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valkas [14]
3 years ago
12

Pleassseee helppppppppp

Mathematics
2 answers:
Nookie1986 [14]3 years ago
6 0

Answer:

4

Step-by-step explanation:

To find the area of a rectangle, you multiply adjacent side lengths, so in this case it would be (x + 3)(4x - 7) which expands to 4x^2 + 5x - 21.

lyudmila [28]3 years ago
4 0

The answer is 4. You have to distribute to get the answer.

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Brendan has 33 coins in his pocket, all of which are dimes and quarters. if the total value of his change is 615 cents, how many
Amanda [17]
If all were dimes, the value would be $3.30. Brendan has $2.85 more than that. Each quarter that replaces a dime increases the value by $0.15, so Brendan must have $2.85/$0.15 = 19 quarters.

Brendan has 14 dimes and 19 quarters.
6 0
3 years ago
20,10,5, ...<br> Find the 9th term.
iren [92.7K]

Answer:

0.078125.

Step-by-step explanation:

This is a geometric sequence with first term a1 = 20 and common ratio r = 10/20 = 5/10 = 0.5.

nth term = a1 r^(n -1) so here:

9th term = 20(0.5)^(9-1)

= 20(0.5)^8

= 0.078125.

6 0
2 years ago
Inferential statistical tests are used for all of the following except: a. describing a sample with means and standard deviation
Anika [276]

Answer:

a. Describing a sample with mean and standard deviation.

Step-by-step explanation:

Statistics can be categorized into descriptive and inferential statistics.

descriptive statistics uses data for descriptions through numerical analysis. It can be further divided in four parts.

  • Measures of Central Tendency ( Mean, Median, and Mode)
  • Measures of Frequency (Count, Percent, Frequency)
  • Measures of Position (Percentile Ranks, Quartile Ranks.)
  • Measures of Dispersion ( Range, Standard Deviation)

Inferential statistics however is based on assumptions and conclusions and generalizations drawn from samples or checks.

options b to d are all examples of inferential statistics while option a is an example of descriptive statistics.

8 0
3 years ago
A sail boat has a sail in the shape of an isosceles triangle. the base of the triangle is 16 feet in length. the height of the s
lapo4ka [179]

Answer:

160 feet^2

Step-by-step explanation:

base x high x 1/2

hope i'm right

3 0
3 years ago
Read 2 more answers
Lines a and b are parallel. What is the measuee of angle S?
WITCHER [35]

Answer:

The measure of angle s is 22°

Step-by-step explanation:

Given:

  • Horizontal lines A and B are parallel and are intersecting because a line is going through the both of them.
  • Top right angle of line A is labeled to be 158°, while the top left angle in line B is labeled S° indicating this variable is the missing degrees.

To find:

  • The angle of S, in degrees.

∠1 and 158° are both on a straight line and supplementary.

(Supplementary angles are those angles that sum up to 180 degrees. )

So solving,

⇒ ∠1=180°-158°=22°         ....> Angles ∠1 and S are interior angles

Due to lines A and B being parallel, all interior lines are equal.

As a result, the answer is therefore 22°.

8 0
1 year ago
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