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7nadin3 [17]
3 years ago
13

Help please!! Solve for y.

Mathematics
1 answer:
Nimfa-mama [501]3 years ago
7 0

Answer:

y = 3\sqrt{7}

Step-by-step explanation:

The 2 right triangles inside the right triangle are similar, then ratios of corresponding sides are equal, that is

\frac{y}{9} = \frac{7}{y} ( cross- multiply )

y² = 63 ( take the square root of both sides )

y = \sqrt{63} = 3\sqrt{7}

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Can someone answer #10 please?
n200080 [17]
Not sure of the question...1 missing vs 8 found
or 1 missing vs 9 piece puzzle

8 0
3 years ago
Solve for 2:<br> 2x + 62°<br> 52 + 38°<br> 2 =
Paladinen [302]

Answer:

The answer is 8°

Step-by-step explanation:

2x + 62° = 5x + 38°

2x – 2x + 62° – 38° = 5x – 2x + 38° – 38°

24° = 3x

3x = 24°

3x/3 = 24°/3

x = 8°

Thus, The value of x is 8°

<u>-TheUnknownScientist 72</u>

8 0
2 years ago
Need help!!!!!! I'm horrible at math!​
Nastasia [14]

Answer:

b = 6

Step-by-step explanation:

Cross multiply: 39(b) = (26)(9)

39b = 234

Divide both sides by 39

b = 6

8 0
3 years ago
Read 2 more answers
Sketch the region enclosed by y=3x and y=x^2 . Then find the area of the region.
kolezko [41]

Answer:

A=4.5u^2

Step-by-step explanation:

The integral of a function gives you the area under the curve, the subtraction of one of the areas from the other will give you the area in between.

The limits of integration are the points where the curves intersect each other(take the curves has a system of equation and solve for x and y):

y=3x, y=x^2\\3x=x^2\\x^2-3x=0\\x(x-3)=0\\x_1=0\\x-3=0\\x_2=3

y_1=3x_1=3(0)=0\\y_2=3x_2=3(3)=9

The integral will be the subtraction of the curve y=3x and y=x^2  (In the graph you can see y=3x is the upper curve):

\int\limits^3_0 {3x-x^2} \, dx =\left\frac{3x^2}{2}-\frac{x^3}{3}\right|^3_0=\frac{3(3)^2}{2}-\frac{(3)^3}{3}-\left(\frac{3(0)^2}{2}-\frac{(0)^3}{3}\right)\\\int\limits^3_0 {3x-x^2} \, dx =\frac{27}{2}-\frac{27}{3} =13.5-9=4.5u^2

6 0
3 years ago
The volume of the oblique cylinder is 5,588 mm3.
9966 [12]
14.7 mm is the height.

Use the volume equation for a cylinder which is
volume=(PI/4)*(diameter^2)*(height)

And you have volume, and diameter (which is just radius times 2) so solve for height.

5588=(PI/4)*(22^2)*Height

Height = 14.7 mm
5 0
3 years ago
Read 2 more answers
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