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Sever21 [200]
2 years ago
13

Calculate the value of each expression

Mathematics
1 answer:
I am Lyosha [343]2 years ago
5 0

Answer:

a. -2.6

b. -2.6

c. 3

d. -4

e. 7

f. 0

Step-by-step explanation:

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Charlie reads fast. He reads 1 2/7 pages every 2/3 minute at a contact rate. How many minute does he read per page
Mariana [72]

Answer:

1 page per 14/27 minute

Step-by-step explanation:

9/7 page / 2/3 min =

1 page / 2/3 * 7/9 min =

1 page / 14/27 min

4 0
3 years ago
The area of the rectangle is 625 square units. If the width is 12 units, what is the length?​
raketka [301]

Answer:

6

Step-by-step explanation:

7 0
3 years ago
On a coordinate plane, line A B goes through (negative 2, 4) and (0, negative 4). Point Z is at (0, 2).
nydimaria [60]

Answer:

(–4, 1)  

Step-by-step explanation:

1. Calculate the slope of AB

m₁ = (y₂ - y₁)/(x₂ - x₁) = (-4 - 4)/(0 -(-2))= -8/2 = -4

2. Calculate the slope of the perpendicular line

m₂ = -m₁ = ¼

3. Calculate its y-intercept

Point Z, (0,2), is the y-intercept.

4. Write the equation for the line

Insert the values of m and b

y = ¼x + 2

5. Check the points

(a) (-4,1)

1 = ¼(-4)+ 2

1 = -1 + 2

1 = 1

TRUE

(b) (1,-2)

-2 = ¼(1) + 2

-2 = ¼ + 2

-2 = 2¼

FALSE

(c) (2,0)

0 = ¼(2) + 2

0 = ½ + 2

0 = 2½

FALSE

(d)  

4 = ¼(4) + 2

4 = 1 + 2

4 = 3

FALSE

Only (-4,1) is on the perpendicular line.

The diagram shows the line going through AB in red and the perpendicular line in purple.

7 0
3 years ago
Read 2 more answers
A marble is drawn at random from a box containing 10 red, 30 white, 20 blue, and 15 orange marbles. Find the probability that it
Tresset [83]

Step-by-step explanation:

given data:

total marbles = 75

red marble = 10

white marble = 30

blue marble = 20

orange marble = 15

solution:

a. Probability of drawing an orange or red

= 15/75 + 10/75

= 1/3

b. probability of not drawing a red or blue

= 1 - 20+10/ 75

= 3/5

c. Not blue

= 1 - p

= 1 - 20/75

= 11/5

d. Probability of drawing a white

= 30/75

= 2/5

e = red, white or blue

= 10/75 + 30/75 + 20/75

= 4/5

6 0
4 years ago
All math teachers are smart. Ms. Smith is your math teacher, so she is smart. What type of reasoning is this? inductive or deduc
Scorpion4ik [409]

Answer:

I believe it is Inductive Reasoning.

Step-by-step explanation:

Inductive Reasoning is a type of logical thinking that involves forming generalizations based on specific incidents you've experienced, observations you've made, or facts you know to be true or false.

Deductive Reasoning is a basic form of valid reasoning.

7 0
3 years ago
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