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igomit [66]
2 years ago
13

Please help me, What is 640.31 written in expanded form?

Mathematics
2 answers:
Sophie [7]2 years ago
5 0
The top right one. 600+40+3/10+1/100
Stels [109]2 years ago
5 0

Answer:

640.31= 600+40+ 3/10 + 1/100

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A trapezoid with bases that measure 8 inches and 11 inches has a height of 3 inches. What is the area of the trapezoid?
gavmur [86]
Area= 1/2(height)×(base↓1+base↓2)
Area=1/2(3)×(8+11)
Area=1/2(3)×(19)
Area=1/2(57)
Area=57/2 OR 28.5
Thus, the area of the trapezium is 28.5inches^2
3 0
3 years ago
Neeeeed helpppppp please
MissTica

Answer:

Scale factor = 7

Step-by-step explanation:

Dilation with scale factor to map HEFG to DABC will be,

Scale factor = \frac{\text{Dimension of Image DABC}}{\text{Dimension of preimage HEFG}}

                    = \frac{\text{Length of CD}}{\text{Length of GH}}

Length of CD = Distance between two points C(0, -7) and D(-7, 0)

                       = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

                       = \sqrt{(-7-0)^2+(0+7)^2}

                       = \sqrt{98}

                       = 7\sqrt{2}

Length of GH = Distance between G(0, -1) and H(-1, 0)

                       = \sqrt{(-1-0)^2+(0+1)^2}

                       = \sqrt{2}

Scale factor = \frac{7\sqrt{2} }{\sqrt{2} }

                    = 7

6 0
3 years ago
A bag contains a mixture of identical coloured balls.
Amiraneli [1.4K]

Answer:

72 yellow balls

Step-by-step explanation:

80% of 90 is (0.80*90) = 72 yellow balls.

5 0
2 years ago
Which of the purchases would be the least expensive? Purchase Amount of sale Sales tax rate A $150 5% B $145 7% C $140 8% D $135
Lera25 [3.4K]

Answer:

It is d

Step-by-step explanation:

:)

8 0
3 years ago
Read 2 more answers
Please help me with this question.​
Sav [38]

Answer:

-2; -7

Step-by-step explanation:

Hello, the graph is split in two lines, right?

Go to the first line at the left and move to the right until you reach the end of the line, which is for x = -1,

*** This is the meaning of x tending to

(-1)^{-} ***

which value can you see for the y-axis? \boxed{-2}

Now, go to the second line at the right and move to the left until you reach the end of the line, which is for x = -1,

*** This is the meaning of x tending to

(-1)^{+} ***

which value can you see for the y-axis?

\boxed{-7}

Thanks

7 0
2 years ago
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