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
Triss [41]
3 years ago
7

Evaluate 4x2 +3 when x=5

Mathematics
2 answers:
luda_lava [24]3 years ago
8 0

Answer:

43

Step-by-step explanation:

4(5)2 +3

(20)2+3

40+3

43

Molodets [167]3 years ago
7 0

Answer:

103

Step-by-step explanation:

We substitute x with 5:

4(5)^2+3

Solve the exponent first:

5^2 = 25

<em>Note: We are using order of operations (consecutively)</em>

  1. <em>Parentheses </em>
  2. <em>Exponents</em>
  3. <em>Multiplication</em>
  4. <em>Division</em>
  5. <em>Addition </em>
  6. <em>Subtraction</em>

Multiply:

25 * 4 = 100

Add:

100 + 3 = 103

Our answer is 103

<em />

You might be interested in
What number comes next? 6, 9, 12, 15​
taurus [48]

Answer:

18

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Suppose the class sizes in high schools in a major public school district are normally distributed with an unknown population me
Blizzard [7]

Answer:

1.703

Step-by-step explanation:

The reason we try to find t score is because the sample size is below 30, meaning the sample size is small

Hence:

Step 1

We find the degree of freedom

The Degrees of freedom = Number of samples - 1

The random number of samples = 28

= 28 - 1

= 27

Step 2

Using a t score table or t score calculator, we can obtain the t score value for a 90% confidence interval and degree of freedom of 27

90% confidence interval =

10% significance level = 0.10 for two tails or 0.1/2 = 0.05 for one tail

Hence: t90 = 1.703

4 0
3 years ago
Kaci works at a bread store. She has 8 1/4 pounds of dough. She is making .75 pounds loaves. How many loaves will she be able to
ra1l [238]
Your answer would be 11 loaves of bread. If you need an exclamation let me know and I will talk you through it. Have a great day!
7 0
3 years ago
Read 2 more answers
Wrote and solve an equation to find the number.The difference of twice a number and 7 is 9​
andrew11 [14]

n - 7 = 9

Step-by-step explanation:

so basically just make up a random variable and place it for the "twice a number" then u sovle it as a 2 step equation

6 0
3 years ago
Does this table represent an exponential function x 1 2 3 4 y -1 -8 -27 -64
k0ka [10]

\bf \begin{array}{ccll}&#10;x&y\\&#10;\cline{1-2}&#10;1&\stackrel{-1^3}{-1}\\\\&#10;2&\stackrel{-2^3}{-8}\\\\&#10;3&\stackrel{-3^3}{-27}\\\\&#10;4&\stackrel{-4^3}{-64}\\\\&#10;x&-x^3&#10;\end{array}~\hspace{5em}\boxed{y=-x^3}~~\checkmark

4 0
3 years ago
Other questions:
  • Please Help Me How to do this..
    14·1 answer
  • What is the solution set for the equation (2x-1)(x+5)=0
    8·2 answers
  • What are the values of x and y?
    7·2 answers
  • I need help fast pleasee
    12·2 answers
  • A class of 28 students can complete 896 math problems in one day how many problems does each student complete
    7·1 answer
  • I’ll mark you brainliest pls
    11·1 answer
  • One hundred rats with mothers that were exposed to high levels of tobacco smoke during pregnancy were put through a simple maze.
    9·1 answer
  • Find the number of ways you can arrange the letters in the word parthum a 120 b 14,560 c 5040 d 4005
    10·1 answer
  • Anna and Henry are raking their yard. Anna has raked 5/12 of the yard and Henry has raked 4/9 of the yard. What fraction of the
    14·1 answer
  • what base could be written in the blank to make the exponential function model 15% decay ? y= (__1/2__) ^t\12
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!