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Kisachek [45]
3 years ago
10

X-intercept and y-intercept of 9.3x+4.2y+3.9=0

Mathematics
1 answer:
hoa [83]3 years ago
7 0

Answer:

y intercept = -0.93

x intercept = -0.42

Step-by-step explanation:

To get x intercept, substitute y for 0 and solve for x.

To get y intercept, substitute x for 0 and solve for y.

X intercept:

9.3x + 4.2y + 3.9 = 0

9.3x + 4.2(0) + 3.9 = 0

9.3x + 3.9 = 0

Subtract 3.9 to get it on the other side

9.3x + 3.9 - 3.9 = 0 - 3.9

9.3x = -3.9

Divide 9.3 to get x by itself

(9.3x) / (9.3) = (-3.9) / (3.9)

x = -0.419355

Since there are some extra numbers, I will round it to the nearest hundredth to make it easier

-0.419355 = -0.42

Y intercept:

9.3x + 4.2y + 3.9 = 0

9.3(0) + 4.2y + 3.9 = 0

4.2y + 3.9 = 0

Subtract 3.9 to get it on the other side

4.2y + 3.9 - 3.9 = 0 - 3.9

4.2y = -3.9

Divide 4.2 to get y by itself

(4.2x) / (4.2) = (-3.9) / (4.2)

x = -0.928571

Round answer to nearest hundredths

-0.928571 = -0.93

Notes:

If your answer is an extended decimal number, round it to the nearest hundredths to make it easier

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Step-by-step explanation:

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8 0
2 years ago
1.70f+1.30s=37.90, 5.60f+5.40=147.20
melomori [17]

f= <span><span>−<span>0.764706s</span></span>+22.294118</span>

<span>f= <span>25.321429</span></span>

7 0
3 years ago
Read 2 more answers
Solve with interval notation Solve: 5 | x − 2 | + 4 &gt; 8
Gnesinka [82]

Answer:

x<6/5, x>14/5

Step-by-step explanation:

Steps

$5\left|x-2\right|+4>8$

$\mathrm{Subtract\:}4\mathrm{\:from\:both\:sides}$

$5\left|x-2\right|+4-4>8-4$

$\mathrm{Simplify}$

$5\left|x-2\right|>4$

$\mathrm{Divide\:both\:sides\:by\:}5$

$\frac{5\left|x-2\right|}{5}>\frac{4}{5}$

$\mathrm{Simplify}$

$\left|x-2\right|>\frac{4}{5}$

$\mathrm{Apply\:absolute\:rule}:\quad\mathrm{If}\:|u|\:>\:a,\:a>0\:\mathrm{then}\:u\:<\:-a\:\quad\mathrm{or}\quad\:u\:>\:a$

$x-2<-\frac{4}{5}\quad\mathrm{or}\quad\:x-2>\frac{4}{5}$

Show Steps

$x-2<-\frac{4}{5}\quad:\quad x<\frac{6}{5}$

Show Steps

$x-2>\frac{4}{5}\quad:\quad x>\frac{14}{5}$

$\mathrm{Combine\:the\:intervals}$

$x<\frac{6}{5}\quad\mathrm{or}\quad\:x>\frac{14}{5}$

5 0
3 years ago
The product of two numbers is 30. If one of the numbers is 15/, what is the other number?
PSYCHO15rus [73]

Answer:

The other number is 2 if the given number is 15.

Step-by-step explanation:

One of the numbers is 15, correct?

Let the other number be x.

15 × x = 30

x = 30/15

x = 2.

Let's check:

15 × 2 = 30.

30 = 30.

Correct!

3 0
3 years ago
Read 2 more answers
7 2\3+ (5 1\6-1 5\9)
lorasvet [3.4K]
Start off with: 5 1/6 - 1 5/9
turn it into an entire fraction: 31/6 - 14/9
make a common denominator (which is 18): 93/18 - 28/18 = 93 - 28 = 65/18
65/18 + 7 2/3 is the new equation
7 2/3 = 23/3
23/3 = 138/18
65/18 + 138/18 = 203/18
Simplify: 203/18 = 11 5/18
Answer: 11 5/18  
3 0
2 years ago
Read 2 more answers
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