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-Dominant- [34]
4 years ago
7

Please show your work with each expression. Simplify.

Mathematics
1 answer:
Alina [70]4 years ago
6 0
(replace the variables) 6(9)-2(5)^2
(simplified) 54-10^2.... 54-100=-46
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(1). -4 – x=3x +6
Olin [163]

Answer: <em>Hey, It's me, Lily!!</em>

Step-by-step explanation:

1) x = −5/2

2) x = 4

3) x = 5

4) x = 6

5) x = 7

                                  <u>Hope This Helps!! (^ '--')</u>

6 0
3 years ago
Read 2 more answers
Bill and susan have ages that are consecutive odd integers.The product of their ages 438.Which equation could be used to find bi
zhuklara [117]

Answer:

4 x^{2} + 8 x - 435=0

Step-by-step explanation:

Let x be any natural number

Let the age of Bill= 2 x+ 1  years (Since age is odd integer)

Than, age of a Susan= 2 x + 3 years

Since ages are consecutive odd integers

According to question

(2 x+1)(2 x+ 3)= 438

4 x^{2} + 8 x + 3 = 438

4 x^{2} + 8 x + 3 - 438 =0

4 x^{2} + 8 x - 435=0

This equation can be used to find the ages of both

Hence, the correct answer is 4 x^{2} + 8 x - 435=0

5 0
3 years ago
In the exam 45% students failed and 550 students were successful. The total number of students appeared in the exam.
TEA [102]

Answer:

1000

Step-by-step explanation:

7 0
3 years ago
Variable y varies directly with variable x, and y = 6 when x = 9.
lesantik [10]
X and y are proportional hence when y is multiplied by a number, x is multiplied by the same number.

18=6*3 hence when y=18,x=9*3=27

x=27
5 0
3 years ago
Read 2 more answers
Write the equation for a line perpendicular to a line passing through points (-1,2) and (1,-8)
soldi70 [24.7K]

Answer:

Step-by-step explanation:

Slope m = (-8-2)/(1+1)=-10/2 = -5

Perpendicular slope-1/m = -1/-5 = 1/5

Equation of a line with perpendicular slope is

y-y1=(-1/m)(x-x1)

y - 2 = (1/5)(x+1)

y =2 +(1/5)(x+1)

3 0
3 years ago
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