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meriva
3 years ago
10

If x = 7, what is the value of the expression above?

Mathematics
1 answer:
givi [52]3 years ago
8 0

if x= 7 what is the value of x-4

7 - 4

=3

if y=3 what is the value of 8y

8 x 3

= 24

if x=7 what is the value of 3x-4

(3 x 7) - 4

= 17

if x=7 and y=3 what is the value of 2x-7y

(2 x 7) -(7 x 3)

= - 7

if x=7 and y=3 what is the value of 4y-X

(4 x 7) - 3

= 25

Hope this helps

You might be interested in
A student has $1 bills and $5 bills in his wallet. He had a total of 15 bills that are worth $47. How many of each type does he
Mrrafil [7]

Total number of $1 bills=7

Total number of $5 bills=8

Further explanation:

Given

Let x be the number of $1 bills

and

y be the number of $5 bills

Then according to the given statements

x+y=15

x+5y=47

From first equation:

x+y=15\\x=15-y

Putting x=15-y in second equation

x+5y=47\\15-y+5y=47\\4y=47-15\\4y=32\\\frac{4y}{4}=\frac{32}{4}\\y=8

Putting y=8 in first equation

x+8=15\\x=15-8\\x=7

Hence,

Total number of $1 bills=7

Total number of $5 bills=8

Keywords: Linear equations, Substitution method

Learn more about linear equations at:

  • brainly.com/question/2367554
  • brainly.com/question/2977815

#LearnwithBrainly

4 0
3 years ago
Hi could someone work this out for me? thanks in advance​
swat32
The answer is 66.

Explanation
4×3 = 12,
6×9 = 54.
54+12 = 66

To do this the first box on the left corner it says three and four so you multiply them. Then there’s a second box with six and nine. You have to multiply 6 and 9 together. After you get those answers you add that answer with the answer from three times four.
Hope I helped you!
:)
7 0
3 years ago
Please help me with this!!
slega [8]

Answer:

The Answer is (1,10)

Step-by-step explanation:

First, I saw the operation done on point (5,8), to translate it to point (3,9), then I did this operation again to get the answer.

[The operation I'm talking about is (x-2,y+1)]

5 0
2 years ago
What is the value of A to the nearest tenth? (geometry)
netineya [11]
It's about 12.9 . When two chords intersect, the products of the segments are equal. So (15 x 30) = 35a .
5 0
3 years ago
Read 2 more answers
Please help me I’ll give brainliest
beks73 [17]

Answer:

rational

Step-by-step explanation:

since rational numbers include both negative,positive , positive decimals negative and positive decimals, fractions..

5 0
2 years ago
Read 2 more answers
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