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2 years ago

Qué número entero está entre -2 y 5

Mathematics

1 answer:

cestrela7 [59]2 years ago

4 0

Answer:

1.5

Step-by-step explanation:

-2,-1,0,1,2,3,4,5

Le quitamos un número hasta llegar al medio. En el medio hay dos números, el 1 y el 2. Pues tenemos que buscar el promedio de los dos (1+2=3 y 3÷2=1.5).

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The second term in a geometric sequence is 20. The fourth term in the same sequence is 45/4 or 11.25. What is the common ratio i

kati45 [8]

$\bf \begin{array}{ccll}
n&term&value\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
2&a_2&20\\
3&a_3&20r\\
4&a_4&20rr\\
&&20r^2\\\\
&&\frac{45}{4}
\end{array}\implies \stackrel{4^{th}~term}{20r^2=\cfrac{45}{4}}\implies r^2=\cfrac{45}{80}
\\\\\\
r^2=\stackrel{simplified}{\cfrac{9}{16}}\implies r=\sqrt{\cfrac{9}{16}}\implies r=\cfrac{\sqrt{9}}{\sqrt{16}}\implies r=\cfrac{3}{4}$

4 0

3 years ago

The difference of a number and 12 is 30.determin the number

ElenaW [278]

42 because 42-12=30 hope dis helped my guy

3 0

2 years ago

Read 2 more answers

Solve 6.1−0.3≥c+1. <br> please help me

horsena [70]

Answer:

c≤ 24/25

Step-by-step explanation:

"0.3" was replaced by "(3/10)". 2 more similar replacement(s). Simplify 3/10

61 3

(—— - ——) - (c + 1) ≥ 0 then simplify 61/10

10 10

3.1 Adding fractions which have a common denominator

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

61 - (3) 29

———————— = ——

10 5

—— - (c + 1) ≥ 0

4.1 Subtracting a whole from a fraction

Rewrite the whole as a fraction using 5 as the denominator :

c + 1 (c + 1) • 5

c + 1 = ————— = ———————————

1 5

Equivalent fraction : The fraction thus generated looks different but has the same value as the whole

Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator

Rewrite the whole as a fraction using 5 as the denominator :

c + 1 (c + 1) • 5

c + 1 = ————— = ———————————

1 5

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

29 - ((c+1) • 5) 24 - 5c

———————————————— = ———————

5 5

24 - 5c

——————— ≥ 0

Multiply both sides by 5

5.2 Multiply both sides by (-1)

Flip the inequality sign since you are multiplying by a negative number

5c-24 ≤ 0

5.3 Divide both sides by 5

c-(24/5) ≤ 0

5.4 Add 24/5 to both sides

c ≤ 24/5

8 0

2 years ago

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Select the best method of finding an accurate solution to a system of linear equations.

professor190 [17]

Answer:

iii) Use algebraic methods

Step-by-step explanation:

There are various method of finding an accurate solution to a system of linear equations.

They are i) graphing method: ii) algebraic method: iii) Matrices method:

iv) determinant method: v) guess method vi) Cramer's rule etc

Guess and check is not reliable because guess is possible only for integers or numbers with 1 or 2 decimals. SOmetimes guess may give unreliable results. And every time after the guess, checking and verifying will be time consuming and laborious

Graphing the lines may be accurate but writing tables for each line, choosing scales and drawing lines to find points of intersection may be time consuming.

Algebraic methods using are easy to understand, reliable, and less time consuming but 100% accuracy. There are a number of ways in algebraic method also such as substitution, elimination or cross multiplication, etc

Thus option iii) is right

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3 years ago

What percent is 50 equals 35?

Natasha2012 [34]

$\frac{x}{100} \times 50 = 35\\\\\frac{x}{2} = 35\\\\\boxed{x = 70}$

70 percent of 50 equals 35

3 0

3 years ago

Qué número entero está entre -2 y 5​

Qué número entero está entre -2 y 5