Help please! I have choral practice...

Answers

Answer 1

Answer: This polygon is composed of a right triangle and a parallelogram.

The area of right angle :
$A_\Delta=(1)/(2)\cdot15\cdot8=(1)/(2)\cdot120=\boxed{60\ (cm^2)}$

The area of the parallelogram:
$A_P=15\cdot(13-8)=15\cdot5=\boxed{75\ (cm^2)}$

The area of the polygon is equal: $A=A_\Delta+A_P$

Therefore, the answer is:
$\boxed{\boxed{A=60\ cm^2+75\ cm^2=135\ cm^2}}$

Answer 2

Answer:
Slice the picture in half, across the middle dotted line.

The top half is a triangle. Its base is 15cm and its height is 8cm .
Area of a triangle is (1/2) (base x height) = (1/2) (120cm²) = 60 cm².

The bottom half is a parallelogram. Its base is 15cm and its height is 5cm.
Area of a parallelogram is (base x height) = (15cm x 5cm) = 75 cm².

Add the two pieces together. (60cm²) + (75 cm²) = 135 cm²

Breathe from the diaphragm, enunciate, and watch the conductor.

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Alba needed to know about how much the sum of 19.6, 23.8, and 38.4 is. She correctly rounded each of these numbers to the nearest whole number. What three numbers did she use? *A 19, 23, 23 B 19, 24, 38 C 20, 24, 38 D 20, 24, 39
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98 is 35% of what number

Find the solution 2x+5y=12

Answers

You can draw a graph of that equation. When you do that, the graph is a
straight line, and EVERY POINT on the line is a solution of the equation.
There are an infinite number of them.

You can find as many of them as you want. Pick any number you like
out of the air, and call it 'x'. Now find the number that's 2.4 more than
negative 0.4 of 'x' and that's 'y'. Together they form one solution to
the equation.

A storage container has a shape of a rectangular prism. it’s height is 8 feet. it’s length is two times it’s width. the volume is 400 cubic feet. find the length and width of the container. please help

Answers

Answer:

length = 10

width = 5

Step-by-step explanation:

So first you divide 8 from 400 which equals 50.

Then so the length and the width has to equal 50 when they are times-ed, and the length is double the width.

So the length is 10

and the width is 5

Final answer:

Given that the volume of a rectangular prism is length x width x height, this problem can be solved by setting up the equation 2w * w * 8 = 400, where w is the width and 2w is the length. Solving this equation, we find that the width is 5 feet and the length is 10 feet.

Explanation:

In mathematics, the volume of a rectangular prism is given by the formula length x width x height. We are given that the volume of the storage container is 400 cubic feet, its height is 8 feet, and the length is twice the width. Let us denote the width as w, then the length is 2w.

From the given volume formula, we have:

Length x Width x Height = Volume

Substituting the values, we get:

2w * w * 8 = 400

Solving this equation, we find:

w^2 = 25

Taking the square root of both sides, we get:

w = 5

Substituting w=5 into 2w, we find the length:

Length = 2*5 = 10

So the width of the container is 5 feet and the length is 10 feet.

Learn more about Volume of a Rectangular Prism here:

brainly.com/question/31393965

Why must the value of the sine ratio for an acute angleof a right triangle must always be a positive value less
than 1.

Answers

Answer:

Because of the range of the sine function.

Step-by-step explanation:

The reason why the value of the sine ratio for an acute angle

of a right triangle must always be a positive value less

than 1 has to do with the the range of the sine function.

The range of the sine function is

$- 1 \leqslant y \leqslant 1$

But in the first quadrant all y-values are positive and acute angles are less than 90°.

Therefore the range will now be 0≤y<1 for acute angles.

Sample Response: The sine ratio is the length of the side opposite a given acute angle divided by the length of the hypotenuse. Because the hypotenuse is the side opposite the largest angle, the 90° angle, it has to be the longest side. Thus, the ratio will have a denominator that is larger than the numerator, and the ratio will be less than 1.

~Notify me if you have questions~

Have a nice day, and I hope this helps!

-- XxFTSxX

Determine which equation has the same solutions as the given equation. x2 − 10x − 11 = 0 A. (x − 5)2 = 36 B. (x − 10)2 = 21 C. (x − 10)2 = 36 D. (x − 5)2 = 21

Answers

Answer:

A. (x - 5)² = 36

Step-by-step explanation:

Step 1: Isolate x

x² - 10x = 11

Step 2: Complete the Square

x² - 10x + 25 = 11 + 25

(x - 5)² = 36

And we have our answer!

A recipe for dessert calls for 2/4 cup of powdered sugar and 1/6 cup of brown sugar . What is the total amount of sugar needed for the recipe

Answers

They used 2/3 cup of sugar mark brainest

The answer is 2/3. Because I added 2/4 by 1/6 to get that answer. Hopefully this helped.

7 1/2 times 0.50 PLZZZZZ help

Answers

3.75 You would multiply 7.5(for 7 1/2) X 0.50=3.75. Hope this helps.

0.50=1/2 And 7 1/2=15/2
Multiply numerators and denominators. 15*1=15
2*2=4
You get 15/4. This is equivalent to 3 3/4 and is also equivalent to 3.75

Hope this helps!

-Kibeye :)