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3 years ago

Carpet costs 15 per square yard. How much will it cost to carpet a room that is 180 square feet?

Mathematics

2 answers:

Luba_88 [7]3 years ago

7 0

$240 have a great day

Vadim26 [7]3 years ago

3 0

Answer:

it is 300

Step-by-step explanation:

180 square feet

3 feet = 1 yard

9 square feet = 1 square yard

180/9 = 20 square yards

20 x 15 = $300

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The population of a city (in millions) at time t (in years) is P(t)=2.6 e 0.005t , where t=0 is the year 2000. When will the pop

lora16 [44]

Answer:

year 2139

Step-by-step explanation:

The population will double when the factor e^(.005t) is 2.

e^(.005t) = 2

.005t = ln(2)

t = ln(2)/0.005 = 138.6

The population will be double its size at t=0 when t=138.6. That is the population will be about 5.2 million in the year 2139.

7 0

3 years ago

I need help on this question anyone know this ?

WITCHER [35]

Answer:

y = 4 $(2)^{x}$

Step-by-step explanation:

An exponential function in standard form is

y = a $b^{x}$

Use ordered pairs from the table to find a and b

Using (0, 4), then

4 = a $b^{0}$ ( note that $b^{0}$ = 1 ), so

a = 4, then

y = 4 $b^{x}$

Using (1, 8)

8 = 4 $b^{1}$ = 4b ( divide both sides by 4 )

b = 2

y = 4 $(2)^{x}$ ← represents the values in the table

7 0

3 years ago

*click image*

lyudmila [28]

Answer:

x=-26

Step-by-step explanation:

Subtract 45 from both sides.

-85-45=5x

Simplify -85-45 to -130

-130=5x

Divide both sides by 5.

-130/5=x

Simplify 130/5 to 26

-26=x

6 0

3 years ago

Hey can you please help? I am struggling a lot don’t know how to solve this

Ket [755]

Answer:

64.8

Step-by-step explanation:

Pythagoreon Theroem

a^2 + b^2 = c^2 in this situation it would actually be the opposite, seeing where the "x" is (on a leg) c^2 - b^2 = a^2. First take the square of 67 and 17

67 squared is 4489 and 17 squared is 289 then subtract both results

4489-289 = 4200 take the square root of this number

64.8074 (Round to the tenths 64.8)

8 0

2 years ago

Can someone please help me solve these two problems and explain them to me? About the one with proportions though... I've always

NeTakaya

Answers:

A) $-\frac{11}{4}$

C) $m_{1}=\frac{Fr^{2}}{G m_{2}}$

Step-by-step explanation:

We have the followig equation:

$\frac{x-1}{3}-\frac{x+4}{5}=\frac{4x-1}{8}$

Calculating the least common multiple (l.c.m) in the denominator in the left side of the equation, being l.c.m=15:

$\frac{5(x-1)-3(x+4)}{15}=\frac{4x-1}{8}$

Solving for the left part of the equation:

$\frac{2x-17}{15}=\frac{4x-1}{8}$

Operating with cross product:

$8(2x-17)=15(4x-1)$

Applying the distributive property:

$16x-136=60x-15$

Isolating $x$ :

$x=-\frac{121}{44}$

Dividing numerator and denominator by 11:

$x=-\frac{11}{4}$ Hence, the correct option is A

We have the followig equation:

$F=\frac{G m_{1} m_{2}}{r^{2}}$

Operating with cross product:

$Fr^{2}=G m_{1} m_{2}$

Isolating $m_{1}$ :

$m_{1}=\frac{Fr^{2}}{G m_{2}}$ Hence, the correct option is C

5 0

3 years ago