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Simora [160]
3 years ago
10

Simplify this expression: 3(x + 4.5) + 2(2.6x – 3)

Mathematics
1 answer:
lukranit [14]3 years ago
7 0

Answer: 8.2x+7.5

Step-by-step explanation:

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The distance between city A and city B is 22 miles. The distance between city B and city C is 54 miles. The distance between cit
Cloud [144]
54 is the hypotenuse because it is the longest side. Square all of the sides. So 54^2=2916
51^2=2601
22^2=484
Now you have 2916=2601+484
Add the two and they will be greater than 2916. Because of that, you will have an acute triangle because 22^2+51^2>54^2
In short, its B
7 0
3 years ago
Read 2 more answers
The ratio of boys to girls in a group is 7:1. If there are 66 more boys than girls, work out how many girls there are
nevsk [136]

Answer:11

Step-by-step explanation:

Boys : girls=7:1

Sum of ratio=7+1=8

Let them number of girls be y

Then they number of boys=y+66

Total number of pupils=y+y+66

Total number of pupils=2y+66

Number of girls=(girls ratio)/(sum of ratio) x (total number of pupils)

y=1/8 x (2y+66)

Cross multiply

y x 8=2y + 66

8y=2y + 66

Collect like terms

8y-2y=66

6y=66

Divide both sides by 6

6y/6=66/6

y=11

The number of girls is 11

4 0
2 years ago
Solve for y<br> 8x + y = 32
oksian1 [2.3K]

Answer:

Subtract 8x8x from both sides of the equation.

y=32−8x

8 0
3 years ago
Find the midpoint of the line segment with end coordinates of: ( 2 , 1 ) and ( 4 , 5 )
Valentin [98]

Step-by-step explanation:

x1=2. y1=1. x2=4. y2=5

by midpoint formula,

2+ 4/2 = 6/2 =3

1+5 /2 =6/2 = 3

therefore,the midpoints are (3,3)

<h2>Hope this helps :></h2><h2></h2><h2>From Cambridge</h2><h2></h2><h2>Please give brainliest</h2>
4 0
3 years ago
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4(5x - 2) = 72<br> What do I do
Pepsi [2]

Answer:

x = 4

Step-by-step explanation:

4(5x - 2) = 72

Do the distributive property

20x - 8 = 72

Then add 8 to both sides to get 20x alone

20x - 8 = 72

      + 8  + 8

20x = 80

Then divide both sides by 20 to get x

\frac{20x}{20} = \frac{80}{20}

x = 4

6 0
3 years ago
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