2 years ago

What is the solution to the inequality.

Mathematics

1 answer:

Novosadov [1.4K]2 years ago

7 0

Answer:

a. x<7 and x>-7

Step-by-step explanation:

√x²<√49

-7<x<7 hope this helps

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A human heart beats an average of 80 beats per minute. How many heart beats is this in a day

vovangra [49]

Answer:

115200

Step-by-step explanation:

80 Beats Per Minute x 60 Minutes (1 hour) x 24 Hours (1 Day) = 115200

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3 years ago

X + y = 152, 8.5x + 12y = 1,656 How many hats were sold?

Elodia [21]

Answer:

x = 48 and y = 104

Step-by-step explanation:

Given equations are:

$x+y = 152\\8.5x+12y=1656$

From equation 1:

$x = 152-y$

Putting the value of y in equation 2

$8.5(152-y)+12y = 1656\\1292-8.5y+12y = 1656\\3.5y+1292 = 1656\\3.5y = 1656-1292\\3.5y = 364\\\frac{3.5y}{3.5} = \frac{364}{3.5}\\y = 104$

Now we have to put the value of y in one of the equation to find the value of x

Putting y = 104 in the first equation

$x+y = 152\\x+ 104 = 152\\x = 152-104\\x = 48$

Hence,

The solution of the system of equations is x = 48 and y = 104

The value of variable which was assumed for number of hats, is the total number of hats.

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3 years ago

Which line is parallel to y= = 1/3x + 7?

Monica [59]

The answer is the third choic, or the line with the same slope.

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4 years ago

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Annette [7]

Answer:

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Step-by-step explanation:

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Solve the equation. 2log10^3x = 4

stepladder [879]

First evaluate the exponent to 2 log(1000x)=4
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