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3 years ago

Please help important I need now

Mathematics

2 answers:

uysha [10]3 years ago

7 0

Answer:

14 cm

The correct answer is B

Salsk061 [2.6K]3 years ago

6 0

I think it’s 14 centimetres so option B

3+3+4+4= 14
6+6+2+2=14
12+12+1+1=26

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Please solve this question.

andre [41]

Answer:

x = - 2

y = 5

Step-by-step explanation:

Hi there !

2x + 9 = y

y = - 4x - 3

equality

2x + 9 = - 4x - 3

2x + 4x = - 9 - 3

6x = - 12

x = - 12 : 6

x = - 2

replace x = - 2

2(-2) + 9 = y

- 4 + 9 = y

y = 5

Good luck !

8 0

3 years ago

Which of the following can you use to find 20 percent of 48?

lana [24]

Answer:

B:0.2(48)

Step-by-step explanation:

Of means multiply

20% of 48

Changing to decimal form

.20 * 48

8 0

3 years ago

Read 2 more answers

MathA single die is rolled. Find the odds in favor of rolling a number greater than 3.The odds in favor of rolling a number grea

tamaranim1 [39]

we have that

a number greater than 3

possible favorable results are

4, 5, 6

Probability that the event occur=3/6

Proba

6 0

11 months ago

Let II be the tangent plane to the graph of f(x, y) = 8 – 2x^2 – 3y^2 at the point (1, 2,-6). Let S, x² + y^2 + z = 4 be another

stealth61 [152]

Let $F(x,y,z)=f(x,y)-z$ . The tangent plane to $f(x,y)$ at (1, 2, -6) has equation

$\nabla F(1,2,-6)\cdot(x-1,y-2,z+6)=0$

We have

$\nabla F(x,y,z)=(-4x,-6y,-1)\implies\nabla F(1,2,-6)=(-4,-12,-1)$

Then the tangent plane has equation

$(-4,-12,-1)\cdot(x-1,y-2,z+6)=0\implies -4(x-1)-12(y-2)-(z+6)=0\implies 4x+12y+z=22$

Let $g(x,y)=4-x^2-y^2$ , and $G(x,y,z)=g(x,y)-z$ . The tangent plane to $S$ at a point $(a,b,c)$ is

$\nabla G(a,b,c)\cdot(x-a,y-b,z-c)=0$

We have

$\nabla G(x,y,z)=(-2x,-2y,-1)\implies \nabla G(a,b,c)=(-2a,-2b,-1)$

so that this plane has equation

$(-2a,-2b,-1)\cdot(x-a,y-b,z-c)=0\implies2ax+2by+z=2a^2+2b^2+c$

In order for this plane to be parallel to the previous plane, we need to have

$\begin{cases}2a=4\\2b=12\end{cases}\implies a=2,b=6\implies g(a,b)=c=-36$

so the point we're looking for is (2, 6, -36).

6 0

3 years ago

Team Tool Bella canoed 15 miles in 5 hours. What was their

emmainna [20.7K]

Answer:

3 miles per hour

Step-by-step explanation:

We know that distance over time, d/t, is equal to rate, r.

By knowing this, we can substitute in the distance and time given into the formula:

d/t = r

15/5 = r

To solve this, we just need to simplify 15/5 to give us our answer:

15/5 = r

3 = r

This means that our rate is 3 miles per hour.

8 0

3 years ago

Read 2 more answers

Please help important I need now​

Please help important I need now