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Alex17521 [72]
3 years ago
7

Help plz need asap!!

Mathematics
1 answer:
Otrada [13]3 years ago
6 0
For the first question, x = 4
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What is the answer to -2 3/4 ÷ 5/-9 ??
kolbaska11 [484]

Answer:23 /180

Step-by-step explanation:

−23/ 4 /5 /−9=  23 /180

7 0
3 years ago
Read 2 more answers
Determine which of the following graphs is the graph of 8x + 9y - 72.
Fittoniya [83]

Step-by-step explanation:

To figure out your x-intercepts and y-intercepts you have to redo the equation and make it equal to zero.

Step 1: 8x + 9y - 72 = 0

Step 2: 8x + 9y = 72

Now you can figure out your intercepts! As long as you use the STANDARD FORM EQUATION which is Ax + By = C

Y-INTERCEPT (vertical line): ( \frac{c}{b} , 0 )

X-INTERCEPT (horizontal line): ( 0 , \frac{c}{a} )

Insert your numbers how it shows in the standard form equation and you should get something like this:

Y-INTERCEPT: ( \frac{72}{9} , 0 )

<em>Simplified Y-INTERCEPT: </em>( 8 , 0 )

X-INTERCEPT:  ( 0 , \frac{72}{8} )

<em>Simplified X-INTERCEPT: </em><em> ( 0 , 9 )</em>

<em />

Insert that into your graph and you should be able to get your answer.

5 0
3 years ago
If y varies directly as x, find the direct variation equation for the situation
Phantasy [73]

Answer:

y = x / 7

Step-by-step explanation:

For us to get direct variation equation, we must introduce a constant term.

If y varies directly as x:

y ~ x

y = Kx

Where K, is the introduced constant.

Now let's solve to get a direct variation equation.

When y=3 , x=21

We substitute, y=3 and x=21 in the

y = Kx

3 = K 21

Divide both sides by 21

3 / 21 = K 21/ 21

K = 3/21

K = 1 / 7

Therefore, we introduce K = 1 / 7 into the mother equation.

y = 1/7 * x

y = x / 7

The direct variation equation for the situation:

y = x / 7

8 0
3 years ago
HELP PLEASE
bagirrra123 [75]
Table C is a non linear function
3 0
3 years ago
X
Fofino [41]

Answer:

100 resident/km

Step-by-step explanation:

In order to find the population density, we have to calculate the area of the township first.

We know that:

L = length = 5 km

W = width = 4 km

So the area of the township is

A=L\cdot W = 5 \cdot 4 = 20 km^2A=L⋅W=5⋅4=20km

2

Now we can find the population density by using

d=\frac{N}{A}d=

A

N

where N is the number of residents, and A is the area.

Substituting N = 2000, we find:

d=\frac{2000}{20}=100 res./km^2d=

20

2000

=100res./km

2

so, 100 residents per kilometer squared

7 0
3 years ago
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