You only have to answer the last question, number 12 and I will mark brainliest.

Answer:

x = 49/33

Hope this helps you! Even though there's no explanation... (I'm really bad at explaining, I'm just good at doing...)

Answer:

6

Step-by-step explanation:

Answer:

m∠5=34°

Step-by-step explanation:

angle 1 is a corresponding angle to angle 5 therefore they are congruent

Answer:

0.82% probability that the average time it takes to complete both homework assignments is greater than 82 minutes

Step-by-step explanation:

When the distribution is normal, we use the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Math homework:

[tex]\mu_M = 30, \sigma_M = 3[/tex]

Arts homework:

[tex]\mu_A = 40, \sigma_A = 4[/tex]

What is the probability that the average time it takes to complete both homework assignments is greater than 82 minutes?

Here, we have a sum of normal variables. The mean will be the sum of the means, while the standard deviation is the square root of the sum of the variances. So

[tex]\mu = \mu_M + \mu_A = 30 + 40 = 70[/tex]

[tex]\sigma = \sqrt{\sigma_M^2 + \sigma_A^2} = \sqrt{3^2+4^2} = 5[/tex]

This probability is 1 subtracted by the pvalue of Z when X = 82. So

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{82 - 70}{5}[/tex]

[tex]Z = 2.4[/tex]

[tex]Z = 2.4[/tex] has a pvalue of 0.9918

1 - 0.9918 = 0.0082

0.82% probability that the average time it takes to complete both homework assignments is greater than 82 minutes

the answer is 162

(to add more letters)

Answer:

D.63 leaves

Step-by-step explanation:

Divide the given number of leaves by the time it took that many to fall

190/3=63.33 which rounds down to 63

Question #2

21 Miles per gallon

Divide the number of gallons by the amount of gas to get miles per gallon.

252/12=21 miles per gallon

Answer:

5

Step-by-step explanation:

7.5/3= 2.5

2.5 x 2 = 5

Answer:

4√3 or Decimal form 6.928203

Step-by-step explanation:

ofc i know the answer, ima different breed

Step-by-step explanation:

5/6b=17/8

Cross multiple

40=102b

divide through by 102

b=20/51

Answer:

Step-by-step explanation:

exponential decay

rate of change: 20%

Answer:

w<50

c≤30

6w+2c≥320

Step-by-step explanation:

W stands for the car wash, and C stands for the cakes. Naturally, it would be 7w+4c≥320 but each cake costs $2 to make and each car wash costs $1 per car. This makes the system 6w+2c≥320. They will wash less than(<) 50 cars and bake no more than(≤) 30 cakes. I hope this helped :).

To solve the problem we must know about Expressions.

In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context.

Given to us

Earning per car wash = $7

Earning per cake  = $4

Cost of supplies per car wash = $1

Cost of cake = $2

They will wash less than 50 cars and

Bake no more than 30 cakes

They want to raise at least $320

Assumption

Let the number of cakes they sold be represented by x, and the number of car washes they did be represented by y.

Profit from Car wash

= Earning per car wash - Cost of supplies per car wash

= $7 - $1

= $6

Profit from Cake

= Earning per Cake - Cost of a cake

= $4 - $2

= $2

The system that represents profit

$320 = ($6)y + ($2)x

320 = 6y + 2x

As it is given that they will not make more than 30 cakes, therefore,

x ≤ 30

As it is given that they will wash less than 50 cars.

y < 50

Hence, the following equations can represent the system,

Learn more about Expression:

https://brainly.com/question/13947055

Answer:

Answer 3

Step-by-step explanation:

Answer:

Perimeter = 26 cm. Area =

Step-by-step explanation:

The rectangle has a width of 4 cm and the square has a length of 9. cm, so  to make them have the same area you make the length of the rectangle 9 cm and the square have a width of 4 cm.

then each shape will have two sides that are 9 cm and two sides that are                 4 cm.

Perimeter

9 + 9 = 18

4 + 4 = 8

18 + 8 = 26

the perimeter is 26 cm.

Area

9 x 4 = 36

the area is 36 cm.

Answer:

Width is 4cm and length is 20.25, so perimeter is 48.5

Step-by-step explanation:

Square has same length for each side

Area for the Square 9 x 9 = 81

So find another number that adds up to the area of the square

Area for Rectangle 4 x 20.25 = 81

Width for Rectangle is 4cm and length is 20.25, so perimeter is 48.5

Should be pretty easy if you have a calculator, It'll just take a couple more minutes :D

Answer:

4:36

24 x 4:36

96:36

8:4

1day = 24 hours

Step-by-step explanation:

Answer:

2 2/9

Step-by-step explanation:

Answer:

56

Step-by-step explanation:

If we split this figure to 2 parts, we figure the area based upon this composite figure.

1 figure is 10x4(rectangle)

the other figure is a 4x4 square (Note we subtract 8 by 4 because we don't want overlapping area)

After that we find the area of those to figures then we add them up

(4x4)+(10x4)

16+40

56

Answer:

300 chapter books

Step-by-step explanation:

500/(3+2)=100

100x3=300

Answer: I have a feeling that the answer is 10,000.

Answer:

"bisect" means: angle FGH = angle HGI

(3x-3)=(4x-14)

-3+14=4x-3x

x=11

Angle FGH = (3x-3) = 30

Angle HGI = Angle FGH = 30

Angle FGI = 60

Step-by-step explanation:

i think this is right im not sure

Answer: 9

Step-by-step explanation:

Answer:

0.254

Step-by-step explanation:

Given that:

Percentage of those having health insurance = 71%

p = 71 / 100 = 0.71

Number of adults selected at random, n = 4

Probability that 4 selected have health insurance :

p^n = 0.71^4 = 0.25411681

= 0.254

Answer:

x=18.5 y=14.2

Step-by-step explanation:

The unmarked angle for the top/x triangle is 109 (all angles add up to 180, 180-50-21=109)

Use cosine rule:

(a/sina)=(b/sinb)

(x/sin109)=(15/sin50)

(x/sin109)=19.58110934

x=18.51430261

The top-most angle of the bottom/y triangle is 71 (angles on a straight line are 180, 180-109=71)

The righthand angle of the bottom/y triangle is 19 (angles in a triangle add to 180, 180-71-90=19)

Use cosine rule again:

(a/sina)=(b/sinb)

(y/sin71)=(15/sin90)

y/sin71=15

y=14.18277863

Answer:

A probability of 0.254 should replace the "?" in the table

Step-by-step explanation:

We have the probabilities for the time of the day when each person begins a trip, during a 24-hour period.

The sum of these probabilities has to be 100% = 1.

The probabilities are of: 0.004, 0.033, 0.144, 0.234, 0.208, ?, 0.123

Since their sum has to be 1, we can find ?. So

0.004 + 0.033 + 0.144 + 0.234 + 0.208 + ? + 0.123 = 1

0.746 + ? = 1

? = 1 - 0.746

? = 0.254

A probability of 0.254 should replace the "?" in the table

Answer:

her car can travel for (24 * 4) miles

which is

96 miles

Answer:

96 miles

Step-by-step explanation:

As it's 24 miles each gallon so , therefore 4 x 24 = 94

Answer:

Step-by-step explanation:

132 is what percent of 880? = 15.