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3 years ago

3\sqrt{13} +7\sqrt{13}

Mathematics

1 answer:

Reil [10]3 years ago

3 0

Answer: x=1 and y=14

Step-by-step explanation: it Welcome sis ✌

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If f(x)= x2/x+3, find f(x+h)?

kompoz [17]

f(x+h) = $\frac{x^{2}+2xh+h^{2} }{x+h+3}$

Step-by-step explanation:

Given,

f(x) = $\frac{x^{2} }{x+3}$

To find the value of f(x+h) we need to replace x by x+h

Hence,

f(x+h) = $\frac{(x+h)^{2} }{x+h+3}$

= $\frac{x^{2}+2xh+h^{2} }{x+h+3}$

[Here, we apply the formula of $(a+b)^{2}= a^{2} +2ab+ b^{2}$ ]

6 0

3 years ago

Two sides of an acute triangle measure 5 inches and 8 inches. The length of the longest side is unknown.

nordsb [41]

The greatest whole possible whole number length of the unknown side is 9 inches

Solution:

Two sides of an acute triangle measure 5 inches and 8 inches

The length of the longest side is unknown

We have to find the length of unknown side

The longest side of any triangle is a hypotenuse

For a acute triangle we know:

If c is the longest side of a acute triangle, a and b are other two sides of a acute triangle then the condition that relates these three sides are given as:

$c^2$

Here in this sum,

a = 5 inches

b = 8 inches

c = ?

Substituting we get,

$c^2< 5^2+8^2\\\\c^2 < 25 + 64\\\\c^2 < 89\\\\c < 9.4$

On rounding to nearest whole number,

c < 9

Hence, to the greatest whole possible whole number length of the unknown side is 9 inches

8 0

3 years ago

Read 2 more answers

This is about fractions i have three questions: 1} subtract 3 1/4 from 4 2/3 2}simplify 7 3/4 divided by 8/62 3} subtract the su

Scrat [10]

Answer:

1 5/12
60 1/16
11/35

Step-by-step explanation:

1) 4 2/3 - 3 1/4 = (4 -3) +(2/3 -1/4) = 1 + (8/12 -3/12) = 1 5/12

2) (7 3/4)/(8/62) = (31/4)(62/8) = (31/4)(31/4) = 961/16 = 60 1/16

3) (2 5/7 +3 2/3) -(4 2/3 +1 2/5) = (2 + 3 -4 -1) +(5/7 +2/3 -2/3 -2/5)

= 5/7 -2/5 = (25 -14)/35 = 11/35

_____

Notes on arithmetic with fractions

It can be helpful to make use of a common denominator when adding or subtracting fractions. Your knowledge of multiplication tables can help you find a suitable common denominator. Without too much effort, you can use the product of denominators as the common denominator, though doing that may require you to reduce the resulting fraction.

If you need a formula for addition or subtraction of fractions, this is it:

a/b + c/d = (ad +bc)/(bd)

A sign can be attached to any of these numbers, so that ...

a/b - c/d = (ad -bc)/(bd)

Using this formula is how we worked problem 3. It is essentially the same as rewriting each fraction to use the common denominator bd:

a/b = ad/(bd)

c/d = bc/(bd)

Of course, division of fractions (or any sort of division, actually) is the same as multiplying by the inverse (reciprocal) of the denominator. The mantra "invert and multiply" can be a useful reminder of this.

5 0

3 years ago

Solve this equation for x 0.79=log x

Vitek1552 [10]

X=6.16595001.........

8 0

3 years ago

Help will give brainlyist

denpristay [2]

Answer:

1. 25%

2. 150%

3. 3%

4. 75%

5. 60%

6. 210%

7. 10%

8. 1%

9. 40%

10. 87.5

11. 105%

12. 2%

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers