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3 years ago

If 18 is subtracted from twice the square of an integer, the

Mathematics

1 answer:

kherson [118]3 years ago

6 0

Answer:

-3/2

Step-by-step explanation:

Let x = the integer:

2x^2 - 18 = 9x

2x^2 - 9x - 18 = 0

Now either factor that or use the quadratic formula if you're lazy like me.

x = -3/2 and 6, so x must be 6 because it has to be an integer.

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Solve for y, z, x or t:

Rus_ich [418]

Answer:

Step-by-step explanation:

$if~it ~is ~y+\frac{y}{a} =b\\then~\frac{ay+y}{a} =b\\ay+y=ab\\ y(a+1)=ab\\ y=\frac{ab}{a+1} \\$

$z-a=\frac{z}{b} \\z-\frac{z}{b} =a\\ \frac{bz-z}{b} =a\\bz-z=ab\\z(b-1)=ab\\z=\frac{ab}{b-1}$

5 0

3 years ago

Why was Andrew Jackson important during the War of 1812? Please help

Anuta_ua [19.1K]

Answer:

led his troops through enemy territory to victory in serval battles

8 0

3 years ago

Slope=-5/2, y-intercept =-1

statuscvo [17]

Answer:

y= -5/2x -1

Step-by-step explanation:

7 0

3 years ago

I need help its urgent ASAP will mark you the brainliest

kherson [118]

9514 1404 393

Answer:

BE = 266 2/3

PE = 233 1/3

Step-by-step explanation:

Part A: The figure has 3 triangles, all similar. In order of shortest-to-longest side lengths, they are ...

ΔBPE ~ ΔBCG ~ ΔGRE

Part B: They can be declared similar by the AA postulate. For BPE and BCG, the angles at B are vertical angles, so are congruent. The angles at C and G are alternate interior angles, so are congruent.

For triangles BPE and GRE, angle E is congruent to itself, The angles at R and P are corresponding angles, so are congruent.

(Remember, GRPC is a parallelogram, so any line in the figure is a transversal crossing parallel lines.)

Part C:

From parts A and B, we know ΔBPE ~ ΔBCG. Corresponding sides are proportional:

BP/BC = BE/BG = PE/CG

200/300 = BE/400 = PE/350

BE = (400)(2/3) = 266 2/3

PE = (350)(2/3) = 233 1/3

5 0

3 years ago

jack spends 1 1/3 as long on his homework as Jill. Last week Jill sent 5 1/2 hours doing homework. How long did jack spenkd doin

katen-ka-za [31]

Jill = x
Jack = x + 1 1/3
X = 5 1/2

Solving Equations
5 1/2 +1 1/3
=6 5/6

Answer = 6 5/6 hours

8 0

4 years ago