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2 years ago

Can u guys help me with this it is Surface Area of a Rectangle thank u

Mathematics

1 answer:

puteri [66]2 years ago

4 0

Answer:

1. 192 cm Squared

2. 76 ft Squared

3. 450 yd Squared

4. 510 in Squared

5. 204 mm Squared

6. 194 cm Squared

Step-by-step explanation:

1. 192 cm Squared

2 x 8 x 4 + 8 x 8 x 2

64 + 128 = 192

2. 76 ft Squared

1 x 4 x 2 + 1 x 7 x 2 + 4 x 7 x 2

8 + 12 + 56 = 76

3. 450 yd Squared

15 x 10 x 2 + 15 x 3 x 2 + 10 x 3 x 2

300 + 90 + 60 = 450

4. 510 in Squared

9 x 15 x 2 + 9 x 5 x 2 + 5 x 15 x 2

270 + 90 + 150 = 510

5. 204 mm Squared

1 x 9.3 x 2 + 1 x 9 x 2 + 9 x 9.3 x 2

18.6 + 18 + 167.4 = 204

6. 194 cm Squared

3 x 12 x 2 + 12 x 4 x 2 + 3 x 4 x 2

72 + 96 + 24 = 194

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If rs=st the point s is called the midpoint of rt?

SIZIF [17.4K]

S is the midpoint of RT

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3 years ago

HELP When does expanding and simplifying a(b + c) result in a positive value for ac?

Reil [10]

Answer:

When c and a are positive or both are negative

Step-by-step explanation:

negative times negative equals positive so if a was negative and c was negative -a*-c= ac

Of course positive times positive equals negative so if a and c were positive we could do

a*c= ac

Hope I could help !

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2 years ago

What is the midpoint and distance between points P(3,5) and Q(7,5)

storchak [24]

The formula of a midpoint:

$M\left(\dfrac{x_1+x_2}{2};\ \dfrac{y_1+y_2}{2}\right)$

The formula of a distance between two points:

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

We have the points P(3, 5) and Q(7, 5). Substitute:

$x=\dfrac{3+7}{2}=\dfrac{10}{2}=5\\\\y=\dfrac{5+5}{2}=\dfrac{10}{2}=5$

$d=\sqrt{(5-5)^2+(7-3)^2}=\sqrt{0^2+4^2}=\sqrt{4^2}=4$

<h3>Answer:</h3><h3>Midpoint = (5, 5)</h3><h3>Distance = 4</h3>

4 0

3 years ago

Pls help me Find the correct answer

IrinaK [193]

I believe the answer would be D, 2y+6/9y-7 x 3/2 because dividing by a fraction is the same as multiplying by its reciprocal (the fraction flipped).
Hope I helped! ;)

6 0

3 years ago

Read 2 more answers

The 6 students in Mrs. James' class were asked how many minutes It takes them to get to school in the morning. Here is what they

Sauron [17]

Answer:

mean = 10.2 minutes

median = 9.5 minutes

Step-by-step explanation:

To find the mean, add up all of the results and then divide by the number of students in the sample. Therefore, the work should look like this: 15+8+7+7+11+13=61 --> 61/6=10.1666667

To find the median, order the results from least to greatest and then notice which number is the middle value. Since there is an even number of students in the sample, you will find that both 8 and 11 are the middle values when you put them all in numerical order (7, 7, 8, 11, 13, 15). Therefore, you must find the average of those two number in order to get the median. (8+11=19 --> 19/2=9.5)

3 0

3 years ago