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1 year ago

Anna works as a painter. She charges S130 for paint supplies and $25 for each hour, h, she

Mathematics

2 answers:

Misha Larkins [42]1 year ago

8 0

Answer:

$25(h) + $130

Step-by-step explanation:

sergiy2304 [10]1 year ago

5 0

Answer:

$\sf 130 + 25h = TA$

$Solving Steps : -$

Question :-Anna works as a painter. She charges S130 for paint supplies and $25 for each hour, h, she works. Which expression represents the total amount of money Anna charges?

Given :- To find the expression represents the total amount of money Anna charges?

<h3>Solution</h3>

She earns $ \sf 130 \:for\: paint\: supplies\: and\: $25 per hour

Therefore, will add $130 to $25 and add a variable letter 'h'

⇒ $130 + $25(h)

⇒ $130 + $25h = TA

TA being Total amount

Expression = $130 + 25h = TA$

~Done~

Have a wonderful and fruitfull day :-)

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In fall 2014, 36% of applicants with a Math SAT of 700 or more were admitted by a certain university, while 18% with a Math SAT

Snezhnost [94]

Answer:

The percentage of admitted applicants who had a Math SAT of 700 or more is 48.48%.

Step-by-step explanation:

The Bayes' theorem is used to determine the conditional probability of an event E $_{i}$ , belonging to the sample space S = (E₁, E₂, E₃,...Eₙ) given that another event A has already occurred by the formula:

$P(E_{i}|A)=\frac{P(A|E_{i})P(E_{i})}{\sum\limits^{n}_{i=1}{P(A|E_{i})P(E_{i})}}$

Denote the events as follows:

X = an student with a Math SAT of 700 or more applied for the college

Y = an applicant with a Math SAT of 700 or more was admitted

Z = an applicant with a Math SAT of less than 700 was admitted

The information provided is:

$P(Y)=0.36\\P(Z)=0.18\\P(X|Y)=0.32$

Compute the value of $P(X|Z)$ as follows:

$P(X|Z)=1-P(X|Y)\\=1-0.32\\=0.68$

Compute the value of P (Y|X) as follows:

$P(Y|X)=\frac{P(X|Y)P(Y)}{P(X|Y)P(Y)+P(X|Z)P(Z)}$

$=\frac{(0.32\times 0.36)}{(0.32\times 0.36)+(0.68\times 0.18)}$

$=0.4848$

Thus, the percentage of admitted applicants who had a Math SAT of 700 or more is 48.48%.

5 0

2 years ago

What number could t represent to make the inequality true? 2t+4<-8

Anna71 [15]

2t + 4 < -8

2t < -12

t < -6

For the inequality to be true, t must be a number that is less than -6.

Hope this helps!

6 0

1 year ago

On Martin's first stroke, his golf ball traveled 4/5 of the distance to the hole. On his second stroke, the ball traveled 79 met

Sav [38]

Answer:

0.395 kilometre

Step-by-step explanation:

Given:

On Martin's first stroke, his golf ball traveled 4/5 of the distance to the hole.

On his second stroke, the ball traveled 79 meters and went into the hole.

Question asked:

How many kilometres from the hole was Martin when he started?

Solution:

Let distance from Martin starting point to the hole in meters = $x$

On Martin's first stroke, ball traveled = $\frac{4}{5} \ of \ total \ distance\ to\ the\ hole$

$=\frac{4}{5} \times x=\frac{4x}{5}$

On his second stroke, the ball traveled and went to the hole = 79 meters

Total distance from starting point to the hole = Ball traveled from first stroke + Ball traveled from second stroke

$x=\frac{4x}{5} +79\\ \\ Subtracting\ both\ sides\ by \ \frac{4x}{5}\\ \\ x- \frac{4x}{5}= \frac{4x}{5}- \frac{4x}{5}+79\\ \\ \frac{5x-4x}{5} =79\\ \\ By \ cross\ multiplication\\ \\ x=79\times5\\ \\ x=395\ meters$

Now, convert it into kilometre:

1000 meter = 1 km

1 meter = $\frac{1}{1000}$

395 meters = $\frac{1}{1000}\times395=0.395\ kilometre$

Thus, there are 0.395 kilometre distance from Martin starting point to the hole.

8 0

2 years ago

This also please and thank you for those who do decide to help me

alex41 [277]

240 for # 2 because 6 times 4 times 10 is equal to 240

I am still working on others

4 0

2 years ago

Find the volume of the solid below.

Semenov [28]

Answer:

Volume = V= 346.43 cm ^3

Step-by-step explanation:

15.32 x 10 = 153.2cm Area of side

We find the height of the cylinder, to enable the radius/2 for the circle side x 2

it would be the same as triangle side 6 but the exact circumference is worked out at 6.37

We start by finding the side

As a = half circumference = 20 x sin (30) =10 we x2 for full circumference, then divide by pi

10 +10 =20cm circumference.

20/6.28 =3.1847133758 = radius

we x 2 and find the height

3.1847133758 x 2 = 6.3694267516

rounded to nearest 10th = 6.4 units exact 6.37

We find other measurements before calculating volume.

and b = √400-√100 = √300

b= 17.32 (height for volume use) or length of right side cylinder

c= 20 hypotenuse.

Volume = πr2h

V= 3.14 * 6.37 * 17.32 =346.43

V= 346.43 cm ^3

V= 346 cm ^3 to nearest 10th

V= 346.43 cm^3

5 0

2 years ago