HELP PLEASE NEED ASAP- FIVE QUESTIONS ON SCIENTIFIC NOTATION Combine the like terms in the expression. A. -12x^4 + 7x^4 + 6x^4 B. 2r + 7r + 16x C. 30z^8 + 7z^8 + 8z D. 15a^2 - 15b^2 + 13a^2 - b^2 E. 7x^2 - 82x + 12x^2 - 2x

QUESTION POSTED AT 26/03/2020 - 02:27 PM

Answered by admin AT 26/03/2020 - 02:27 PM

A. x^4
B. 9r + 16x
C. 37z^8 + 8z
D. 28a^2 - 16b^2
E. 19x^2 - 84x
Post your answer

Related questions

For the function f(x) = –5x, which ordered pair will be a point on the graph of the function? A. (–5, 1) B. (2, 10) C. (15, –3) D. (0, 0)

It's D: (0,0)
This is because when you put 0 in for x your y value will equal 0 and that is one of your answers, so it's the point (0,0) 

ANSWERED AT 28/03/2020 - 07:19 PM


QUESTION POSTED AT 28/03/2020 - 07:19 PM

Help with 2 questions please

1 is 18 and 2 is 16 and thats it

ANSWERED AT 28/03/2020 - 12:55 PM


QUESTION POSTED AT 28/03/2020 - 12:55 PM

Can someone give me a question that's dividing fractions and then I'll message you and you give me the answer

What is the answer to this fraction division problem? 1/8÷1/16

ANSWERED AT 28/03/2020 - 12:54 PM


QUESTION POSTED AT 28/03/2020 - 12:54 PM

What is the effect on the graph of the function f(x) = 2x when f(x) is changed to f(3x)? A) vertical stretching B) vertical compression C) horizontal compression D) horizontal stretching

Answer:

C)  Horizontal compression

Step-by-step explanation:

Since, if y = f(x) is a function,

Then y = a f(x) gives a vertical stretch if a > 1 and gives a vertical compression if 0 < a < 1.

Also, y = f(bx) gives a horizontal stretch when 0 < b < 1 and gives a horizontal compression if b > 1.

Here,

The given parent function is,

f(x) = 2x

And, 3 > 1

Thus, by the above statements,

f(3x) will give a horizontal compression.

Hence, Option C is correct.

ANSWERED AT 28/03/2020 - 12:51 PM


QUESTION POSTED AT 28/03/2020 - 12:51 PM

How do you factor b^2-81

The middle number is 0 and the last is -81Factoring means we want something like(b+_)(b+_)We need two numbers that add together to get and Multiply to get -81which are 9 and -9:9+-9 = 0 and 9*-9 = -81
Fill in the blanks in
(b+_)(b+_)
with 9 and -9 to get...(b+9)(b−9)
The answer is : (b+9)(b−9)

ANSWERED AT 28/03/2020 - 12:49 PM


QUESTION POSTED AT 28/03/2020 - 12:49 PM

Pleaseeeeeeee help me i have 2 questions

The answer would be -6 I dont have time to explin but I promise I am in Geometry and Algebra 11 as a sophomore. Hope this helps on the first one .

ANSWERED AT 28/03/2020 - 12:48 PM


QUESTION POSTED AT 28/03/2020 - 12:47 PM

What are the intercepts of 6x + 8y = 24? a.(4, 0) and (0, 1) b.(12, 0) and (0, 1) c.(3, 0) and (0, 4) d.(4, 0) and (0, 3)

6x + 8y = 24

x intercept is the value when y =0 & y intercept is the value when x=0


for y=0 ==> 6x+0 =24 ==> x=4 for x=0==> 0+8y =24 ==> y=3

(4,0) & (0,3) (ANSWER d)

ANSWERED AT 28/03/2020 - 12:46 PM


QUESTION POSTED AT 28/03/2020 - 12:46 PM

Figure out the number of solution 6x^2=-2x-2 A 2 real unequal solutions B 2 complex imaginary solutions C one real solution

 Choice B is the answer

ANSWERED AT 28/03/2020 - 12:46 PM


QUESTION POSTED AT 28/03/2020 - 12:46 PM

Here's the whole thing. Please, if you can't answer it, tell someone who can. I need this asap. Do not put smart aleck answers or I'll report you. 50 points.

