Marco picked answer A for the following problem. Why is that not the correct answer?

Answer:

C) (a-12b)(a+12b)

Step-by-step explanation:

a^2-144b^2 = (a-12b)(a+12b)

This is the formula that when two terms squared are written with a minus sign between them their factors are the product of the original numbers once with a plus sign and once with the minus sign.

This can be explained by multiplying them.

                (a-12b)

                *(a+12b)        

                  a²- 12ab

                      +12ab - 144b²      

                    a²    +0    - 144b²    

We see we get the same answer as applying the formula above.

Answer:

.

nhuxu

Step-by-step explanation:

vxxgfx

Answer:

what do you mean

Step-by-step explanation:

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Answer:

The temperature change in a chemistry experiment was -2C every 30 min. The initial temperature was +6C. What was the temperature after 4 h

4 hours = 8 half hours

0, 1, 2, 3, 4, 5, 6, 7, 8 half hours

6, 4, 2, 0, -2, -4, -6, -8, -10

-10 degrees C

Answer:

M< D = 105⁰

Step-by-step explanation:

the sum of the opposite angles of a cyclic quadrilateral is 180⁰

hence, <ADC + <ABC = 180⁰

<ADC + 75⁰ = 180⁰

<ADC = 180⁰ - 75⁰

< ADC= 105⁰

9514 1404 393

Answer:

  y = 30°

Step-by-step explanation:

Angles x and y are "vertical" angles, so are congruent.

  x = y = 30°

Answer:

c

Step-by-step explanation:

Number of students = number of students that went to the museum / percentage of students that went to the museum

90 / 0.45 = 200 students

Answer:

I believe H is the answer.

Step-by-step explanation:

Double checking.

Answer: 1 over 20

Step-by-step explanation: If the spinner has 5 parts to it at purple is one of those parts then the spinner has a 1/5 chance of it landing there.

If there are 4 cards and 1 of them are pink then there is a 1/4 chance of picking pink(if done randomly)

So if we mutiply 1/4 and 1/5, we get 1/20

That is how I arrived at my answer of 1 over 20

Answer:

iit's the 3q+ 7q =10q one

Answer:

O 3q + 7q and 10q

3q + 7q and 10q?

a) x+1+x+1+x+1+x+1=56 x=6.5

b) 2(6.5)+1=14cm

8 + [tex]\frac{w}{4}[/tex] = 8 + [tex]\frac{16}{4}[/tex] = 8 + 4 = 12

Answer:

∠ U = 70°

Step-by-step explanation:

The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

120° is an exterior angle of the circle , then

∠ U + 50° = 120° ( subtract 50° from both sides )

∠ U = 70°

Answer:

[tex]\boxed {\boxed {\sf 163.28 \ yards}}[/tex]

Step-by-step explanation:

The circumference of a circle is the distance around the circle, or the perimeter. It is the product of pi and the diameter.

[tex]c= \pi \times d[/tex]

The diameter is the distance from one side to the other through the center. If we look at the circle given, we see the diameter must be 52 yards.

Also, remember we are using 3.14 for pi.

Substitute these values into the formula.

[tex]c= 3.14 * 52 \ yd[/tex]

Multiply.

[tex]c=163.28 \ yd[/tex]

The circumference of the circle is 163.28 yards.

Answer:

[tex]\large\fbox{\purple{\underline{Circumference of circle is 163.28 yards}}}[/tex]

Step-by-step explanation:

In the question we have given

Diameter of circle is 52 yards

And Value of π = 3.14

We know that

Circumference of circle = π × diamter

putting the values

Circumference = 3.14 × 52 yards

by mutiplying we get,

Circumference of circle = 163.28 yards

Therefore, Circumference of circle is 163.28 yards

Answer:

Fish with -1 foot

Step-by-step explanation:

- = under

+= above

If you set your water level to 0 then:

