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3 years ago

-47+-58 order of operations

Mathematics

2 answers:

alexdok [17]3 years ago

8 0

Answer:

-105 : )

Step-by-step explanation:

kicyunya [14]3 years ago

7 0

Answer: -105

Step-by-step explanation:

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kevin uses a coupon for 75% off one item. he only pays $3.00 for a train set. how much money was the train set originally?

Natalka [10]

Answer:

$4.00

Step-by-step explanation:

75% of 4

75% × 4 =

75/100 × 4 =

(75 ÷ 100) × 4 =

75 × 4 ÷ 100 =

300 ÷ 100 =

= 3

Hope this helps.

3 0

3 years ago

At the beginning of a snowstorm, Camden had 10 inches of snow on his lawn. The snow then began to fall at a constant rate of 2.5

Setler [38]

Answer:

He would have a total of 20 inches of snow on his lawn

Step-by-step explanation:

2.5 x 4 = 10

10 + 10 = 20

8 0

3 years ago

An art project has an area of 63.6 square inches. What is the width, in inches, of the project?

miss Akunina [59]

Answer:

Option C . 5.3 in

Step-by-step explanation:

<u><em>The complete question is</em></u>

An art project has an area of 63.6 square inches. What is the width, in inches, of the project?

A rectangle is shown divided into 4 smaller rectangles that are related to the size of the edges. The top edge is labeled 10 inches and 2 inches, above the top two rectangles. The top two rectangles are much larger than the bottom two rectangles

Let

x ----> the length of the art project in inches

y ----> the width of the art project in inches

we know that

The area of the rectangular art project is equal to

$A=xy$

we have

$A=63.6\ in^2$

$63.6=xy$ ----> equation A

$x=10+2=12\ in$

substitute the value of x in the equation A

$63.6=(12)y$

solve for y

$y=63.6/12\\y=5.3\ in$

8 0

4 years ago

luvenia can row 4mph in still water. She takes as long to row 7 mi upstream as 21 mi downstream. how

xeze [42]

Answer:

The speed of the river is 2mph.

Step-by-step explanation:

I guess that we want to find the speed of the river.

First, remember the relation: speed*time = distance

If the speed of the river is Sr, when Luvenia moves downstream (in the same direction that the flow of the water) the total speed will be equal to the speed of Luvenia in still water plus the speed of the water:

Sd = 4mph + Sr

and at this speed, in a time T, she can move 21 miles, so we have:

Sd*T = (4mph + Sr)*T = 21 mi

When moving upstream, the speed will be:

Su = (4mph - Sr)

and in the same time T as before, she moves 7 miles, so we have the equation:

Su*T = (4mph - Sr)*T = 7 mi

Then we have two equations:

(4mph + Sr)*T = 21 mi

(4mph - Sr)*T = 7 mi

Now we can take the quotient of those two equations and get:

((4mph + Sr)*T)/((4mph - Sr)*T) = 21/7

The time T vanishes, and we can solve it for Sr.

(4mph + Sr)/(4mph - Sr) = 3

4mph + Sr = 3*(4mph - Sr) = 12mph - 3*Sr

4*Sr = 12mph - 4mph = 8mph

Sr = 8mph/4 = 2mph.

7 0

4 years ago

Please help I only have 5 minutes left!

Zinaida [17]

Hi Briana.

All triangles have a total internal measurement of 180 degrees from their angles. Isosceles triangles have two similar side lengths, and one different side length also known as the base. Considering we have the base, we can determine the side lengths by using the following equation:
2x + 24 = 96
Let's get to solving!

2x + 24 = 96; subtract 24 from both sides.
2x = 72; divide both sides by 2 to solve for the measurement of each side length.
x = 36;

Your answer is B.) 36

I hope this helps!

3 0

3 years ago

Read 2 more answers