I need help explaining

I Need Help Explaining

Answers

Answer 1

Answer:

Sure.

Step-by-step explanation:

So X is a variable meaning its a letter that represents a number. When there are a number and a variable (or a letter) like this 2x or 9y it means you are going to multiply the number by the variable. In this case it is 7 times x is equal to 21 so all we have to do is find what times 7 is equal to 21 and that number is 3. So if 7*x=21 is 7*3=21 then x=3. If you have any questions ill be more than open to answering them, hopefully this helped. Have a good day/night.

Answer 2
7x means 7 times a “mystery number” = 21
We can ask, “7 times what equals 21?”

The math family of equations here is
3 x 7 = 21
7 x 3 = 21
21 / 7 = 3
21 / 3 = 7

So to solve for x, or find out mystery number, we have 7x = 21
Whatever we do to one side of the equation, we have to do to the other side to keep it equal. Here, we’ll divide both sides by 7, so that on the left side, x is by itself.
Then we have x = 21/7 which is x = 3

Please ask any questions in the comments

Related Questions

This recipe makes 16 portions of potato soup.
Richard follows the recipe but wants to make 4 portions.
Complete the amounts of each ingredient that he needs.

Recipe: Serves 16
96 mL oil
240 g onions
1.44 kg potatoes
1.6 L milk

Answers

Answer:

24 ml oil

60g onions

0.36kg potatoes

0.4L milk

Step-by-step explanation:

Oil=96/16 *4=24ml

Onions=240/16*4=60g

Potatoes=1.44/16*4=0.36kg

Milk=1.6/16*4=0.4L

-8x-y=20 y=-4x

what is the substitution?

Answers

Answer:

For the first variable in one of the equations, then substitute the result into the other equation.

Point Form:

( 1 , 4 )

Equation Form:

x = 1 , y = 4lanation:

Miles can type 35 words per minute. Let w represent the number of words and m represent the minutes. Which equation best represents this situation?

Answers

Answer:

35w x m

Step-by-step explanation:

please help me with this I need it asap ! Find the surface area

Answers

Answer:

62

Step-by-step explanation:

5 * 3 * 2 = 30

3 * 2 * 2 = 12

5 * 2 * 2 = 20

30 + 12 + 20 = 62

pls help !
question - x divided by 3/7 = 7/15

btw the x is just an unknown fraction

Answers

x = 1/5!!

I multiplied 3/7 by 7/15 to get my answer :)

✨42 POINTS✨PLEASE HELP 6th grade math!!! need answers for A B and C

Answers

9514 1404 393

Answer:

  A"(-6, 3)

  B"(-9, 0)

  C"(-5, -1)

Step-by-step explanation:

We presume the first transformation is a translation 4 units right and 1 unit up:

  (x, y) ⇒ (x+4, y+1)

The second transformation negates the x-coordinate, so the two transformations together have the rule ...

  (x, y) ⇒ (-(x+4), y+1)

Then the transformed points are ...

 A"(-6, 3)

  B"(-9, 0)

  C"(-5, -1)

The simplest form of 80 can be written as
aVb, where a =
and b =

Answers

Both equal 49 if I did my math right

Answer: The expression that is equivalent to root of 80 is B and a=4 b=5

Step-by-step explanation: Happy early Christmas guys :) giving away 100 points soon for whoever comments on my " question'' first stay tuned!

Please give me the correct answer!!!!

Answers

Answer:

There is no question, sorry

Step-by-step explanation:

I need help on this and the first person who answer correctly gets a BRANILIST​

Answers

Answer:

first you need to set up the equation which is 20+2x=44 then isolate 2x by doing the inverse operation for 20 which is -20 and add them to both sides which would now give you 2x=24 so divde 24 by 2 which is 12, x=12 answer 12ml

Step-by-step explanation:

Determine whether the event is impossible, unlikely, as likely as not, likely
or certain. You flip a fair coin and the coin will land heads up.

Answers

as likely as not.
EXPLANATION: a coin has 2 sides. (usually heads and tails)
50% chance it is heads
50% chance it is tails
50=50.
So it is just as likely to happen as it is likely to not.

what is tan 30°?
a. √2
b. 2/√3
c. √3
d. 1/√3
e. 1
f. √3/2​

Answers

Answer:

F √3/2

Step-by-step explanation:

I had quiz on it and it's on the unit circle

Answer:

I think D. 1/√3

Step-by-step explanation:

Jahnay is following this recipe to make cakes.
Jahnay uses 720 g of flour.
How many cakes is Jahnay making?

