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3 years ago

(Picture) MULTIPLYING MONOMIALS AND BINOMIALS

Mathematics

1 answer:

Contact [7]3 years ago

6 0

Answer:

Third and sixt option

Step-by-step explanation:

Applying the distributive property:

(b-2c)(-3b+c)=b(-3b)+b(c)-2c(-3b)-2c(c)

(b-2c)(-3b+c)=-3b^2+bc+6bc-2c^2

Adding like terms:

(b-2c)(-3b+c)=-3b^2+7bc-2c^2

The simplified product has 3 terms (first and second option are not true)

The simplified product has a degree of 2 (third option is true)

The simplified product, in standard form, has exactly 2 negative terms: -3b^2 and -2c^2 (sixth option is true)

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Can someone plz help? Only have a hour...I'll make crown the best and triple the points!!!

kykrilka [37]

Answer:

x= 3.57

Step-by-step explanation:

32 ( x + 2.5) = 114.24

32* x + 32* 2.5= 114.24

32x + 80= 114.24

-80 -80

32x= 114.24

/ 32 /32

x= 3.57

for the part that says convince me, we can use the eqution

/= divide

8 0

3 years ago

HELP P PICTURE IS SHOWN

Zepler [3.9K]

X would be 6 since
35 ÷ 5= 7
then you'd divide
42 ÷ 7 and get 6

3 0

3 years ago

Solve (algebraically by any method) 3x to the 2 power +8x - 4= 0

Ratling [72]

3 x^{2} + 8x +(-4) = 0
x = -b + √ b² - 4ac
 2a
x = -8 + √ 8² - 4(3)(-4)
 2(3)
x = -8 + √64 - 48 
 6
x = -8 + √16
 6
x = -8 + 4 x = -8 - 4
 6 6
x = -4 x = -12
 6 6
x = -2 x = -2
 3

5 0

3 years ago

WHOEVER IS CORRECT GETS 55 POINTS!!! PLZ HELP FASTTTTT!!!!!!!martin throws a ball straight up in the air. the equation h(t)=-16t

weqwewe [10]

Given that Martin throws a ball straight up in the air.

The equation $h(t)=-16t^2+40t+5$ gives the height of the ball, in feet, t seconds after martin releases it.

We need to determine the time that it takes the ball to hit the ground.

Time taken:

To determine the time 't', let us equate h(t) = 0 in the equation $h(t)=-16t^2+40t+5$

Thus, we have;

$0=-16t^2+40t+5$

Switch sides, we get;

$-16 t^{2}+40 t+5=0$

Now, we shall solve the equation using the quadratic formula.

Thus, we have;

$t=\frac{-40 \pm \sqrt{40^{2}-4(-16) 5}}{2(-16)}$

Solving, we get,

$t=\frac{-40 \pm \sqrt{1600+320}}{-32}$

$t=\frac{-40 \pm \sqrt{1920}}{-32}$

$t=\frac{-40 \pm 8\sqrt{30}}{-32}$

$t=\frac{8(-5 \pm \sqrt{30})}{-32}$

Cancelling the common terms, we get,

$t=\frac{-5 \pm \sqrt{30}}{-4}$

Thus, the roots of the equation $t=\frac{-5 + \sqrt{30}}{-4}$ and $t=\frac{-5 - \sqrt{30}}{-4}$

Simplifying the roots, we get,

$t=\frac{-5 +5.477}{-4}$ and $t=\frac{-5 -5.477}{-4}$

$t=-0.119$ and $t=2.619$

Since, t cannot take negative values, then $t=2.619$

Hence, It takes 2.6 seconds for the ball to hit the ground.

8 0

3 years ago

A triangle has sides with lengths of 4 yards, 10 yards, and 11 yards. Is it a right triangle?

vodka [1.7K]

Answer:

Step-by-step explanation:

for a triangle to be a right triangle, the sum of the square of its legs must equal the square of its hypotenuse

a² + b² = c²

in this problem, 4² + 10² ≠ 11²

16 + 100 ≠ 121

6 0

3 years ago