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11111nata11111 [884]
3 years ago
8

9. On Johnny math test, he was asked to re-write the expression –3(x + 10) by using the distributive

Mathematics
1 answer:
kirill [66]3 years ago
5 0

Answer:

No, he is incorrect because he forgot to multiple the negative by the x, and only multiplied 3 by x instead of -3 by x.

Step-by-step explanation:

The correct re-write of this expression is:

-3x - 30

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What is his average speed for end the entire trip 280 miles<br> ?
-BARSIC- [3]

Answer:

20mph

Step-by-step explanation:

because when you divide the 280 it goes by 20 mph to get to 280 miles by quarters but in 20s

7 0
2 years ago
Determine if the solution set for the system of equations shown is the empty set, contains one point or is infinite. 5x+7=2y and
Luda [366]

Answer:

The correct option is option B. It has one solution, and it's x=-3

Step-by-step explanation:

We have the following system of equations:

5x+7 = 2y                        (1)

y-9x=23                            (2)

Step 1: Solve for 'y' in equation (2):

y-9x = 23

y = 9x + 23

Step 2: Substitute in equation (1):

5x + 7 = 2y

5x + 7 = 2(9x + 23)

5x + 7 = 18x + 46

Step 3: Solve for x:

7 - 46 = 18x - 5x

-39 = 13x

x= -3

So the correct option is option B. It has one solution, and it's x=-3

7 0
3 years ago
Read 2 more answers
Abcd is a rectangle with b(-5, 0), c(7, 0) and d(7, 3). find the coordinatesof<br> a.
maxonik [38]
It is (-5,3) it is because cd parallel to ab so y is 3 for a and d and -5 for a and b
5 0
3 years ago
Determine the place value of the digit 2 in the following whole number: 3,204,000
andrey2020 [161]

The hundred thousand place

7 0
3 years ago
Read 2 more answers
HELP ILL GIVE BRAINLISTTT!
lions [1.4K]

Answer:

You can substitute

4

as

x

in the first equation because

x

and

4

are equal.

2

(

4

)

+

y

=

29

8

+

y

=

29

y

=

21

Step-by-step explanation:

8 0
2 years ago
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