All categories

3 years ago

PRECAL EDGE HELPPPPP

Mathematics

1 answer:

Wewaii [24]3 years ago

3 0

Answer:

3.1

Step-by-step explanation:

You might be interested in

Please help what does B and C equal

lapo4ka [179]

Answer:

m∠b=20°

m∠c=160°

Step-by-step explanation:

∠c and the 160° angle are vertical, so they are congruent.

m∠c=160°

∠c and ∠b are supplementary, so their sum is 180°.

$b+160=180$

$b=20$

So, m∠b=20°.

8 0

3 years ago

What is the equation of the line that has a slope of -3 and goes through the point (3,-1)

Pachacha [2.7K]

Answer:

y = -3x+8

Step-by-step explanation:

We can use the slope intercept form of an equation

y = mx+b where m is the slope and b is the y intercept

y = -3x+b

Substitute the point into the equation

-1 = -3(3)+b

-1 = -9+b

Add 9 to each side

-1+9 = -9+9+b

8 =b

y = -3x+8

5 0

4 years ago

A school has a goal of getting at least 2000 box tops. They have 872 so far. They have 8 days left to get it. At least how many

andrew11 [14]

Answer:

141 box tops per day

Step-by-step explanation:

Ok so you start by subtracting 2,000 and 872 you then get 1,128 and because you have to meet the goal in 8 days you divide 1,128 by 8 and the answer you should get is 141!!

I hope this helped let me know if I’m incorrect

Good luck!

7 0

3 years ago

please answer!!! click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag

Leokris [45]

Answer:

don't know the answer good luck

Step-by-step explanation:

Just need the points

6 0

3 years ago

Read 2 more answers

Dina and Masha started out on a 10 km bike path at the same time. When Dina reached the end of the 10 km, Masha still had 2 km t

german

Answer:

4 km/h

Step-by-step explanation:

We are told that Dina and Masha started out on a 10 km bike path at the same time.

Dina's biking speed is 5 km/h.

Let us find taken by Dina to cover 10 kn distance.

$\text{Time}=\frac{\text{Distance}}{\text{Speed}}$

$\text{Time taken by Dina to cover 10 km}=\frac{10km}{5\frac{km}{hr}}$

$\text{Time taken by Dina to cover 10 km}=\frac{10km}{5}\times \frac{hr}{km}}$

$\text{Time taken by Dina to cover 10 km}=2hr$

Therefore, Dina took 2 hours to complete 10 km.

Since both started at the same time, therefore, Masha also took 2 hours to complete 2 km less than Dina.

Let us find distance covered by Masha.

$\text{Distance covered by Masha}=10\text{ km}-2\text{ km}=8\text{ km}$

Now let us find Masha's biking speed.

$\text{Speed}=\frac{\text{Distance}}{\text{Time}}$

$\text{Masha's biking speed}=\frac{8\text{ km}}{2\text{ hour}}$

$\text{Masha's biking speed}=4\frac{\text{ km}}{\text{ hour}}$

Therefore, Masha's biking speed is 4 km per hour.

4 0

4 years ago