MATHEMATICS HIGH SCHOOL

Help me please 20 points

Answers

Answer 1

Answer:

Answer:

- 8n + 9

Step-by-step explanation:

A - B

= - 3n + 2 - (5n - 7) ← distribute by - 1

= - 3n + 2 - 5n + 7 ← collect like terms

= - 8n + 9 → or 9 - 8n

Related Questions

An airline allows each passenger 33 kilograms of luggage. Carl has to lower the weight of his suitcase by 25% to stay within the limit. How much did the suitcase originally weigh?
Can someone put this equation in standard form for me? y-3=1/5(x-3)Standard form : Ax+By=C
If x = 2, find the value of 3x^3 - 3x - 2.
I need help PLEASE.
a baker is calculating the charge for two types of cookies. what formula tells the cost, in dollars, if chocolate chip cookies are $2.00/dozen and lemon frosteds are $1.50/dozen? let c=number of dozens of chocolate chip cookies; l=number of dozens of lemon frosteds; t =total charge. A. T=3.50(L+c) B. T=200c+150L C. T=2.00c+1.50L D. T=1.50c+2.00L

Suppose that w and t vary inversely and that t = 5/12 when w= 4. Write a function that models the inverse
variation and find t when w = 5.
A. T=5/12w; 5/12
B.t=5/3w;1/3
C.t=5/48w;5/192
D.t=5/12w;1/3

Answers

Answer:

Option B. t=5/3w ;1/3

Step-by-step explanation:

We are told that $w$ varies Inversely with $t$ thus generally speaking $w$ ∝ $(1)/(t)$ since they are inverted, otherwise if they were proportionally varied then $w$ ∝ $t$ . This means that there is a constant value ( $a$ ) for which $w$ is inversely proportional to $t$ and can be mathematically expressed as:

$w=(a)/(t)$ Eqn. (1)

Now since we are given the values of $w=4$ and $t=(5)/(12)$ , we can plug them in Eqn. (1) and find our constant of proportionality $a$ as follow:

$w=(a)/(t)\n \na=wt\n\na=(4)((5)/(12) )\n\na=(5)/(3)$

Now that we have our constant we can find the new $t$ value for the second value of $w=5$ as follow:

$w=(a)/(t) \n\nt=(a)/(w)\n \nt=((5)/(3) )/(5)\n\nt=(5)/(15)\n \nt=(1)/(3)\n$

Therefore based on the options give, we can see that Option B. is correct since

$t=(5)/(3w)$ and for $w=5$ , then $t=(1)/(3)$

Ryan was adding numbers on a number line. He started at –3 and then he added +2. He wrote that his answer was –5 . Is Ryan's answer reasonable?

A.
No, it is not reasonable because if you start at –3, you will move 2 spaces to the right and get –1.

B.
No, it is not reasonable because if you add two integers, you get a positive integer. The answer is +5.

C.
Yes, it is reasonable because if you start at –3, you will move 2 spaces to the left and get –5.

Answers

The answer is A because it is -1 because it would go to the right when you add two

Use the following frequency distribution to determine the midpoint of the second class.A. 17.0

B. 19.5

C. 16.5

D. 18.5

Answers

Class Frequency Mid-point
13-15 7 13+15/2=20.516-18 4 16+18/2=1719-21 3 19+21/2=2022-24 5 22+24/2=2325-27 7 25+27/2=2628-30 7 28+30/2=29

(16+18)/2 = 17
So, the answer is A (17).

Help on a question geometry

Answers

2log 3 = log 3^2 = log 9 ;
log 5 + 2log 3 = log 5 + log 9 = log( 5 * 9 ) = log 45 ;
log ( x - 12 ) = log 45;
x - 12 = 45 ;
x = 12 + 45 ;
x = 57 ;
But, x - 12 > 0;
And, 57 - 12 > 0 ;
The solution is 57 .

$D:x-12>0\nD:x>12\n\log_3(x-12)=\log_35+2\log_33\n\log_3(x-12)=\log_35+\log_33^2\n\log_3(x-12)=\log_35+\log_39\n\log_3(x-12)=\log_3(9\cdot5)\n\log_3(x-12)=\log_345\nx-12=45\n\boxed{x=57}$

5 people share 3 bags of trail mix which fraction would each get?

Answers

They each get 1/5 of the 3 bags

You would get 1 2/3 as a fraction

The temperature was -4°F this morning. If the temperature dropped 7°F, what is the temperature now?

Answers

The temperature was -4°F this morning. If the temperature dropped 7°F then the temperature now should be -11° fahrenheit.

How are Kelvin, Celsius, and Fahrenheit related?

We have got an equation that can relate these three units of measurement of temperature, as given below:

$(C)/(5) = (F - 32)/(9) = (K - 273)/(5)$

where C represents the measurement of a fixed temperature in celsius, F represents the measurement of that same intensity temperature in Fahrenheit, and also K represents the measurement of equally intense temperature in kelvin.

Given that the temperature was -4° in the morning. And the temperature dropped 7° later.

We have to Subtract 7 from -4.

-4 - 7 = 11

Thus, The temperature now should be -11°F.

Learn more about the temperature scale here:

brainly.com/question/2919967

#SPJ2

Answer:

-11°F

Step-by-step explanation:

The temperature was -4° in the morning. The temperature dropped 7° later.

Subtract 7 from -4.