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2 years ago

13

write the equation of a line that has a slope of-3 and passes through the point(1.25,4)use the drop-down menus to select the app

ropriate values in the equation

1 answer:

professor190 [17]2 years ago

6 0

Answer:

a

Step-by-step explanation:

trust me

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If 5 potatoes together have a mass of 1 kilogram and 8 pears together have a mass of 1200 grams, which has the greater mass, a p

lord [1]

The Potato has more mass

7 0

3 years ago

Which of the following algebraic steps will solve the equation 5p= -35 and what is the solution

Alex17521 [72]

Answer:

p=-7

Step-by-step explanation:

5p=-35

Divide both sides by 5

5p/5 =-35/5

therefore p=-7

4 0

3 years ago

Read 2 more answers

-8z+(4.5)+3.5z+7y-1.5

bogdanovich [222]

Answer:

$\boxed{\sf{7y+3-4.5z}}$

Step-by-step explanation:

In order to combine like terms, you have to isolate x and y from one side of the equation.

$\sf{-8z+\left(4.5\right)+3.5z+7y-1.5}$

<u>First, thing you do is remove parentheses.</u>

$\Longrightarrow: \sf{-8z+4.5+3.5z+7y-1.5}$

<u>Solve.</u>

<u>Then, you combine like terms.</u>

$\Longrightarrow:\sf{-8z+3.5z+7y+4.5-1.5}$

<u>Add/subtract the numbers from left to right.</u>

-8z+3.5z=-4.5z

<u>Rewrite the problem down.</u>

$\Longrightarrow: \sf{-4.5z+7y+4.5-1.5}$

<u>Solve.</u>

4.5-1.5=3

$\Longrightarrow: \boxed{\sf{7y+3-4.5z}}$

<u>Therefore, the correct answer is 7y+3-4.5z.</u>

I hope this helps, let me know if you have any questions.

6 0

2 years ago

Which choice shows the coordinates of C’ if the trapezoid is reflected across the y-axis?

suter [353]

A reflection through the axis and is given by the following transformation rule:
(x, y) -------> (-x, y)
We have the following point:
C = (5, 3)
Applying the transformation rule we have:
(5, 3) -------> (-5, 3)
Therefore, C' is given by:
C '= (- 5, 3)
Answer:
(-5, 3)

6 0

3 years ago

Read 2 more answers

Two people start from the same point. One walks east at 4 mi/h and the other walks northeast at 8 mi/h. How fast is the distance

kvasek [131]

Answer:

5.89 mi/h

Step-by-step explanation:

This problem can be solved by using different methods. I will use vectors since it's the simplest way in which we can solve it. This can be solved by using related rates of change though.

First, we start by drawing a diagram with the velocity vectors.

A= velocity of the first person

B= velocity of the second person

C= velocity in which they are moving away from each other.

Since there is no acceleration in the problem, we can suppose we are talking about constant speeds, so the velocity at which they are moving away from each other will always remain constant. (It doesn't matter what time it is, the velocity will always be the same)

Having said this we can solve this problem by using the components, by using law of cosines or graphically. I will use law of cosines. The idea is to find the length of side c.

Law of cosines:

$C^{2}=A^{2}+B^{2}-2ABcos \gamma$

so we can solve the formula for C so we get:

$C=\sqrt{A^{2}+B^{2}-2ABcos \gamma}$

and now we can substitute the values we know:

$C=\sqrt{(4)^{2}+(8)^{2}-2(4)(8)cos 45^{o}}$

$C=\sqrt{16+64-32\sqrt{2}}$

$C=\sqrt{80-32\sqrt{2}} mph$

if we want an exact answer, then that will be the exact answer, which approximates to:

C=5.89 mph

4 0

3 years ago