Recipe: Makes 1 Cake
90 g sugar
120 g butter
240 g flour
3 eggs

Answers

Answer:

3 cakes

Step-by-step explanation:

720/240

= 3

Thus, he is making 3 cakes.

please help 20 points

Answers

Answer:

C

Step-by-step explanation:

plz i need brainliest

Answer and Step-by-step explanation:

The range of this graph is the third answer choice, or 0 < y < ∞.

This is because the range keeps going to try and reach 0, but never touching 0. And the range goes up infinitely.

#teamtrees #PAW (Plant And Water)

A fair coin was flipped 50 times. It landed on heads 29 times.
What is the experimental probability that the coin landed on tails?

Answers

Answer:

21/50, 42%

Step-by-step explanation:

The total times the coin was flipped is 50 and the number of times it landed on tails is 50-29=21. So we need to divide 21 by 50, which gives us 42%.

Find the slope of the line passing through the points
B) (5,-2) and (-3,4)

Answers

m = y2-y1/x2-x1

m = 4-(-2)/-3-5

m = 6/-8

m= -6/8 = -3/4 (simplified)

Factoring, Algebra
There are two questions :v

Answers

Answer:

Step-by-step explanation:

One

v^2 - 16

This formation is called the difference of squares. That's because there are 2 squares v^2 and 16. The key to this question is the minus sign.

The square root of v^2 = v

The square root of 16 = 4

You get (v + 4)(v - 4)

Let's see what happens when you expand it.

v*v = v^2v*(-4) = - 4vv*(4) = 4v4*-4 = - 16

Look what happens when you add these 4 terms together.

v^2 - 4v + 4v - 16v^2 - 16

is what is left. The two middle terms cancel out.

Two

This one is a perfect square

w^2 + 16w + 64

(w + 8)(w + 8)

Notice both factors are the same. You might wonder how I new that.

w^2 is a perfect square so take the square root.  ....   v      

64 is a perfect square so take the square root    .....    8

Now you have to work backwards to see if it is right.

w*w = w^2w*8 = 8w8*w = 8w8^2 = 64

Adding you get w^2 + 16w + 64 which is what you started with.

Step-by-step explanation:

pfuctdgvlghtof ign? ?khgdohetsogsruxjg!

Please help this is a homework grade and it’s important. If answer is right I will mark brainliest have a good day !

Answers

Answer:

[tex]y = \frac{7}{6} x[/tex]

Step-by-step explanation:

Slope-intercept form is

[tex]y = mx + b[/tex]

Where m = slope,

and b = y-intercept.

The problem states that the slope is [tex]\frac{7}{6}[/tex], and it also states that one point on the line is the origin. (0, 0)

Because the origin crosses the y-axis at point 0, we know that the y-intercept is 0.

All that's left to do is plug these values into the slope formula.

[tex]y = \frac{7}{6} x + 0[/tex]

We can then simplify the equation even more.

[tex]y = \frac{7}{6} x[/tex]

Please please please answer ASAP!

What is the length of a diagonal of a cube with a side length of 3 cm?
StartRoot 18 EndRoot cm
StartRoot 27 EndRoot cm
StartRoot 33 EndRoot cm
StartRoot 38 EndRoot cm

Answers

Answer:

27

Step-by-step explanation:

d^2=x^2+y^2+z^2, and since this is a cube, x=y=z=s, and we are told that s=3

d^2=3s^2  and s=3

d^2=3(3^2)

d^2=3(9)

d^2=27

d=√27

StartRoot 27 EndRoot cm

Answer:

27

Step-by-step explanation:

3×√3 = 5.196

√27 = 5.196

StartRoot 27 EndRoot cm

Work out the following (+35) + (-33)

Answers

Answer:

2

Step-by-step explanation:

so (+35) can be written as 35 because it's automatically already positive. +(-33) can be written as -33 because of one negative sign and one positive sign (if it was two negative or two positive, it would be positive). it's the same as 35-33, and 35-33=2.

Answer:

(+35) + (-33)

⇒ 35-33

⇒2

Adding Fractions | 10 points | 5 stars | Brainiest

Answers

Answer:

Change the mixed fraction to improper fraction

4over3 + 3over4=×

then look for the LCM which is 12

16+9 all over 12

25 over 12

=2 whole number 1 over 12

what is the answer to -4.3x + 12 + 15.1x = 33.6?

