A car travels 210 km in 3 hours. How far does it travel in 30 minutes ?

Answers

Answer 1

Answer:

Answer:35

Step-by-step explanation: 180 minutes divided by 30 minutes is the number that you have to divide from 210 to get the answer.

180/30=6

210/6=35

answer is 35

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A while back, either James borrowed $12 from his friend Rita or she borrowed $12 from him, but he can't quite remember which. Either way, he is planning to pay her back or ask that she pay him back this afternoon. If he has $42.80 in his wallet, which equation represents the amounts of money he may have after he sees Rita?

Answers

He will either have $54.80 or $30.80 in his wallet. Also, the question says, how much money will he have after, not how much will he have in his wallet after..... so you just write x as its unknown how much other money he has.... just saying

Alice spins the spinner 3 times. What is the probability that she spins an A, then a B, and then a C?A. 1/3
B. 1/9
C. 1/27
D. 1/12

Answers

I believe it is A.1/3 because there are 3 letters, so that is automatically the denomitor. And there is only 1 letter chosen in this problem so that would be 1/3. To convert that to a percentage or to put it in decimal form, it would be this:
Percentage: 33.3%
Decimal Form: .3

A painter is painting a wall with an area of 150 ft2. He decides to paint half of the wall and then take a break. After his break, he paints half of the remaining unpainted portion and then takes another break. If he continues to paint half of the remaining unpainted portion between breaks, approximately what portion of the original wall will be painted when he takes his fifth break?112.50 ft2

145.31 ft2

147.66 ft2

290.63 ft2

Answers

The answer is 141.35 ft²

Before the first break, it was painted:
150 ft² ÷ 2 = 75 ft²
Now it's left:
150 ft² - 75 ft² = 75 ft²

Before the second break, it was painted:
75 ft² ÷ 2 = 37.5 ft²
Now it's left:
75 ft² - 37.5 ft² = 37.5 ft²

Before the third break, it was painted:
37.5 ft² ÷ 2 = 18.75 ft²
Now it's left:
37.5 ft² - 18.75 ft² = 18.75 ft²

Before the fourth break, it was painted:
18.75 ft² ÷ 2 = 9.375 ft²
Now it's left:
18.75 ft² - 9.375 ft² = 9.375 ft²

Before the fourth break, it was painted:
9.375 ft² ÷ 2 = 4.6875 ft²
Now it's left:
9.375 ft² - 4.6875 ft² = 4.6875 ft²

Now, we will sum what he painted for now:
75 ft² + 37.5 ft² + 18.75 ft² + 9.375 ft² 4.6875 ft² = 141.3125 ft² ≈ 141.35 ft²

When the painter takes his fifth break, there will be 141.35 ft² of the wall painted.

The painter would have 145.3125 ft^2 painted after the fifth break.

Each diagram shows a cube intersected by a plane. In which case is the cross section a square?

Answers

In the case 4 is the cross section a square.

Here, we have,

To determine which case represents a cross section of a cube that is a square, we need to look for a cross section where all sides are of equal length and all angles are right angles, which are the defining characteristics of a square.

we know that,

When a plane intersects a cube, the resulting cross section can have various shapes, such as rectangles, triangles, or irregular polygons.

To determine if the cross section is a square, the conditions are:

All sides of the cross section are of equal length.

All angles of the cross section are right angles (90 degrees).

If we can visually inspect the diagrams, carefully examine the sides and angles of the cross sections shown in each case.

in case 4, there is the presence of equal sides and right angles.

we can find in case 4 where all sides are equal and all angles are right angles, then that case 4 represents a square cross section of the cube.

learn more on cross-section:

brainly.com/question/29137035

#SPJ2

complete question :

attached

Answer: Intersection 4

Step-by-step explanation: If you are talking about this question, then the answer is intersection 4.

Make x the subject.
1) а — x =y
2) m = k – x
3) k - t2x = m

Answers

Answer:

${ \tt{a - x = y}} \n \n { \boxed{ \tt{x = a - y}}}$

${ \tt{m = k - x}} \n \n { \boxed{ \tt{x = k - m}}}$

${ \tt{k - {t}^(2)x = m }} \n { \tt{ {t}^(2) x = k - m}} \n \n { \boxed{ \tt{x = \frac{k - m}{ {t}^(2) } }}}$

Step-by-step explanation:

1) a-x=y

a-a-x=y-a

-x=y-a

x= -(y-a)

2) m=k-x

-x=m-k

x= -(m-k)

Use the form y=mx +b for linear equations.Write the equation for the following relation.C = {(x, y): (6, 15), (8, 21), (10, 27), . . .}

Answers

I'm not sure if the answer is right, but here you go.

y=mx+b

'm' is for gradient of the line. First, calculate the gradient.

Let's use (6,15) and (8,21)

Gradient, m = $y_(2)$ - $y_(1)$
--------------
$x_(2)$ - $x_(1)$

= 21 - 15 = 6 = 3
----------- ----
8 - 6 2

Therefore, m = 3 . Now let's search 'b' .
Let's use (6,15) again. Substitute it into the equation.

y=mx+b
15 = 3 (6) + b
b = -3

Thus, the equation : y=3x -3

Answer: Use Desmos.com/calculator

Step-by-step explanation:

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