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MariettaO [177]
3 years ago
10

5x+30=7x+20 Bbbbnnvvvcvhbx

Mathematics
2 answers:
Ierofanga [76]3 years ago
7 0
“ x “ equals 5 because 5(5)+30 = 55 and 7(5)+ 20 = 55 so it’s x=5
ollegr [7]3 years ago
3 0
X=5 is the answer for this problem
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I need help on 1 & 2
Anon25 [30]

Answer:

1 - Avenue A is perpendicular to South St.

2 - 70°

Step-by-step explanation:

1 - North, Center, and South St. are parallel lines. Therefore Ave A will be perpendicular to the three lines.

2 - Ave B and Center street forms a 70° angle. Since Center and South St. are parallel lines, they have corresponding angles. Therefore, Ave B and South St also form a 70° angle. The same is true for Ave B and North St.

3 0
3 years ago
Solve for z in the literal equation – (z +11)=y.​
Sergeu [11.5K]

Answer:

z=-y-11

Step-by-step explanation:

let's take out the parenthesis

-z-11=y

Now put 11 on the other side

-z=y+11

Then make z positive

z=-y-11

4 0
3 years ago
Read 2 more answers
Explain why this quadrilateral is not a parallelogram.
ladessa [460]

Answer:

because this figure does not have two parallel sides

I'm Sorry for by bad English but I am italian

8 0
3 years ago
A motorboat travels 448 kilometers in 8 hours going upstream and 440 kilometers in 5 hours going downstream. What is the rate of
liubo4ka [24]

9514 1404 393

Answer:

  • boat: 72 km/h
  • current: 16 km/h

Step-by-step explanation:

The speed difference between boat and current is the upstream rate:

  (448 km)/(8 h) = 56 km/h

The sum of speeds of boat and current is the downstream rate:

  (440 km)/(5 h) = 88 km/h

The rate of the boat is half the sum of these:

  (56 +88)/2 = 72 . . . km/h

The rate of the current is half their difference:

  (88 -56)/2 = 16 . . . km/h

The rate of the boat is 72 km/h; the rate of the current is 16 km/h.

4 0
3 years ago
A slope of -4 through the point (5,-1) anyone know this?
Diano4ka-milaya [45]

Answer:

y = -4x + 19

Step-by-step explanation:

We will use the linear equation y = mx + c for this

m is our slope and c is our offset (y-intercept)

We are informed that our slope is -4 so

y = -4x + c

To find the equation of a line passing through the point (5,-1) we simply plug in our values into our equation

-1 = -4(5) + c

Then we can find c

-1 = -20 + c

19 = c

Now that we have our m and c, we can form an equation of a line that passes through our point:

y = -4x + 19

8 0
3 years ago
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