MATHEMATICS MIDDLE SCHOOL

Evaluate the expression, using the given value of the variable.4 – 2x + 5x when x = 4

A.
–24

B.
–18

C.
16

D.
28

Answers

Answer 1
Answer: 4-2x+5x=\ \ \ \ | grouping\ numbers\n\n4+3x\ \ \ \ | substitute\ x=4\n\n4+3*4=4+12=16\n\nAnswer\ is\ C.

Related Questions

Eight times a number increased by 9 is the same as 15 more than 7 times the number. Find the number. ​
There are two college entrance exams that are often taken by​ students, Exam A and Exam B. The composite score on Exam A is approximately normally distributed with mean 20.5 and standard deviation 4.9. The composite score on Exam B is approximately normally distributed with mean 1022 and standard deviation 214. Suppose you scored 27 on Exam A and 1209 on Exam B. Which exam did you score better​ on? Justify your reasoning using the normal model.
Estimate the sum of 502 and 47 by rounding both values to the nearest ten. What is the best estimate of the sum?
Ok so, one yard (36 inch) is equal to two elevenths of a rod. How many inches are in a rod???? Plz I need help!!!!!
How many pounds are in 60 kilograms

Bella serves pizza at her party. each pizza is cut into 6 equal slices. there are 13/6 pizzas left after three party is over. the slices are in 3 different pizza boxes and none of the boxes are full. what fraction of a whole pizza can be in each box?

Answers

After Bella's party, there are 13/6 pizzas left, which means that there are 13 slices left. None of the boxes are full, so you put 4/6 of a pizza in a box, 4/6 of a pizza in another box, and 5/6 of a pizza in the third box. Hope this helps!!
The correct answer is that there is thirteen slices of pizza hope this helps you

What fraction is less than 1/2

Answers

Answer:

1/3,1/4,and so on like increasing in number

Anything that is lesser than the numerator that is equal to 1/2.

For explame, If you have 2/4 that is equal to 1/2, you can subtract 2-1 and you’ll have 1. Then you have 1/4.

Use the discriminant to determine the number and type of solutions the equation has.x2 + 8x + 12 = 0
a. no real solution
b. one real solution
c. two rational solutions
d. two irrational solutions

Please help me :)

Answers

x^2 + 8x + 12 = 0\n \na=1 , b= 8, c= 12 \n \n \Delta =b^2-4ac = 8^2 -4\cdot1\cdot12= 64-48= 16\n \n\Delta > 0 \n \n Answer : \ C. \ \ two \ rational \ solutions
ax^2+bx+c=0\ \ \ \Rightarrow\ \ \ \Delta=b^2-4\cdot a\cdot c\n\n\Delta>0\ \ \ \Rightarrow\ \ \ two\ real\ solutions\n\Delta=0\ \ \ \Rightarrow\ \ \ one\ real\ solution\n\Delta<0\ \ \ \Rightarrow\ \ \ no\ solution\n---------------\nx^2+8x+12=0\ \ \ \ \Rightarrow\ \ \ \Delta=8^2-4\cdot 1\cdot12=64-48=16\n\n\Delta>0\ \ \ \ \Rightarrow\ \ \ two\ real\ solutions\ \ \ \Rightarrow\ \ \ Ans.\ C

How tall is a tower of 100 pennies

Answers

A stack of 100 pennies, one on top of the other, is 15.5 centimeters tall. 

a penny is 1.55 mm thick, so a stack of 
100 pennies would be 155 mm thick or 15.5 centimeters. 

This means that a stack of 100 pennies is 6.1 inches in height.

What is the factorization of : -2/18f + 2/42

Answers

-(2)/(18)f +(2)/(42) =\boxed{\bf{-2\left((1)/(9)f-(1)/(21)\right)}}

What would you do first to solve this problem? 7x4 [ (6+3) -4]

Answers

Answer:

do whats in the parenthesis first

Step-by-step explanation:

so like this

7x^4[(6+3)-4]

7x^4[9-4]

7x^4+5

If brainiest is earned its greatly appreciated

Answer:

33 or 63

Step-by-step explanation:

6 +3= 9

7 x 4 = 28

9 - 4 = 5

28 + 5 = 33

9- 4 = 5

5 + 4 = 9

7 x 9 = 63
Other Questions
Without using 10, show directly that (17.6-1)8 = 17.6-8
Find two consecutive whole numbers that square root 116 lies between
Find the midpoint of A and B where A has coordinates (2,7)and B has coordinates (6,3).
the product of a mixed number between 4 and 5 and a fraction between 0 and 1 is always less than 4 true or false