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
Akimi4 [234]
3 years ago
7

Help please thank you!

Mathematics
2 answers:
ozzi3 years ago
8 0
4x^2 + 16x-2= 5x
Minus 16x over

4x2-2= -11x

Add 11x over

4x^2 +11x -2

Use quadratic formula x= 2.9
I’m not sure here. I tried my best. Hope it helps!
Ede4ka [16]3 years ago
6 0

Answer:

x_1=-2.9\\x_2=0.2

Step-by-step explanation:

The first step is to move the 5x to the left side of the equation and then add the like terms:

4x^2+16x-2=5x\\\\4x^2+16x-2-5x=0\\\\4x^2+11x-2=0

Now we can apply the Quadratic formula. This is:

x=\frac{-b\±\sqrt{b^2-4ac}}{2a}

In this case we can identify that:

a=4\\b=11\\c=-2

Finally, we must substitute these values into the Quadratic formula. Then we get:

x=\frac{-11\±\sqrt{(11)^2-4(4)(-2)}}{2(4)}

x_1=-2.9\\x_2=0.2

You might be interested in
Tennis balls are sold in cylindrical cans with the balls stacked one on top of the other. A tennis ball has a diameter of 6.7 cm
andrey2020 [161]

Answer:

629.92 cm^3

Step-by-step explanation:

The minimum volume of the can that can hold 4 tennis balls must have at least the same volume as 4 tennis balls.

The volume of one tennis ball, V = \frac{4}{3}\pi  r^3

where r = radius of the tennis ball

The diameter of a ball = 6.7 cm

Its radius will be = 6.7 / 2 = 3.35 cm

Volume, V, will be:

V = \frac{4}{3}\pi  (3.35)^3

V = 157.48cm^3

Hence, the volume of 4 balls will be:

4 * V = 4 * 157.48 = 629.92 cm^3

The minimum volume that the cylindrical can has to have is 629.92 cm^3.

6 0
3 years ago
What is the value of x in this equation<br> [x+17]=20x
Digiron [165]

Answer:

0.90=X or 0.89=X

If it's not right, then i'm sorry :)

3 0
3 years ago
A study of a population of 600 turtles revealed that 6 out of 90 turtles in the
KATRIN_1 [288]
560 turtles don’t have spots on their backs
8 0
3 years ago
(2^8 x 3^−5 x 6^0)−2 x 3 to the power of negative 2 over 2 to the power of 3, whole to the power of 4 x 2^28
Veronika [31]

(2^8\cdot3^{-5}\cdot6^0)^{-2}\cdot\left(\dfrac{3^{-2}}{2^3}\right)^4\cdot2^{28}\\\\=(2^8)^{-2}\cdot(3^{-5})^{-2}\cdot1^{-2}\cdot\dfrac{(3^{-2})^4}{(2^3)^4}\cdot2^{28}\\\\=2^{-16}\cdot3^{10}\cdot\dfrac{3^{-8}}{2^{12}}\cdot2^{28}\\\\=2^{-16}\cdot2^{28}\cdot2^{-12}\cdot3^{10}\cdot3^{-8}\\\\=2^{-16+28+(-12)}\cdot3^{10+(-8)}\\\\=2^0\cdot3^2=1\cdot9=\boxed{9}\\\\Used:\\\\(a\cdot b)^n=a^n\cdot b^n\\\\(a^n)^m=a^{n\cdot m}\\\\a^n\cdot a^m=a^{n+m}\\\\a^{-n}=\dfrac{1}{a^n}

4 0
3 years ago
Read 2 more answers
The tangent of an angle is 3.4. what is the measure of the angle to the nearest tenth?
Amiraneli [1.4K]

To answer this question, you first need to know what SohCahToa is.

S- opposite over hypotenuse

C- adjacent over hypotenuse

T- opposite over adjacent

In this situation, they have made it easier for you as they have given you the quotient of the opposite and adjacent sides (3.4) . Now in order to find an angle, you take the inverse of your expression. So instead of just Tan, you would plug in Tan^-1. So plug it in:

Tan^-1 (3.4)

Answer is 73.6 degrees.

3 0
3 years ago
Other questions:
  • Find the third quartile. {2, 5 ,6, 7, 15, 16, 17}
    7·1 answer
  • 10. Which number sentence shows the<br> number of marbles that are either<br> red or blue?
    15·1 answer
  • __________ interest is paid on the amount of the original deposit plus any interest the account has earned. A. Annual B. Simple
    15·2 answers
  • Question 7 Multiple Choice Worth 1 points)
    7·1 answer
  • A giraffe neck is approximately 1/3 of its height what fraction of the giraffe height is not the neck
    9·2 answers
  • Which estimate best describes the area under the curve in square
    14·1 answer
  • Liza gets paid $5.25 an hour to babysit her little cousins. Last weekend, she watched them for three hours on Friday, nine hours
    10·2 answers
  • Carl and Joseph are recycling newspapers for a school project. They have collected 600 pounds of newspaper, which they must sepa
    7·1 answer
  • If x &gt; 3, Which of these numbers could be a possible number for x?
    8·2 answers
  • 8.35 A shopper buys a $100 coat on sale for 20% off. An additional $5 is taken off the sale price by using a discount coupon. A
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!