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
garri49 [273]
3 years ago
12

(5x+3)(7x-7) how do find x

Mathematics
1 answer:
Delvig [45]3 years ago
6 0

We can use the FOIL method to solve.

(5x + 3)(7x - 7)

(5x * 7x) + (5x * -7) + (3 * 7x) + (3 * -7)

35x - 35x + 21x - 21

0 + 0

0

Best of Luck!

You might be interested in
Math help please, thank you!
CaHeK987 [17]
The answer to the first question of the attached document is option 1. We obtain the answer subtracting the term n from the series with the term n-1.For example:
 -3 - (- 5) = 2
 -1 - (- 3) = 2
  1 - (- 1) = 2
 So you can see that the common difference is the 2.

 The answer to the second question is option 3:
 y = | x + 7 |
 We can confirm it by substituting values in the equation.
 For example:
 if we do y = 0 then x = -7
 if we do x = 0 then y = 7.
 As corresponds in the graph shown.
 Remember also that as a general rule yes to the equationy = | x | whose vertex is in the point (0,0) we add a positive real number "a" of form y = | x + a | then the graph of y = | x | will move "to" units in the negative direction of x.

 The answer to the third question is option 4.
 The quotient of x and "and" is constant.
 k = y / x
 Rewriting:
 y = kx
 You can see that it corresponds to the equation of a line that passes through the origin, this means that and is proportional to x and both vary directly
3 0
3 years ago
Help plzzzzzzzzzzzzzz ​
Anna11 [10]

Answer:

71

so there's a right angle and 19° i added them and got 109°. and remember a triangle is 180° so i did 180-109

4 0
3 years ago
Of the 100 entries in a costume contest, 39 entrants were dressed as heroes and 45 entrants were wearing a mask. If 21 entrants
ehidna [41]

Correct question with correct options has been attached

Answer:

37

Step-by-step explanation:

Let C represent those dressed as heroes and let B represent those wearing mask

Thus;

n(C) = 39

n(D) = 45

We are told that 21 entrants were dressed as heroes wearing a mask.

Thus; n(C n D) = 21

We are also told that there were a total of 100 entries.

Thus, n(T) = 100

Now, number of entrants neither dressed as heroes nor wearing a mask is given by;

n(T) - n(C u D)

n(C u D) = n(C) + n(D) - n(C n D)

n(C u D) = 39 + 45 - 21

n(C u D) = 63

Thus;number of entrants neither dressed as heroes nor wearing a mask is: 100 - 63 = 37

3 0
3 years ago
186 = 6 (3n + 7) answer for N
Vesnalui [34]
N=8 is the correct answer
7 0
3 years ago
Read 2 more answers
I NEED HELP FAST PLZZZZ WITH THIS EDULASTIC
Montano1993 [528]

Answer:

what blocks i would help but what blocks

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • 4(x+1)=16 HELP MEEEEEE
    12·2 answers
  • The vertices of a triangle are A(4, 1), B(9, 1), C(2, 5). What is the area of this triangle.
    7·2 answers
  • HELP PLEASE!
    6·1 answer
  • What is the volume of a cube with a length of 4/5 m?
    12·1 answer
  • Desiree starts a savings account with $125. Every month she deposits $53.50
    12·1 answer
  • Completely factor the polynomial: 9x+ay+9y+ax
    14·1 answer
  • If the radius of a coin is 20cm ,find its surface area.​
    15·1 answer
  • Find the value of X. Show your work.<br><br> Congruent triangle
    13·2 answers
  • Please help me with this question please
    5·2 answers
  • (8*10^(3))(4*10^(8))
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!