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Zinaida [17]
3 years ago
11

-2w = -18 solve for w

Mathematics
2 answers:
Dafna11 [192]3 years ago
4 0

Answer:

9

Step-by-step explanation:

Isolate w by dividing by -2.

bija089 [108]3 years ago
4 0

Answer:

w = 9

Step-by-step explanation:

First, you divide -18 by -2w.

Since you're dividing by a negative, you know that your answer will be positive.

Therefore, the answer is w = 9.

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4 0
3 years ago
What is the length of if ?<br><br> 8 in.<br> 8.75 in.<br> 10.25 in.<br> 14 in.
quester [9]

Answer:

Diagram attached

AJ = 8.75 in.  

Step-by-step explanation:

Since triangles HBA & HKJ are similar,    

BH/AH = KH/JH  

3 in /5.25 in = 8 in /JH  

JH = 14 in  

JA = JH - AH = JH - 5.25 in = 8.75 in


HJ = 14 in.

AJ = 14 in - 5.25 in  

AJ = 8.75 in.  

7 0
3 years ago
The height of a rectangular prism is half its width The width of the prism is 1/3 of its length If the width of the prism is 3 c
Leno4ka [110]

Answer:

40.5 centimeters.

Step-by-step explanation:

Given:

The width of the prism is 3 centimeters.

The width of the prism is 1/3 of its length.

The height of a rectangular prism is half its width.

To find:

<u>Volume of a rectangular prism = ?</u>

Solution:

Width of the prism = 3 cm

As given, height of a rectangular prism is half its width.

height of a rectangular prism = \frac{1}{2} \times3=\frac{3}{2} \ cm

Similarly, as given, the width of the prism is 1/3 of its length.

Width of the prism = \frac{1}{3}\  of\ length

                            3=\frac{1}{3}\times length

By multiplying both sides by 3

                            3\times3=\frac{1}{3} \times3\ length\\9= length\\

Thus, length of prism = 9 cm

Now, as we know:

Volume\ of\ rectangular\ prism=length\times breadth\times height

                                                 =9\times3\times\frac{3}{2} \\\\ =\frac{81}{2} \\ \\ =40.5\ cm

Therefore, the volume of a rectangular prism is 40.5 centimeters.

3 0
3 years ago
Which points are coplanar and non ol linear
JulijaS [17]

Answer:

<h2>COPLANAR:</h2>

Point A, C and D

<h2>NON- COLLINEAR:</h2>

Point B

Step-by-step explanation:

{hope it helps

7 0
3 years ago
A map has a scale of 1 in : 3 km. If the actual distance is 15 km, what is the distance on the map?
Black_prince [1.1K]

Answer:

5 in.

Step-by-step explanation:

The ratio of map distance to real distance is 1 in : 3 km meaning that 1 inch on the map describes 15 km in real life.

15 km is 5 times 3 km, so the map distance is 5 times 1 in., or 5 in.

1 in. x 5 : 3 km x 5

This is a "school math" problem where things come out nicely!  Another way to look at this is with equivalent fractions.

\frac{\text{1 in}}{\text{5 km}} = \frac{\text{m}}{\text{15 km}}

"cross multiply"

5m = (15)(1)\\5m=15\\m=3 \text{ in.}

4 0
2 years ago
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