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Helen [10]
3 years ago
5

Do the following side lengths form a right triangle? 7,24,25

Mathematics
1 answer:
irinina [24]3 years ago
8 0

Answer:

yes

Step-by-step explanation:

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The equations 8x +4y = 32 and 16x +12y = 72 represent the cost for lunch and dinner for a family eating out on vacation. If x is
Nookie1986 [14]

Answer:

There are 3 adults in the family.

Step-by-step explanation:

The equations 8x + 4y = 32 and 16x + 12y = 72 represent the cost of lunch and dinner for a family in which x is the number of adults and y is the number of children.

We have to find the number of adults or the value of x by solving these equations.

equations are 8x + 4y = 32 -------(1)

16x + 12y = 72 --------(2)

Now we will multiply equation 1 by 3 and subtract it by equation 2.

(16x + 12y) -3(8x + 4y) = 72 - 96

16x + 12y - 24x - 12y = -24

(16x - 24x) + (12y - 12y) = -24

-8x = - 24

8x = 24

x = 3

Therefore, there are 3 adults in the family.

8 0
3 years ago
the mean average distance that jack runs in his last 10 runs is 5.7 miles. work out the distance that he would need to make this
ziro4ka [17]

Answer:

9 miles

Step-by-step explanation:

mean is calculated as

mean = \frac{sum}{count} , then

\frac{sum}{10} = 5.7 ( multiply both sides by 10 )

sum = 57

let x be the distance he needs to cover so mean is 6 , that is

\frac{sum+x}{11} = 6 ( multiply both sides by 11 )

sum + x = 66 , that is

57 + x = 66 ( subtract 57 from both sides )

x = 9

That is he would have to run 9 miles

3 0
2 years ago
Two angles of a triangle measure 15° and 85°. What is the measure for the third angle
disa [49]

Answer:

15+85+x =180

X=180-15-85

X=8O°

Step-by-step explanation:

6 0
3 years ago
Are these triangles congruent ?
11111nata11111 [884]

Answer:

yes

Step-by-step explanation:

from sss axiom

we can say that they are congurqnt

7 0
3 years ago
How to find the perimeter and area
Ad libitum [116K]
For Perimeter you add all the sides of the figure and the total is your perimeter. For Area you multiply the length times the width.
3 0
3 years ago
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