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3 years ago

-5 + a/4 equals - 1 equals what?

1 answer:

wel3 years ago

5 0

First, you do -5 plus 5 and whatever you do on one you you must do on the other so you add -1 +5 which gives you 4. Then you multiply by 4 on both sides so you can get a by itself. So 4 times 4 is 16.
A= 16

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-9x2 + 13x – 1=0<br><br> I need 3 answers, pls help me:)

kifflom [539]

The answer to this question is x = 13/9 = 1.444

5 0

3 years ago

The Director of Admissions at Kinzua University in Nova Scotia estimated the distribution of student admissions for the fall sem

VMariaS [17]

Answer:

Variance = 24900

Standard Deviation = 157.7973

Step-by-step explanation:

We are given the following in the question:

Number of admissions: 1000 1200 1500

Admissions Probability: 0.6 0.3 0.1

Formula:

$E(x) = \displaystyle\sum x_iP(x_i)\\E(x) = 1000(0.6) + 1200(0.3) + 1500(0.1)\\E(x) = 1110\\E(x^2) = \displaystyle\sum x_i^2P(x_i)\\E(x^2) = (1000)^2(0.6) + (1200)^2(0.3) + (1500)^2(0.1)\\E(x^2) = 1257000$

Variance =

$\sigma^2 = E(x^2) - (E(x))^2\\\sigma^2 = 1257000 -(1110)^2\\\sigma^2 =24900$

Thus, the variance is 24900.

Standard Deviation =

$\sigma = \sqrt{\sigma^2} = \sqrt{24900} = 157.7973$

Thus, the standard deviation is 157.7973

7 0

3 years ago

PQ has a midpoint of M. the coordinates of M are (-4, 7) and the coordinates of P are (2, 13). What are the coordinates of Q?

Natali5045456 [20]

Using the midpoint formula, the coordinates of Q are: <em>A. (-10, 1)</em>

<h3>What is the Midpoint Formula?</h3>

Midpoint formula is given as, $M(x, y) = (\frac{x_2 + x_1}{2} , \frac{y_2 + y_1}{2})$

Thus, given that:

M is the midpoint of PQ.
M (-4, 7)
P (2, 13).

Therefore:

$M(-4, 7) = (\frac{2 + x_1}{2} , \frac{13 + y_1}{2})$

Solve for x-coordinate of P:

-4 = 1/2(2 + x1)

2(-4) = 2 + x1

-8 = 2 + x1

-8 - 2 = x1

x1 = -10

Solve for y-coordinate of P:

7 = 1/2(13 + y1)

14 = 13 + y1

y1 = 1

Therefore, using the midpoint formula, the coordinates of Q are: <em>A. (-10, 1)</em>

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Learn more about the midpoint formula on:

brainly.com/question/88621

3 0

2 years ago

Is my answer correct? or no <br> --> show details & explanation if I'm wrong!

jeka94

Answer:

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Step-by-step explanation:

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4 0

3 years ago

Read 2 more answers

Activity 2.2.6 which triangles can be proved congruent?

Sindrei [870]

Answer:

Triangles are congruent if: All their sides are equal (SSS), 2 sides and angle between them are equal (SAS), 2 angles and side between are equal (ASA), hypotenuse and angle of right angled triangle are equal (RHS)

S=SIDE

A=ANGLE

H=HYPOTENUSE

R=RIGHT ANGLE

8 0

3 years ago

Read 2 more answers

-5 + a/4 equals - 1 equals what?​

-5 + a/4 equals - 1 equals what?