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3 years ago

Angle A and Angle B are supplementary. If angle A is half the measure of angle B find the measure of each angle

Mathematics

1 answer:

Allushta [10]3 years ago

5 0

Answer:

A=60 and B=120

Step-by-step explanation:

divide them into three parts- two parts+one half

180/3=60 60x2=120 60x1=60

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Brianna received an overall IQ score of 117 on the Wechsler Scale. This means that Brianna has scored approximately____________

Tresset [83]

Using the normal distribution, it is found that the correct option is:

D. 1; 100

In a <em>normal distribution</em> with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

It measures how many standard deviations the measure is from the mean.

In this problem:

The mean on the Wechsler Scale is of 100, hence $\mu = 100$ .

The standard deviation is of 17, hence $\sigma = 17$ .

Brianna had an score of 117, hence $X = 117$

Then:

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{117 - 100}{17}$

$Z = 1$

Hence, the option d is correct.

To learn more about the normal distribution, you can check brainly.com/question/24663213

7 0

3 years ago

Can I get help please

iren [92.7K]

Answer: C

Explanation: We need to combine like terms, which means 7a and -12a and -8 and 4

7-12=5 and -8+4=-4

8 0

3 years ago

a local restaurant offers a deal if you purchase 3 medium pizza, you get 2 sides dishes for free. if you get a total of 8 side d

Paul [167]

12 pizzas because

3 pizzas for ever 2 sides
3/2

x/8

X=12.

7 0

4 years ago

A company's stock begins the week with a price of $43.85 per share. THe price changes by +$2.70 each day for the first two days,

mixas84 [53]

Given:

Initial price of the stock=$43.85

Change for the first two days=+$2.70

Change for next two days=-$1.10

Last day=-$4.45

The objective is to find the price at the last day.

Let's take the price at final day as <em>x</em>.

$\begin{gathered} x=43.85+2.70+2.70-1.10-1.10-4.45 \\ x=42.6 \end{gathered}$

Hence, the price of the stock at the last day is $42.6

5 0

1 year ago

Ritchie got a job at the movie theater. On the first day, he sold 5 adult tickets and 7 children tickets for a total of 104. On

g100num [7]

Answer:

adult: $11
children: $7

Step-by-step explanation:

The sales on the two days can be expressed using equations that can be solved for ticket prices.

<h3>Setup</h3>

Let x and y represent the prices of adult and children's tickets, respectively. Then the sales revenue for the two days can be expressed in the equations ...

5x +7y = 104
7x +3y = 98

<h3>Solution</h3>

One of the easiest solution methods is to use a graphing calculator. The first attachment shows the prices are $11 for an adult ticket; $7 for children tickets.

Using the matrix functions of a calculator, the augmented matrix of the equation coefficients can be reduced to row-echelon form. This, too, shows the solution to be (adult price, children price) = ($11, $7). See the second attachment. (The solution is the right-most column of the reduced matrix.)

Yet another solution method can use the coefficients from the equations written in general form:

5x +7y -104 = 0
7x +3y -98 = 0

In this form, we define three products of "cross multiplication":

Δ1 = (5)(3) -(7)(7) = -34

Δ2 = (7)(-98) -(3)(-104) = -374

Δ3 = (-104)(7) -(-98)(5) = -238

Using those, we find the variable values to be ...

x = Δ2/Δ1 = -374/-34 = 11

y = Δ3/Δ1 = -238/-34 = 7

(adult price, children price) = ($11, $7)

You can read more about the cross-multiplication method here:

brainly.com/question/26397343

6 0

1 year ago

Read 2 more answers