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harina [27]
3 years ago
15

What is the value of x?​

Mathematics
1 answer:
Ivan3 years ago
5 0

Answer:

Not enough details

Step-by-step explanation:

The third angle should be given of more should be explained about the type of triangle

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Find the perimeter of the window to the nearest tenth with a radius of 20 cm
Anit [1.1K]
I wonder what shape the window is? It has a radius so I expect a circle but you use the word perimeter which is usually reserved for shapes with sides.

So my guess is you are looking for the circumference of a circular window with radius 20. The circumference is given by (pi)d where d is the diameter. The diameter is twice the radius so 40. We use 3.14 to approximate pi.

That makes the circumference (the distance around the circle) = (40)(3.14)=125.6
5 0
3 years ago
Doing a Pre-Algebra Unit Test on Khan Academy
larisa [96]

Answer:

-8,8

Step-by-step explanation:

since y=8 that add 8 to both sides to get rid of the -y.  you would then get -4x=32.  divide 32 by -4 and you would get -8 so the missing value would be -8

8 0
3 years ago
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Sally has $21.40 in dimes and quarters. There are 100 coins in all. How many of each coin does she have?
lyudmila [28]

x = dimes

y = quarters

We also know:

Dimes: 0.10

Quarters: 0.25

100 = x + y

So, 0.10x + 0.25y = 100

And, y = 100 - x

Let’s use substitution:

0.10x + 0.25( 100 - x ) = 100

= 0.10x + 25 - 0.25x = 100

= 25 - 100 = 0.25x - 0.10x

= (-75) = 0.15x

x = (-75) divide by 0.15

x = (-500)

8 0
4 years ago
I will give brainiest to whoever answers correctly !!
vichka [17]

Answer:it’s b

Step-by-step explanation:

6 0
3 years ago
Find the smallest integer that satisfies the inequalities
sammy [17]

Answer:

a. x> 23 /3

b: x< 13/5

Step-by-step explanation:

A: Step 1: Subtract x from both sides.

4x−15−x>x+8−x

3x−15>8

Step 2: Add 15 to both sides.

3x−15+15>8+15

3x>23

Step 3: Divide both sides by 3.

<u>x> 23/3</u>

B: Step 1: Subtract 7x from both sides.

2x+13−7x>7x−7x

−5x+13>0

Step 2: Subtract 13 from both sides.

−5x+13−13>0−13

−5x>−13

Step 3: Divide both sides by -5.

Answer:  x< 13/5

3 0
3 years ago
Read 2 more answers
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