All categories

4 years ago

If y = x² + 2x,find the value of y when x = 5

Mathematics

2 answers:

arlik [135]4 years ago

8 0

Answer:

Step-by-step explanation:

5²=25

2x5=10

25+10=35

Alecsey [184]4 years ago

3 0

_____________________________

Hey!!

Solution,

X=5

Now,

y=x^2+2x

 =(5)^2+2*5

 =25+10 

 = 35

So the value of y is 35

hope it helps

Good luck on your assignment

___________________________

You might be interested in

Jason inherited a piece of land from his great-uncle. Owners in the area claim that there is a 45% chance that the land has oil.

oksian1 [2.3K]

Answer:

0.36 = 36% probability that the land has oil and the test predicts it

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

$P(B|A) = \frac{P(A \cap B)}{P(A)}$

In which

P(B|A) is the probability of event B happening, given that A happened.

$P(A \cap B)$ is the probability of both A and B happening.

P(A) is the probability of A happening.

45% chance that the land has oil.

This means that $P(A) = 0.45$

He buys a kit that claims to have an 80% accuracy rate of indicating oil in the soil.

This means that $P(B|A) = 0.8$

What is the probability that the land has oil and the test predicts it?

This is $P(A \cap B)$ . So

$P(B|A) = \frac{P(A \cap B)}{P(A)}$

$P(B \cap A) = P(B|A)*P(A) = 0.8*0.45 = 0.36$

0.36 = 36% probability that the land has oil and the test predicts it

5 0

3 years ago

Please help me answer this question

Drupady [299]

Answer:

64 ft^3

Step-by-step explanation:

Assuming that all of the values (length [l], width [w] and height [h]) are all 4ft then using the calculation l x w x h, we can see that the answer is 64ft^3.

I hope this helps!

[Hey if this is wrong, don't post a rude reply! Message me and I will try to correct the answer!]

4 0

3 years ago

¿Qué porcentaje de personas encuestadas se comunican menos de 73 minutos?

AlekseyPX

Answer:

20%

50=100%

10=x

x=10×100=1000

1000÷50=20

3 0

3 years ago

Rebekah kicks a soccer ball off the ground and in the air, with an initial velocity of 25 feet per second. Using the formula H(t

Likurg_2 [28]

H(t)=-16t^2+25t

The maximum height occurs at the vertex of the quadratic.

The vertex of a quadratic is always at:

(x,y)=(-b/(2a), (4ac-b^2)/(4a))

So the maximum height is:

(4ac-b^2)/(4a), and in our equation a=-16, b=25, and c=0 so

hmax=(0-25^2)/(-64)

hmax=-625/-64

hmax=9.765625

hmax≈9.8 ft (to nearest tenth of a foot)

3 0

4 years ago

Read 2 more answers

HELP

RUDIKE [14]

Equation:

(2.80 ÷ 7) + .75 (to find the original cost of the cookies)

2.80 ÷ 7 (to find the new cost of the cookies)

Answer:

$1.15 is the original cost of the cookies.

$0.40 is the new cost of the cookies.

5 0

3 years ago

Read 2 more answers

If y = x² + 2x,find the value of y when x = 5​

If y = x² + 2x,find the value of y when x = 5