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4 years ago

I just did an “educated” guess.

Mathematics

2 answers:

xxTIMURxx [149]4 years ago

7 0

Its A cuz because theres 4 cubes in total

olganol [36]4 years ago

4 0

A =because there are 4 cubes

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Help help help plz help answer this questioonnnn

Llana [10]

Answer:

Step-by-step explanation:

goodluck!

7 0

3 years ago

Read 2 more answers

Solve: x^2 = 81 x^2 = -9 x^2 = 20 3x^2 = 125

sergeinik [125]

x^2 = 81
x = ±√81
x = ±9

x^2 = -9 no solutions

x^2 = 20
x = ±√20
x = ±2√5

 $3x^2 = 125 \\ 
x^2 = \frac{125}{3} \\ x=б \sqrt{ \frac{125}{3} }$

3 0

3 years ago

Graph the image of this figure after a dilation with a scale factor of 1/3 centered at the origin.

posledela

Answer:

see attached diagram

Step-by-step explanation:

A dilation with a scale factor of $\dfrac{1}{3}$ centered at the origin has a rule:

$(x,y)\mapsto\left(\dfrac{x}{3},\dfrac{y}{3}\right).$

Then the image of the triangle ABC is triangle DEF(see attached diagram) with coordinates

$D\left(\dfrac{-3}{3},\dfrac{3}{3}\right)\Rightarrow D(-1,1);$
$E\left(\dfrac{3}{3},\dfrac{9}{3}\right)\Rightarrow E(1,3);$
$F\left(\dfrac{6}{3},\dfrac{6}{3}\right)\Rightarrow F(2,2).$

3 0

3 years ago

Jon recently drove to visit his parents who live 280 miles away. On his way there his average speed was 9 miles per hour faster

Luba_88 [7]

Answer:

11 mph and 20 mph

Step-by-step explanation:

Represent his average speed going by r1 and his average speed returning by r2. We know that r1 = r2 + 9.

Recall that distance = rate times time, so time = distance / rate.

Time spent going was (280 mi) / r1, or (280 mi) / (r2 + 9 mph).

Time spend returning was (280 mi) / r2.

The total time was 14 hrs, so (280 mi) / (r2 + 9 mph) + (280 mi) / r2 = 14 hrs

Note that there is only one variable here: r2. Find r2, and then from r2, find r1:

Dividing all 3 terms by 14 hrs yields:

20 20

---------- + ----------- = 1

r2 + 9 r2

The LCD here is r2(r2 + 9). Thus, we have:

20r2 (r2 + 9)(r2)

------------------- = 1 or ------------------

(r2 + 9)(r2) (r2 + 9)(r2)

Then 20(r2) = (r2)^2 + 9(r2). This is reducible by dividing all terms by r2:

20 = r2 + 9, or 11 = r2. Then r1 = 11 + 9, or 20.

The two rates were 11 mph and 20 mph.

8 0

4 years ago

4. The numencal coefficient in 3xy is A-3 В 2 D ху Ску

BabaBlast [244]

Answer:

Step-by-step explanation:

Because in 3xy 3 is the numerical coefficient

3 0

3 years ago

Read 2 more answers