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Kisachek [45]
2 years ago
6

Simplify the algebraic expression -30y+(-15y)+70

Mathematics
2 answers:
hram777 [196]2 years ago
7 0
<h3>Given ↓</h3>
  • The expression -30y+(-15y)+70
<h3>To Find ↓</h3>
  • The simplified version of this expression
<h3>Calculations ↓</h3>

-30y+(-15y)+70 is the same as

-30y-15y+70

<h3>Combine like terms </h3>

-45y+70

<h3>That's the ans.</h3>

hope helpful ~

Phantasy [73]2 years ago
4 0

Answer:

-45y + 70

Step-by-step explanation:

<u>Step 1:  Combine like terms</u>

-30y + (-15y) + 70

-30y - 15y + 70

-45y + 70

Answer: -45y + 70

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Answer: the answer is the first one!!

Step-by-step explanation: split the shape up and multiple the numbers that came with the problem and then put all the totals together i got a total of 364!! Hope that helps!!

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3 years ago
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PLS HELP ME &amp; EXPLAIN ANSWER &lt;3
defon

Answer:

  e.  10√30

Step-by-step explanation:

In this right triangle geometry, all of the right triangles are similar. This means that the ratio of long side to hypotenuse is the same for all triangles:

  x/(10+50) = 50/x

Multiplying by 60x, we have ...

  x^2 = 3000

  x = 10√30 . . . . . take the square root. Matches choice E.

_____

<em>Comment on estimating</em>

You're looking for x. Examining the figure, you see that x is the long side of the triangle with hypotenuse 10+50=60, so it will be shorter than that value. x is also the hypotenuse of the triangle with long side 50. So, x will be longer than 50.

The only answer choice with a value between 50 and 60 is choice E.

You don't even need to know how to find x. You only need to know that the hypotenuse is the longest side in a right triangle.

5 0
3 years ago
Two sides of a rectangle iPhones are five and 5/8 feet long other two sides of 6 1/4 feet long what is the perimeter
hoa [83]

Answer:

Here it is!

Step-by-step explanation:

6 0
3 years ago
37. The sum of first three terms in an arithmetic progression is 24 and the sum of their squares is 224. Find the first three te
Airida [17]

Answer:

12, 8, and 4

Step-by-step explanation:

  • Given

a + d + a + a - d = 24

3a = 24   ⇒  [ a = 8 ]  

and (a + d)² + a² + (a - d)² = 224

3a² + 2d² = 224

2d² = 224 - 192 = 32

d² = 16

[ d = ±4 ]

∴ The first three terms to A.P are

a + d = 8 + 4 = 12

a  -  = 8

a - d = 8 - 4 = 4

∴ Three terms are 12 , 8, and 4

8 0
2 years ago
10) Gabe put up a fence around his rectangular vegetable garden this weekend.
dybincka [34]

Answer:

The length is 16 ft, and the width is 3 ft.

Step-by-step explanation:

Let L = length & let W = width.

The perimeter of a rectangle is

P = 2(L + W)

The area of a rectangle is

A = LW

We know the perimeter and the area, so we substitute those values int he equations above and we switch sides in both equations.

Perimeter: 2(L + W) = 38

Divide both sides by 2:

L + W = 19

Area: LW = 48

We have a system of two equations in two unknowns:

L + W = 19

LW = 48

Solve the first equation for L and substitute it into the second equation.

L = 19 - W

(19 - W)W = 48

19W - W^2 - 48 = 0

Multiply both sides by -1, and rearrange the order of the terms.

W^2 - 19W + 48 = 0

(W - 16)(W - 3) = 0

W - 16 = 0 or W - 3 = 0

W = 16 or W = 3

Use W = 3 to find L

L = 19 - W

L = 19 - 3

L = 16

Answer: The length is 16 ft, and the width is 3 ft.

3 0
3 years ago
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