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nikklg [1K]
3 years ago
5

Please explain I need help with all these

Mathematics
1 answer:
sergey [27]3 years ago
3 0
For all of these you're trying to solve for the variable. The variable is usually a number or symbol.

11) -44+n=36
Step one would be to add 44 to both sides of the equation.

N=80

12) -36=p-91
Step one would be to add -91 to both sides of the equation.

P=55

13) X-225=671
Step one you be to add 225 to both sides of the equation. Although it may seem difficult because of the big numbers, it's the same technique.

14) 19=c-(-12)
Step one on this equation will be a little different. Because there are two negative signs (-), they turn into a plus sign. Remember, two negative signs make a positive sign.

19=c+12

Now you just subtract 12 from each side of the equation.

6=C
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Please, quickly. Sorry for the poor picture quality.
Nimfa-mama [501]

Answer:

<2 is 50º

Step-by-step explanation:

you first want to find what x is, so you would put the two equations in an (equation)=(equation) and get x and the number across from each other, that would be x=15º. you then plug in the 15 to the equation, and solve that, resulting in 130º. The angle is going to be 180 in total, so subtract the 130º from 180º and you would get 50º

3 0
3 years ago
What is the effect on the graph of the parent function f(x)=x when f(x) is replaced with f(x-7)
Stels [109]

Answer:

I think it shifts horizontally by 7 units to the right. Not completely sure though.

Step-by-step explanation:

8 0
3 years ago
Two less than three times a number is the same as six more than twice the number. Write an equation and solve to find the number
lapo4ka [179]

Answer: 8

Step-by-step explanation:

Let the number be represented by x.

Two less than three times a number is the same as six more than twice the number. This will be:

(3 × x) - 2 = (2 × x) + 6

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Collect like terms.

3x - 2x = 6 + 2

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The number is 8

8 0
3 years ago
What is the volume of a frustum of a rectangular pyramid if one base has measurements 6 ft. × 8 ft., the other base has measurem
RoseWind [281]
To solve this, we use the formula for the volume of the frustum of a cone which is expressed as:

<span>V= (H/6)[WL + (W+a)(L+b) + ab]
</span>V = 3/6 [(6 ft. × 8 ft.) + (6 + 14)(18 + 8) + (<span>14 ft. × 18 ft.)]
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7 0
3 years ago
Read 2 more answers
Sand and gravel are mixed in the ratio 5:3 to form ballast.
r-ruslan [8.4K]
<h3>Answer:  1250 kg of sand</h3>

Work Shown:

sand/gravel = 5/3

x/750 = 5/3

3x = 750*5

3x = 3750

x = 3750/3

x = 1250

8 0
2 years ago
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