5. a.) 8.73/450x100=1.94
b.) 8.73/450≈0.02
c.) 450/8.73x25≈1289
7 a.) 622/12≈52km per hour
b.) 622/0.5=1244 km per hour ( that's .......impossible...)
Those are your answers.

3 0

4 years ago

Read 2 more answers

Use the place values of 35 to fill in the blanks in parentheses.Then, give the value of 2 x 35.(a) 2 x 35 = (2 x D)- (DХа 6?(b)

jonny [76]

In 35, 3 is in the tens place and 5 is in the ones place, that is,

place value of 3: 30

place value of 5: 5

This means that 35 can be expressed as 30 + 5.

Substituting 35 = 30 + 5 into the multiplication given, we get:

$\begin{gathered} 2\cdot35=2\cdot(30+5) \\ \text{Distributing the multiplication over the addition:} \\ 2\cdot35=(2\cdot30)+(2\cdot5) \\ \text{ Solving each multiplication on the right} \\ 2\cdot35=60+10 \\ 2\cdot35=70 \end{gathered}$

8 0

1 year ago

Are (2,9) and (-3,-6) both on the line y = 4x + 6? If not, find an equation for the line that does pass through both points.

igor_vitrenko [27]

Answer:

no, y=3x+3

Step-by-step explanation:

plug both points into the equations:

9=4*2 +6 -> 9=8+6, doesn't work
-6=4(-3)+6 -> -6=-6, works

one works but the other doesn't so now we find a line through both points

use the formula (y_2-y_1)/(x_2-x_1) to find the slope:

(-6-9)/(-3-2)=-15/-5=3

y=3x+b, plug in a point to find b:

9=3(2)+b
9=6+b
b=3
y=3x+3

7 0

3 years ago