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3 years ago

What’s name of this?

Mathematics

1 answer:

Law Incorporation [45]3 years ago

7 0

Answer

D.pentagonal pyramid

Step-by-step explanation:

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-4=x/20-5 Solve for x

garik1379 [7]

Answer:

x = 20

Step-by-step explanation:

I'm no mathematician but...

- 4 = x / 20 - 5

If you move the five to the other side using addition you get:

1 = x / 20

Then multiply 20 on both sides

20 = x

6 0

3 years ago

The first figure contains 2 dots, the second 6 dots, and the third 12 dots. If the pattern continues, how many dots would the te

PIT_PIT [208]

Answer: 110

The 3 figures showed the same pattern by multiplying 2 consecutive whole numbers starting from one. Multiplying 1 by 2 gets 2, 2 by 3 gets 6, 3by 4 results to 12 and so on. If this pattern continues, then 4 will be multiplied by 5, 5 by 6, 6 by 7, 7 by 8, 8 by 9, 9 by 10, and lastly the 10th figure 10 by 11 which is equal to 110.

4 0

3 years ago

Betsy has to sell carnival tickets worth at least $60. The price of a child ticket is $5, and the price of an adult ticket is $8

SIZIF [17.4K]

Answer:

A) 5x + 8y $\geq$ 60

Step-by-step explanation:

"At least" translates to the inequality symbol $\geq$ or "greater than or equal to."

7 0

4 years ago

Read 2 more answers

Find the value of x.

Julli [10]

Answer:

$x=4$

Step-by-step explanation:

The two given triangles, triangle (BDE) and triangle (BAC) share the angle (<B) in common. Moreover, their bases, line (DE), and line (AC) are parallel, this means that through the corresponding angles postulate, angles (<BDE) and (<BAC) are congrunet. Moreover, angles (<BED) and (<BCA) are also congruent. Thus, triangles (BDE) and (BAC) are similar through angle-angle similarity.

The ratio between the corresponding sides of similar triangles is the same. Therefore, one can form the following equation,

$\frac{BD}{BA}=\frac{BE}{BC}$ .

Substitute,

$\frac{BD}{BD+DA}=\frac{BE}{BE+EC}\\\\\frac{x+2}{x+x+2}=\frac{3}{3+2}$

Simplify,

$\frac{x+2}{2x+2}=\frac{3}{5}$

Cross products,

$5(x+2)=3(2x+2)\\$

Simplify, distribute, multiply every term inside the parenthesis by the term outside of it,

$5x+10=6x+6$

Inverse operations,

$5x+10=6x+6\\\\10=x+6\\\\4=x$

5 0

3 years ago

Help please?

Simora [160]

Well, Mathematics can enhance your analytical and problem-solving skills, expands the mind to handle difficult or unfamiliar tasks, and also promotes cautious and careful thinking. Once you know what the words mean you'll be able to write different variable expressions. Like I said it enhances our minds and helps think and solve probelms.

5 0

2 years ago