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2 years ago

Write as an algebraic expression. a number squared

Mathematics

2 answers:

BaLLatris [955]2 years ago

5 0

Answer:

n^2

Step-by-step explanation:

' n ' is the number

n squared is n^2

zhannawk [14.2K]2 years ago

3 0

Answer:

9^2

Step-by-step explanation:

9^2 = 9 x 9 = 81

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Jim and his dad are bricklayers. Jim can lay bricks for a fireplace and chimney in 5 days. With his father's help he can build i

kati45 [8]

we are given

Jim can lay bricks for a fireplace and chimney in 5 days

Jim's 1 day work is

$=\frac{1}{5}$

we are given

With his father's help he can build it in 2 days

so, both can do same work in 2 days

so, both's 1 day work is

$=\frac{1}{2}$

Let's assume

his father to build it alone in x days

his father 1 day work is

$=\frac{1}{x}$

so, both's 1 days work is

$=\frac{1}{x}+\frac{1}{5}$

so, we can set it to 1/2

we get

$\frac{1}{2}=\frac{1}{x}+\frac{1}{5}$

now, we can solve for x

$\frac{1}{2}=\frac{5*1}{5*x}+\frac{1*x}{5*x}$

$\frac{1}{2}=\frac{5+x}{5x}$

now, we can cross multiply

$5x=2(5+x)$

$5x=10+2x$

$3x=10$

now, we can solve for x

$x=\frac{10}{3}$

so,

his father to build it alone is

$=\frac{10}{3}days$ ............Answer

8 0

3 years ago

Which statement best describes f(x)=

kotegsom [21]

Answer:

Step-by-step explanation:

the domain of this is x>=7

the range is x<=1

so 6 is in neither

8 0

3 years ago

Se generan ondas, introduciendo en agua el borde de una regla 15 veces en 3.0 segundos. Calcular: a) el periodo de las ondas b)

Ne4ueva [31]

Answer:

Ver explicacion

Step-by-step explanation:

La frecuencia de una onda se define como el número de ciclos completos que realiza una partícula en un segundo.

f = n / t = 15 ciclos / 3 segundos = 5 ciclos por segundo o Hertz

El período de una onda es el tiempo que tarda la onda en realizar una oscilación o ciclo completo.

T = t / n = 3/15 = 0,2 segundos

6 0

3 years ago

Calculate the future value of $500.20, earning interest at a rate of 3 7/8% that is compounded monthly for 4 years.

KATRIN_1 [288]

Answer:

584.03

Step-by-step explanation:

Given that principal amount = 500.20 dollars

Interest rate = 3 7/8% p.a.= 3100/8(12) per month

Period = 4 years = 4(12) = 48 months.

A= P(1+r/n)^nt

Here n = 12 t = 4 years.

Substitute to get

Future value = $500.20(1+\frac{32}{8(1200)} )^{48}$

=584.03

6 0

4 years ago

Read 2 more answers

Find the value of x. A.4 B.5 C.6 D.9

ra1l [238]

The equation should be...

a^2 + b^2 = c^2

x^2 + (x+3)^2 =10.81665383^2

When you plug it in...

6^2 + (6+3)^2 = 117

6^2 + (9)^2 = 117

36 + 81= 117

6 0

3 years ago