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Debora [2.8K]
3 years ago
7

Please help!! Thank you!

Mathematics
1 answer:
lana66690 [7]3 years ago
3 0

Answer:

a= -2

b= 1

c= 4

d=0

Step-by-step explanation:

-5 times -2 is 10.

-5 times 1 is -5.

-5 times 4 is -20.

-5 times 0 is 0.

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<img src="https://tex.z-dn.net/?f=%20%7C7%20%2B%208x%7C%20%20%3E%205" id="TexFormula1" title=" |7 + 8x| &gt; 5" alt=" |7 + 8x|
ExtremeBDS [4]

The absolute value is defined as

|x|=\begin{cases}x&\text{if }x\ge0\\-x&\text{if }x

So for example, if <em>x</em> = 3, then |<em>x</em>| = |3| = 3, since 3 is positive. On the other hand, if <em>x</em> = -5, then |<em>x</em>| = |-5| = -(-5) = 5, since -5 is negative. The absolute value is always positive.

For the inequality |7 + 8<em>x</em>| > 5, you consider the two cases where the argument to the absolute value (the expression you find inside the bars) is either positive or negative.

• If 7 + 8<em>x</em> ≥ 0, then |7 + 8<em>x</em>| = 7 + 8<em>x</em>, so that

|7+8x|>5\implies 7+8x>5 \implies 8x>-2 \implies x>-\dfrac14

• Otherwise, if 7 + 8<em>x</em> < 0, then |7 + 8<em>x</em>| = -(7 + 8<em>x</em>), so that

|7+8x|>5\implies-(7+8x)>5\implies7+8x

The solution to the inequality is the union of these two intervals.

3 0
3 years ago
The Value of the 7 in 507,264 is ten times e value of the 7 in witch number?
mestny [16]
The answer is A
the answer is A


700 
what i did was i divided 7000 by 10 and i  got 700. then to check, i multiplied 700 by 10 and got 7000


4 0
3 years ago
Read 2 more answers
Does the point (2,3) satisfy the inequality 4x+3y&gt; 20
adell [148]
No, (2 , 3) does not satisfy the inequality 4x + 3y > 20.

See attached picture:

~

5 0
3 years ago
In one month Julian made 35 local phone calls and 20 long distance calls
V125BC [204]

Answer:

\frac{7}{4} local calls per 1 long distance call.

Step-by-step explanation:

Local calls =35

Long distance calls =20

For 20 long distance calls local call =35 For 1 long distance calls local call [tex]=\frac{35}{20} =\frac{7}{4}

8 0
3 years ago
You buy a storage case that holds 170 collectible die-cast cars. You have 137 die-cast cars. Write an inequality that describes
Murljashka [212]

Answer:

137 + x <= 170

Step-by-step explanation:

The following inequality will describe this scenario.

137 + x <= 170

the variable x in this scenario represents the total number of cars that you will purchase. This number is added to the number of toy cars that you already own which is 137. As long as this sum is less than or equal to 170 then your storage case will hold them.

4 0
3 years ago
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