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Gnom [1K]
3 years ago
13

Write an equivalent expression for 8y + 12 + 2y + 8

Mathematics
2 answers:
makkiz [27]3 years ago
8 0
10y + 20 is an equivalent expression
kati45 [8]3 years ago
7 0
8y+12+2y+8
combine like terms.
10y+20
Cheers, Irys :3
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I need to work out x
frutty [35]

Answer:

9,765 cm

Step-by-step explanation:

We'll solve out the measurements for triangle ABC then it will be easy to figure out x

For triangle ABC, we have

Angle B = 90 degrees.

Angle A (CAB) = 38 degrees (the angle CAD is 19 and is said to be half of CAB, since the line AD is a bisector).

Angle C = 180 - 90 - 38 = 52 degrees.

To find the measurement of the BC line, which we label a, we know that

\frac{a}{sin(A)} = \frac{c}{sin(c)}

So, we can isolate the a to get:

a = \frac{c * sin(A)}{sin(c)} = \frac{25 * sin(38)}{sin(52)} = 19.53

Now we know the segment BC is 19.53 cm.

And we know that segments CD and DB are equal, since AD is a bisector, cutting the CAB angle in half.

So, CD is half of BC.... so 19.53 / 2 = 9.765 cm

7 0
3 years ago
» Alexander has some watermelons. He gathers 13 more watermelons. He now has 62 watermelons.
Vilka [71]
Yeah but what is the question?
3 0
3 years ago
Maya starts with $300 in her bank account. Each month she spends $40. What is the slope in this equation , and what is the y- in
Neporo4naja [7]

Answer: y=<em>300</em>-40x

The <em>y-intercept</em> would be 300

The slope would be -40

Step-by-step explanation:

x=number of months

300 is the amount she starts with

Equation can also be written like so;  y=-40x+300 just like in y=mx+b (slope intercept) form

6 0
3 years ago
2 planes leave the airport at the same time. their speeds are 140 mph and 170 mph and the angle between their courses is 25 degr
Damm [24]

Answer:

183.27miles

Step-by-step explanation:

Note that we are considering two planes.

Plane 1

Speed = 140 mph

Time = 2.5 hours

Distance = ?

Speed = distance/time

140 mph = distance/2.5hrs

Distance = 140×2.5

= 350miles

Plane 2

Speed = 170 mph

Time = 2.5 hours

Distance = ?

Speed = distance/time

170 mph = distance/2.5hrs

Distance = 170×2.5

= 425miles

The angle between side is 25 degree

From cosine rule

c^2 = a^2 + b^2 − 2abcos(tetha)

Where a = 350

b = 425miles

c^2 = 350^2+425^2-2(350×425)(cos25)

c^2 = 122500+180625-297500(0.906)

c^2 = 303125-269535

c^2 = 33590

C = √33590

C = 183.27miles

The distance they flew apart after 2.5hrs is 183.27miles

5 0
2 years ago
Forty gallons of a 60% acid solution is obtained by mixing a 75% solution with a 50% solution. How many gallons of each solution
Novay_Z [31]
Sry but I don’t know the answer I just have two answer 2 questions so I don’t have to watch a video
7 0
3 years ago
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