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Furkat [3]
3 years ago
11

What’s the product of the 2 binomials below? (4a+5b)(4a-5b)

Mathematics
2 answers:
Mila [183]3 years ago
6 0

Answer:

16a*16a -25b

Step-by-step explanation:


lukranit [14]3 years ago
4 0

For this case we must solve the product of two binomials, applying the distributive property, which by definition establishes:

(a + b) (c + d) = ac + ad + bc + bd

So, if we have: (4a + 5b) (4a-5b), your product is given by:

Considering that - * + = -

(4a) (4a) - (4a) (5b) + (5b) (4a) - (5b) (5b) =\\16a ^ 2-20ab + 20ab-25b ^ 2 =\\16a ^ 2-25b ^ 2

Answer:

The product of(4a + 5b) (4a-5b)\ is\ 16a ^ 2-25b ^ 2


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The equation of a line is y=-2x+1. What is the equation of the line that is parallel to the first line and passes through (2,2)?
Murrr4er [49]

Answer:

The equation in slope-intercept form is y=-2x+6.

The equation in standard form is 2x+y=6.

The equation in point-slope form is y-2=-2(x-2).

Step-by-step explanation:

The slope-intercept form of a line is y=mx+b where m is the slope and b is the y-intercept.

Parallel lines will have the same slope and different y-intercept.

Anyways the slope of y=-2x+1 is -2.

So the equation of our line we are looking for is -2.

So we know our equation is in the form y=-2x+b.

We must inf b using y=-2x+b with (x,y)=(2,2).

y=-2x  +b  with (x,y)=(2,2)

2=-2(2)+b

2=-4+b

Add 4 on both sides:

2+4=b

Simplify:

6=b

The equation is y=-2x+6.

Now it didn't say what form it wanted.

There are some forms I can give you like standard and point-slope form.

There is also general form but it is not too much different from standard form.

Standard form is ax+by=c where a,b, and c are integers if possible.

Point-slope form is y-y1=m(x-x1) where (x1,y1) is a point on the line and m is the slope.

So let's go for standard form (ax+by=c) first:

y=-2x+6

add 2x on both sides:

2x+y=6

This is standard form because it is in the form

ax+by=c.

Ok we know point (2,2) is on our line and we also know we have slope,m, is -2.

Point-slope form is

y-y1=m(x-x1)

y-2=-2(x-2)

8 0
3 years ago
20 pts!! ANSWER SOON PLEASE!! WILL GIVE BRAINLIEST!!Would you rather paint 3/4 of a circle or a circular ring? Using area, expla
inysia [295]

Answer:

Both/Neither.

Step-by-step explanation:

For the circle, the area is π(6)^2= 36π. 3/4 of that is 27π. Now, for the ring, area of outer circle is 36π. The area of inner circle is 9π. So, area of ring is 27π. That means, both will take the same amount of paint.

3 0
3 years ago
Mr wong predicted that he would sell 45 automobiles , he actually sold 48
dolphi86 [110]

Answer:

well done mr wong lol

Step-by-step explanation:

what's the question is it the percent he beat his prediction?

if it is then its 48 divided by 45 times 100

this equals 106.67%

then take this away from his prediction percent originally which is 100%

106.67-100= 6.67%

7 0
1 year ago
What is the best estimate for$21.15 $19.89 $6.52
Maksim231197 [3]

first, I would round down/up 21.25 to just 21, 19.89 to 20, and 6.52 to 7. then add up 21+20=41, 41+7=48 so 48 is the answer

5 0
3 years ago
Subtract 1/6a+3 from 1/3a−5<br> PLZ HELP ASAP
lukranit [14]

Answer:

1/3a - 5 - (1/6a + 3) =

1/3a - 5 - 1/6a - 3 =

1/3a - 1/6a - 5 - 3 =

2/6a - 1/6a - 8 =

1/6a - 8 <===

Step-by-step explanation:

5 0
3 years ago
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