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KiRa [710]
3 years ago
9

Which system of equations models the word problem on the left?

Mathematics
1 answer:
My name is Ann [436]3 years ago
4 0

Answer: c

2H+3C= 4.95

3H+2C= 5.45

Step-by-step explanation:

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Solve this system of linear equations. -14x + 11y = 23 7x - 3y = 37 <br> x=? y=?
lesya692 [45]
<span> -14x + 11y = 23
+2(7x - 3y = 37)
----------------------
   0 + 5y = 97
y  = 97/5
y = 19.4

7x - 3(19.4) = 37
7x - 58.2 = 37
7x = 37 + 58.2
7x = 95.2
x = 95.2/7
x = 13.6

Check

-14(13.6) + 11(19.4) = 23
-190.4 + 213.4 = 23
</span>
3 0
2 years ago
If the length of a rectangle is 3 and the width is 2, the length of the diagonal is a 13 b 5 c √5 d √13
trasher [3.6K]

Answer:

The length of the rectangle is 12cm and the area of the rectangle is 60cm2.

Explanation:

By definition, the angles of a rectangle are right. Therefore, drawing a diagonal creates two congruent right triangles. The diagonal of the rectangle is the hypotenuse of the right triangle. The sides of the rectangle are the legs of the right triangle. We can use the Pythagorean Theorem to find the unknown side of the right triangle, which is also the unknown length of the rectangle.

Recall that the Pythagorean Theorem states that the sun of the squares of the legs of a right triangle is equal to the square of the hypotenuse. a2+b2=c2

52+b2=132

25+b2=169

25−25+b2=169−25

b2=144

√b2=√144

b=±12

Since the length of the side is a measured distance, the negative root is not a reasonable result. So the length of the rectangle is 12 cm.

The area of a rectangle is given by multiplying the width by the length.

A=(5cm)(12cm)

A=60cm2

3 0
2 years ago
Convert 4/7 to 42nds
Mademuasel [1]

Answer:

24... I hoped dis helped.

7 0
2 years ago
Martin likes to make flower bouquets that have 3 daffodils and 4 tulips per vase. A daffodil has a mass of d grams, a tulip has
Elza [17]

Answer:this is the order of the things to put them

number of bouquets: 5

mass of bouquets: 3d+4t+v

mass of the tulips in one bouquet: 4t

mass of the daffodils in one bouquet: 3d

Step-by-step explanation:

8 0
2 years ago
What's 9 million in standard form
wariber [46]
The answer is 9,000,000
6 0
3 years ago
Read 2 more answers
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