MATHEMATICS MIDDLE SCHOOL

What is the surface area of the rectangular prism?125 m2

200 m2

250 m2

Answers

Answer 1

Answer:

Answer:

Surface area =250 m^2

Step-by-step explanation:

Given the length of the prism is 10m

width is 5m and height is 5m

The formula for surface area =

2(length times width)+2(width times height)+2(height times length)

Plug in all the values in the formula

Surface area = $2(10 \cdot 5) +2(5 \cdot 5)+2(5 \cdot 10)$

$=100+50+100=250$

Surface area =250 m^2

Answer 2

Answer:

$\n$Surface area of a rectangular prism = The sum of the areas of the 6 rectangles formed by the height length and width.\n$S_A = 2(5^2 + 5\cdot 10 + 5\cdot 10) = 250m^2$

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Let JK be the median of LMBA. Find JK, m∠A and m∠ALM

Answers

Answer:

JK = 83 , m∠A = 70° , m∠ALM = 110°

Step-by-step explanation:

* Lets explain how to solve the problem

∵ ABCD is a trapezoid

∴ DC // AB

∴ m∠D + m∠A = 180° ⇒ interior supplementary angles

∵ m∠D = 110°

∴ 110° + m∠A = 180° ⇒ subtract 110° from both sides

∴ m∠A = 70°

∵ L is the midpoint of AD, and M is the midpoint of BC

∴ LM is the median of trapezoid ABCD

∴ LM // AB and DC

∴ m∠D = m∠ALM ⇒ corresponding angles

∵ m∠D = 110°

∴ m∠ ALM = 110°

- The length of the median is half the sum of the lengths of the two

parallel bases

∴ LM = 1/2 (AB + DC)

∵ AB = 96 units and DC = 44 units

∴ LM = 1/2 (96 + 44) = 1/2 (140) = 70 units

- In the quadrilateral ABML

∵ AB // LM

∵ AL ≠ BM

∴ ABML is a trapezoid

∵ JK is its median

∴ JK = 1/2 (AB + LM)

∵ AB = 96 units ⇒ given

∵ LM = 70 units ⇒ proved

∴ JK = 1/2 (96 + 70) = 1/2 (166) = 83

∴ JK = 83 units

???? i am confusion ????

Answers

Answer:

x = 4.8

Step-by-step explanation:

$(x)/(-12)=-0.4\qquad\text{multiply both sides by (-12)}\n\n-12\!\!\!\!\!\diagup^1\cdot(x)/(-12\!\!\!\!\!\diagup_1)=(-12)(-0.4)\n\nx=4.8$

Answer:

X=4.8

Step-by-step explanation:

Isolate x on one side of the equation.

x/-12=-0.4

x(-12)/-12=(-0.4)(-12) (First, multiply by -12 from both sides.)

(-0.4)(-12) (Solve.)

(-0.4)(-12)=4.8

x=4.8

So, the final answer is x=4.8.

Write the number that is 1 more than 8,325

Answers

the answer is to this question is 8,326

the number that is 1 more than 8,325 would be 8,326

Which is a diatomic molecule? (I also need explanation so that I can understand what I am doing for school please thank you very much) A.) He

B.) O2

C.) NaCL

D.) CuF2

Answers

Answer:

Oxygen is considered a diatomic molecule because the normal molecule consists of 2 atoms.

Step-by-step explanation:

Can someone help me in question 51 please

Answers

We know that the area of a parallelogram is the base * the height of it, so if we divide both sides by the height, then area/height=base. Therefore, we must divide the area by the height. To divide using polynomials, we first set it up similar to a regular long division problem:

______________________

2x+3 | 2x²+13x+15

Next, we take the first component of the numerator (2x² in this case) and divide it by the first component of the denominator (2x) to get x. That will form the start of our answer, and at the bottom, we will subtract our numerator by the denominator (2x+3) multiplied by the start of our answer (x). Therefore, we have

_x_____________________

2x+3 | 2x²+13x+15

-(2x²+3x)

_______________

10x+15

We then repeat the process until we finish, and whatever's left at the top is our answer. If there's something left, that's our remainder.

_x+5_____________________

2x+3 | 2x²+13x+15

-(2x²+3x)

_______________

10x+15

- (10x+15)

_________________

Therefore, our base has a length of x+5.

Feel free to ask further questions, and Happy Holidays!

Madison is making party favors. She wants to make enough favors so each guest gets the same number of favors. She knows 6 or 8 guests at the party. What is the least number of party favors Madison should make? Plz help me