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Soloha48 [4]
3 years ago
8

0.9<2x-0.7<1.5

2x - 0.7 < 1.5" alt="0.9 < 2x - 0.7 < 1.5" align="absmiddle" class="latex-formula">
​
Mathematics
1 answer:
Nitella [24]3 years ago
3 0

Answer:

0.8<x<1.1

Step-by-step explanation:

Take 0.9<2x-0.7<1.5 add everything by 0.7 to get 1.6<2x<2.2 then divide everything by 2 to get 0.8<x<1.1

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Twice a number plus twice a second number is 310. The difference between the numbers is 55
agasfer [191]

Answer:

x = 105

y = 50

Step-by-step explanation:

To solve this, try writing it out as an equation/expression first.

When you do, you should get something like this:

2x + 2y = 310

x - y = 55

This is a system of equations. To solve this, we're going to multiply the second equation [x - y = 55] by 2.

2(x - y = 55) = 2x - 2y = 110

Now, subtract your new equation from the first one [2x + 2y = 310]

2x + 2y = 310

-2x + 2y = -110

//<em>If you</em>'<em>re wondering why I changed the signs of the new equation, I multiplied our new equation [2x - 2y = 110] by -1 since we're subtracting//</em>

When you're done subtracting, the "2x" and "-2x" cancel out, so you're left with:

4y = 200

Now, simply solve for "y" by dividing both sides by 4.

4y = 200

y = 50

Now that we know y's value, substitute it into one of our original equations to solve for x.

//<em>I'm gonna plug y into the second equation [x - y = 55] just because it's easier, but you can plug it into the first one as well and get the same answer//</em>

When we plug it in, we get:

x - (50) = 55

To solve for "x," we must get rid of "-50." To do this, add 50 to both sides.

x - 50 = 55

x = 105

<u>So, x = 105 and y = 50</u>

4 0
3 years ago
Find a formula for geometric series that begins with 28, 98, 343,...​
otez555 [7]

Answer:

Step-by-step explanation:

In a geometric series, the successive terms differ by a common ratio which is determined by dividing a term by the preceding term.

The formula for determining the nth term of a geometric progression is expressed as

Tn = ar^(n - 1)

Where

a represents the first term of the sequence.

r represents the common ratio between successive terms in the sequence.

n represents the number of terms in the sequence.

From the seies shown,

a = 28

r = 98/28 = 343/98 = 3.5

The formula representing the nth term of the given sequence would be expressed as

Tn = 28 × (3.5)^(n - 1)

6 0
2 years ago
Plzz hel am timed which number is composite
mezya [45]
15 is compostit bevuasw (3x5=15) (1x15)
8 0
3 years ago
Read 2 more answers
a function f(x) is described by the ordered pair (x,y). if given the function is translated 2 units to the right and then reflec
OleMash [197]
The ordered pairs would be (x-2, -y).

Translating a graph to the right subtracts the number of units from the x-coordinate.

Reflecting across the x-axis negates the y-coordinate.
3 0
2 years ago
What value of x is in the solution set of 2x – 3 &gt; 11 – 5x?
Alekssandra [29.7K]
2x - 3 \ \textgreater \  11- 5x\\&#10;7x\ \textgreater \ 14\\&#10;x\ \textgreater \ 2

4
3 0
3 years ago
Read 2 more answers
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