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inessss [21]
3 years ago
15

Which of the expressions are equivalent to the one below? Check all that

Mathematics
1 answer:
garik1379 [7]3 years ago
4 0
Hi hi!!

So, A is correct because it is the same equation just (3+4) is in the front. D is also correct because it is the same question because when a number is for example like 10(3+4) it mean multiplication and in this case you are multiplying. B and C are incorrect because they do not have a total of 70. The original equation, 10x(3+4) = 10x7 = 70.

Correct answers:

A. (3+4)x10
D. 10(4+3)
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Can you answer #1 and #3 please (find the slope) ASAP
daser333 [38]

To calculate the slope of a line, you only need two points from that line, (x1, y1) and (x2, y2).

The equation used to calculate the slope from two points is:

(y2 - y1) / (x2 - x1)

#1:

First point : (5 ,7) = (x1, y1)

Second point : (2, -2) = (x2, y2)

Equation : (-2 - 7) / (2 - 5)

Solve the equation:

(-2 - 7) = -9

(2 - 5) = -3

-9/-3 = 3 (a negative number divided by a negative number gives you a positive number)

The slope of the line in #1 is : 3


#3:

First point : (5, 9) = (x1, y1)

Second point : (5, -2) = (x2, y2)

Equation : (-2 - 9) / (5 - 5)

Solve the equation:

In this case, you don't need to solve anything, because anything divided by zero will give you 0 (5 minus 5 = 0).

The slope of the line in #3 is : 0


8 0
3 years ago
Read 2 more answers
Max spends three times as long on his math homework than he does on his science homework. If he spent total of 64 minutes on mat
den301095 [7]

Let X = science homework.

Then math homework would be 3x ( three times as long).

Now you have math plus science = 64 minutes:

x  + 3x = 64

Combine like terms:

4x = 64

Divide both sides by 4:

x = 64 / 4

x = 16

He spent 16 minutes on science and 48 minutes on math.

6 0
3 years ago
Solve the system of equations using substitution:<br> 6x – y = –15<br> X + 2y = 17
defon

Answer:

x = -1

y = 9

Step-by-step explanation:

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3 0
3 years ago
Help me :) !
m_a_m_a [10]

Answer:

69

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
If you have work plz show it but I need help with this anyone?
inysia [295]

1) -31

2)-15

3)-13

4)-7

5) 32

6)-7

7)-23

8) 2

9) 9

10) 10


5 0
3 years ago
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