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12345 [234]
3 years ago
13

What is the value of the expression 7x (5-3) + (100 ÷ 5)

Mathematics
1 answer:
Zanzabum3 years ago
4 0

Answer:

Step-by-step explanation:

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Olivia takes twelve laps on a long track in fifteen minutes. how much time will it take her to skate thirty laps ?
Firdavs [7]

Answer:

C. 37.5 minutes


Step-by-step explanation:

You can set up a proportion to help you figure this out.

12/15=30/x (in this proportion, the number of laps are both on the numerator and the time it takes her is on the denomiator.)

Now, just cross multiply and your equations should be: 12·x=15·30, which equals to 12x=450.

Divide 12 on both sides and x=37.5


3 0
2 years ago
Read 2 more answers
7 + 9y < -3 (y - 5) + 4
Anuta_ua [19.1K]

Answer:

y<1

Step-by-step explanation:

12y/12

12/12

5 0
3 years ago
Use the figure to the right to find the value of PT. T is the midpoint of PQ.
o-na [289]

Answer:

PT = 17

Step-by-step explanation:

Since T is the midpoint of PQ, then

PT = TQ , substitute values

4x + 5 = 8x - 7 ( subtract 4x from both sides )

5 = 4x - 7 ( add 7 to both sides )

12 = 4x ( divide both sides by 4 )

3 = x

Thus

PT = 4x + 5 = 4(3) + 5 = 12 + 5 = 17

4 0
2 years ago
Read 2 more answers
Prove that congruent triangles have congruent corresponding altitudes. I NEED ANSWER ASAP PLZZZZZZZZZZZZZZZZZZZZZ
Nutka1998 [239]

Corresponding altitudes are corresponding parts. They are congruent because ... Corresponding parts of congruent triangles are congruent. (CPCTC)

8 0
3 years ago
Please help! picture attached :)
Radda [10]

Answer:

y=-3x+4

Step-by-step explanation:

im assuming that you need the equation of the table

to find slope, y2-y1/x2-x1    10-4/-2-0

6/-2=-3   slope=-3  

y=mx+b   just sub in the numbers from a point in the table

10=-3(-2)+b

10=6+b

b=4

y=-3x+b

4 0
2 years ago
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