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2 years ago

7

2x + 5 equals 3x squared + 2 x - 7

2 answers:

iris [78.8K]2 years ago

5 0

X should equal 2 and -2 (if it is just the x squared and not 3x)

zlopas [31]2 years ago

4 0

:))

*Brainliest Please ♡´･ᴗ･`♡

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HELP ASAP!right answer I’ll give you a crown

faltersainse [42]

Answer:

$y=-\frac{3}{2}x+1$

Step-by-step explanation:

Slope-intercept form means

$y=mx+c$

where m is given its the slope which is $-\frac{3}{2}$ and we have the coordinates x and y which is (4, -5) and we need to find the value of c which is the y-intercept so we insert all these values into the equation so ,

$y=mx+c$

$-5 = -\frac{3}{2}(4)+c$

$-5=-6+c$

$c=1$

now we know the value of slope which is given $-\frac{3}{2}$ and we found the value of which is 1 so we put these values into our original slope-intercept form equation

$y=mx+c\\\\y=-\frac{3}{2}x+1$

4 0

2 years ago

A pile of earth removed from an excavation is a cone measuring 6ft high and 30ft across its base. How many trips will it take to

nignag [31]

Answer: 14

Step-by-step explanation:

Given

Excavation cone measures

height $h=6\ ft$

Diameter $d=30\ ft$

Truck can dump $125\ ft^3$ at a time

The volume of a cone is

$V=\dfrac{1}{3}\pi r^2h$

Putting values

$\Rightarrow V=\dfrac{1}{3}\times \pi\times 15^2\times 6\\\Rightarrow V=1413.9\approx 1414\ ft^3$

No of trips(N) required to accumulate this much volume is given by

$\Rightarrow N=\dfrac{1414}{125}=13.3\approx 14$

Therefore, 14 trips are necessary to accumulate a cone of volume $1414\ ft^3$

8 0

2 years ago

The formula c=√(a^2+4b^2 ) Solve the equation for b. That means get “b” all by itself on one side of the equation. Show your wor

fiasKO [112]

Answer:

$b^{2} =\frac{c^{2}-a^{2} }{4}$

Step-by-step explanation:

I believe this is the correct answer. In order to check that my equations are correct I put in some dummy numbers.

a= 2

b=4

c= $2\sqrt{17}$

7 0

2 years ago

Find the perimeter of the quadrant. Use 3.143.14 as an approximation for \piπ. <br><br> <br><br>

solniwko [45]

Answer: 19.625 cm (Formula is 2πr)

Steps: 1.) 3.14 * 12.5 = 39.25

2.) 39.25 * 2 = 78.5

3.) 78.5 / 4 = 19.625 (using the 4 because the area is a fourth of a whole circle)

6 0

2 years ago

Which of the following is the correct ordered pair when (-3,1) is rotated 270 degrees clockwise?

blsea [12.9K]

Answer:

(-1,-3)

Step-by-step explanation:

3 0

2 years ago