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jeyben [28]
3 years ago
13

Solve 15 and 21, will give BRAINLIST!!

Mathematics
2 answers:
Stolb23 [73]3 years ago
5 0
The answer for 1 is 40/2=20
xeze [42]3 years ago
4 0

Answer:

Step-by-step explanation:

<h2>4/x=2/10</h2>

cross multiplication:

4*10=2*x

40=2x

x=40/2=20

<h2>w/2 = 4.5/6.8</h2>

6.8w=2(4.5)

6.8w=9

w=9/6.8=1.32352941

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i was doing this task in math and I came across this: x-12x=0.88x . can someone plz explain why is this equal to this? I underst
valkas [14]

1x-12x=0.88x

1x-12x=0.88x

11x=0.88x

-11x=0.88x-0.88x

-11.88x=0x

-11.88x=0

Isolate x

3 0
2 years ago
Chang knows one side of a triangle is 13 cm. Which set of two sides is possible for the lengths of the other two sides
cestrela7 [59]

Answer:

Choice D - 8cm and 9cm.

Step-by-step explanation:

The other sides are not greater than 13.

A: 5 + 8 = 13

B: 6 + 7 = 13

C: 7 + 2 = 9

However, <u>D is greater than 13 and is the correct answer.</u>

D: 8 + 8 = 16.

3 0
3 years ago
In the number 7,890,432, name the digit located in each of these positions.
alina1380 [7]
A=4 B=7 C=9 D=3 E=8 F=0
3 0
3 years ago
Read 2 more answers
A region R in the xy-plane is given. Find equations for a transformation T that maps a rectangular region S in the uv-plane onto
ruslelena [56]
X(u, v) = (2(v - c) / (d - c) + 1)cos(pi * (u - a) / (2b - 2a))
y(u, v) = (2(v - c) / (d - c) + 1)sin(pi * (u - a) / (2b - 2a))

As v ranges from c to d, 2(v - c) / (d - c) + 1 will range from 1 to 3, which is the perfect range for the radius. As u ranges from a to b, pi * (u - a) / (2b - 2a) will range from 0 to pi/2, which is the perfect range for the angle. So, this maps the rectangle to R.
6 0
3 years ago
pleas help on the second ASAP it was due yesterday.. i dont even understand how to do any of it and i will give brainliest &lt;3
aliya0001 [1]

Answer:

3x^{4}

Step-by-step explanation:

I suggest looking lessons on it online if you don't understand... It's hard to do your work especially if you don't understand it. Or if your online, go to past lessons or something.

6 0
3 years ago
Read 2 more answers
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