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joja [24]
3 years ago
11

-7x + (-3x) + (-x)= how do i solve this

Mathematics
1 answer:
viva [34]3 years ago
3 0

Answer:

-11x

Step-by-step explanation:

-7x + (-3x) + (-x)

= -7x - 3x - x

=-11x

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If log subscript 2 left parenthesis 3 x minus 2 right parenthesis equals 4, then what is the value of x?
elena-14-01-66 [18.8K]

Answer:

x = 6

See image.

Step-by-step explanation:

Logarithms are just another way to write exponents. The base on the logarithm that is the small font subscript IS the base (normal font/on the line) of an exponential equation. The "answer" in the logarithmic equation is the exponent (small font/superscript) .It is just a triple shuffle. When the logarithmic equation cant be worked on to solve it, CHANGE IT to exponential form. See image.

6 0
2 years ago
What is the length of BC on in the right triangle below? Non
skad [1K]

Answer:

C. 20

Step-by-step explanation:

You need you use the Pythagorean Theorem to answer this. We are given the lengths of both legs of the right triangle.

a^2 +b^2 = c^2

If we plug the number given to us into the formula, we get

(12)^2 + (16)^2 = c^2

144 + 256 = c^2

400 = c^2

\sqrt{400} = C

20 = C

4 0
4 years ago
Ahmed learned: "To multiply a whole number by ten, just place a zero at the end of the number." For
Gala2k [10]

Answer:

a) 2x^4 + 8x^3 + x^2 + 3x

b) evaluate this polynomial at x = 10

Step-by-step explanation:

Hi!

a)

The product of a sum is the sum of the products, having said this:

(2x^3 + 8x^2 + x + 3) \times x = 2x^4 + 8x^3 + x^2 + 3x

b)

We can use the result from part a and consider x = 10.

First lets take the first polynomial

2x^3 + 8x^2 + x + 3 = 2(10)^3 + 8 (10)^2+10^1+3(10)^0

Knowing that every number (excepting probably 0, which could be undefined for some or 1 for others) to the power of 0 is one:

2x^3 + 8x^2 + x + 3 = 2(1000)+ 8(100)+10+3(1) = 2813

Which is the initial number

Now lets conisder the product of the polynomial times x and evaluate it at x=10:

(2x^3 + 8x^2 + x + 3) \times x = 2x^4 + 8x^3 + x^2 + 3x

(2(10)^4 + 8(10)^3 + 10^2 + 3(10) = 2 (10000) + 8(1000) + 100 + 3(10)

= 28130

We can now see that teh rule is treu because we can see the whole number as a sum of numbers from 0 to 9 multiplied by a power of 10, and when it is multiplied by 10, each power increases by one, and at the end, the final result is adding a zero at the end

6 0
3 years ago
Show your work everywhere you can!<br><br> solve for x. <br><br> c.x/5-12=48
Keith_Richards [23]
Remember you can do anything to an equation as long as you do it to both sides

x/5-12=48
add 12 to both sides
x/5+12-12=48+12
x/5+0=60
x/5=60
multiply bot sides by 5/1
5x/5=60 times 5
x times 5/5=300
x times 1=300
x=300
8 0
3 years ago
Read 2 more answers
Which best describes the strength of a model with an r value of 0:29?
Stells [14]
The correct answer is C
3 0
3 years ago
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