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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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Can someone please help me I really need help please help me thank you
Scilla [17]
A shape with 4 angles always have 360 degrees altogether.

Which means:
43 + 167 + 90 + y = 360
y = 360 - 43 - 167 - 90
y = 60
4 0
3 years ago
The lengths of the diagonals of a rhombus are 2x and 10x. What expression gives the perimeter of the rhombus?
True [87]

Answer:

P=4x\sqrt{26}\ units

Step-by-step explanation:

we know that

The sides of a rhombus are all congruent and the diagonals are perpendicular bisectors of each other

so

Applying the Pythagorean Theorem

c^2=a^2+b^2

where

c is the length side of the rhombus      

a and b are the semi-diagonals

we have

a=2x/2=x\ units\\b=10x/2=5x\ units

substitute the values

c^2=x^2+(5x)^2

c^2=26x^2

c=x\sqrt{26}\ units

To find out the perimeter of the rhombus multiply the length side by 4

P=(4)(x\sqrt{26})

P=4x\sqrt{26}\ units

6 0
3 years ago
Together Kris and Julio scored 40 points in the game. Julio scored 3 times as many points as Kris this time. How many points did
Fiesta28 [93]
Julio scored 30 points and Kris scored 10 points which would give us the total score
3 0
3 years ago
A human factors expert recommends that there be at least 9 square feet of floor space in a college classroom for every student i
Aliun [14]
I think the answer is 783 square feet.
6 0
3 years ago
What is the solution to 2/3 x + 5 =1​
geniusboy [140]

Answer:

x = -6

Step-by-step explanation:

The solution means to solve for x. To solve for "x", isolate the variable. This means to separate it from everything else. Do this using reverse operations in reverse BEDMAS order.

2/3 x + 5 = 1​

2/3 x + 5 - 5 = 1​ - 5    Subtract 5 from both sides

2/3 x = -4

(2/3 x) / (2/3) = (-4) / (2/3)     Divide both sides by 2/3

x = (-4) / (2/3)

x = -6    Solution

5 0
3 years ago
Read 2 more answers
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