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3 years ago

(please explain clearly, I am very tired) Find the surface area of the composite figure.

Mathematics

1 answer:

Y_Kistochka [10]3 years ago

8 0

Answer:

644

Step-by-step explanation:

SA=[2×(5×20 + 5×6 + 20×6)] +

[2×(4×12 + 4×6 + 12×6)] -

[ 2× 12×6]

= [2×(250)]+[2×(144)] - [144]

= 500+288-144

= 644 cm²

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Find the distance represented by 4.9 inches if 1 inch = 50 miles.

pishuonlain [190]

Answer:

245 miles

Step-by-step explanation:

To complete this, you want to use the unit conversion technique in fraction form. The units for the numerator of the first fraction (thing you want to convert) should match the units of the denominator in the multiplying fraction.

8 0

3 years ago

Read 2 more answers

Use the formula for interest P=750 r=7% Y=25 A=?

Over [174]

Answer:

2062.50

Step-by-step explanation:

Interest = (Principle x rate x time)/100

Amount = Principle + interest

Principle = 750

Rate = 7%

Time = 25 years

(750 x 7 x 25)/100

= 131250/100

=1312.50

Principle = 750

Interest = 1312.50

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3 years ago

Solve the following equation system by graphing X-Y=4 X+Y=2 What is the solution?

AfilCa [17]

X-Y=4,
X+Y=2
-------------add
2x = 6
x = 3

X - Y =4
3 - Y = 4
Y = 3 - 4
Y = -1

solution (3 , -1)

4 0

3 years ago

I need help doing this.

melisa1 [442]

Answer:

6.63

Step-by-step explanation:

6.63324958071

the hundredth spot is the first 3, so you go to the second 3, because its under 5, the second 3 stays the same and doesn't round up to 4.

3 0

3 years ago

A theorem in geometry states that the measure of an inscribed angle is half the measure of its

RoseWind [281]

Answer:

The first option is the correct option

Step-by-step explanation:

From the question the slope AC is evaluated as

$m_1 = \frac{b-0}{a- (-c)}$

$m_1 = \frac{b}{a+c}$

And the slope of line CB is mathematically evaluated as

$m_2 = \frac{0-b}{c-a}$

$m_2 = \frac{b}{c-a}$

Now for lines that are perpendicular to each other then the product of their slope should be equal to -1

So if $m ZC$ $= 90^o$

Then

$m_ *m_2 = -1$

i,e

$[\frac{b}{a+ c} ] [\frac{b}{a-c} ] = -1$

7 0

3 years ago