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oksian1 [2.3K]
4 years ago
15

What is the value of x?

Mathematics
1 answer:
tekilochka [14]4 years ago
4 0

Answer:

Step-by-step explanation:

since we can see that the lines are parallel

and we can see that the both are interior angles and when we sum up both angles we get 180

2x - 5  + 45 = 180

2x  + 40 =180

2x = 180 - 40

2x =140

x = 140/2

x = 70

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A grocer stacks oranges in a four-sided pyramid that is 7 layers high, how many oranges are in a pile? The explicit formula for
Svetradugi [14.3K]

Answer:

140 oranges

Step-by-step explanation:

From the Question, we know that the pyramid has 7 layers

The number of oranges in the first layer is = 1

Hence, the number of oranges in a pile is calculated as:

1² + 2² + 3² + 4² + 5² + 6² + 7²

= 1 + 4 + 9 + 16 + 25 + 36 + 49

= 140 oranges

6 0
3 years ago
Are there any rational numbers between 0.4 repeat and 4/9? explain
Alisiya [41]
No.
.4444444 (repeats forever)
and 4/9 are the same number
8 0
4 years ago
Read 2 more answers
Valerie has 10 cds in her music case seven of the cds are pop musoc cds what is this amount written in as a decimal
hjlf
The answer to this is .70
6 0
3 years ago
Read 2 more answers
for a trip, one high school rented and filled 2 vans and 8 buses with 176 students.another high school instead fit its 164 stude
vodka [1.7K]

Answer:

A bus carries 20 students while the van carries 8 students

Step-by-step explanation:

Let's assume that the number of students that the bus can carry is X And

The number of students that the van can very be y

From first statement,

8x + 2y = 176______ first equation

From Second statement,

7x + 3y = 164______ second equation

The above is a simultaneous equation and we will use the elimination method to solve for both x and y

But if we take a look at both equations,we will find out that we can't make use of the elimination method since the coefficients of both x and y aren't same in both equations.

What we have to do now is to multiply equation 1 by 3 and multiply equation 2 by 2 so as to get the coefficients of y in both equation to be the same.

Initially, both equation are

8x + 2y = 176____ first equation

7x + 3y = 164____ second equation

They will now be :

24x + 6y = 528(was multiplied by 3)

14x + 6y = 328(was multiplied by 2)

Now subtract equation 2 from 1 and we have

10x = 200

X = 20

Now substitute x = 20 in equation 1 above

8x + 2y = 176

(8 × 20) + 2y = 176

2y = 176 - 160

Y = 8

Remember that we assumed that the number of students that each bus carried was x and van was y,now we know the values of c and y to be 20 and 8 respectively.

Therefore, each bus carried 20 students and each van had 8 students on it

8 0
4 years ago
Read 2 more answers
10x - 14 - 12 x + 3 = -25
katrin [286]

Answer:

7

Step-by-step explanation:

10x-14-12x+3=-25

-2x-14+3=-25

-2x-11=-25

take -2x to the other side

take 25 to the other side

14=2 divide

=7

8 0
3 years ago
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