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3 years ago

If 8km=5 miles,how many miles is 48km

Mathematics

2 answers:

Otrada [13]3 years ago

7 0

Answer:

30 miles

Step-by-step explanation:

Minchanka [31]3 years ago

4 0

Answer:

48 km is equal to 30 miles.

Step-by-step explanation:

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Rachel spent $12 for socks. This was $3 more than one-fourth what she spent on shoes. Which equation, when solved for x, gives t

lilavasa [31]

Answer:

B) 4X + 3 = 12

Step-by-step explanation:

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4 years ago

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What is 7 and 3/4 minus 2 and 1/3 ? How do I show this ?<br />

leonid [27]

First off, these fractions will work to your advantage if they are in the form of an improper fraction. 7 and 3/4 as an improper fraction is 31/4. 2 and 1/3 as an improper fraction is 7/3. Now, in order to add and subtract fractions, they need to have a common denominator. 3 and 4 share a common multiple of 12. 31/4 = 93/12. (You need to multiply by the same number in the numerator as you did in the denominator. Multiply 4 by 3 to get 12. Multiply 31 by 3 to get the new numerator.) 7/3 = 28/12 (Multiply by 4 to get 12 in the denominator. Multiply 4 by 7 for the numerator.) 93/12 -28/12 = 65/12 This fraction can also be expressed as a mixed number. 5 and 5/12.

7 0

3 years ago

Look at the function below. f(x)=−x2−2x+8

enyata [817]

Answer:

f(x) = -1(x+1)² + 9

Step-by-step explanation:

f(x) = -x² - 2x + 8

This is a down-opening parabola. Put the equation into vertex form. The y-coordinate of the vertex is the maximum.

factor out the leading coefficient

f(x) = -1(x²+2x) + 8

Complete the square

coefficient of x term: 2

divide in half: 1

square it: 1²

use 1² to complete the square:

f(x) = -1(x²+2x+1²) + 1² + 8

f(x) = -1(x+1)² + 9

vertex (-1,9)

maximum value of f(x) = 9

7 0

3 years ago

What is the value of x in the following equation 1/5x=5^8 <br> A)-8 B) 8 C)40 D)-40

Monica [59]

The correct question is
What is the value of x in the following equation (1/5)^x=5^8

Applying logarithms both members
log(1/5)^x=log(5^8)
x*log(1/5)=8*log(5)
x=8*log(5)/log(1/5)

we know that
log (1/5)----> log (1)-log (5)----> 0-log (5)-----> -log (5)
so
x=8*log(5)/-log (5)------> x=-8

the answer is
-8

7 0

3 years ago

Which expression represents the volume, in cubic units, of the composite figure?

Kipish [7]

The missing figure is attached

The expression represents the volume in cubic units of the composite figure is (Four-third)π(10)³ + π(10)²(28) ⇒ 1st answer

Step-by-step explanation:

The figure consists of