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3 years ago

12. Given the equation y = 2x + 4, what would the value of y be when x = 1?

Mathematics

2 answers:

Paraphin [41]3 years ago

5 0

Answer:

Step-by-step explanation:

Diano4ka-milaya [45]3 years ago

4 0

Answer:

D 6

Step-by-step explanation:

substitute in 1 for x

2(1)= 2

2+4= 6

y=6 when x=1

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Probability. A professor rides his bike to work some days and drives his car on the other days. On any day there is an 80% chanc

Artyom0805 [142]

Answer:

0.09

Step-by-step explanation:

Given :

P(bike) = 0.8

P(car) = 0.2

P(Late given car) = P(Late | car) = 0.05

P(Late given bike) = p(Late | bike) = 0.1

Probability that professor is late :

P(late) = [P(Late | car) * p(car)] + [p(Late | bike) * p(bike)]

P(late) = [0.05 * 0.2] + [0.1 * 0.8]

P(late) = 0.01 + 0.08

P(late) = 0.09

3 0

3 years ago

Using the information given, select the statement that can deduce the line segments to be parallel. If there are none, then sele

Nataly [62]

The second choice is correct. Given that angle 2 and angle 6 are congruent, the largest in each of the corresponding triangles are vertical angles meaning that two known angles are known in each triangle (and they are equal) which means that the last "unknown" (angles 3 and 7) are congruent. The lines DC and AB correspond with these defined, congruent triangles meaning they are parallel.

4 0

3 years ago

Kevin is three years older than Daniel. Two years ago, Kevin was 4 times as old as Daniel.

GarryVolchara [31]

Answer:

I believe that Kevin is 6 years old now.

Step-by-step explanation:

I used the guess and check method to figure this out.

First, I began by making Daniel 1 years old, two years ago. Kevin was 4 times as old as Daniel two years ago, so he would be 4 at the time. Now, Daniel would be 3 and Kevin would be 6 years old. The statement that Kevin is three years older than Daniel would confirm this, because 6-3=3. Hope this helps, this is my first time answering:)

3 0

3 years ago

Find the length of a side of a square if its área is 4/25 cm2

USPshnik [31]

Answer:

2/5cm or 0.4cm

Step-by-step explanation:

Area of square = $Side^{2}$

Thus, Side = $\sqrt{Area}$

= $\sqrt{4/25}$

= 2/5 cm = 0.4cm

4 0

3 years ago

Find x, if the distance end points is (x,1) and (4,4) with the total distance is the square root of 10.

Alex Ar [27]

Okay, take a look at diagram 1 (I know it's rubbish I did it on paint :D), this shows all the information you've given in the question. The two coordinates and the distance between them.

Now if we draw additional lines on this diagram, we can make a right-angled triangle (this is on diagram 2). We can also work out the lengths of the additional sides because we know both coordinates at the end-points of the additional lines.

Finally because this is a right-angled triangle, Pythagoras' theorem must apply to its sides meaning
$( \sqrt{10} )^2 = (x-4)^2 + 3^2$
$10 = (x-4)^2 + 9$
$(x-4)^2 = 1 \Rightarrow x-4 = 1$
therefore x=5.

3 0

3 years ago