3 years ago

Hi there! Please, please help me on these problems! And show how to do it, thanks!!

Mathematics

1 answer:

yan [13]3 years ago

8 0

1). 8 x 5x - 8 x 3y
40x - 24y

you have to multiply the eight inside the parentheses

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**hint** Find the hypotenuse and then subtract that from the distance he actually traveled.

icang [17]

Answer:

10 miles

Step-by-step explanation:

5 0

2 years ago

There are 128 students going on a field trip to pan for gold. If they are going in vans that hold 7 students each, how many vans

Viefleur [7K]

128/7 is roughly 18.3 so you would need 19 vans. 18 of them would fit all 7 so you’d have 126 so the last van would fit 2 students meaning it won’t be full

6 0

2 years ago

Type the slope-intercept equation

natulia [17]

Answer:

y= -2x +1

Step-by-step explanation:

<u>slope- intercept form</u><u>:</u>

y= mx +c, where m us the gradient and c is the y-intercept.

Let's find the value of m first using the gradient formula.

Gradient= $\frac{y1 - y2}{x1 - x2}$

$m = \frac{ - 3 - 3}{2 - ( - 1)} \\ m = \frac{ - 6}{2 + 1} \\ m = \frac{ - 6}{3} \\ m = - 2$

y= -2x +c

To find the value of c, substitute a pair of coordinates.

When x= -1, y=3,

3= -2(-1) +c

3= 2 +c

c= 3 -2

c= 1

Thus the equation of the line is y= -2x +1.

4 0

2 years ago

I don't know what I am doing help please (C:

NeX [460]

Answer:

Step-by-step explanation:

The far right side of the triangle is 17 cm, which is the height.

The base would be 34 minus 17 because whole length of the rectangle is 34 and the triangle covers all but 17 of it.

So then you would take 1/2 of 17.

Then multiply it by 17 to get 160.5

7 0

2 years ago

The equation can be used to find the length of AB

dmitriy555 [2]

You can use
Sine25=9/c
Or
Sin25/9=sine 90/c

7 0

3 years ago