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3 years ago

Please help me Solve for x. Have to show work

Mathematics

1 answer:

REY [17]3 years ago

6 0

A -17 3/4< x so u have to simplify-17 3/4 by multiply 17*4=68+3=71/4 so the x stands for -71/4 and it has to be 4 as the denominator because it it the denominator for the question.
B, C, D are also the same answer-17/4
And for 15 3/4<-2+ x it is also the same answer

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3 years ago

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3 years ago

HELP 10 POINTS and brainliest! What is the value of X?<br> △MAH∼△WCF .

german

The value of x is 23.

Simply find the scale factor or what was used to dilate △MAH to produce △WCF.

Use the equation copy over the original,

$k = \frac{c}{o} = \frac{15.5}{62}$

Reduce,

$\frac{15.5}{62} = \frac{1}{4} = 0.25$

So our scale factor is ¼ or 0.25

So if we use it and multiply the corresponding side of the missing side with the original we get,

$92 \times \frac{1}{4} = 23$

Therefore 23 is our missing side! !

~~

I hope that helps you out!!

Any more questions, please feel free to ask me and I will gladly help you out!!

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3 years ago

Find the values of A & B so that x^4+x^3+ax+b is divisible by x^2+1

DaniilM [7]

Answer:

a = 1 b = -1.

Step-by-step explanation:

Suppose the quotient when you divide x^4+x^3+ax+b by x^2 + 1 is

x^2 + ax + b then expanding we have:

(x^2 + 1)(x^2 + ax + b)

= x^4 + ax^3 + bx^2 + x^2 + ax + b

= x^4 + ax^3 + (b + 1)x^2 + ax + b Comparing this with the original expression:

x^4 + x^3 + 0 x^2 + ax + b Comparing coefficients:

a = 1 and b+ 1 = 0 so b = -1.

6 0

3 years ago

-Ready

AleksandrR [38]

Answer:

80%

Step-by-step explanation:

Please consider the complete question:

Micah is preparing for a piano recital. He practices for 50 minutes on Monday and 90 minutes on Wednesday. By how much did she increase the time she practiced each day?

We will use percent change formula to solve our given problem.

$\text{Percent change}=\frac{\text{Final value}-\text{Initial value}}{\text{Initial value}}\times 100\%$

Upon substituting our given values, we will get:

$\text{Percent change}=\frac{90-50}{50}\times 100\%$

$\text{Percent change}=\frac{40}{1}\times 2\%$

$\text{Percent change}=80\%$

Therefore, Micah had increased the time by 80%.

5 0

3 years ago