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dolphi86 [110]
3 years ago
10

Decrease 30g by 80%​

Mathematics
2 answers:
Bumek [7]3 years ago
4 0

Answer: 6g

Step-by-step explanation:

80% of 30 g= 80/100*30

= 8*3

=24g

(30-24g)

= 6g

asambeis [7]3 years ago
4 0

Answer:

6g

Step-by-step explanation:

80% of 30 g = 80/100*30

= 8*3

= 24g

(30-24)g

= 6g

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I need help on this please!!<br> #26
Mashutka [201]

Answer:

Area = 240

Step-by-step explanation:

The roof is 4 Isosceles triangles as two sides are the same and the base is different.  The equation for area of an isosceles triangle is area = (1/2) · b · h.  

      Starting the equation, we know the height = 10 based on the graphic, but we need solve for the base using the information provided in the problem 25.  

      If the square gazebo is 48 ft around, then perimeter = 48.  To find one side of the "SQUARE" gazebo, divide the perimeter by 4 to find one side having a length/base of 12.  

      We can assume that the base of the gazebo is the same length as the base of the roof, so the base is 12 as well.  

Finishing the formula we have:

Area of 1 side of gazebo roof= (1/2) * b * h = (1/2) * 12 * 10 = 60  

There are 4 sides to the roof, so multiply the Area of the one side by 4 to find the final result.

Area of full Gazebo roof = 60 * 4 = 240

6 0
2 years ago
A tree is 25 7/12 feet high. Richard cuts off the top 8 7/8 feet. How tall is the tree now?
siniylev [52]

Answer:

The tree is now 16 17/24 feet tall

5 0
3 years ago
Read 2 more answers
How to find matrics M
makkiz [27]

\left[\begin{array}{ccc}9&7\\-4&2\end{array}\right] -4M=\left[\begin{array}{ccc}-3&3\\4&-18\end{array}\right]\qquad(*) \\\\M=\left[\begin{array}{ccc}a&b\\c&d\end{array}\right]\to4M=\left[\begin{array}{ccc}4a&4b\\4c&4d\end{array}\right]

(*)\qquad\left[\begin{array}{ccc}9&7\\-4&2\end{array}\right] -\left[\begin{array}{ccc}4a&4b\\4c&4d\end{array}\right]=\left[\begin{array}{ccc}-3&3\\4&-18\end{array}\right]\\\\\left[\begin{array}{ccc}9-4a&7-4b\\-4-4c&2-4d\end{array}\right]=\left[\begin{array}{ccc}-3&3\\4&-18\end{array}\right]\\.\qquad\qquad\qquad\qquad\ \ \ \Downarrow\\(_{11})\qquad9-4a=-3\ \ \ |-9\\-4a=-12\ \ \ \ |:(-4)\\a=3\\\\(_{12})\qquad7-4b=3\ \ \ \ |-7\\-4b=-4\ \ \ \ |:(-4)\\b=1

(_{21})\qquad-4-4c=4\ \ \ \ |+4\\-4c=8\ \ \ \ |:(-4)\\c=-2\\\\(_{22})\qquad2-4d=-18\ \ \ \ |-2\\-4d=-20\ \ \ \ \ |:(-4)\\d=5\\\\Answer:\ A.\ M=\left[\begin{array}{ccc}3&1\\-2&5\end{array}\right]

3 0
3 years ago
A rectangular container measuring 20 inches long by 16 inches wide by 12 inches tall is filled to its brim with water. If 850 cu
makkiz [27]

The new height of the water is = 9.34 inches (approx)

Step-by-step explanation:

Given, a rectangular container measuring 20 inches long by 16 inches wide by 12 inches tall is filled to its brim with water.

Let the new height of water level be x inches.

The volume of the container = (20×16×12) cubic inches

                                               =3840  cubic inches

According to the problem,

3840 - (20×16×x) = 850

⇔3840 -320x = 850

⇔-320x =850-3840

⇔-320 x = -2990

\Leftrightarrow x =\frac{2990}{320}

⇔x = 9.34 inches

The new height of the water is = 9.34 inches (approx)

5 0
3 years ago
Which integer is 30 closest to
vesna_86 [32]

Answer:

7,4,15,6

Step-by-step explanation:

7,4,15,6

4 0
3 years ago
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