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Marina CMI [18]
3 years ago
5

The cost of an electrical gadget and the cost of a plumbing material were in the ratio 8:6 last year ,this year each cost was re

duced by GHÇ 4.00 and their ratio changed to 7:5 respectively . Taking the Initial cost of the electrical gadget to be GHÇp Calculate the value of p and q​

Mathematics
1 answer:
ELEN [110]3 years ago
7 0

Answer:

P=25 q= -31

Step-by-step explanati

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The coordinate grid shows points A through K. What point is a solution to the system of inequalities?
Eddi Din [679]

Answer:

Option D) F

Step-by-step explanation:

we have

y < -2x+10 -----> inequality A

The solution of the inequality A is the shaded area below the dashed line y=-2x+10

The y-intercept of the dashed line is (0,10)

The x-intercept of the dashed line is (5,0)

y < \frac{1}{2}x-2 ----> inequality B  

The solution of the inequality B is the shaded area below the dashed line y=\frac{1}{2}x-2

The y-intercept of the dashed line is (0,-2)

The x-intercept of the dashed line is (4,0)

The solution of the system of inequalities is the shaded area between the two dashed lines

see that attached figure

Remember that

If a ordered pair is a solution of the system of inequalities, then the ordered pair must lie on the shaded area of the solution

therefore

The solution are the points

E, F and G

8 0
3 years ago
F(x)=12x2-4x-8. G(x)=11x-6
AlekseyPX

Answer: Second option.

Step-by-step explanation:

Given the functions f(x) and g(x):

f(x)=12x^2-4x-8\\\\g(x)=11x-6

You need to divide them in order to find (\frac{f}{g})(x) asked in the exercise. Then:

(\frac{f}{g})(x) =\frac{12x^2-4x-8}{11x-6}

Now, it is important to remember that, by definition, the division by zero is not defined. Therefore, the denominator of the function cannot be zero.

Let's find the value of "x" for which the denominator of the function would be zero:

1. You need to make the denominator equal to zero:

11x-6=0

2. Finally, you must solve for "x":

11x=6\\\\x=\frac{6}{11}

Therefore, as you can see, the answer is:

 (\frac{f}{g})(x) =\frac{12x^2-4x-8}{11x-6}, x=\frac{6}{11}

4 0
3 years ago
Please answer this multiple choice question correctly for 30 points and brainliest!!
Ilia_Sergeevich [38]

Answer:

  B.  12n + 2(25) ≤ 100

Step-by-step explanation:

The inequality you are asked for is intended to express ...

  shirt cost + pant cost (is less than or equal to) Sandy's budget

The cost of n shirts at $12 each will be 12n. The cost of 2 pants at $25 each is 2(25). Then the inequality is ...

  12n + 2(25) ≤ 100 . . . . . matches choice B

8 0
3 years ago
Estimate the awnser to 17 x 193
8_murik_8 [283]
I think i know this one. it's 3,281.
8 0
3 years ago
Read 2 more answers
Which expressions are completely factored? Select each correct answer. 30a6−24a2=3a2(10a4−8) 16a5−20a3=4a3(4a2−5) 12a3+8a=4(3a3+
irinina [24]

When factoring an expression, we need to identify the Greatest Common Factor of the expression (GCF). By definition, GCF is the product of prime factors involved with its Lowest Exponent.

We need to divide each term by the GCF to get the expression inside the parenthesis.

30a^6-24a^2\\ GCF\; is \; 6a^2\\ \\ 30a^6-24a^2=6a^2(\frac{3a^6}{6a^2} -\frac{24a^2}{6a^2} )=6a^2(5a^4-4)\\ ---------------------\\ \\ 16a^5-20a^3\\ GCF \; is \; 4a^3\\ \\ 16a^5-20a^3=4a^3(\frac{16a^5}{4a^3} -\frac{20a^3}{4a^3})=4a^3(4a^2-5) \\ ---------------------\\ \\ 12a^3+8a\\ GCF \; is \; 4a\\ \\ 12a^3+8a=4a(\frac{12a^3}{4a}+\frac{8a}{4a})=4a(3a^2+2)\\   ---------------------\\ 24a^4+18\\GCF \; is \; 6\\\\24a^4+18=6(\frac{24a^4}{6} +\frac{18}{6})=6(4a^4+3) \\    ---------------------

Conclusion:

From above we can conclude that the below expressions are factored completely

16a^5-20a^3=4a^3(4a^2-5)\\ \\ 24a^4+18=6(4a^4+3)

6 0
3 years ago
Read 2 more answers
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