1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
malfutka [58]
3 years ago
12

Need help asap with these

Mathematics
1 answer:
IRISSAK [1]3 years ago
6 0

Answer:

1. 6n - 15

2. x + 10

3. -4d + 15

4. true, associative property

5. distributive, commutative

Step-by-step explanation:

1. distribute 3/4 into the parentheses, so multiply 3/4 * 8 and 3/4 * -20

2. distribute the 2 into the parentheses so multiply 2 * 3x and 2 * 5, then combine like terms

3. distribute -3 into the parentheses so -3 * 4D and -3 * -5 then add like terms

4. add like terms on both sides of the equal sign and you get 10x on both sides. this is the associative property because it doesn't matter what's inside or outside the parentheses you get the same answer no matter how you add them up

5. the first part is distributive because you distributed the three into the parentheses and the second part is commutative because you switch them around and you can get the same answer

You might be interested in
Please help I need your help
irinina [24]

Answer:

y=⅓x-3

Step-by-step explanation:

y--2=⅓(x-3)

y+2=⅓x-1

y=⅓x-1-2

y=⅓x-3

5 0
2 years ago
Is k=6 a solution to the equation: 1/3k = 3
Step2247 [10]

Answer: No it's not

Step-by-step explanation:

1/3 x 6/1 = 6/3

6/3 = 2

8 0
2 years ago
Read 2 more answers
Please help me solve for the value of x
love history [14]

Step-by-step explanation:

hope i helped pleae mark brainliest

6 0
3 years ago
Read 2 more answers
Please help me with this
horrorfan [7]

Answer:

\dfrac{4000\pi}{3} ft³

Step-by-step explanation:

First, let's figure out how to get the <em>volume </em>of a sphere from its <em>surface area</em>. If r is the radius of our sphere, then

The formula for a sphere's surface area is A = 4\pi r^2

The formula for a sphere's volume is V=\frac{4}{3}\pi r^3

So to get from area to volume, we have to <em>divide the area by 3 </em>and then <em>multiply it by r.</em> Mathematically:

V=\frac{A}{3}r

Before we solve for V though, we need to find the radius of our sphere. Thankfully, we're given the surface area - 400\pi ft² - so we can use the area formula to find that radius:

A=4\pi r^2=400\pi\\r^2=100\\r=10

And now that we have our radius, we can put it into our volume formula to find

V=\frac{A}{3} r=\frac{400\pi}{3}(10)=\frac{4000\pi}{3} ft³

4 0
3 years ago
Sam average 13 points per game in her first three basketball games. She averaged 14.5 points in her first four games. How many p
kvasek [131]

Answer:

19

Step-by-step explanation:

<em>1</em><em>3</em><em>×</em><em>3</em><em>=</em><em> </em><em>3</em><em>9</em>

<em>1</em><em>4</em><em>.</em><em>5</em><em>×</em><em>4</em><em>=</em><em> </em><em>5</em><em>8</em>

<em>5</em><em>8</em><em>-</em><em>3</em><em>9</em><em>=</em><em> </em><em>1</em><em>9</em>

5 0
3 years ago
Other questions:
  • An integer added to an integer is an integer true sometimes or never true
    13·2 answers
  • Please help me !
    11·2 answers
  • Unit rate word problem,Bridget read a total of 48 books over 12 months.If Bridget has 68 books so far,how many month has she bee
    15·1 answer
  • Choose the graph of y = 2cosx
    14·1 answer
  • What is a multi-step equation with an answer of x= 1
    8·2 answers
  • Please solve ASAP, 3k+16=9+6x? and show ur work please?​
    7·1 answer
  • Fill in each box below with an integer or a reduced fraction.
    10·1 answer
  • Identify the percent of change as an increase or decrease. Then find the percent of
    15·1 answer
  • dori lives 1/4 Mile from school if she walks to and from school each day how far does Dori walk during the school week
    6·1 answer
  • 12<br> What is the slope of the line that passes through the points (2, 3) and (8, 6)?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!