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3 years ago

What's 7x + 14 + 2x + 3 = 2 ( x + 26 ). Show work

Mathematics

2 answers:

Blababa [14]3 years ago

8 0

Do you mean (x=26)? If so, 7 times 26 + 14 +2 times 26 + 3 = 2... i dont know...

elixir [45]3 years ago

5 0

9x + 20 = 2x + 52 then you subtract 2x from both side 7x + 20 = 52 and subtract the 20 from both sides 7x=52 divide both sides by 7. bam x = 52/7 which is a pretty weird number i probably made a lot of mistakes oh well

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Which of the following does NOT represent a straight line?

zhuklara [117]

Y=x^2+7. That one is a quadratic function. It represents a parabola.

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3 years ago

A bag has 1 red marble, 4 blue marbles, and 3 green marbles, Peter draws a marble randomly from the bag, replaces it, and then d

damaskus [11]

Answer:

1/4

Step-by-step explanation:

There is a total of 1+4+3 marbles = 8 marbles

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He replaces it

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P(blue 2nd draw) = blue /total = 4/8 = 1/2

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3 years ago

2.) Fill in the blank.

Montano1993 [528]

Answer:

E.) 1

Step-by-step explanation:

Firstly we will solve for L.H.S.

L.H.S. = $Csc^2\theta$

Since we know that $Csc^2\theta$ is the inverse of $Sin^2\theta$ .

So we can say that;

$csc^2\theta=\frac{1}{sin^2\theta}$

Now For R.H.S.

$Cot^2\theta+1$

Since we can rewrite $cot^2\theta$ as $\frac{cos^2\theta}{sin^2\theta}$ .

Now we can say that the R.H.S. is;

$\frac{cos^2\theta}{sin^2\theta}+1$

Now we add the fraction and get;

$\frac{cos^2\theta+sin^2\theta}{sin^2\theta}$

Now according to trigonometric identity;

$cos^2\theta+sin^2\theta=1$

So, $\frac{cos^2\theta+sin^2\theta}{sin^2\theta}=\frac{1}{sin^2\theta}$

Here,

$csc^2\theta=\frac{1}{sin^2\theta}$ and $Cot^2\theta+1$ = $\frac{1}{sin^2\theta}$ <em> </em>

L.H.S. = R.H.S.

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3 years ago

Hoy uploaded 56 photos to his computer. He put an equal number of photos in each of 8 folders. Which multiplication sentence cou

Dafna1 [17]

I would actually use division. So divide 56 by 8, and you'll get 7.

Or you can multiply 7 times 8 and get 56.

Hope this helps!
♤MidnightQueen

3 0

3 years ago

Read 2 more answers

How to change 7/10 to a percent

Ulleksa [173]

Answer:

70%

Step-by-step explanation:

since 7/10 is 0.7 as a decimal

you can then turn it into a percent by moving the decimal point two spots to the right

70 --> 70%

another way to do it is, to add zeros on both the numerator and denominator

then it is valued at 70/100

a percent is a number over 100

70 ---> 70%

your answer is 70%

hope this helps

7 0

2 years ago