Answers

Answer:

10.8x +45.6

Step-by-step explanation:

am smart

gimme the answer for 10 points :)

Answers

Given:

The table of values.

v and x are in direct proportion.

To find:

The formula connecting v and x.

Solution:

(a)

v and x are in direct proportion.

[tex]v\propto x[/tex]

[tex]v=kx[/tex]            ...(i)

Where, k is the constant of proportionality.

Putting v=13.6 and x=32.64, we get

[tex]13.6=k(32.64)[/tex]

[tex]\dfrac{13.6}{32.64}=k[/tex]

[tex]\dfrac{5}{12}=k[/tex]

Putting the value of k in (i), we get

[tex]v=\dfrac{5}{12}x[/tex]

Therefore, the required formula that connecting v and x is [tex]v=\dfrac{5}{12}x[/tex].

(b)

Putting v=n and x=8.16, we get

[tex]n=\dfrac{5}{12}(8.16)[/tex]

[tex]n=3.4[/tex]

Therefore, the value of n is 3.4.


plssss can someone help me asap!!!!

Answers

the answer to number 1 should be -42 and number 2 should be 327,560

Answer for 10 points please

Answers

Answer:

(n + 1) (2n - 7)

Step-by-step explanation:

2n^2 - 5n - 7

AC= 2 * -7 = -14

                -7 + 2 = -5

      2n^2 - 7n      + 2n - 7

     1n(2n - 7)       1(2n - 7)

(n + 1) (2n - 7)

Answer:

-8n

Step-by-step explanation:

2n²-5n=-1n

-1n-7=-8n

A large balloon is tethered to the ground using a 95-foot cable. The wind is pushing the balloon so that the
cable is making a 70 degree angle with the ground. Approximately how high is the balloon?
Use and label the diagram in the work space to help determine the height of the balloon.
Round your answer to the nearest tenth.

Answers

Answer:

Given the value of the trigonometric function, find the value of the other 5 ... A 25-meter line is used to tether a helium-filled balloon. Because of a breeze, the line makes an angle of approximately 75° with the ground. a. ... and use a variable to indicate the height of the balloon.

Step-by-step explanation:

Write the expression 2 3/5 as a radical

Answers

Answer:

[tex]\sqrt{6.76}[/tex]

Step-by-step explanation:

you just have to square the number given and put it under a square root sign

Step by step explanation:
2 3/5=2*5+3/5=13/5=2,6; 2,6²=6,76; 2 3/5=√6,76

So your answer is √6,76

Find the area of the shaded region. Use 3.14 for pi.

Answers

Answer:

326

Step-by-step explanation:

First you find the area of the triangles. Since squares have equal sides we know that the triangle has a side of 20 and 12. We plug this information into the formula A=20x12/2 which equal 120 but since we have 2 triangles we multiply by 2 and get 240. Then we find the area of the square which is 400 when you multiply 20x20. Then you find the area of the circle which is 3.14x10^2 which equals 314. You add 240 and 400 to get 640. You subtract 460 from 314 and get 326.

Question 1 of 10
Which of these purchases is more likely to be paid for with a credit card?
A. Parking fee
B. Engine repair
C. Soda
D. Lotto ticket
SUBMIT
PLEASE HELP

Answers

B. Engine Repair is more likely to be paid for with a credit card. Option B is correct

It is to be determined Which of these purchases is more likely to be paid for with a credit card
Parking fee  B. Engine repair  C. Soda   D. Lotto ticket


What are credit cards and their uses?

A credit card is a kind of credit service, delivered by banks that permit customers to borrow money within a pre-approved credit limit. It allows customers to make purchase transactions on goods and services.


Since option A, C and D can be omitted because, on parking fee, lotto ticket and soda spending through credit card can be possible but more likely because the spending on these items are very less and service provider do not intentionally accept the credit card
But engine repair is most likely to be paid from the credit card, because the liquidity in the business is very much high comparatively.

Thus, B. Engine Repair is more likely to be paid for with a credit card. Option B is correct

Learn more about credit card here:
https://brainly.com/question/4149583

#SPJ2

I need help with this question

Answers

Since the triangle is cut in half, I’m guessing it’s 22.5

Translate each equation. Do not solve.
The quotient of a number increased by 4 and -3 is 15

Answers

Answer:

a /4+-3=15?

Step-by-step explanation:

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