All categories

3 years ago

What are the next three terms in the sequence? -3, 6, 15, 24

Mathematics

1 answer:

bearhunter [10]3 years ago

7 0

Its adding 9 every time.
-3, 6, 15, 24, 33, 42, 51, 60

You might be interested in

HELP PLEASE I KEEP ASKING AND NO ONE ACTUALLY HELPS

coldgirl [10]

Answer: X = 44.4 degrees

Step-by-step explanation: The figure given is a right angled triangle with two sides given as well as one angle unknown.

Angle X, which is the unknown, is the reference angle in this question. So we have an opposite which is the side facing the reference angle (line 7 units) and we have an hypotenuse which is the side facing the right angle (line 10). Having an opposite and an hypotenuse, we can use the trigonometric ratio of sine.

SinX = opposite/hypotenuse

SinX = 7/10

SinX = 0.7000

Looking up a table of values or checking the calculator, 0.7000 under sine of angles gives 44.4270

Therefore angle X is approximately 44.4 degrees (approximated to the nearest tenth)

3 0

3 years ago

52% of ______ days is 13 days.

abruzzese [7]

'of' in mathematics means multiplication
'is' in mathematics means equal

52% * x = 13

52/100 * x = 13

0.52x = 13

x = 13/0.52

x = 25

52% of 25 days is 13 days.

8 0

3 years ago

See attachment. what is the length of x in the diagram below?<br> answer in rational form

Norma-Jean [14]

Hi there!
Th' following triangle is divided into 2 sub-triangles!

• In 1ˢᵗ triangle :-

tan 45° = $\dfrac {b}{p}$

⇒ 1 = $\dfrac {5}{p}$

⇒ $p$ = 5

• In 2ⁿᵈ triangle :-

cos 30° = $\dfrac {p}{h}$

⇒ $\dfrac {1}{2}$ = $\dfrac {5}{x}$

⇒ $x$ = 2 × 5

⇒ $x$ = 10

Hence,
Th required answer is 10 units.

~ Hope it helps!

6 0

3 years ago

What is the missing reason in steps 7 and 8 of the proof? Given: ∆ABC with AB = c, BC = a, AC = b Prove: = = Statement Reason 1.

vodomira [7]

Answer:

its d b/sinB=c/sinC

Step-by-step explanation: trust me

8 0

3 years ago

María regala a su padre un best seller por su cumpleaños. Elige la encuadernación de tapas duras que tiene forma de prisma recta

iris [78.8K]

Answer:

<h2>María used only 792 square centimeters to cover the best seller.</h2>

Step-by-step explanation:

The volume of the best seller is about a rectangular prism, which is

$V= w \times l \times h$

Where $w$ is width, $l$ is length and $h$ is height.

In this case, we have

$w=12 \ cm\\l= 18 \ cm\\h= 6 \ cm$

Replacing values in the formula, we have

$V=12cm \times 18cm \times 6cm=1,296cm^{3}$

Now, according to the problem, 10% of paper covers the book, that means we need to find the suface area and then find the 90% of the paper missing. The formula for surface area is

$S=2wl+2lh+2hw$

Replacing values, we have

$S=2(12)(18)+2(18)(6)+2(6)(12)=432+216+144=792cm^{2}$

If 792 square centimeters is 10% of the total paper, then

$x=100\%\frac{792cm^{2} }{10\%} =7,920cm^{2}$

Therefore, there is 7,920 square centimeters of papers, but María used only 792 square centimeters to cover the best seller.

4 0

3 years ago