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siniylev [52]
3 years ago
13

Expand and simplify 5(X-3)-2(2x+1)

Mathematics
1 answer:
Debora [2.8K]3 years ago
7 0
<span>5(x-3)-2(2x+1)
5x - 15 - 4x - 2
(5x - 4x) - 15 - 2 
x - 15 - 2
x - 17

The answer is: x - 17.</span>
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I need the answer fast please
iogann1982 [59]

Answer:

A'

Step-by-step explanation:

It is A' because they are corresponding angles, it is the same exact shape it has just been translated to a different area of the graphic plane.

If my answer is incorrect, please notify me and I'll assess what it was that I did wrong.

3 0
3 years ago
The ratio of the measures of the angles of a triangle is 3:4:8 what are the measures of the angles?
evablogger [386]

Answer:

36 and 48 and 96

Step-by-step explanation:

add 3+4+8=15

all of the angles in a triangle have to add up to 180

so 180÷15=12

now for this ratio, each part will equal 12

so we have to multiply each of the parts by 12

3×12=36

4×12=48

8×12=96

those are the measures of the angles

you can add them up again and see that they equal 180

you can try dividing and you will see that they also equal the ratio

5 0
3 years ago
Please solve these step-by-step!!
Ierofanga [76]

Answer:

For D. X= 3, or 0 but probably not 0

For the 2nd picture you sent,  x= -2, or -3

Step-by-step explanation:

So for D. you want to make sure you only have 1 Variable, and since we know y=x squared + 7x+5, we subsitute y for what it is equal to.

Then we refine the question, which takes it out to

x squared-3x+5=5 (because the 7x-10x = 3x)

We subtract 5 from both sides which leaves us with x Squared - 3x= 0

Which we then solve with the Quadratic formula. and we separate the solutions to get the different answers for 3, and 0

3 0
3 years ago
Multiply and give the answer in scientific notation: (2.3 x 10-3)(3 x 108) A) 6.9 x 105 B) 6.9 x 1011 C) 6.9 x 10-5 D) 6.9 x 102
Furkat [3]

Answer: A) is the right answer. 6.9\times10^{5}


Step-by-step explanation:

Given product : 2.3\times10^{-3}\times3\times10^8

To multiply above expression, first we need to combine like terms and then we need to use the law of exponents.

2.3\times3\times10^{-3}\times10^8\\=(2.3\times3)\times(10^{-3}\times10^8)\\=6.9\times10^{-3+8}......[\text{by law of exponents }a^n\cdot\ a^m=a^{m+n}]\\=6.9\times10^{5}

Thus, the answer is 6.9\times10^{5}.


8 0
3 years ago
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lyudmila [28]

Answer:

Incorrect

Step-by-step explanation:

The fraction of 6/12 all squared gives 36/144 36/36 and 144/36  reduces to 1/4.

8 0
3 years ago
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