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2 years ago

I need help with this pls!

Mathematics

2 answers:

choli [55]2 years ago

8 0

Answer:

Step-by-step explanation:

Janita should not but the table. If the table was 6 feet wide, the widest it can be, the area would be 45 square feet. If the table is 46 7/8 square feet, the width is greater than 6 ft.

aleksklad [387]2 years ago

5 0

Answer:

46 7/8 is roughly 9 feet by 5 feet, so she should not purchase the table because the length isn't of the table is too wide.

Step-by-step explanation:

You might be interested in

Habiendose organizado un bingo se ha recaudado $1900. Por la entrada de hombres $15 y mujeres $10 y se ha reportado una asistenc

aev [14]

Answer:

The number of men was $80$

The number of women was $70$

Step-by-step explanation:

The question in English is

Having organized a bingo has raised $1900. For the entrance of men $15 and women $10 and an attendance of 150 people has been reported. Determine the number of men and the number of women who participated in the bingo.

Let

x----> the number of men

y----> the number of women

we know that

$x+y=150$

$x=150-y$ -----> equation A

$15x+10y=1,900$ -----> equation B

substitute equation A in equation B and solve for y

$15(150-y)+10y=1,900$

$2,250-15y+10y=1,900$

$15y-10y=2,250-1,900$

$5y=350$

$y=70$

Find the value of x

$x=150-70=80$

therefore

The number of men was $80$

The number of women was $70$

3 0

3 years ago

Which relationship describes angles 1 and 2? Select each correct answer. A)adjacent angles

Talja [164]

Hey there!

As you can see, they are lying on the same line.

When two angles are on the same straight line, they are adjacent.

Adjacent angles are supplmentary.

Adjacent angles= 180 degrees Supplementary= 180 degrees

They are choices "A" and "B".

I hope this helps!
~kaikers

6 0

3 years ago

If some one could help me with these three questions I will be stoked!!!please please help me my teacher didn’t walk us through

salantis [7]

17) replace the given number for "x" and evaluate

a) x² + 2x + 1 ; when x = 3

3² + 2(3) + 1

= 9 + 6 + 1

= 16

b) x² + 2x + 1 ; when x = -4

(-4)² + 2(-4) + 1

= 16 - 8 + 1

= 9

c) x² + 2x + 1 ; when x = 3

(-22.872)² + 2(-22.872) + 1

= 523.128384 - 45.744 + 1

= 478.384384

18) The dependent variable is affected by the other variable and is the "output" The independent variable is the input.

a) y = 3x - 5; "x" is the independent variable

b) the time of day is the independent variable (you would input the time of day to calculate the temperature).

19) Let the x-axis represent the length of the lumber cut off and the y-axis represent the length of the lumber remaining.

5 0

3 years ago

A line tangent to the curve f(x)=1/(2^2x) at the point (a, f(a)) has a slope of -1. What is the x-intercept of this tangent?

kirza4 [7]

Answer:

x-intercept = 0.956

Step-by-step explanation:

You have the function f(x) given by:

$f(x)=\frac{1}{2^{2x}}$ (1)

Furthermore you have that at the point (a,f(a)) the tangent line to that point has a slope of -1.

You first derivative the function f(x):

$\frac{df}{dx}=\frac{d}{dx}[\frac{1}{2^{2x}}]$ (2)

To solve this derivative you use the following derivative formula:

$\frac{d}{dx}b^u=b^ulnb\frac{du}{dx}$

For the derivative in (2) you have that b=2 and u=2x. You use the last expression in (2) and you obtain:

$\frac{d}{dx}[2^{-2x}]=2^{-2x}(ln2)(-2)$

You equal the last result to the value of the slope of the tangent line, because the derivative of a function is also its slope.

$-2(ln2)2^{-2x}=-1$

Next, from the last equation you can calculate the value of "a", by doing x=a. Furhtermore, by applying properties of logarithms you obtain:

$-2(ln2)2^{-2a}=-1 \\\\2^{2a}=2(ln2)=1.386\\\\log_22^{2a}=log_2(1.386)\\\\2a=\frac{log(1.386)}{log(2)}\\\\a=0.235$

With this value you calculate f(a):

$f(a)=\frac{1}{2^{2(0.235)}}=0.721$

Next, you use the general equation of line:

$y-y_o=m(x-x_o)$

for xo = a = 0.235 and yo = f(a) = 0.721:

$y-0.721=(-1)(x-0.235)\\\\y=-x+0.956$

The last is the equation of the tangent line at the point (a,f(a)).

Finally, to find the x-intercept you equal the function y to zero and calculate x:

$0=-x+0.956\\\\x=0.956$

hence, the x-intercept of the tangent line is 0.956

5 0

2 years ago

There are 12 big fish for ever 16 small fish. That means that there are____ big fish for every 4 small fish. How many?

Vaselesa [24]

Answer:

3 big fish for every 4 small fish

Step-by-step explanation:

Hope this helps and Happy Holidays!

7 0

2 years ago