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Mama L [17]
4 years ago
10

Twenty-one less than a number is seven. What is the number? 3 14. 28 147

Mathematics
2 answers:
maks197457 [2]4 years ago
4 0

Answer:

28

Step-by-step explanation:

add 7 + 21

Gnom [1K]4 years ago
4 0

Answer: the answer will be 28

Step-by-step explanation:

First you have to add 21+7 which equals to 28 and that's how I got my answer.

Please mark me brainiiest.

You might be interested in
Scenario
Elena-2011 [213]

The function that gives the shares received by a post whereby each friend

shares the post a constant multiple of times each day is exponential.

<h3>Responses;</h3>
  • Ben's social media post: <u>2 × 3ⁿ</u>
  • Carter's social media post: <u>10 × 2ⁿ</u>

<h3>Methods by which the above expressions are obtained:</h3><h3 /><h3>Ben's social media posts;</h3><h3 /><h3>Given:</h3>

The given table of values for Ben's social media post is presented as follows;

\begin{tabular}{|c|c|}Day&Number of shares\\0&2\\1&6\\2&18\end{array}\right]

<h3>Solution:</h3>

The number of shares triples everyday, therefore, the number of shares form a geometric progression, with a common ratio of r = 3, and a first term of <em>a</em> = 2

The function for the number of shares of Ben's post is, tₙ  = a·rⁿ

Which gives;

  • Ben's social media post shares on day <u><em>tₙ</em></u><u> = 2·3ⁿ</u>

<h3>Carter's social media posts;</h3><h3 /><h3>Given;</h3>

Number of friends Carter shared his post with = 10 friends

Number of people each of the 10 friends shared with each day = 2 people

<h3>Solution;</h3>

The exponential function for number of shares received by Carter is therefore, <u>tₙ = </u><u>10×2ⁿ</u>

  • Carter's social media post shares on day <em>n</em>: <u>10 × 2ⁿ</u>

Learn more about exponential functions here:

brainly.com/question/1530446

5 0
3 years ago
The measures of ∠1, ∠2, and ∠3 are 40%, 12.5%, and 25% of the sum of the angle measures of the quadrilateral. Find the value of
sweet [91]

The value of x is 81

Step-by-step explanation:

The sum of the interior angles of any quadrilateral is 360°

  • The measure of ∠1 is 40% of the sum of the angle measures of the quadrilateral
  • The measure of ∠2 is 12.5% of the sum of the angle measures of the quadrilateral
  • The measure of ∠3 is 25% of the sum of the angle measures of the quadrilateral
  • We need to find the value of x

∵ The figure have 4 sides

∴ The figure is a quadrilateral

∵ The sum of the measures of the interior angles of a

    quadrilateral is 360°

- Add the four angles and equate the sum by 360

∴ m∠1 + m∠2 + m∠3 + x = 360

∵ m∠1 = 40% of the sum of the angle measures of the quadrilateral

∴ m∠1 = 40% × 360 = \frac{40}{100} × 360 = 144°

∵ m∠2 = 12.5% of the sum of the angle measures of the quadrilateral

∴ m∠2 = 12.5% × 360 = \frac{12.5}{100} × 360 = 45°

∵ m∠3 = 25% of the sum of the angle measures of the quadrilateral

∴ m∠3 = 25% × 360 = \frac{25}{100} × 360 = 90°

- Substitute these values in the equation above

∴ 144 + 45 + 90 + x = 360

- Add the like terms in the left hand side

∴ 279 + x = 360

- Subtract 279 from both sides

∴ x = 81°

The value of x is 81

Learn more:

You can learn more about the polygons in brainly.com/question/6281564

#LearnwithBrainly

5 0
3 years ago
Emir is standing in a treehouse and looking down at a swingset in the yard next door. The angle of depression from Emir's eyelin
erma4kov [3.2K]

Answer:

15 feets

Step-by-step explanation:

From. Trigonometric relation :

Tanθ = opposite / Adjacent

Tan 33.69 = 10 / x

0.6666649 = 10 / x

x = 10 / 0.6666649

= 15 feets

Hence, base of tree to swingset is 15 feets

3 0
3 years ago
Read 2 more answers
Find the eleventh term of the last term of A.P.<br> 27,23,19,.....-65.
myrzilka [38]
The term to term rule is to subtract 4

Term 1 = 27
Term 2 = 27 - 4 = 23
Term 3 = 23 - 4 = 19
Term 4 = 19 - 4 = 15
Term 5 = 15 - 4 = 11
Term 6 = 11 - 4 = 9
Term 7 = 9 - 4 = 5
Term 8 = 5 - 4 = 1
Term 9 = 1 - 4 = -3
Term 10 = -3 - 4 = -7
Term 11 = -7 - 4 = -11

The eleventh term = -11
3 0
4 years ago
If the vertex of a parabola is (0, 3), what is the axis of symmetry
GREYUIT [131]

Answer:

The equation of the axis of symmetry for this parabola is x = 0.

Step-by-step explanation:

For parabola's, it's axis of symmetry always goes through the vertex of the parabola. In other words, the axis of symmetry is vertical line that goes through the x-coordinate of the vertex.

Now, the vertex is given as (0,3) which is at x = 0, y = 3.

Thus, the vertical line that goes through the x-coordinate of the vertex will be x = 0

Thus, the equation of the axis of symmetry for this parabola is x = 0.

7 0
3 years ago
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