3.
(a)
Expand and simplify 3(x - 3y) + 6y - 8x

SOME1 PLSS HELPP

Answer:

62.8km/hr

Step-by-step explanation:

Given parameters:

Displacement  = 220km due north

Time taken = 3.5hrs

Unknown:

Velocity in km/hr = ?

Solution:

Velocity is the rate of displacement per unit of time. This physical quantity is a vector which has both magnitude and directional attributes.

 So, mathematically;

           Velocity  = [tex]\frac{displacement}{time taken}[/tex]

Insert the parameters and solve;

          Velocity  = [tex]\frac{220}{3.5}[/tex]   = 62.8km/hr

Answer:

=> The answer is 16

Step-by-step explanation:

Given :

a = -2

b = 3

c = -1

Answer:

2

Step-by-step explanation:

substitute the given values into the expression

[tex]\sqrt[4]{(3-(-2))(\frac{-2(3)^2(-1)}{3+3})+1 }[/tex]

= [tex]\sqrt[4]{(3+2)(\frac{18}{6})+1 }[/tex]

= [tex]\sqrt[4]{5(3)+1}[/tex]

= [tex]\sqrt[4]{16}[/tex]

= 2

Answer:

Its below

Step-by-step explanation:

8x-3:

Number of terms: 2

Coefficient: 8

Constant: -3

4m + n + 11:

Number of terms: 3

Coefficient: 4,1

Constant:  11

Answer:

numbers of terms are 3

coefficient is4

constant 11

Step-by-step explanation:

Answer:

Step-by-step explanation:

9.6×10^9=96/10 ×10^9=96×10^8=9,600,000,000

Answer:

A 13°

Step-by-step explanation:

We need to know the measure of angle LMN.

The angle measures of a triangle add up to 180°.

MLN=15°

LNM=180-28=152° (LNM and MNP are supplementary, meaning they add up to 180°)

LMN=15+152=167 180-167=13

Hope this helps :-)

Answer:

106 degrees

Step-by-step explanation:

1. Supplementary angles add up to 180.  So subtract 74 from 180 to find the measure of angle C.

2. The full square isn't visible to answer.

1. m∠C = 106°

If angle A and angle C are supplementary, then the sum of their measures is 180°. Thus:

m∠A + m∠C = 180°

74° + m∠C = 180°

m∠C = 180° - 74°

m∠C = 106°

sorry number 1 lang asan kase yung figure sa number 2

Answer:

14.25

Step-by-step explanation:

1 d.p so 1/2=0.5

14.2+0.5=14.25

Answer:

if jhonny had one apple how many apple does the chicken have in the basement across the road in his house under the bed??

Step-by-step explanation:

The factors of the given expression [tex]144-49x^{2}[/tex] will be  [tex](7x+12)(7x-12)[/tex]

It is given that

[tex]144-49x^{2}[/tex]

Now by simplifying it

[tex](12)^{2} -(7x)^{2}[/tex]

Now from the formula, we know

[tex]a^{2} -b^{2} = (a+b)(a-b)[/tex]

So it will become

[tex](12)^{2} -(7x)^{2}= (12-7x)(12+7x)[/tex]

Thus the factors of the given expression [tex]144-49x^{2}[/tex] will be (7x+12)(7x-12)

To know more about the Factors follow

https://brainly.com/question/25829061

Answer:

oh this isnt math but im learning about this

electrical ; thermal

Step-by-step explanation:

because the computer turns on with electricity then it gets hot which is thermal

Answer:

D, 210 ft

Step-by-step explanation:

half in inch equals 7 ft and if theretheres 15 in

15x2=30

30×7=210

Answer:

145

Step-by-step explanation:

Because what you want to do is add 260 to 182 then subtract from 587. I hope that helped! :)

Answer:

9 months

Step-by-step explanation:

8m + 3 = 75

      -3     -3

8m = 72

/8      /8

m = 9

In 9 months the tree will be 75 inches tall

growth whose rate becomes ever more rapid in proportion to the growing total number or size.

Set _2__ is a _4__ of set __6_.”

Answer:

Step-by-step explanation:

Answer:

22.50

Step-by-step explanation:

Hat = $18

Austin - 6 letters

0.75 x 6 = 4.5

Letters cost $4.50

18 + 4.5 = 22.5

He'll have to pay 22.50 dollars.

Hope this helps!

Answer: No. Collin was wrong.

Step-by-step explanation:

From the question, we are informed that the answer that Collin had on his paper was −13 − (15 + 58) and the correct answer, located in the back of the book, was −13 −15 + 58.

Collin is wrong because he didn't take into cognisance the effect of minus on the bracket. Here, −13 − (15 + 58) will be equal to -13 -15 -18. This is because minus multiplied by plus equals to minus. He shouldn't have put the numbers in the bracket.

Answer:

Step-by-step explanation:

What ever one you think is better.

Answer:it is jo wilson

Answer:

40.81125m²

Step-by-step explanation:

Hello!

Step 1: Rectangle

We can find the area of the rectangle by multiplying the base by the height.

Step 2: Area small semicircles

If we add the two semicircles, we can see that it's actually 1 whole circle.

So we can simply find the area of the whole circle.

radius = 1/2 * diameter

Step 3: Large semicircle

Now for the last part, the large semi-circle at the top.

Since it's half a circle, we can manipulate the formula by finding half of it.

Step 4: Total Area

Total area = 10m² + 3.14m² + 9.8125m²

                 = 40.81125m²

Answer:

Honestly, I feel you. I've been there. Being the new kid not also brings problems related to your character, but to your feelings. I totally think you're smarter than all your other classmates! :D. Keep being yourself and never let them bring you down. If you fall down and don't feel like getting back up, remember this message!

- Benji :)

Answer:

They may not know very much about you and assume things about you based on things they see and perceive that are separate from the grades that you get and/or they think you aren't intelligent on something to do with your emotions/behavior and/or someone or some amount of people have developed something against you, these are just potential situations.

Step-by-step explanation:

Regardless of what the reason is, move forward with what you do and meet people who enjoy your company. Those who treat you badly are not worth your time. Best of luck!

Creo que es 3,300, si aunque no entiendo bien

Answer:

x = -4

Step-by-step explanation:

-2x - 5 = 3

Add 5 to both sides

-2x - 5 + 5 = 3 + 5

Simplify

-2x = 8

Divide both sides by -2

-2x/-2 = 8/-2

Simplify

x = -4

Answer:

It costed $1200

Step-by-step explanation:

First Month Saved 1/3 of total cost

Second Month (1/3 of total cost) - 125

Third Month 525

525-125= 1/3 of total (If she saved the same amount the second month as the first month, then she's already saved 2/3 of the money)

400 = 1/3 of total cost

3X400=1200

Step-by-step explanation:

so, we had

4+3+2+2+6 = 17 experiments

I assume the spinner has 5 equality sized fields with different colors.

so, normally we would assume that in average each color has the same probability : 1/5 (desired results over totally possible results).

the experiments with the actual spinner give us now observational data and probabilities.

after all, a spinner (as a die, or a roulette wheel, or ...) can have slightly different probabilities for the individual outcomes based on design and manufacturing.

so, based on these results we see the actual probabilities like this

red 4/17

blue 3/17

green 2/17

yellow 2/17

purple 6/17

so, the observed probability shows us a probability of blue in the next spin to be 3/17.

please note, that after that next (18th) spin all the observed probabilities have to be updated depending on the actual result.

so, if the result of spin 18 is indeed blue, the probabilities for spin 19 would change to

red 4/18

blue 4/18

green 2/18

yellow 2/18

purple 6/18

Answer:

complementary angles