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4 years ago

How to use the table to solve these problems plea

Mathematics

1 answer:

jolli1 [7]4 years ago

4 0

1) count and mark so that you will have 50 blocks to work with. Shade 19 of those blocks. This will represent your fraction. To get the % divide 19/50= 0.38 move the decimal to the right two places and you will have 38%.

2) do the same count and mark off 20 blocks and shade 13. This represents the fraction. Divide 13/20 = 0.65. Move the decimal two places to the right and you will have 65%.

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What are the x- and y-intercepts of the rainbow? Explain what each intercept represents ( parabola y=-x2+36

KengaRu [80]

Answer:

Step-by-step explanation:

$y=-x^{2} +36$

can be factored out as (-x-6)(x-6)

x-intercepts are: +6 and -6

represents the two ends of the rainbow

y-intercept: y=36

represents the highest point of the rainbow

4 0

2 years ago

Can anyone help me? i dont get it

algol13

Because t is the number of weeks, replace t with 6 in the equation and solve for s.

s = -0.25(6) +4

s = -1.5 +4

s = 2.5

Now replace t with multiples of 6, use 12 and 18:

s =-.25(12) +4 = 1

s-0.25(18) +4 = -0.5

now fins the difference between the time frames:

2.5 - 1 = 1.5

1 - 0.5 = 1.5

The ice melts 1.5 meters every 6 weeks.

5 0

3 years ago

The radius of a circle is 8 feet. What is the area of sector bounded by a 90° arc?

Lera25 [3.4K]

Since 90 degree is 1/4 of a circle, the area will be 1/4 th area of the full circle.

The radius is given by, r = 8 ft, therefore, the area of the full circle is,

$\begin{gathered} A=\pi\times r^2 \\ A=3.14\times8^2=200.96ft^2 \end{gathered}$

Therefore, the area of the sector is,

$A^{\prime}=\frac{1}{4}\times200.96ft^2=50.24ft^2$ $\begin{gathered} A^{\prime}=\frac{\theta}{360}\times\pi\times r^2 \\ \text{ =}\frac{\text{90}}{360}\times\pi\times8^2 \\ \text{ =}\frac{1}{4}\pi\times64=16\pi \end{gathered}$

4 0

2 years ago

What is the inverse of x^2-4x+5

lisabon 2012 [21]

we are given

$f(x)=x^2-4x+5$

Since, we have to find inverse of this function

step-1: we set f(x)=y

$y=x^2-4x+5$

step-2: switch x and y

$x=y^2-4y+5$

step-3: Solve for y

$y^2-4y+(5-x)=0$

now, we can use quadratic formula

$y=\frac{4+\sqrt{4^2-4(5-x)} }{2}$

$f^{-1}(x)=\sqrt{x-1}+2$

$f^{-1}(x)=-\sqrt{x-1}+2$ ..............Answer

6 0

3 years ago

X-2y+z=2<br> bx+ay=3<br> -2y+z=-4<br> Choose appropriate values for a and b

jonny [76]

Answer:

Attached

Step-by-step explanation:

Just for your reference, this question will get unlimited number of solutions, attached is a few examples I calculated from Excel. Have fun to pick one or create one to be your favorite.

8 0

2 years ago