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3 years ago

How to convert 9% to a decimal

1 answer:

5 0

First you would convert it to a fraction. 9/100

Once you do that you divide the numerator, which is 9 by the denominator, which is 100.

Then we get our answer, 0.09

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Work out the area of this circle

Svetach [21]

Answer:

A = 50.3 cm²

Step-by-step explanation:

Area of a circle = $\pi r^2$

Where r = 4 cm

A = π(4)²

A = 16(3.14)

A = 50.3 cm²

5 0

3 years ago

mariela is standing in a building and looking out a window at a tree. The tree is 20 feet away from Mariela, Mariela's line of s

PtichkaEL [24]

Answer: 30.01 feet.

Step-by-step explanation:

You need to remember this identity:

$tan\alpha=\frac{opposite}{adjacent}$

Observe the figure attached, where $h_t$ is the height in feet of the tree.

You need to calculate $h_1$ of the Triangle 1, where:

$\alpha= \alpha_1=42\°\\opposite=h_1\\adjacent=20$

Substitute values into $tan\alpha=\frac{opposite}{adjacent}$ and solve for $h_1$ :

$tan(42\°)=\frac{h_1}{20}\\\\h_1=20*tan(42\°)\\h_1=18$

Now you need to calculate $h_2$ of the Triangle 2, where:

$\alpha= \alpha_2=31\°\\opposite=h_2\\adjacent=20$

Substitute values into $tan\alpha=\frac{opposite}{adjacent}$ and solve for $h_2$ :

$tan(31\°)=\frac{h_2}{20}\\\\h_2=20*tan(31\°)\\h_2=12.01$

Then the height in feet of the tree is:

$h_t=h_1+h_2\\h_t=(18+12.01)ft\\h_t=30.01ft$

5 0

3 years ago

What is the slope of the line through (-9,-6) and (3,-9)

liq [111]

Answer:

the slope is -1/4 !

Step-by-step explanation:

remember to use x1 x2 y1 and y2 to fnd your answer

7 0

4 years ago

Graph. y=–14x+5 MATH

worty [1.4K]

Pretty sure its this..

5 0

4 years ago

How do I do this? Cause I don’t know how. Also please show work. Don’t only say the answer. Whoever shows the work and answer ge

Zarrin [17]

Total sq units of dotted rectangle = 3*5=15sq units

Shaded area= 15-(3*4*1/2+2*5*1/2)

=15-(6+5)

= 15-11

= 4 sq units

7 0

3 years ago