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
jonny [76]
3 years ago
9

Tamara says she used the GCF to factor the expression 21x + 56xy as 7(3x + 8xy). Is she correct? Explain.

Mathematics
1 answer:
cestrela7 [59]3 years ago
6 0

Answer:

Tamara  incorrectly factored the whole expression.

Step-by-step explanation:

Note that

  • 21x=3·7·x;
  • 56xy=2·2·2·7·x·y.

Mark in bold all common factors, then GCF(21x,56xy)=7·x=7x.

Thus,

21x+56xy=7x(3+8y).

Hence, Tamara correctly found the GCF of numbers 21 and 56, but incorrectly factored the whole expression.

You might be interested in
A circle has a circumference of 7.85 yards what is the diameter of the well
Vsevolod [243]
2.5 yds
C=2πr
d=2r
Solving ford
d=C
π=7.85
π≈2.
4 0
3 years ago
Solve the equation. Check the solution -4/x+1 = -1/x+5
boyakko [2]
The answer to this equation is x= -19/3
4 0
3 years ago
Read 2 more answers
Fernando bought a jacket for 185 and sold it for 1 1/2 what he paid. Marisol spent 1/5 as much as Fernando on the same jacket bu
avanturin [10]

Answer:

Marisol made $138.75 on the sale of the jacket

Step-by-step explanation:

First we are told that Fernando bought a jacket for $185, and sold it for 1 1/12 what he paid.

Therefore, 1 1/2 of 185;

= 1.5 × 185 = $277.5

Therefore, Fernando sold the Jacket for $277.5

Next, we are told that:

Marisol spent 1/5 as much as Fernando on the same jacket

This means that Marisol spent 1/5 of $185 on the jacket

= 1/5 × 185 = 0.2 × 185 = $37

Therefore, Marisol spent $37 to buy the same jacket

Next, Marisol sold the jacket for 1/2 as much as Fernando. Since Fernando sold the Jacket for $277.5, Marisol sold the jacket for 1/2 of 277.5, and this is calculated as:

1/2 of 277.5 = 0.5 × 277.5 = 138.75

Therefore, Marisol made $138.75 on the sale of the jacket.

6 0
3 years ago
The vertex of this parabola is at (-5, -2). When the x-value is -4, the
dusya [7]
I am pretty sure that it's
A. 1
3 0
3 years ago
Read 2 more answers
Look at this linear equation. 3x + 5y = 30 Which of the following equations can be used to solve for y in the linear equation ab
-BARSIC- [3]
Y=-
\frac{3}{5} x + 6


5 0
2 years ago
Read 2 more answers
Other questions:
  • What is the standard deviation of the following data set rounded to the nearest tenth? 60, 40, 35, 45, 39
    14·1 answer
  • Thor and Zeus strike with their hammers. The higher they raise their hammers before they strike, the louder the sound of the str
    11·1 answer
  • Alexis washes 10 1/2 windows in 3/4 hours. At this rate, how many windows can she wash in one hour?
    6·1 answer
  • What triangle does it form ?
    10·2 answers
  • In 1983, a can of house paint cost $16.35. In 2000, a can of house paint cost $28.94, and in 2005, a can of house paint cost $32
    15·2 answers
  • Which is equivalent to 10/12?options: 10/18 5/6 3/12 9/11
    11·1 answer
  • What percentage of 25kg is 15kg​
    12·1 answer
  • HELPPP ME PLEASE IVE BEEN 2 hours IN THIS QUESTIONN
    10·1 answer
  • Can someone help me fill this out
    8·1 answer
  • Solve the following proportion for x 3/8 =x/13
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!