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Vlad [161]
3 years ago
7

Which expression is equivalent to - 3(m+5) ? A m - 15 B - 3m + 5 C -3m - 15 D - 15m

Mathematics
1 answer:
mylen [45]3 years ago
5 0

Answer:

C) -3m - 15

Step-by-step explanation:

Distribute -3 to all terms within the parenthesis:

-3(m + 5)

Multiply:

-3 * m = -3m

-3 * 5 = -15

-3m - 15 is your answer, or C)

~

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Name this line in 3 ways
faltersainse [42]

Straight

Never ending (You can tell this as there are arrows on the ends)

On a diagonal with a negative slope

7 0
4 years ago
Someone pls help me ill give out brainliest pls don’t answer if you don’t know
IrinaVladis [17]

Answer:

16.5

is the rational number between them

Step-by-step explanation:

6 0
3 years ago
Suppose you need to know an equation of the tangent plane to a surface S at the point P(4, 1, 4). You don't have an equation for
Alex777 [14]

Answer:

15x-8y+9z=88

Step-by-step explanation:

We are given that

Equation of curves

r_1(t)=

r_2(u)=

Both curves lie on S.

We have to find the equation of tangent plane at P(4,1,4).

r'_1(t)=,r'_2(u)=

r_1(0)=, r_2(1)=

Hence, t=0 and u then it satisfied the given point.

Substitute the values in the derivatives

r'_1(0)=,r'_2(1)=

r'_1(0)\times r'_2(1)=\times =

The equation of tangent at point P(4,1,4) is given by

30(x-4)-16(y-1)+18(z-4)=0

30x-120-16y+16+18z-72=0

30x-16y+18z=176

15x-8y+9z=88

5 0
4 years ago
Jerry is saving money for a job. After the first 3 weeks he saved $135. Assuming the situation is proportional. Use the unit Rae
VMariaS [17]

The equation would be s = 45w and she would have 360 in 8 weeks.

In order to find this, we first have to find the per week amount. To find this, we divide the amount by the number of weeks.

135/3 = 45

Now that we have this we can multiply that by the variable and set equal to the total amount.

s = 45w

Now to find the amount in 8 weeks, simply plug in the 8 to w.

s = 45w

s = 45(8)

s = 360

3 0
4 years ago
Please answer the question in the picture and show your work! I got tan= square root of 2 but I’m not sure if that’s right and i
melomori [17]

Answer:

tan(θ) is undefined.

Step-by-step explanation:

Recall that tan(θ) = sin(θ) / cos(θ). We are given that sin(θ) = -1. Hence:

\displaystyle \tan\theta=\frac{\sin\theta}{\cos\theta}=-\frac{1}{\cos\theta}

Since 1 / cos(θ) = sec(θ):

\tan\theta=-\sec\theta

We can square both sides:

\tan^2\theta=\sec^2\theta

From the Pythagorean Identity:

\tan^2\theta+1=\sec^2\theta

Substitute:

\tan^2\theta+1=\tan^2\theta

So:

1\neq0

Since we acquire an untrue statement, no solutions exist.

If needed, refer to the unit circle. Recall that sin(θ) only equals -1 when θ = 3π/2 (on the interval [0, 2π)). At 3π/2, cos(θ) = 0. Since tan(θ) = sin(θ) / cos(θ), tan(θ) is undefined whenever sin(θ) = -1 (or 1).

6 0
3 years ago
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