The answer is 4.3 i don't wha t that other means with 6.7                                                

ANSWERED AT 28/03/2020 - 12:38 PM


QUESTION POSTED AT 28/03/2020 - 12:38 PM

Verify sin^4x-cos^4x/sin^2x-cos^2x=1

\bf sin^2(\theta)+cos^2(\theta)=1&#10;\\\\\\&#10;\textit{difference of squares}&#10;\\ \quad \\&#10;(a-b)(a+b) = a^2-b^2\qquad \qquad &#10;a^2-b^2 = (a-b)(a+b)\\\\&#10;-----------------------------\\\\&#10;\cfrac{sin^4(x)-cos^4(x)}{sin^2(x)-cos^2(x)}=1\\\\&#10;-----------------------------\\\\

\bf \cfrac{sin^4(x)-cos^4(x)}{sin^2(x)-cos^2(x)}\implies \cfrac{[sin^2(x)-cos^2(x)][sin^2(x)+cos^2(x)]}{sin^2(x)-cos^2(x)}&#10;\\\\\\&#10;\cfrac{[sin^2(x)+cos^2(x)]}{1}\implies \cfrac{1}{1}\implies 1

ANSWERED AT 28/03/2020 - 12:36 PM


QUESTION POSTED AT 28/03/2020 - 12:36 PM

HELP ASAP PLEASE BRAINLEST ANSWER !!! In two or more complete sentences, compare the number of x-intercepts in the graph of f(x) = x2 to the number of x-intercepts in the graph of g(x) = -x2 +7. Be sure to include the transformations that occurred between the parent function f(x) and its image g(x).

Answer:

The function started facing up with a vertex at (0,0) since 7 was added before squaring , the graph shifts 7 units up so the vertex at (7,0) also , the function is negative do the graph is pointing down.


This means that there are two x- intercepts in g(x) and there was one x- intercepts in f(x).

ANSWERED AT 28/03/2020 - 12:34 PM


QUESTION POSTED AT 28/03/2020 - 12:34 PM

Please help me question 1 is part 1 and question 2 is part 2

Total Number of Cupcakes = 450
60\% of 450 = 450 \times 0.60 = 270

Could also do:
 \frac{450 \times 60}{100} = \frac{27000}{100} = 270

ANSWERED AT 28/03/2020 - 12:32 PM


QUESTION POSTED AT 28/03/2020 - 12:32 PM

The first three terms of a geometric sequence are shown below. What is the eighth term of the sequence? A. -128x^8-384x^7 B. 128x^8+384x^7 C. 256x^9+768x^8 D. -256x^9-768x^8

Answer:

Option A is correct.

Step-by-step explanation:

Given:

First term, a = x + 3

second term = -2x² - 6x

Third term = 4x³ + 12x²

Common ratio, r = \frac{-2x^2-6x}{x+3}=\frac{-2x(x+3)}{x+3}=-2x

nth term of GP is gievn by, a_n=ar^{n-1}

So, Eight term = a_8=(x+3)(-2x)^{8-1}=(x+3)(-2x)^{7}=-128x^8-384x^7

Therefore, Option A is correct.

ANSWERED AT 28/03/2020 - 12:31 PM


QUESTION POSTED AT 28/03/2020 - 12:31 PM

Express six cups 25 quarts as a fraction in simplest form A. 6/5 B. 3/5 C. 3/10 D. 6/20

D because  6/20  is correct  and the three wrong super wrong hope it helps

ANSWERED AT 28/03/2020 - 12:28 PM


QUESTION POSTED AT 28/03/2020 - 12:28 PM

HELP ASAP Given s(x) = 3x - 6 and t(x) = 6 - 3x. find the simplified formula and domain for v(x)=(s/t) and w(x)=(t/s)(x)

v(x)=(s/t)
= (3x - 6) / (-3x+6)
= [3(x-2)] / [-3(x-2)] --> 3 is factored out
= 1/-1 
---> common terms are cancelled out. 
= -1 ---> This is the simplified formula.

To find the domain, we equate the denominator to 0.
-3x+6 = 0
3x = 6
x = 2
Domain: all values except 2.

w(x)=(t/s)(x)
= (-3x+6)x / (3x-6)
= [-3x(x-2)] / [3(x-2)] --> 3 is factored out
= -x --> The common terms are cancelled out. This is the simplified formula.

Solving for domain:
3x-6 = 0
3x = 6
x = 2
Domain: all values except 2.

ANSWERED AT 28/03/2020 - 12:27 PM


QUESTION POSTED AT 28/03/2020 - 12:27 PM

I need help! ASAP!!!

