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anzhelika [568]
2 years ago
15

Solve 7x^2–20x = 3. ;

Mathematics
2 answers:
valentinak56 [21]2 years ago
7 0

Answer:

x = \frac{-1}{7} <em>or </em>x = 3<em />

sasho [114]2 years ago
3 0

Answer:

x=3, -1/7

Step-by-step explanation:

7x^2-20x-3=0

Factor.

(x-3)(7x+1)=0

x-3=0 ⇒ x=3

7x+1=0 ⇒7x=-1 ⇒x= -1/7

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Help me please ahhhhh
Cerrena [4.2K]
<h3>Answers:</h3>
  • ST = 23
  • RU = 8
  • SV = 5
  • SU = 10

====================================================

Explanation:

Focus on triangles SVT and UVT.

They are congruent triangles due to the fact that SV = VU and VT = VT. From there we can use the LL (leg leg) theorem for right triangles to prove them congruent.

Since the triangles are the same, just mirrored, this means ST = UT = 23.

-----------------------

Following similar reasoning as the previous section, we can prove triangle RVU = triangle RVS.

Therefore, RS = RU = 8

-----------------------

SV = VU = 5 because RT bisects SU.

Bisect means to cut in half. The two smaller pieces are equal.

-----------------------

SU = SV + VU = 5+5 = 10

Refer to the segment addition postulate.

3 0
2 years ago
Read 2 more answers
The volume of a cube is given by s9 and the total surface area of a cube is given by 632, where s is the side length of the cube
Mariana [72]

Answer:

Surface area of a cube = side * side * 6

632 = side * side * 6

side^2 = 632/6

side^2 = 105.3333333333

side = 10.2632028789

********************************************

For a 5 inch side

volume = 5 * 5 * 5

= 125 cubic inches

surface area = 5 * 5 * 6

surface area = 150 square inches

Step-by-step explanation:

3 0
3 years ago
Help exponents and scientific notation
USPshnik [31]
If you have a whole number move the number of exponents in 10 and move left. If you have a decimal, and the 10 is negative exponent, move to the write.
5 0
3 years ago
A. 132<br> B. 66<br> C. 28<br> D. 264
Kryger [21]
66
first multiply 6*8 = 48
then do 14-8=6/2=3
then multiply 3*6=18
then add 18+48 and
your answer would be 66
8 0
3 years ago
(-4) (?) = -12<br><br> What is the value of the (?)
Crazy boy [7]
? = 3

-12/-4 = 3
you can check your answer by plugging it into the variable
4 0
3 years ago
Read 2 more answers
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