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3 years ago

Find the value of each expression. -6 + 15 + 15 = 5. 9 - 4 - 17 =

Mathematics

1 answer:

zzz [600]3 years ago

5 0

Answer: -6 + 15 + 15 = 5.9 - 4 - 17

24 = 15.1

No solution

Step-by-step explanation:

I think this is the answer I'm not a hundred percent

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Match the real-world problem to its constant of proportionality.

irakobra [83]

Answer:

a. $18.36 for 3 pizzas : k = 6.12

b. $4.17 for 3 pounds of bananas . k = 1.39

c. $16.48 for 4 pounds of potatoes . k = 4.12

d. 2 cups of flour to make 24 cookie . k = 12

Step-by-step explanation:

PROPORTIONALITY:

Two quantities x and y are said to proportional to each other

if for x ∝ y , x = y k.

Here, k is called the PROPORTIONALITY CONSTANT.

⇒ $x \propto y \implies k = \frac{x}{y}$

Now, for the given quantities:

a. $18.36 for 3 pizzas [box]

Here, $k = \frac{x}{y} = \frac{18.36}{3} = 6.12$

So, the proportionality constant is 6.12.

b. $4.17 for 3 pounds of bananas [box]

Here, $k = \frac{x}{y} = \frac{4.17}{3} = 1.39$

So, the proportionality constant is 1.39.

c. $16.48 for 4 pounds of potatoes [box]

Here, $k = \frac{x}{y} = \frac{16.48}{4} = 4.12$

So, the proportionality constant is 4.12.

d. 2 cups of flour to make 24 cookies

Here, $k = \frac{x}{y} = \frac{24}{2} = 12$

So, the proportionality constant is 12.

7 0

2 years ago

A line passes through the point (5,-11) and has a slope of -2 Find an equation of this line.

Vsevolod [243]

Formula: y = mx + b

m being the slope

Slope given: -2, plug it in

Y = -2x + b

Now find y intercept (b)

Plug in the point (5,-11)

-11 = -2(5) + b

-11 = -10 + b, b = -1

Solution: y = -2x -1

5 0

2 years ago

You ask a neighbor to water a sickly plant while you are on vacation. without water the plant will die with probability 0.8. wit

atroni [7]

The correct answer should be 20% because u were 80% certain he would remember so that means ur 20% certain he would forget

4 0

2 years ago

Please help, 20 points.<br> Perimeter :)

djyliett [7]

Answer:

Step-by-step explanation:

<em>Look at the picture.</em>

The dimensions of the picture:

(42 - 2x)in × (32 -2x)in

The formula of an area of a rectangle:

A = l · w

l - length, w - width

Substitute l = (42 - 2x), w = (32 - 2x) and A = 900

(42 - 2x)(32 - 2x) = 900

8 0

2 years ago

Which dot plot shows a sample that is most representative of the number of pets in a household?

Dovator [93]

Answer:

you kinda need to show a dot plot for someone to answer your question

Step-by-step explanation:

6 0

3 years ago