Need help asap with this Algebra question!!

Answer:

D

Step-by-step explanation:

These I's are being used as sticks

lets say i have 40 sticks then i add 55 more sticks to them

IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII + IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII If i were to reverse the sequence and use the 55 sticks and add 44 sticks to them it would be the same as me having 44 sticks and adding 55 more.

5 0

3 years ago

I don’t get what it means by “Identify the graphs of proportional relationships.”

Ymorist [56]

C and B is proportional relationships , because the proportional relationships always start at zero and the line must be straight !

5 0

4 years ago

Dianne's profit from selling magazine subscriptions varies directly with the number of subscriptions sold. Dianne made $30 from

mixas84 [53]

B) I say this bcz I divided 30 by 24 and got 1.25
Profit=1.25(subscription)
(If someone else proves this wrong then I am sorry but I am in Middle School and my teacher just taught me this and I got an 100 so if it doesn't help I'm sorry) (I even used all those math calculator and word problem websites)

4 0

3 years ago

The heat index I is a measure of how hot it feels when the relative humidity is H (as a percentage) and the actual air temperatu

PSYCHO15rus [73]

Answer:

a) $I(95,50) = 73.19$ degrees

b) $I_{T}(95,50) = -7.73$

Step-by-step explanation:

An approximate formula for the heat index that is valid for (T ,H) near (90, 40) is:

$I(T,H) = 45.33 + 0.6845T + 5.758H - 0.00365T^{2} - 0.1565TH + 0.001HT^{2}$

a) Calculate I at (T ,H) = (95, 50).

$I(95,50) = 45.33 + 0.6845*(95) + 5.758*(50) - 0.00365*(95)^{2} - 0.1565*95*50 + 0.001*50*95^{2} = 73.19$ degrees

(b) Which partial derivative tells us the increase in I per degree increase in T when (T ,H) = (95, 50)? Calculate this partial derivative.

This is the partial derivative of I in function of T, that is $I_{T}(T,H)$ . So

$I(T,H) = 45.33 + 0.6845T + 5.758H - 0.00365T^{2} - 0.1565TH + 0.001HT^{2}$

$I_{T}(T,H) = 0.6845 - 2*0.00365T - 0.1565H + 2*0.001H$

$I_{T}(95,50) = 0.6845 - 2*0.00365*(95) - 0.1565*(50) + 2*0.001(50) = -7.73$

8 0

3 years ago

What is the reason for Statement 5 of the two-column proof?

zmey [24]

Given: ∠JNL and ∠MNK are vertical angles and m∠MNK=90°

Prove: ∠JNL is a right angle.

Statements Reasons

1. ∠JNL and ∠MNK are vertical angles. Given

2. $\angle JNL \cong \angle MNK$ Vertical angle theorem

3. $m \angle JNL = m \angle MNK$ Angle congruence postulate

4. $m \angle MNK = 90^\circ$ Given

5. $m \angle JNL = 90^\circ$ <u> Substitution Property of Equality</u>

Since, the measures of angle JNL and MNK are equal and the measure of angle MNK is 90 degrees. therefore, by substitution property of equality, both the angles JNL and MNK will have an equal measure.

Therefore, $m \angle JNL = 90^\circ$

6. ∠JNL is a right angle. Definition of right angle

8 0

3 years ago

Read 2 more answers