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
slamgirl [31]
3 years ago
13

HELP HELP HELP HELPshow the steps too. I'll give BRAINLIEST!​

Mathematics
1 answer:
natali 33 [55]3 years ago
3 0
Move constant to the right-hand side and change its sign

2x^2 + 8 = -2 + 7
-2 + 7 = 5

Divide both sides of the equation by

x^2 + 4x = 5/2

Add (4/2^2) to both sides of the equation

x^2 + 4x + (4/2)^2 = 5/2 + (4/2)^2

factor the expression

(x + 4/2)^2 = 13/2

reduce the fraction by 2

(x + 2)^2 = 13/2

now solve equation for x




You might be interested in
A diner has a breakfast special. A customer can chose scrambled, fried, or poached eggs. The breakfast comes with a side of baco
Kryger [21]
3x3x3=27

So, there are 27 combinations.
3 0
3 years ago
Read 2 more answers
A sailor is 30m above the water in the crow's nest on a sailboat. The sailor encounters an orca surface at an angle of depressio
Natali [406]

Given :

A sailor is 30 m above the water in the crow's nest on a sailboat.

The sailor encounters an orca surface at an angle of depression of 15 degrees.

The crows nest is 20 m horizontally from the bow (front) of the boat.

To Find :

How far in front of the boat is the orca.

Solution :

Let, distance of boat front from the crow's nest is x.

So,

\dfrac{30}{20+x}=tan \ 15^{\circ}\\\\x=\dfrac{30}{tan \ 15^{\circ}}-20\\\\x=111.94-20\\\\x=91.94\ m

Hence, this is the required solution.

4 0
3 years ago
I need a answer to equation -2x=8
valkas [14]

Answer:

x = -4

Step-by-step explanation:

Divide both sides by -2.

x= - 8/2

Simplify - 8/2 to -4.

4 0
3 years ago
Could someone please help me with this?
allsm [11]

Answer:

21.5 mm^2

Step-by-step explanation:

First find the area of the square

A = s^2 = 10^2 =100

Then find the area of the circle

d = 10 so r = d/2 = 10/2 =5

A = pi r^2

A = 3.14 (5)^2 =78.5

The difference is the shaded region

100-78.5 =21.5

7 0
3 years ago
Read 2 more answers
Rewrite the following the form log (c) log (20) - log (5)
Dmitrij [34]

Answer:log (20/5)

Step-by-step explanation:

When subtracting logs you divide the numbers after the log

4 0
3 years ago
Other questions:
  • i am trying to put a fence around a garden that is in the shape of a regular hexagon. i know that the side of the garden is 6ft
    13·1 answer
  • For each equation, determine whether it represents a direct variation, an inverse variation, or neither. Find the constant of va
    12·1 answer
  • 7,10) and (7,20). Slope or no slope
    6·2 answers
  • I need help plssss ??! Anybody ?
    8·1 answer
  • A pitchers arm rotates at a speed of 7 degrees per millisecond
    6·1 answer
  • Find d2y/dx2 in terms of x and y if (x^2)-(y^2)=16.
    5·1 answer
  • Given that f(x) = x^2+ 11x + 30 and g(x) = x + 6, find
    5·1 answer
  • Sandy picked 9 pounds of tomatoes. She wants to share the tomatoes equally among 4 of her neighbors. How many pounds of tomatoes
    14·1 answer
  • Please helppppppppppppppppppppp
    6·2 answers
  • What expressions are equivalent to 7^3 * 7^x
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!