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3 years ago

6 ice cream cones cost $10. How much will 9 cost?

Mathematics

1 answer:

jek_recluse [69]3 years ago

8 0

Answer:

15 dollars

Step-by-step explanation:

We can write a ratio to solve

6 cones 9 cones

------------ = --------------

10 dollars x dollars

Using cross products

6*x = 10 *9

6x = 90

Divide each side by 6

6x/6 = 90/6

x = 15

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The cost, C dollars, of hiring a taxi is given by the formula C=2.00+3/20n, where n is the number of tenths of a mile driven. Wh

Snezhnost [94]

C(n)=2.00+3.20n

If n = 4 miles:

C(4)=2+3.20(4)

C(4)=2+12.80

C(4)=14.80

The cost of the taxi is $14.80.

4 0

3 years ago

What is the radius of a circle whose equation is X^2 plus Y^2 -10X +6 X +18=0?

frosja888 [35]

ANSWER

The radius is 4

EXPLANATION

The given equation is:

${x}^{2} + {y}^{2} - 10y + 6x + 18 = 0$

We complete the square to get the expression in standard form:

${x}^{2} + 6x + {y}^{2} - 10y + 18 = 0$

${x}^{2} + 6x + 9 + {y}^{2} - 10y + 25 = - 18 + 9 + 25$

We factor using perfect squares to get:

${(x + 3)}^{2} + {(y - 5)}^{2} = 16$

This implies that,

${(x + 3)}^{2} + {(y - 5)}^{2} = {4}^{2}$

Comparing to

${(x - h)}^{2} + {(y - k)}^{2} = {r}^{2}$

The radius is r=4

3 0

3 years ago

Help fast please I going to fail

Scilla [17]

Answer:

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4 0

2 years ago

A high school basketball player attempted 42 free throws in a season. An analyst determined that the player successfully made 5

patriot [66]

The answer is 35 free throws

5 0

3 years ago

Read 2 more answers

What is negative 21/9 times negative 18/7

diamong [38]

Answer:

negative 21/9 times negative 18/7 is 6

Step-by-step explanation:

The phrase negative 21/9 times negative 18/7 can be written mathematically as

$-\frac{21}{9} \times -\frac{18}{7}$

Lets first convert the fractions into decimal values

$-\frac{21}{9}$ = -2.33

$-\frac{18}{7}$ = -2.57

Now on simplyfying

=> $-2.33 \times -2.57$

=> 5.988

=>6 (rounding off)

We will get a positive value because the multiplicative law states that the product of two negative number is positive

5 0

3 years ago