75 minutes  = 9 hours 15 minutes

9 hours  15 minutes   = ( 8 +  1 .25 )     ( 15 minutes = 0.25 of an hour)

So, the payment is ( 8 x (16) +  1.25 (24) )  

= 128 +  30  = 158

Hence, the total money earned by Rita  = $158

6 0
3 years ago
How many triangles can be constructed with angles measuring 60 degrees 60 degrees and 40 degrees
erma4kov [3.2K]
None, a triangle need to have angles measuring 180 degrees , its only possible if the triangle has three angles equaling 60
8 0
3 years ago
Read 2 more answers
A spheres radius is multiplied by 2. How is it’s surface area affected
dexar [7]

Answer:

The surface area is multiplied by 3.

Step-by-step explanation:

If r is the radius of a sphere its surface area = 4(pi)r^2. If the radius is doubled then its surface area = 4(pi)(2r)^2 = 4*4(pi)r^2. So the surface area becomes 4-fold or the increase in surface area is 300%.

3 0
3 years ago
HELP ASAP<br> G = a(4 – d)
NemiM [27]

Answer:

g/-d+4

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • 5 over 9p equals - 10 what is p
    15·1 answer
  • When any two lines intersect, four angles are formed. If the intersection is perpendicular, then each angle is 90°
    8·1 answer
  • Find the slope of the line between the points (1, 4) and (-1,6)
    13·1 answer
  • NEED HELP. 25 points
    11·1 answer
  • Select 3 of the below equations that represent the line that has a slope of -2 and a y-intercept of 5
    13·1 answer
  • 23 mm<br>26 mm<br>52 mm<br>Write appropriate units with your answer​
    7·1 answer
  • If a designer sold 2,000 units of a dress with total sales of $190,000, what was the average price of the garment?
    15·1 answer
  • Subject:Mathematics ​
    8·2 answers
  • Help Please Asapppppp​
    7·1 answer
  • Solve the system of equations below using the substitution method. x = y + 7 / 2 4x − 2y = 8
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!