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
Assoli18 [71]
3 years ago
5

Plzzzzzz help meeeee​

Mathematics
1 answer:
kipiarov [429]3 years ago
5 0

Answer:

Step-by-step explanation:

For A, 7x=21, it is asking, 7 multiplied by what number is 21? We can try to figure it out. Let's start with 0.

7(0)≠21

Then 1.

7(1)≠21

7(2)≠21

7(3)=21

Therefore, for question a, the answer is 3.

For question b, it's asking 6 minus what is 2.

With this one, we can say it is 4, since 6-4=2.

Now moving on to B.

a) 2x+4=16

We need to isolate x in order to find it's value.

So we can begin with subtracting 4 from both sides, getting us:

2x=12

Then, if we divide both terms by 2, we get x.

x=12/2

x=6.

b)

3 x (z/4)=9

Again, we need to isolate z.

So, we multiply both sides by 4, getting us

3z=36

then we divide by 3

z=36/3

z=12

c) 16-x=2

Here we simply subtract 16 from each side, then flip the signs to get positive x.

So, 16-x=2

-x=-14

x=14

d) 4k=20

This is essentially asking, 4 times what number is 20?

So we can divide both sides by 4 and get

k=20/4

k=5

You might be interested in
Larry made 85% on his exam. If there were 140 questions, how many did he answer correctly
ella [17]

Answer:

119

Step-by-step explanation:

Divided by x and y for total engagement of relationship between two beings of equation.

3 0
3 years ago
Simple Area Finding Question. Good explanation with steps and formula needed!
kirza4 [7]
90 square ft (try and look at it like each side is a 2d rectangle, find the areas of the sides and then add them up.)
8 0
3 years ago
Help me ???? Really need the help i dont remember learning this
vlada-n [284]
Hmmmm

the 1 in 435.15 is worth 0.1 or 1/10


1/10 of 1/10 is 1/10 times 1/10 or 1/100 or 0.1/10 or 0.01/1 or 0.01

so we want one with the 1 that is 2 spaces to the right of the decimal
that is choice H
remember, when you divide by 10, move the decimal to the left 1 space

H is the answer
4 0
3 years ago
Which statement about 214° is correct?
fredd [130]

Answer:

A

Step-by-step explanation:

sin 214 = -0.5591

tan 214 = 0.6745

cos 214 = -0.8290

6 0
3 years ago
Read 2 more answers
Which expression can be used to find 32% of 130?
ser-zykov [4K]

Answer:

130 times .32

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Other questions:
  • 2) What is the value of the digit 2 in the number 529?*<br> 12<br> 20<br> 29<br> 200
    13·2 answers
  • The hare leaps 500 centimeters every 20 seconds. the tortoise crawls 250 centimeters every 50 seconds, but gets a 1000‑centimete
    11·1 answer
  • Translate the sentence into an inequality. <br> Twice w is greater than 24.
    7·1 answer
  • 8. Each letter of the word 'Mississippi' is written on an individual card and put in a bag. A card is
    10·2 answers
  • A model rocket is launched with an initial upward velocity of
    13·1 answer
  • Factor the polynomial by it’s greatest common monomial factor. <br> 12k^3 - 30k^4
    12·2 answers
  • Hellppppppp:))))) Meee
    10·1 answer
  • I am a two digit number above 50. the sum of my digits is twelve and the difference of my digits is 4. who am I?​
    14·1 answer
  • Hi please help me with 6 and 7 also 8 for brainlst :)
    7·2 answers
  • At chucky bee restaurant, the meal costs $55.25 and desserts cost $15.75 for 5 people. How much money does each person have to p
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!