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
hjlf
2 years ago
9

If z = 2, find the value of: a. 6z2–2z+5 b. 64–5z

Mathematics
1 answer:
Ludmilka [50]2 years ago
4 0

Answer:

25 and 54

Step-by-step explanation:

(a)

6z² - 2z + 5 ← substitute z = 2

= 6(2)² - 2(2) + 5

= 6(4) - 4 + 5

= 24 - 4 + 5

= 20 + 5

= 25

(b)

64 - 5z ← substitute z = 2

= 64 - 5(2)

= 64 - 10

= 54

You might be interested in
<img src="https://tex.z-dn.net/?f=%20%5Csqrt%5B3%5D%7B4a%20%7B%7D%5E%7B6%7D%20%7D%20%20%5C%3A%20%20%2B%20%20%5Cfrac%7B2%7D%7Ba%2
Mumz [18]

I'm not sure about my answer,but still writing it...

= ³√4a⁶ - 2/a-³ - (a²)3/2

= a² × ³√4 - 2a³ - 3a²/2

Cann't think that it could be futher more evaluted

8 0
3 years ago
turn the improper fraction into a mixed number c)45/7 d)20/3 turn these numbers in to a mixed number please help
MariettaO [177]
A mixed number looks like this: a(b/c)
The improper fraction currently looks like this: (ab/c)
Round the numerator to something you can divide by the denominator. For example, 45 would be rounded to 42. 42/7=6. 6 would be the whole number.
45-42=3. 3/7 is the new fraction.
So the answer for c is 6(3/7)
Do you know how to do d?
7 0
3 years ago
Alex and Jose are working on some math problems.
Volgvan

Answer:

Alex is right so the problem is solved

4 0
3 years ago
D’Andra has a dentist appointment in 5 weeks. There are 7 days in a week. How many days are in 5 weeks?
Lisa [10]

Answer:

A. 35

Step-by-step explanation:

Each week has 7 days, and we have 5 weeks.

Week 1 has 7 days.

Week 2 has 7 days.

Week 3 has 7 days.

Week 4 has 7 days.

Week 5 has 7 days.

We can add all these together to get the total number of days: 7 + 7 + 7 + 7 + 7 = 7 * 5 = 35.

Thus, the answer is A.

Hope this helps!

8 0
3 years ago
Read 2 more answers
Solve the equation 12x-14=4x+10​
ziro4ka [17]

Answer:

x=3

Step-by-step explanation:

12x-14=4x+10​

Subtract 4x from each side

12x-4x-14=4x-4x+10​

8x - 14 = 10

Add 14 to each side

8x - 14+14 = 10+14

8x = 24

Divide each side by 8

8x/8 = 24/8

x = 3

3 0
2 years ago
Read 2 more answers
Other questions:
  • Which axiom would justify the following conclusion?
    9·2 answers
  • What kind of angle is each internal angle of a Square
    6·2 answers
  • Susan and John are buying cold drinks for a neighborhood picnic each person is expected to bring one can of soda Susan says if y
    14·1 answer
  • 7. Select all the properties that can be
    5·1 answer
  • The quadratic function f(x)=-16x^2+90 models the height of a baseball in feet after x seconds. How long is the baseball in the a
    10·1 answer
  • Find the surface area of the figure below.
    6·1 answer
  • PLEASE HELP ME!!!Omar is constructing a square inscribed in a circle. He begins by constructing a circle with a center O and wit
    8·1 answer
  • Hi please help im honestly so tired and I don't have the time to constantly read this so I can get it
    13·2 answers
  • You are building a ramp that must cover a horizontal distance of exactly 17 feet. The angle of the ramp from the ground is 24°.
    11·1 answer
  • 8500 dollars is placed in an account with an annual interest rate of 7%. To the nearest year, how long will it take for the acco
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!