Please can someone help me out? am getting different answers thanks

Answers

Answer 1

Answer: 2(2)^2 + 3(2)(-4) - 4(-4)^2 I get -80 as my answer

Related Questions

Prove that: (a2 - b2)3 + (b2-c2)3+ (c2-a2)3 = 3 (a+b) (b+c) (c+a) (a-b) (b-c) (c-a).
Find 12 1/2% of 96 men
Given a mean of 9 and a standard deviation of 2.8, what is the z-score of the value 11 rounded to the nearest tenth?–0.9 –0.7 0.9 0.7
I have SAT's tomorrow and need help with math... Antonina needs to have worked at least 90 volunteer hours to graduate. She has already volunteered with a housing organization over the summer for 52 hours. Antonina needs to tutor after school for 3 hours per week to complete the remainder of her volunteer hours. If w is the number of weeks that Antonina needs to tutor in order to complete her volunteer hours, which of the following inequalities best models the situation described above?
What is the Nth term of 0 3 8 15 24 35

What would my final balance be if i put R650 in the bank for 60 Months with an interest rate of 6%

Answers

60 months is 5 years
12 × 5 = 60

Interest = Principle amount × Rate × Time in years
= 650 × 0.06 × 5 (6% = $(6)/(100)$ = 0.06)
= R195

R650 + R195 = R845

A circle with a CENTER 0 has a diameter of 16 cm. Points m and n are placed on the circle so that m/_MON =270. find the length of the intercepted arc of MN use 3.14 for pia. 21.4
b. 28.3
c. 32.5
d. 37.7

Answers

ok so remember
if x=degrees then the measure of the arc is
x/360=arclegnth/circumference
(if you understna that the angle's fraction out of 1 whole=arc's fraction out of circumference, you can use that info to make your own formula)
so
find circumference
c=pid
c=3.14*16
c=50.24

so
270/360=x/50.24
3/4=x/50.24
multiply both sides by (4*50.24)
150.72=4x
divide both sides by 4
39.68
round
37.7

answer is D

The original price of a stereo was reduced by 40%. The sales price was then reduced by 25%. This price was then reduced by 35%. If a stereo is now sellingfor $234.00, what was the original price?

Answers

If it was reduced by 35% 234 is 65% of the reduced price. So you divide it by 65 and multiply by 100.
234/65 x 100 = 360
360 is the price that was reduced by 25 % so it's 75% of the reduced price. for this you do 360 / 75 x 100 = 480
480 is the price that was reduced by 40% so it is 60% of the original price. to find the original price you do 480/60 x 100 = $800

If the product of a number and -8 is subtracted from the number, the result is 7 more than the number. find the number. Use x for the number.x-(-8x)=

Answers

$x-(-8\cdot x)=x+7\n\nx-(-8x)=x+7\n\nx+8x=x+7\n\n9x=x+7\n\n9x-x=x+7-x\n\n8x=7\n\n8x:8=7:8\n\nx=(7)/(8)$

You have said that [ x - (-8x) = x + 7 ] .

Note that [ - (-8x) ] = 8x

So the equation may be written as [ x + 8x = x + 7 ] .

Add up the 'x's on the left side: 9x = x + 7

Subtract 'x' from each side: 8x = 7

Divide each side by 8 : x = 7/8

Solve.

−43x+16<79

please solve

Answers

-43x + 16 < 79

Subtract 16 from both sides,
-43x < 63

Divide -43 from both sides,
x < -63/43

Hope this helps!

-43x + 16 -16< 79 -16; -43x ÷ -43 < 63 ÷ -43; x > -1.47

What is the sum of 8 yards and 5 feet?

Answers

The sum is a mathematical operation by which we get the result for sum of 8 yards and 5 feet, 29 foot.

What are Units ?

To measure and compare various things we use one term which is known as a unit. When all of the measuring units are the same, comparison is simple. Depending on their intended usage, different units can be categorized.

For example, for length measurement we use units like:- Yard, Feet, inch, miles.

Given that,

we have to add two quantities, which have different units but dimension is same for both quantities,

L₁ = 8 yards

L₂ = 5 feet

It is known that,

1 yard = 3 feet

So, L₁ = 8 yards = 24 foot

L = L₁ + L₂

L = 24 + 5 foot = 29 foot

So, The sum is 29 foot

To know more about Units check:

brainly.com/question/30168372

#SPJ5

1 yd = 3 ft
8 • 3 = 24
8 yd = 24 ft

5 + 25 = 29 ft

Your answer is 29 ft