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4 years ago

4.7+x=3.1 Solve for x . x=

2 answers:

7 0

X= -1.5

4.7 + X = 3.1
move the x and it becomes
4.7 = 3.1- X
then divide 4.7 by 3.1. then you get 1.5 but you cannot have a negative variable so you make the 1.5 negative !

Harman [31]4 years ago

5 0

<span>4.7 + x = 3.1

Subtract 4.7 from both sides to isolate x

x = 3.1 - 4.7 = -1.6</span>

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What is 4 1/2 as a decimal number

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Answer:

4.25

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3 years ago

Simplify -4 + 2x + 8x

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Combine like terms

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3 years ago

Hey can u help me with this

Liula [17]

Answer:

24 cubes

Step-by-step explanation:

First, we need to find the volume of the prism. To do this, we multiply the length by the width by the height, so $1 \cdot 2 \cdot \frac {3}{2} = 3$ . Then, we need to find the volume of one small cube, which has a length, width, and height of $\frac {1}{2}$ , so $\frac {1}{2} \cdot \frac {1}{2} \cdot \frac {1}{2} = \frac {1}{8}$ . Then we divide the volume of the prism by the volume of a cube to find how many could fit, so $3 \div \frac {1}{8} = 24.$

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3 years ago

Three pieces of wood measure 20 cm, 41 cm, 44 cm. If the same amount is cut off each piece, the remaining length can be formed i

SIZIF [17.4K]

The length that can be cut off from the three given pieces of wood equally to form a right triangle is 5 cm

Given parameters:

dimension of the three pieces of wood = 20 cm, 41 cm and 44 cm

To find:

the length that is cut off to form a right triangle

let the length that is cut off from each of the wood = y

From Pythagoras theorem, we will have the following equation.

$(44-y)^2 = (20-y)^2 + (41-y)^2\\\\expand \ the \ equation \ as \ follows;\\\\1936 - 88y + y^2 = 400 - 40y + y^2 + 1681 - 82y + y^2\\\\simplify \ by \ collecting \ similar \ terms \ together\\\\(1936 - 400- 1681) + (-88y + 40y+ 82y) + (y^2 - 2y^2) = 0\\\\-145 +34y - y^2 = 0\\\\multiply \ through \ by \ (-1)\\\\y^2-34y + 145 = 0\\\\factorize \ the \ above \ quadratic\ equation\\\\y^2 -5y - 29y + 145 = 0\\\\y(y - 5) -29(y - 5)=0 \\\\(y -5)(y-29) = 0\\\\y = 5 \ \ \ or \ \ \ \ y = 29$

Since the least measurement of one of the pieces of the wood is 20 cm, we cannot cut off 29 cm.

Thus, the highest amount we can cut off equally is 5 cm

learn more here: brainly.com/question/15808950

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3 years ago

Write an equation (y=mx+b) through the points: (3,-1) and (8,9)

Advocard [28]

Answer:

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Step-by-step explanation:

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3 years ago