Circumference formula: 2πr
Diameter: 2r
1: 15×3.14= 47.1 in
2. AB is radius so use circumference formula to solve for r
20=2πr
20=6.28r
R=3.18 cm or 3.2 cm

ANSWERED AT 28/03/2020 - 12:26 PM


QUESTION POSTED AT 28/03/2020 - 12:26 PM

1) 2x+8y=20 y=2 2x+8(2)=20 2) x=5 2x+y=10 2(5)+y=10 3) 5x-2y=3 y=2x 5x-2(2x)=3 4) 2y+x=-15 x=3y 2y+(3x)=-15 5) 4x+7y=19 y=x+9 4x+7(x+9)=19 6)y=6x+11 2y-4x+14 2(6x+11)-4x+14 7)2x-8y=6 y=-7-x 2x-8(-7-x)=6 8) x=2y-1 3x-2y=-3 3(2y-1)-2y=-3 what is the process and what x and y equal

If they give you what one variable is, you can plug it into the equation and use algebra to solve it. So:

1)2x=4 -> 4/2 = 2 so x=2

2) y=0

3) x=3

4) 2y + (3*3y) = -15
11y=-15 
y = -15/11

5) 4x + 7x + 63 = 19
11x = -44
x = -4

ANSWERED AT 28/03/2020 - 12:21 PM


QUESTION POSTED AT 28/03/2020 - 12:21 PM

Maria will spin the arrow on the spinner 2 times. What is the probability that the arrow will stop on the same letter twice? A. 1/9 B. 2/9 C. 1/3 D. 5/9

Answer:

probability that the arrow will stop on the same letter twice = \frac{1}{3} (c).

Step-by-step explanation:

Given : Maria will spin the arrow on the spinner 2 times.

To find : What is the probability that the arrow will stop on the same letter twice.

Solution : We have given a spinner that spin twice and stop on the same letter.

Formula for probability = \frac{number \ of \ favorable\ outcome}{Total \number\ of \possible \outcome}.

Here, total part of spinner = 3 and it spin two times

So, total possible outcome = 6.  Arrow ston on same letter twice( favorable outcome) =2.

Plugging the values in formula :

Probability =  \frac{2}{6}.

Probability =  \frac{1}{3}.

Therefore,  probability that the arrow will stop on the same letter twice = \frac{1}{3} (c).

ANSWERED AT 28/03/2020 - 12:20 PM


QUESTION POSTED AT 28/03/2020 - 12:20 PM

Someone please help with the question about the ladder!!

Hey, your attempt is nearly correct.
You mixed up the length of the ladder and the height of the house/the reach of the ladder, otherwise the ladder would get longer the further away it is from the wall it's leaning on.
The length of the ladder (4.2m) is your diagonal=c
1.3m=b
a²+b²=c²
a²+1.3²=4.2²
a²+1.69=17.641
a²=17.641-1.69
a²=15,951≈16
a=3.9939≈4

ANSWERED AT 28/03/2020 - 12:19 PM


QUESTION POSTED AT 28/03/2020 - 12:19 PM

Please help with this homework question please!!! where does a hippos habitat take place? and where and what are a hippos natural resources? Find a way to combine these to questions into a thesis like statement.

There are two species of Hippos and they prefer different types of habitat. For the Common Hippo, they live mainly in the Eastern part of Africa around the Sahara. They are the more aggressive type of Hippo and the ones that are often known to be eating the crops that villagers have planted for their own needs.

ANSWERED AT 28/03/2020 - 12:19 PM


QUESTION POSTED AT 28/03/2020 - 12:19 PM

7e-m-4w if e=3, m=–8, w=1?9x-3y-f if X=3, Y=1, F= –8?–b - 4x +7g if B=2, X= 4, G=5??

Answer:


Step-by-step explanation:


ANSWERED AT 28/03/2020 - 12:06 PM


QUESTION POSTED AT 28/03/2020 - 12:06 PM

Which answer shows 0.00897 written in scientific notation?

0.879 x 10 ^-2

or 

8.97 x 10 ^3

you count from the decimal i just dont remember if you count forward when its negative and backwards when its positive or the other way around.

ANSWERED AT 28/03/2020 - 12:06 PM


QUESTION POSTED AT 28/03/2020 - 12:06 PM

Evaluate the following expression when x = 6 and y = 2: Fraction with x squared plus y cubed in the numerator and 2 plus x in the denominator. 2.25 5.5 17.25 27.5

(x^2 +y^3)/(2+x)
(6^2 +2^3)/(2+6)
(36+8)/(8)
(44)/(8)
5.5
Your answer is 5.5

ANSWERED AT 28/03/2020 - 12:06 PM


QUESTION POSTED AT 28/03/2020 - 12:06 PM

What is 2x+4 if x is equal to 45

2x + 4

If x = 45

2 (45) + 4
= 90 + 4

= 94

ANSWERED AT 28/03/2020 - 12:05 PM


QUESTION POSTED AT 28/03/2020 - 12:05 PM

HELP ME PLEASE! In a geometric sequence, and . What is the 12th term? A. 5,616 B. 354,294 C. 14,350,365 D. 234,812,358

the answer is B

because 54x 3= 162 x3 = 486x3= 1458x3=4,374x3=13,122x3=39,366x3=118,098x3=354,294

ANSWERED AT 28/03/2020 - 12:05 PM


QUESTION POSTED AT 28/03/2020 - 12:05 PM