-1 +0 = -1 so the fish is 1 foot under the water level

-5 +0 = -5 do the fish is 5 foot under the water

And the last fish either jumped super high or it was hanging on a fishing line becouse it was 8 feet above the water level

So the fish that was the closes to the water level was the fish with -1

Answer:

[tex]24[/tex]

Step-by-step explanation:

[tex]20%[/tex] of [tex]120[/tex][tex]=24[/tex]

Answer:

E

Step-by-step explanation:

Answer:

It's E l did that before

Answer:

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Answer:

90kg

Step-by-step explanation:

it is so because, to decrease a number by a ratio you have to multiply with the smallest number and divide with the biggest one. For example 117 in the ratio 7:3. 117×3=351 which is divided by 7 and is equal to 50.14.

The value 117kg decreased in the ratio 10:13 will be 90kg

Given the ratio 10:13. To reduce 117kg in this ratio, we will follow the steps:

Step 1: Multiply 117 by the smallest value

117 * 10 = 1170

Step 2: Divide the result by the largest value to have:

Value = 1170/13

Value = 90kg

Hence the value 117kg decreased in the ratio 10:13 will be 90kg

Learn more on decrement here: https://brainly.com/question/2328454

Answer:

Very weak negative correlation/trend

Step-by-step explanation:

There's a very weak negative correlation between events x and y, given that r is negative, and the fact that r is very close to 0.

Answer:

x = 8

Hope this helps!

Answer:

Step-by-step explanation:

Answer:

[tex]Volume = 288in^3[/tex]

Step-by-step explanation:

Given

[tex]Base\ Cubes = 36[/tex]

[tex]Layers = 8[/tex]

Required

The volume of the prism

The number of base cubes represents the base area and the number of layers represents the height of the prism.

So, the volume is calculated as:

[tex]Volume = Base\ Cubes * Layers[/tex] i.e Base Area * Heights

[tex]Volume = 36 * 8[/tex]

[tex]Volume = 36in^2 * 8in[/tex]

[tex]Volume = 288in^3[/tex]

Answer: [tex]\sqrt{85}[/tex] or 9.2

Step-by-step explanation:

Answer:

minimum =4 cost= 10.40

Step-by-step explanation:

hope this helps:))

Answer:

23

Step-by-step explanation:

I think it is 23 so try this

Answer:

it's like calculating a volume in a prisim

14×6×6

504

Answer:

55 mph for 3.5 hours would be 192.5 miles. 60 mph for 2.5 hours would be 150 miles. The total of mile Ms. Logan went is 342.5.

Answer:

(3, -6) reflected across the x axis

(-3, 6) reflected across the y axis

Step-by-step explanation:

Answer:

c. 172 in^2

I did this!

The surface area of the solid is 176 in².

Surface area is the amount of space covering the outside of a three-dimensional shape.

Given that a solid figure made by joining two cuboids, we need to find the total surface area of the solid,

So, we will find the TSA of lower and upper cuboids and then minus the base area of the upper cuboid as it is a overlapping,

Also, the formula used for TSA of a cuboid = 2(LH + WH + LW)

L = length, W = width and H = height,

So,

TSA = 2(7·3 + 3·5 + 5·7) + 2(4·3 + 3·1 + 4·1) - 1·4

= 2(21 + 15 + 35) + 2(12 + 3 + 4) - 4

= 2 × 71 + 2 × 19 - 4

= 142 + 38 - 4

= 142 + 34

= 176 in²

Hence the surface area of the solid is 176 in².

Learn more about surface area click;

https://brainly.com/question/29298005

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Answer:

I think it is 3/3

Step-by-step explanation:

Step-by-step explanation:

here's your solution

=> angle 3 and angle 8 are interior angles

we know that sum of both angle is 180°

=> angle 3 + angle 8 = 180°

=> angle 3 + 129° = 180°

=> angle 3 = 180° - 129°

=> angle 3 = 51°

now , angle 3 and angle 1 are vertical angle

hence both angle are equal

=> angle 1 = 51°

hope it helps 【€€】