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4 years ago

30 POINTS PLS HELP ASAP

Mathematics

2 answers:

padilas [110]4 years ago

4 0

m/10 + 4.7 = 3.7

hope it helps

Pie4 years ago

4 0

Answer:

m/10 + 4.7 = 3.7

Step-by-step explanation:

Given m = −10.

put the value of m = -10 in this equation

a) 5m + 5 = −40

5(-10) + 5 = -40

-50 + 5 = -40

-45 = -40

b) −42 + 3m = 72

-42 + 3(-10) = 72

-42 - 30 = 72

-72 = 72

c) m/2 + 21 = 15

(-10)/2 + 21 = 15

-5 + 21 = 15

16 = 15

d) m/10 + 4.7 = 3.7

-10/10 + 4.7 = 3.7

-1 + 4.7 = 3.7

3.7 = 3.7

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Solve the equation after making an appropriate substitution. X^6-98x^3=3375

Leni [432]

Rearrange $x^6-98x^3=3375$ to give

$x^6-98x^3-3375=0$

Let $x^3$ be a variable 'p' and so we can write $x^6$ as $x^6=(x^3)(x^3)=(p)(p)= p^2$

Rewrite the equation in terms of 'p'

$p^2-98p-3375 = 0$

where $a=1, b=-98, c=-3375$

using the quadratic formula $\frac{-b+ \sqrt{b^2-4ac} }{2a}$ and subsitute the value of $a, b, c$

$p_1= \frac{-(-98)+ \sqrt{(-98)^2-4(1)(-3375)} }{2} =125$

$p_2= \frac{-(-98)- \sqrt{(-98)^2-4(1)(-3375)} }{2} =-27$

There are two value of p; 125 and -27

Now we find the value of x

Earlier we substitute $x^3$ for $p$ and $x^6$ for $p^2$

When $p=125$ , $x= \sqrt[3]{125}=5$
When $p = -27, x= \sqrt[3]{-27}=-3$

So the final answer is the two values of x;

x = 5 OR x = -3

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3 years ago

A cylinder has a radius of 14 inches and a height of 10 inches. A rectangular prism has

aliya0001 [1]

Answer:

61.973

Step-by-step explanation:

let the unknow side be x

surf of prism = 2*(8*8+8x+8x) = 2*(64+16x) = 128+ 32x

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now solve for x, when

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3 years ago

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Lerok [7]

Answer: written below

Step-by-step explanation:

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3 years ago

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Serjik [45]

1. y = 2/3x - 5

2. 4x - 6y = 30

Divide 2. by 2

3. 2x - 3y = 15

Substitute 1. into 3.

4. 2x - 3(2/3x - 5) = 15

5. 2x - 2x + 15 = 15

6. 15 = 15

False. There are an infinite number of solutions.

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3 years ago

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postnew [5]

Answer:

Yes

I hope this answers your question!

Step-by-step explanation:

How do you estimate a division problem?

You can use multiplication to check your division answer this way.

1) Do the division problem.

2) Multiply the quotient times the divisor.

3) If there is a remainder, add it to the multiplication product.

4) Compare this answer to the dividend. They should be the same number (630 = 630).

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3 years ago